What are the fundamental constituents of the universe and the laws that govern them?

These are the big questions that the theoretical particle physics group are trying to answer. We have diverse research interests that range from astroparticle and cosmological physics that describe the physics of the early universe, to the physics of the Standard Model and beyond that describes the fundamental interactions and matter of the subnuclear world. Group members have played a major role in exploring neutrino physics and the identity of dark matter. Research areas of the Standard Model include the physics of the famed Higgs boson and elucidating why there is more matter than anti-matter in the universe. We also explore frontiers Beyond the Standard Model such as supersymmetry and extra dimensions, and how they may be discovered experimentally.

These are exciting times for particle physics as we are in the middle of the era of the Large Hadron Collider (LHC) experiment at CERN. The LHC has already discovered the Higgs boson; what it finds next could provide the answers to some of the most fundamental questions regarding the quantum Universe.

• Dark Matter

  

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• Neutrinos

  

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• Beyond the Standard Model

  

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Upcoming

Past

• 2024

  
  

  • Timothy Martonhelyi (U. Massachusetts, Amherst)

    10:30am Dec 18, 2024: Phenomenological Studies of Heavy Spin-One Resonances at Current and Future Colliders
  • Suro Kim (KIAS)

    10:30am Dec 17, 2024: Phenomenological applications of positivity bounds
  • Pyungwon Ko (KIAS)

    10:30am Dec 16, 2024: Thermal WIMP, muon g-2 and B^+ -> K^+ \nu \bar{\nu} in U(1)_{L_\mu - L_\tau} models
  • Innes Bigaran (Northwestern)

    10:30am Dec 12, 2024: Tau physics as a portal for discovery
  • Chris Allton (Swansea)

    10:30am Oct 23, 2024: Some like it hot: breaking the strong interaction
  • Nicholas Rodd (LBNL)

    2:00pm Oct 10, 2024: A Quantum Description of Wave Dark Matter
  • Tony Gherghetta (U. Minnesota)

    2:00pm Sep 12, 2024: A Holographic View of the QCD Axion
  • Sokratis Trifinopoulos (MIT)

    11:00am Sep 2, 2024: New Physics at Colliders: The present, the future, and the far future
  • Francesco Sannino (Naples U. and Southern Denmark U.)

    10:00am Aug 16, 2024: Living on the edge: Quantum black hole physics from the event horizon
  • Zhi-Wei Wang (UESTC, Chengdu)

    11:00am Aug 15, 2024: Phase Transition and Gravitational Wave in Strongly Coupled Dark Matter
  • Felix Yu (JGU Mainz)

    4:00pm May 22, 2024: Consistent Electroweak Phenomenology of a Nearly Degenerate Z' Boson
  • Ivan Esteban (Basque U.)

    4:00pm May 8, 2024: Accreting neutron stