Dr Pat Scott

ARC Future Fellowship

Physics
Faculty of Science
pat.scott@uq.edu.au
+61 7 336 53129

Overview

I'm a particle and astroparticle phenomenologist, which basically means a universal busybody. I stick my nose into particle theory and experiment, cosmology, solar and stellar physics, high energy astrophysics, statistics, computational physics, supercomputing and other things - usually two or three at a time.

Have a look at some of my papers for details of the fun I get up to. I am part of the GAMBIT Community, a bunch of 70-odd other like-minded busybodies from all over the HEP-astro diaspora, trying to put together all the pieces of the jigsaw puzzle that is the search for physics Beyond the Standard Model (of particle physics). A big part of that is dark matter, but really, we'll take any new particles we can get. I was Head of GAMBIT from its founding in 2012 to the end of 2020.

I've been at UQ since 2019. Before that I was an STFC Ernest Rutherford Fellow and Senior Lecturer in the Fundamental Physics Section at Imperial College, a Banting Fellow in the HEP Theory group at McGill University, a PhD student in the Cosmology, Astroparticle Physics and String Theory Group at the Oskar Klein Centre in Stockholm, and an Honours student at the Mt Stromlo Observatory at ANU in Canberra.

Research Interests

  • Physics Beyond the Standard Model
  • Particle physics theory and experiment
  • Cosmology, solar and stellar physics
  • High energy astrophysics
  • Statistics
  • Computational physics
  • Numerical analysis
  • Supercomputing
  • Machine learning

Qualifications

  • Doctor of Philosophy, Stockholms universitet

Publications

  • Stöcker, Patrick, Balázs, Csaba, Bloor, Sanjay, Bringmann, Torsten, Gonzalo, Tomás E., Handley, Will, Hotinli, Selim, Howlett, Cullan, Kahlhoefer, Felix, Renk, Janina J., Scott, Pat, Vincent, Aaron C., White, Martin and The GAMBIT Cosmology Workgroup (2021). Strengthening the bound on the mass of the lightest neutrino with terrestrial and cosmological experiments. Physical Review D, 103 (12) 123508. doi: 10.1103/physrevd.103.123508

  • Balázs, Csaba, van Beekveld, Melissa, Caron, Sascha, Dillon, Barry M., Farmer, Ben, Fowlie, Andrew, Garrido-Merchán, Eduardo C., Handley, Will, Hendriks, Luc, Jóhannesson, Guðlaugur, Leinweber, Adam, Mamužić, Judita, Martinez, Gregory D., Otten, Sydney, de Austri, Roberto Ruiz, Scott, Pat, Searle, Zachary, Stienen, Bob, Vanschoren, Joaquin and White, Martin (2021). A comparison of optimisation algorithms for high-dimensional particle and astrophysics applications. The Journal of High Energy Physics, 2021 (5) 108. doi: 10.1007/JHEP05(2021)108

  • Athron, Peter, Balázs, Csaba, Beniwal, Ankit, Camargo-Molina, J. Eliel, Fowlie, Andrew, Gonzalo, Tomás E., Hoof, Sebastian, Kahlhoefer, Felix, Marsh, David J. E., Prim, Markus Tobias, Scaffidi, Andre, Scott, Pat, Su, Wei, White, Martin, Wu, Lei and Zhang, Yang (2021). Global fits of axion-like particles to XENON1T and astrophysical data. Journal of High Energy Physics, 2021 (5) 159. doi: 10.1007/JHEP05(2021)159

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Grants

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Supervision

  • Doctor Philosophy

  • Doctor Philosophy

  • Doctor Philosophy

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Available Projects

  • New singlet particles with a very small mixing with the Higgs boson would be produced by decays from other heavier particles in the early Universe, in the so-called 'freeze-in' process. This process is expected to change quite a bit if the singlets have substantial self-interactions. The project is to explore those changes, and to build a general framework for calculating the resulting cosmological abundance of such singlets, so that it can be combined with constraints from astroparticle physics (worked out by an existing student) in a global statistical fit of such models.

    Starting point: arXiv:1812.07585

  • Thermal effects after inflation can cause the Universe to 'jump' from one vacuum to another. Depending on what the vacua look like, and how hot the Universe gets after inflation (i.e. the 'reheating temperature'), this is more or less likely. The project will look at what bounds this places on the reheating temperature for some simple but viable beyond-the-Standard Model particle theories possessing multiple minima in their potential, namely Type II/III/X/Y two-Higgs doublet models.

    Starting points: arXiv:1705.03677, arXiv:1307.1477

  • Dark matter interacts extremely weakly with regular matter, but it does still interact enough to scatter of nuclei occasionally in many models. The Sun sits in bath of dark matter particles, with many of them passing through it every day. Some dark matter particles would scatter off a nucleus in the Sun, and lose enough energy to become gravitationally bound to it. They would then return on bound orbits, scatter again and again, losing more energy and sinking down to the core of the Sun. In many models, they would then annihilate with each other, producing a shower of energetic particles. Those particles would include neutrinos, which travel straight through the Sun, and can be detected here on Earth using neutrino telescopes such as IceCube, Super-Kamiokande and ANTARES. The first part of the project is to combine the results of these three neutrino telescopes, to produce one of the strongest probes of interactions between dark matter and nuclei to date. The second part is to determine the projected sensitivity of the next generation of neutrino telescopes (KM3NeT, IceCube Gen2/Pingu, Hyper-Kamiokande), in order to build an analysis framework that will allow all three experiments to combine their results, and collaborators involved in the GAMBIT project (http://gambit.hepforge.org) to combine the results with those from all other experiments.

    Starting point: arxiv:1601.00653

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Publications

Book Chapter

  • Grevesse, N., Asplund, M., Sauval, A. J. and Scott, P. (2010). The chemical composition of the Sun. Synergies between Solar and Stellar Modelling. (pp. 177-182) edited by Maria Pia Di Mauro, Daniela Cardini and Marcella Marconi. Dordrecht, The Netherlands: Springer Netherlands. doi: 10.1007/978-90-481-9198-7_31

  • Grevesse, Nicolas, Asplund, Martin, Sauval, A. Jacques and Scott, Pat (2010). The new solar composition and the solar metallicity. The sun, the solar wind, and the heliosphere. (pp. 51-60) edited by Mari Paz Miralles and Jorge Sánchez Almeida. Dordrecht, The Netherlands: Springer Netherlands. doi: 10.1007/978-90-481-9787-3_6

Journal Article

  • Stöcker, Patrick, Balázs, Csaba, Bloor, Sanjay, Bringmann, Torsten, Gonzalo, Tomás E., Handley, Will, Hotinli, Selim, Howlett, Cullan, Kahlhoefer, Felix, Renk, Janina J., Scott, Pat, Vincent, Aaron C., White, Martin and The GAMBIT Cosmology Workgroup (2021). Strengthening the bound on the mass of the lightest neutrino with terrestrial and cosmological experiments. Physical Review D, 103 (12) 123508. doi: 10.1103/physrevd.103.123508

  • Balázs, Csaba, van Beekveld, Melissa, Caron, Sascha, Dillon, Barry M., Farmer, Ben, Fowlie, Andrew, Garrido-Merchán, Eduardo C., Handley, Will, Hendriks, Luc, Jóhannesson, Guðlaugur, Leinweber, Adam, Mamužić, Judita, Martinez, Gregory D., Otten, Sydney, de Austri, Roberto Ruiz, Scott, Pat, Searle, Zachary, Stienen, Bob, Vanschoren, Joaquin and White, Martin (2021). A comparison of optimisation algorithms for high-dimensional particle and astrophysics applications. The Journal of High Energy Physics, 2021 (5) 108. doi: 10.1007/JHEP05(2021)108

  • Athron, Peter, Balázs, Csaba, Beniwal, Ankit, Camargo-Molina, J. Eliel, Fowlie, Andrew, Gonzalo, Tomás E., Hoof, Sebastian, Kahlhoefer, Felix, Marsh, David J. E., Prim, Markus Tobias, Scaffidi, Andre, Scott, Pat, Su, Wei, White, Martin, Wu, Lei and Zhang, Yang (2021). Global fits of axion-like particles to XENON1T and astrophysical data. Journal of High Energy Physics, 2021 (5) 159. doi: 10.1007/JHEP05(2021)159

  • Renk, Janina J., Stöcker, Patrick, Bloor, Sanjay, Hotinli, Selim, Balázs, Csaba, Bringmann, Torsten, Gonzalo, Tomás E., Handley, Will, Hoof, Sebastian, Howlett, Cullan, Kahlhoefer, Felix, Scott, Pat, Vincent, Aaron C. and White, Martin (2021). CosmoBit: A GAMBIT module for computing cosmological observables and likelihoods. Journal of Cosmology and Astroparticle Physics, 2021 (2) 022. doi: 10.1088/1475-7516/2021/02/022

  • Buckley, Andy, Kvellestad, Anders, Raklev, Are, Scott, Pat, Sparre, Jon Vegard, Van den Abeele, Jeriek and Vazquez-Holm, Ingrid A. (2020). Xsec: the cross-section evaluation code. European Physical Journal C, 80 (12) 1106. doi: 10.1140/epjc/s10052-020-08635-y

  • Abdallah, Waleed, Salam, Shehu Abdus, Ahmadov, Azar, Ahriche, Amine, Alguero, Gaël, Allanach, Ben, Araz, Jack Y., Arbey, Alexandre, Arina, Chiara, Athron, Peter, Bagnaschi, Emanuele Angelo, Bai, Yang, Baker, Michael J., Balazs, Csaba, Barducci, Daniele, Bechtle, Philip, Bharucha, Aoife, Buckley, Andy, Butterworth, Jonathan, Cai, Haiying, Campagnari, Claudio, Cesarotti, Cari, Chrzaszcz, Marcin, Coccaro, Andrea, Conte, Eric, Cornell, Jonathan M., Corpe, Louie, Danninger, Matthias, Darmé, Luc ... Zurita, José (2020). Reinterpretation of LHC results for new physics: status and recommendations after Run 2. SciPost Physics, 9 (2) 022, 1-45. doi: 10.21468/scipostphys.9.2.022

  • Kvellestad, Anders, Scott, Pat and White, Martin (2020). GAMBIT and its application in the search for physics Beyond the Standard Model. Progress in Particle and Nuclear Physics, 113 103769, 103769. doi: 10.1016/j.ppnp.2020.103769

  • Hoof, Sebastian, Kahlhoefer, Felix, Scott, Pat, Weniger, Christoph and White, Martin (2019). Erratum: Axion global fits with Peccei-Quinn symmetry breaking before inflation using GAMBIT (Journal of High Energy Physics, (2019), 2019, 3, (191). Journal of High Energy Physics, 2019 (11) 99. doi: 10.1007/JHEP11(2019)099

  • Camargo-Molina, José Eliel, Markkanen, Tommi and Scott, Pat (2019). Dark energy without fine tuning. Journal of High Energy Physics, 2019 (10) 44. doi: 10.1007/jhep10(2019)044

  • Athron, Peter, Balázs, Csaba, Buckley, Andy, Cornell, Jonathan M., Danninger, Matthias, Farmer, Ben, Fowlie, Andrew, Gonzalo, Tomás E., Harz, Julia, Jackson, Paul, Kudzman-Blais, Rose, Kvellestad, Anders, Martinez, Gregory D., Petridis, Andreas, Raklev, Are, Rogan, Christopher, Scott, Pat, Sharma, Abhishek, White, Martin and Zhang, Yang (2019). Combined collider constraints on neutralinos and charginos. The European Physical Journal C, 79 (5) 395. doi: 10.1140/epjc/s10052-019-6837-x

  • Hoof, Sebastian, Kahlhoefer, Felix, Scott, Pat, Weniger, Christoph and White, Martin (2019). Axion global fits with Peccei-Quinn symmetry breaking before inflation using GAMBIT. Journal of High Energy Physics, 2019 (3) 191. doi: 10.1007/jhep03(2019)191

  • Athron, Peter, Balázs, Csaba, Beniwal, Ankit, Bloor, Sanjay, Camargo-Molina, José Eliel, Cornell, Jonathan M., Farmer, Ben, Fowlie, Andrew, E. Gonzalo, Tomás, Kahlhoefer, Felix, Kvellestad, Anders, Martinez, Gregory D., Scott, Pat, Vincent, Aaron C., Wild, Sebastian, White, Martin and Williams, Anthony G. (2019). Global analyses of Higgs portal singlet dark matter models using GAMBIT. The European Physical Journal C, 79 (1) 38, 1-28. doi: 10.1140/epjc/s10052-018-6513-6

  • Athron, Peter, Cornell, Jonathan M., Kahlhoefer, Felix, McKay, James, Scott, Pat and Wild, Sebastian (2018). Impact of vacuum stability, perturbativity and XENON1T on global fits of Z2 and Z3 scalar singlet dark matter. European Physical Journal C. Particles and Fields, 78 (10) 830, 830. doi: 10.1140/epjc/s10052-018-6314-y

  • McKay, James, Scott, Pat and Athron, Peter (2018). Pitfalls of iterative pole mass calculation in electroweak multiplets. The European Physical Journal Plus, 133 (10) 444. doi: 10.1140/epjp/i2018-12250-4

  • Clark, Hamish A., Scott, Pat, Trotta, Roberto and Lewis, Geraint F. (2018). Dark matter substructure cannot explain properties of the Fermi Galactic Centre excess. Journal of Cosmology and Astroparticle Physics, 2018 (7) 060, 1-14. doi: 10.1088/1475-7516/2018/07/060

  • McKay, James and Scott, Pat (2018). Two-loop mass splittings in electroweak multiplets: winos and minimal dark matter. Physical Review D, 97 (5) 055049. doi: 10.1103/physrevd.97.055049

  • Athron, Peter, Balazs, Csaba, Bringmann, Torsten, Buckley, Andy, Chrząszcz, Marcin, Conrad, Jan, Cornell, Jonathan M., Dal, Lars A., Dickinson, Hugh, Edsjö, Joakim, Farmer, Ben, Gonzalo, Tomás E., Jackson, Paul, Krislock, Abram, Kvellestad, Anders, Lundberg, Johan, McKay, James, Mahmoudi, Farvah, Martinez, Gregory D., Putze, Antje, Raklev, Are, Ripken, Joachim, Rogan, Christopher, Saavedra, Aldo, Savage, Christopher, Scott, Pat, Seo, Seon-Hee, Serra, Nicola, Weniger, Christoph ... The GAMBIT Collaboration (2018). GAMBIT: the global and modular beyond-the-standard-model inference tool : Addendum for GAMBIT 1.1: Mathematica backends, SUSYHD interface and updated likelihoods. The European Physical Journal C, 78 (2) 98. doi: 10.1140/epjc/s10052-017-5513-2

  • Athron, Peter, Balázs, Csaba, Dal, Lars A., Edsjö, Joakim, Farmer, Ben, Gonzalo, Tomás E., Kvellestad, Anders, McKay, James, Putze, Antje, Rogan, Chris, Scott, Pat, Weniger, Christoph and White, Martin (2018). SpecBit, DecayBit and PrecisionBit: GAMBIT modules for computing mass spectra, particle decay rates and precision observables. The European Physical Journal C, 78 (1) 22. doi: 10.1140/epjc/s10052-017-5390-8

  • Athron, Peter, Balázs, Csaba, Bringmann, Torsten, Buckley, Andy, Chrząszcz, Marcin, Conrad, Jan, Cornell, Jonathan M., Dal, Lars A., Edsjö, Joakim, Farmer, Ben, Jackson, Paul, Krislock, Abram, Kvellestad, Anders, Mahmoudi, Farvah, Martinez, Gregory D., Putze, Antje, Raklev, Are, Rogan, Christopher, Saavedra, Aldo, Savage, Christopher, Scott, Pat, Serra, Nicola, Weniger, Christoph and White, Martin (2017). A global fit of the MSSM with GAMBIT. European Physical Journal C, 77 (12) 879. doi: 10.1140/epjc/s10052-017-5196-8

  • Athron, Peter, Balázs, Csaba, Bringmann, Torsten, Buckley, Andy, Chrząszcz, Marcin, Conrad, Jan, Cornell, Jonathan M., Dal, Lars A., Edsjö, Joakim, Farmer, Ben, Jackson, Paul, Krislock, Abram, Kvellestad, Anders, Mahmoudi, Farvah, Martinez, Gregory D., Putze, Antje, Raklev, Are, Rogan, Christopher, de Austri, Roberto Ruiz, Saavedra, Aldo, Savage, Christopher, Scott, Pat, Serra, Nicola, Weniger, Christoph and White, Martin (2017). Global fits of GUT-scale SUSY models with GAMBIT. European Physical Journal C, 77 (12) 824. doi: 10.1140/epjc/s10052-017-5167-0

  • Balázs, Csaba, Buckley, Andy, Dal, Lars A., Farmer, Ben, Jackson, Paul, Krislock, Abram, Kvellestad, Anders, Murnane, Daniel, Putze, Antje, Raklev, Are, Rogan, Christopher, Saavedra, Aldo, Scott, Pat, Weniger, Christoph and White, Martin (2017). ColliderBit: a GAMBIT module for the calculation of high-energy collider observables and likelihoods. European Physical Journal C, 77 (11) 795. doi: 10.1140/epjc/s10052-017-5285-8

  • The GAMBIT Scanner Workgroup, Martinez, Gregory D., McKay, James, Farmer, Ben, Scott, Pat, Roebber, Elinore, Putze, Antje and Conrad, Jan (2017). Comparison of statistical sampling methods with ScannerBit, the GAMBIT scanning module. The European Physical Journal C, 77 (11) 761, 1-49. doi: 10.1140/epjc/s10052-017-5274-y

  • The GAMBIT Flavour Workgroup, Bernlochner, Florian U., Chrząszcz, Marcin, Dal, Lars A., Farmer, Ben, Jackson, Paul, Kvellestad, Anders, Mahmoudi, Farvah, Putze, Antje, Rogan, Christopher, Scott, Pat, Serra, Nicola, Weniger, Christoph and White, Martin (2017). FlavBit: a GAMBIT module for computing flavour observables and likelihoods. The European Physical Journal C, 77 (11) 786. doi: 10.1140/epjc/s10052-017-5157-2

  • Athron, Peter, Balazs, Csaba, Bringmann, Torsten, Buckley, Andy, Chrząszcz, Marcin, Conrad, Jan, Cornell, Jonathan M., Dal, Lars A., Dickinson, Hugh, Edsjö, Joakim, Farmer, Ben, Gonzalo, Tomás E., Jackson, Paul, Krislock, Abram, Kvellestad, Anders, Lundberg, Johan, McKay, James, Mahmoudi, Farvah, Martinez, Gregory D., Putze, Antje, Raklev, Are, Ripken, Joachim, Rogan, Christopher, Saavedra, Aldo, Savage, Christopher, Scott, Pat, Seo, Seon-Hee, Serra, Nicola, Weniger, Christoph ... Wild, Sebastian (2017). GAMBIT: the global and modular beyond-the-standard-model inference tool. European Physical Journal C, 77 (11) 784. doi: 10.1140/epjc/s10052-017-5321-8

  • Busoni, Giorgio, Simone, Andrea De, Scott, Pat and Vincent, Aaron C. (2017). Evaporation and scattering of momentum- and velocity-dependent dark matter in the Sun. Journal of Cosmology and Astroparticle Physics, 2017 (10) 037, 1-32. doi: 10.1088/1475-7516/2017/10/037

  • Athron, Peter, Balázs, Csaba, Bringmann, Torsten, Buckley, Andy, Chrząszcz, Marcin, Conrad, Jan, Cornell, Jonathan M., Dal, Lars A., Edsjö, Joakim, Farmer, Ben, Jackson, Paul, Kahlhoefer, Felix, Krislock, Abram, Kvellestad, Anders, McKay, James, Mahmoudi, Farvah, Martinez, Gregory D., Putze, Antje, Raklev, Are, Rogan, Christopher, Saavedra, Aldo, Savage, Christopher, Scott, Pat, Serra, Nicola, Weniger, Christoph and White, Martin (2017). Status of the scalar singlet dark matter model. European Physical Journal C, 77 (8) 568. doi: 10.1140/epjc/s10052-017-5113-1

  • Albert, Andreas, Bauer, Martin, Brooke, Jim, Buchmueller, Oliver, Cerdeño, David G., Citron, Matthew, Davies, Gavin, de Cosa, Annapaola, De Roeck, Albert, De Simone, Andrea, Du Pree, Tristan, Flaecher, Henning, Fairbairn, Malcolm, Ellis, John, Grohsjean, Alexander, Hahn, Kristian, Haisch, Ulrich, Harris, Philip C., Khoze, Valentin V., Landsberg, Greg, McCabe, Christopher, Penning, Bjoern, Sanz, Veronica, Schwanenberger, Christian, Scott, Pat and Wardle, Nicholas (2017). Towards the next generation of simplified Dark Matter models. Physics of the Dark Universe, 16, 49-70. doi: 10.1016/j.dark.2017.02.002

  • Clark, Hamish A., Iwanus, Nikolas, Elahi, Pascal J., Lewis, Geraint F. and Scott, Pat (2017). Heating of galactic gas by dark matter annihilation in ultracompact minihalos. Journal of Cosmology and Astroparticle Physics, 2017 (5) 048, 1-13. doi: 10.1088/1475-7516/2017/05/048

  • Geytenbeek, Ben, Rao, Soumya, Scott, Pat, Serenelli, Aldo, Vincent, Aaron C., White, Martin and Williams, Anthony G. (2017). Effect of electromagnetic dipole dark matter on energy transport in the solar interior. Journal of Cosmology and Astroparticle Physics, 2017 (3) 029, 029-029. doi: 10.1088/1475-7516/2017/03/029

  • White, Martin and Scott, Pat (2017). When supercomputers go over to the dark side. Physics World, 30 (3), 42-46. doi: 10.1088/2058-7058/30/3/38

  • Clark, Hamish A., Lewis, Geraint F. and Scott, Pat (2017). Erratum: Investigating dark matter substructure with pulsar timing - I. Constraints on ultracompact minihaloes [MNRAS, 464, (2017) (2468)]doi 10.1093/mnras/stv2743. Monthly Notices of the Royal Astronomical Society, 464 (2), 2468-2468. doi: 10.1093/mnras/stw2582

  • Clark, Hamish A., Lewis, Geraint F. and Scott, Pat (2017). Erratum: Investigating dark matter substructure with pulsar timing - II. Improved limits on small-scale cosmology [MNRAS, 456, 2 (2016) (1402-1409)] DOI:10.1093/mnras/stv2529. Monthly Notices of the Royal Astronomical Society, 464 (1), 955-956. doi: 10.1093/mnras/stw2305

  • Vincent, Aaron C., Scott, Pat and Serenelli, Aldo (2016). Updated constraints on velocity and momentum-dependent asymmetric dark matter. Journal of Cosmology and Astroparticle Physics, 2016 (11) 007, 007-007. doi: 10.1088/1475-7516/2016/11/007

  • Aslanyan, Grigor, Price, Layne C., Adams, Jenni, Bringmann, Torsten, Clark, Hamish A., Easther, Richard, Lewis, Geraint F. and Scott, Pat (2016). Ultracompact minihalos as probes of inflationary cosmology. Physical Review Letters, 117 (14) 141102. doi: 10.1103/PhysRevLett.117.141102

  • Serenelli, Aldo, Scott, Pat, Villante, Francesco L., Vincent, Aaron C., Asplund, Martin, Basu, Sarbani, Grevesse, Nicolas and Peña-Garay, Carlos (2016). Implications of solar wind measurements for solar models and composition. Monthly Notices of the Royal Astronomical Society, 463 (1), 2-9. doi: 10.1093/mnras/stw1927

  • Beniwal, Ankit, Rajec, Filip, Savage, Christopher, Scott, Pat, Weniger, Christoph, White, Martin and Williams, Anthony G. (2016). Combined analysis of effective Higgs portal dark matter models. Physical Review D, 93 (11) 115016, 115016. doi: 10.1103/PhysRevD.93.115016

  • Aartsen, M. G., Abraham, K., Ackermann, M., Adams, J., Aguilar, J. A., Ahlers, M., Ahrens, M., Altmann, D., Anderson, T., Ansseau, I., Anton, G., Archinger, M., Arguelles, C., Arlen, T. C., Auffenberg, J., Bai, X., Barwick, S. W., Baum, V., Bay, R., Beatty, J. J., Tjus, J. Becker, Becker, K. H., Beiser, E., Benzvi, S., Berghaus, P., Berley, D., Bernardini, E., Bernhard, A., Besson, D. Z. ... Zoll, M. (2016). Improved limits on dark matter annihilation in the Sun with the 79-string IceCube detector and implications for supersymmetry. Journal of Cosmology and Astroparticle Physics, 2016 (4) 022, 022-022. doi: 10.1088/1475-7516/2016/04/022

  • Clark, Hamish A., Lewis, Geraint F. and Scott, Pat (2016). Investigating dark matter substructure with pulsar timing: I. Constraints on ultracompact minihaloes. Monthly Notices of the Royal Astronomical Society, 456 (2), 1394-1401. doi: 10.1093/mnras/stv2743

  • Clark, Hamish A., Lewis, Geraint F. and Scott, Pat (2016). Investigating dark matter substructure with pulsar timing: II. Improved limits on small-scale cosmology. Monthly Notices of the Royal Astronomical Society, 456 (2), 1402-1409. doi: 10.1093/mnras/stv2529

  • Cline, James M., Kainulainen, Kimmo, Scott, Pat and Weniger, Christoph (2015). Erratum: Update on scalar singlet dark matter (Physical Review D - Particles, Fields, Gravitation and Cosmology (2013) 88 (055025)). Physical Review D, 92 (3) 039906, 039906. doi: 10.1103/PhysRevD.92.039906

  • Vincent, Aaron C., Serenelli, Aldo and Scott, Pat (2015). Generalised form factor dark matter in the Sun. Journal of Cosmology and Astroparticle Physics, 2015 (8) 040, 040-040. doi: 10.1088/1475-7516/2015/08/040

  • Anthonisen, Madeleine, Brandenberger, Robert and Scott, Pat (2015). Constraints on cosmic strings from ultracompact minihalos. Physical Review D - Particles, Fields, Gravitation and Cosmology, 92 (2) 023521, 1-15. doi: 10.1103/PhysRevD.92.023521

  • Silverwood, Hamish, Weniger, Christoph, Scott, Pat and Bertone, Gianfranco (2015). A realistic assessment of the CTA sensitivity to dark matter annihilation. Journal of Cosmology and Astroparticle Physics, 2015 (3) 055, 055-055. doi: 10.1088/1475-7516/2015/03/055

  • Vincent, Aaron C., Scott, Pat and Serenelli, Aldo (2015). Possible indication of momentum-dependent asymmetric dark matter in the sun. Physical Review Letters, 114 (8) 081302. doi: 10.1103/PhysRevLett.114.081302

  • Scott, Pat, Grevesse, Nicolas, Asplund, Martin, Sauval, A. Jacques, Lind, Karin, Takeda, Yoichi, Collet, Remo, Trampedach, Regner and Hayek, Wolfgang (2015). The elemental composition of the Sun: I. The intermediate mass elements Na to Ca. Astronomy and Astrophysics, 573 A25, A25. doi: 10.1051/0004-6361/201424109

  • Scott, Pat, Asplund, Martin, Grevesse, Nicolas, Bergemann, Maria and Sauval, A. Jacques (2015). The elemental composition of the Sun: II. The iron group elements Sc to Ni. Astronomy and Astrophysics, 573 A26, A26. doi: 10.1051/0004-6361/201424110

  • Grevesse, Nicolas, Scott, Pat, Asplund, Martin and Sauval, A. Jacques (2015). The elemental composition of the Sun: III. The heavy elements Cu to Th. Astronomy and Astrophysics, 573 A27, A27. doi: 10.1051/0004-6361/201424111

  • Pierre, Mathias, Siegal-Gaskins, Jennifer M. and Scott, Pat (2014). Erratum: Sensitivity of CTA to dark matter signals from the Galactic center (vol 06, pg 024, 2014). Journal of Cosmology and Astroparticle Physics, 2014 (10) E01, E01-E01. doi: 10.1088/1475-7516/2014/10/e01

  • Pierre, Mathias, Siegal-Gaskins, Jennifer M. and Scott, Pat (2014). Sensitivity of CTA to dark matter signals from the galactic center. Journal of Cosmology and Astroparticle Physics, 2014 (6) 024, 024-024. doi: 10.1088/1475-7516/2014/06/024

  • Vincent, Aaron C. and Scott, Pat (2014). Thermal conduction by dark matter with velocity and momentum-dependent cross-sections. Journal of Cosmology and Astroparticle Physics, 2014 (4) 019, 019-019. doi: 10.1088/1475-7516/2014/04/019

  • Shandera, Sarah, Erickcek, Adrienne L., Scott, Pat and Galarza, Jhon Yana (2013). Number counts and non-Gaussianity. Physical Review D, 88 (10) 103506. doi: 10.1103/PhysRevD.88.103506

  • Cline, James M., Scott, Pat, Kainulainen, Kimmo and Weniger, Christoph (2013). Update on scalar singlet dark matter. Physical Review D: covering particles, fields, gravitation, and cosmology, 88 (5) 055025, 055025. doi: 10.1103/PhysRevD.88.055025

  • Vincent, A. C., Scott, P. and Trampedach, R. (2013). Light bosons in the photosphere and the solar abundance problem. Monthly Notices of the Royal Astronomical Society, 432 (4), 3332-3339. doi: 10.1093/mnras/stt683

  • Cline, James M. and Scott, Pat (2013). Erratum: Dark matter CMB constraints and likelihoods for poor particle physicists (vol 03, pg 044, 2013). Journal of Cosmology and Astroparticle Physics, 2013 (5), E01-E01. doi: 10.1088/1475-7516/2013/05/e01

  • Zackrisson, Erik, Asadi, Saghar, Wiik, Kaj, Jonsson, Jakob, Scott, Pat, Datta, Kanan K., Friedrich, Martina M., Jensen, Hannes, Johansson, Joel, Rydberg, Claes-Erik and Sandberg, Andreas (2013). Hunting for dark halo substructure using submilliarcsecond-scale observations of macrolensed radio jets. Monthly Notices of the Royal Astronomical Society, 431 (3), 2172-2183. doi: 10.1093/mnras/stt303

  • Rydberg, Claes-Erik, Zackrisson, Erik, Lundqvist, Peter and Scott, Pat (2013). Detection of isolated population III stars with the James Webb Space Telescope. Monthly Notices of the Royal Astronomical Society, 429 (4), 3658-3664. doi: 10.1093/mnras/sts653

  • Cline, James M. and Scott, Pat (2013). Dark matter CMB constraints and likelihoods for poor particle physicists. Journal of Cosmology and Astroparticle Physics, 2013 (3) 044, 044-044. doi: 10.1088/1475-7516/2013/03/044

  • Silverwood, Hamish, Scott, Pat, Danninger, Matthias, Savage, Christopher, Edsjo, Joakim, Adams, Jenni, Brown, Anthony M. and Hultqvist, Klas (2013). Sensitivity of IceCube-DeepCore to neutralino dark matter in the MSSM-25. Journal of Cosmology and Astroparticle Physics, 2013 (3) 027, 1-17. doi: 10.1088/1475-7516/2013/03/027

  • Scott, Pat (2012). Pippi - Painless parsing, post-processing and plotting of posterior and likelihood samples. European Physical Journal Plus, 127 (11) 138. doi: 10.1140/epjp/i2012-12138-3

  • Scott, P., Savage, C., Edsjo, J., Collaboration, IceCube, Abbasi, R., Abdou, Y., Ackermann, M., Adams, J., Aguilar, J. A., Ahlers, M., Altmann, D., Andeen, K., Enberg, J. Au Ff, Bai, X., Baker, M., Barwick, S. W., Baum, V., Bay, R., Beattie, K., Beatty, J. J., Bechet, S., Tjus, J. Becker, Becker, K. -H., Bell, M., Benabderrahmane, M. L., BenZvi, S., Berdermann, J., Berghaus, P., Berley, D. ... Zoll, M. (2012). Use of event-level neutrino telescope data in global fits for theories of new physics. Journal of Cosmology and Astroparticle Physics (11) doi: 10.1088/1475-7516/2012/11/057

  • Strege, Charlotte, Trotta, Roberto, Bertone, Gianfranco, Peter, Annika H. G. and Scott, Pat (2012). Fundamental statistical limitations of future dark matter direct detection experiments. Physical Review D: covering particles, fields, gravitation, and cosmology, 86 (2) 023507, 023507. doi: 10.1103/PhysRevD.86.023507

  • Bringmann, Torsten, Scott, Pat and Akrami, Yashar (2012). Improved constraints on the primordial power spectrum at small scales from ultracompact minihalos. Physical Review D - Particles, Fields, Gravitation and Cosmology, 85 (12) 125027, 125027. doi: 10.1103/PhysRevD.85.125027

  • Scott, Pat, Cowan, Anna I. and Stricker, Christian (2012). Quantifying impacts of short-term plasticity on neuronal information transfer. Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 85 (4) 041921, 1-15. doi: 10.1103/PhysRevE.85.041921

  • Scott, Pat, Venkatesan, Aparna, Roebber, Elinore, Gondolo, Paolo, Pierpaoli, Elena and Holder, Gil (2011). Impacts of dark stars on reionization and signatures in the cosmic microwave background. Astrophysical Journal, 742 (2) 129, 129. doi: 10.1088/0004-637X/742/2/129

  • Ripken, Joachim, Conrad, Jan and Scott, Pat (2011). Implications for constrained supersymmetry of combined H.E.S.S. observations of dwarf galaxies, the Galactic halo and the Galactic Centre. Journal of Cosmology and Astroparticle Physics, 2011 (11) 004, 004-004. doi: 10.1088/1475-7516/2011/11/004

  • Akrami, Yashar, Savage, Christopher, Scott, Pat, Conrad, Jan and Edsjö, Joakim (2011). Statistical coverage for supersymmetric parameter estimation: A case study with direct detection of dark matter. Journal of Cosmology and Astroparticle Physics, 2011 (7) 002, 002-002. doi: 10.1088/1475-7516/2011/07/002

  • Akrami, Yashar, Savage, Christopher, Scott, Pat, Conrad, Jan and Edsjö, Joakim (2011). How well will ton-scale dark matter direct detection experiments constrain minimal supersymmetry?. Journal of Cosmology and Astroparticle Physics, 2011 (4) 012, 012-012. doi: 10.1088/1475-7516/2011/04/012

  • Zackrisson, Erik, Scott, Pat, Rydberg, Claes-Erik, Iocco, Fabio, Sivertsson, Sofia, Östlin, Göran, Mellema, Garrelt, Iliev, Ilian T. and Shapiro, Paul R. (2011). Erratum: Observational constraints on supermassive dark stars. Monthly Notices of the Royal Astronomical Society, 410 (1). doi: 10.1111/j.1745-3933.2010.00981.x

  • Scott, Pat and Sivertsson, Sofia (2010). Erratum: Gamma rays from ultracompact primordial dark matter minihalos (Physical Review Letters (2009) 103 (211301)). Physical Review Letters, 105 (11) 119902 doi: 10.1103/PhysRevLett.105.119902

  • Zackrisson, Erik, Scott, Pat, Rydberg, Claes-Erik, Iocco, Fabio, Sivertsson, Sofia, Östlin, Göran, Mellema, Garrelt, Iliev, Ilian T. and Shapiro, Paul R. (2010). Observational constraints on supermassive dark stars. Monthly Notices of the Royal Astronomical Society, 407 (1). doi: 10.1111/j.1745-3933.2010.00908.x

  • Akrami, Yashar, Scott, Pat, Edsjo, Joakim, Conrad, Jan and Bergstrom, Lars (2010). A profile likelihood analysis of the constrained MSSM with genetic algorithms. Journal of High Energy Physics, 2010 (4) 57. doi: 10.1007/jhep04(2010)057

  • Scott, Pat, Conrad, Jan, Edsjö, Joakim, Bergström, Lars, Farnier, Christian and Akrami, Yashar (2010). Direct constraints on minimal supersymmetry from Fermi-LAT observations of the dwarf galaxy Segue 1. Journal of Cosmology and Astroparticle Physics, 2010 (1) 031, 031-031. doi: 10.1088/1475-7516/2010/01/031

  • Grevesse, N., Asplund, M., Sauval, A. J. and Scott, P. (2010). The chemical composition of the Sun. Astrophysics and Space Science, 328 (1), 179-183. doi: 10.1007/s10509-010-0288-z

  • Zackrisson, Erik, Scott, Pat, Rydberg, Claes-Erik, Iocco, Fabio, Edvardsson, Bengt, Östlin, Göran, Sivertsson, Sofia, Zitrin, Adi, Broadhurst, Tom and Gondolo, Paolo (2010). Finding high-redshift dark stars with the James Webb space telescope. Astrophysical Journal, 717 (1), 257-267. doi: 10.1088/0004-637X/717/1/257

  • Scott, Pat, Fairbairn, Malcolm and Edsjo, Joakim (2009). Erratum: Dark stars at the Galactic Centre - the main sequence (vol 394, pg 82, 2009). Monthly Notices of the Royal Astronomical Society, 400 (4), 2207-2207. doi: 10.1111/j.1365-2966.2009.15727.x

  • Scott, Pat and Sivertsson, Sofia (2009). Gamma rays from ultracompact primordial dark matter minihalos. Physical Review Letters, 103 (21) 211301. doi: 10.1103/PhysRevLett.103.211301

  • Asplund, Martin, Grevesse, Nicolas, Sauval, A. Jacques and Scott, Pat (2009). The chemical composition of the sun. Annual Review of Astronomy and Astrophysics, 47, 481-522. doi: 10.1146/annurev.astro.46.060407.145222

  • Scott, Pat, Fairbairn, Malcolm and Edsjo, Joakim (2009). Dark stars at the Galactic Centre - the main sequence. Monthly Notices of the Royal Astronomical Society, 394 (1), 82-104. doi: 10.1111/j.1365-2966.2008.14282.x

  • Scott, Pat, Asplund, Martin, Grevesse, Nicolas and Sauval, A. Jacques (2009). On the solar nickel and oxygen abundances. Astrophysical Journal, 691 (2), L119-L122. doi: 10.1088/0004-637X/691/2/L119

  • Fairbairn, Malcolm, Scott, Pat and Edsjö, Joakim (2008). The zero age main sequence of WIMP burners. Physical Review D - Particles, Fields, Gravitation and Cosmology, 77 (4) 047301. doi: 10.1103/PhysRevD.77.047301

  • Scott, P. C., Asplund, M., Grevesse, N. and Sauval, A. J. (2006). Line formation in solar granulation VII. CO lines and the solar C and O isotopic abundances. Astronomy and Astrophysics, 456 (2), 675-688. doi: 10.1051/0004-6361:20064986

Conference Publication

  • Scott, Pat (2017). Dark matter theory: Implications and future prospects for fermi. 7th International Fermi Symposium, IFS 2017, Garmisch-Partenkirchen, Germany, 15 - 20 October 2017. Trieste, Italy: Sissa Medialab Srl. doi: 10.22323/1.312.0167

  • Beniwal, Ankit, Rajec, Filip, Savage, Christopher, Scott, Pat, Weniger, Christoph, White, Martin and Williams, Anthony G. (2016). Combined analysis of effective Higgs portal dark matter models. International Conference on High Energy Physics, Chicago, ILL, United States, 3-10 August 2016. Trieste, Italy: Sissa Medialab.

  • Grevesse, N., Asplund, M., Sauval, J. and Scott, P. (2013). Why GN93 should not be used anymore. Liège International Astrophysical Colloquium. Ageing Low Mass Stars: From Red Giants to White Dwarfs, Liège, Belgium, 9-13 July 2012. Les Ulis, France: E D P Sciences. doi: 10.1051/epjconf/20134301004

  • Scott, Pat, Bringmann, Torsten and Akrami, Yashar (2012). Constraints on small-scale cosmological perturbations from gamma-ray searches for dark matter. 12th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2011, Munich, Germany, 5 - 9 September 2011. Bristol, United Kingdom: Institute of Physics Publishing. doi: 10.1088/1742-6596/375/1/032012

  • Rydberg, Claes-Erik, Zackrisson, Erik and Scott, Pat (2011). Can the James Webb Space Telescope detect isolated population III stars?. Cosmic Radiation Fields: Sources in the early Universe, Desy, Germany, 9-12 November 2010. Trieste, Italy: Sissa Medialab. doi: 10.22323/1.121.0026

  • Grevesse, N., Asplund, M., Sauval, A. J. and Scott, P. (2011). The chemical composition of the sun. International Colloquium on Atomic Spectra and Oscillator Strengths for Astrophysical and Laboratory Plasmas, Berkeley, CA, United States, 3-7 August 2010. Ottawa, ON, Canada: Canadian Science Publishing. doi: 10.1139/p10-119

  • Scott, Pat (2010). Dark stars: Structure, evolution and impacts upon the high-redshift Universe. Trieste, Italy: Sissa Medialab. doi: 10.22323/1.121.0021

  • Scott, Pat, Fairbairn, Malcolm and Edsjo, Joakim (2009). Impacts of WIMP dark matter upon stellar evolution: main-sequence stars. Identification of dark matter, Stockholm, Sweden, 18-22 August 2008. Trieste, Italy: Sissa Medialab. doi: 10.22323/1.064.0073

  • Scott, Pat, Fairbairn, Malcolm and Edsjo, Joakim (2009). Impacts of WIMP dark matter upon stellar evolution: main-sequence stars. Identification of dark matter, Stockholm, Sweden, 18-22 August 2008. Trieste, Italy: Sissa Medialab. doi: 10.22323/1.064.0073

  • Scott, Pat, Edjsö, Joakim and Fairbairn, Malcolm (2009). The DarkStars code: a publicly available dark stellar evolution package. 7th International Heidelberg Conference on Dark Matter in Astro and Particle Physics (DARK 2009), Christchurch, New Zealand, 18-24 January 2009. Hackensack, NJ, United States: World Scientific . doi: 10.1142/9789814293792_0024

  • Scott, P. C., Edsjö, J. and Fairbairn, M. (2008). Low mass stellar evolution with WIMP capture and annihilation. International Heidelberg Conference on Dark Matter in Astroparticle and Particle Physics, Sydney, Australia, 24-28 September 2007. World Scientific Publishing. doi: 10.1142/9789812814357_0038

Other Outputs

Grants (Administered at UQ)

PhD and MPhil Supervision

Note for students: Dr Pat Scott is not currently available to take on new students.

Current Supervision

  • Doctor Philosophy — Principal Advisor

    Other advisors:

  • Doctor Philosophy — Associate Advisor

  • Doctor Philosophy — Associate Advisor

Possible Research Projects

Note for students: The possible research projects listed on this page may not be comprehensive or up to date. Always feel free to contact the staff for more information, and also with your own research ideas.

Dr Pat Scott is not currently available to take on new students.

  • New singlet particles with a very small mixing with the Higgs boson would be produced by decays from other heavier particles in the early Universe, in the so-called 'freeze-in' process. This process is expected to change quite a bit if the singlets have substantial self-interactions. The project is to explore those changes, and to build a general framework for calculating the resulting cosmological abundance of such singlets, so that it can be combined with constraints from astroparticle physics (worked out by an existing student) in a global statistical fit of such models.

    Starting point: arXiv:1812.07585

  • Thermal effects after inflation can cause the Universe to 'jump' from one vacuum to another. Depending on what the vacua look like, and how hot the Universe gets after inflation (i.e. the 'reheating temperature'), this is more or less likely. The project will look at what bounds this places on the reheating temperature for some simple but viable beyond-the-Standard Model particle theories possessing multiple minima in their potential, namely Type II/III/X/Y two-Higgs doublet models.

    Starting points: arXiv:1705.03677, arXiv:1307.1477

  • Dark matter interacts extremely weakly with regular matter, but it does still interact enough to scatter of nuclei occasionally in many models. The Sun sits in bath of dark matter particles, with many of them passing through it every day. Some dark matter particles would scatter off a nucleus in the Sun, and lose enough energy to become gravitationally bound to it. They would then return on bound orbits, scatter again and again, losing more energy and sinking down to the core of the Sun. In many models, they would then annihilate with each other, producing a shower of energetic particles. Those particles would include neutrinos, which travel straight through the Sun, and can be detected here on Earth using neutrino telescopes such as IceCube, Super-Kamiokande and ANTARES. The first part of the project is to combine the results of these three neutrino telescopes, to produce one of the strongest probes of interactions between dark matter and nuclei to date. The second part is to determine the projected sensitivity of the next generation of neutrino telescopes (KM3NeT, IceCube Gen2/Pingu, Hyper-Kamiokande), in order to build an analysis framework that will allow all three experiments to combine their results, and collaborators involved in the GAMBIT project (http://gambit.hepforge.org) to combine the results with those from all other experiments.

    Starting point: arxiv:1601.00653

  • Depending on exactly what went on in the early Universe, the first dark matter halos may have formed extremely early, when there was nothing to dirupt their growth into extremely dense structures. These objects, known as ultracompact minihalos (UCMHs) may still be around today. Searching for them is one of the best ways to probe what happenened on small scales in the early Universe, before the formation of the cosmic microwave background. The project is to

    - simulate the formation of UCMHs in the early Universe, in order to better understand just how compact they really should be,

    - improve searches for them with gamma rays and pulsar timing (as tested using the Square Kilometre Array radio telescope), and

    - use the results of those searches together with searches for primordial black holes to test theories of early Universe physics such as inflation.

    Starting points: arxiv:1110.2484, arxiv:1905.05766

  • Many of the simplest models for dark matter assume that its particles cannot interact with each other. However, the observational limits that we have on this (from the Bullet Cluster) actually still permit a relatively high self-interaction rate -- enough to possibly explain why we don't see that many cusps in dark matter density profiles (the "core-cusp problem"), why there are less satellite galaxies around our own than expected (the "missing satellite problem") and why small galaxies don't seem to have more stars (the "too big to fail problem"). The Global and Modular Beyond-the-Standard Model Inference Tool (GAMBIT; https://gambit.hepforge.org) is a large-scale project aimed at combining all relevant constraints on all of the most compelling models for dark matter and other new particles. The project is to implement predictions and observational constraints on self-interacting dark matter models within GAMBIT, including from the large-scale structure of the Universe, and to use them carry out the most complete tests to date of the self-interacting dark matter hypothesis.

    Starting points: arxiv:1705.07908, arxiv:1205.5809

  • The simplest model for dark matter is another scalar particle, with no charges under any of the Standard Model gauge groups. There are many very different constraints on this model. The project is to extend existing combinations of those constraints to also consider stability of the electroweak vacuum in the case that singlet gets a vacuum expectation value of its own, and to improve existing treatments of unitarity and perturbativity.

    Starting points: arXiv:1806.11281, arXiv:1805.07306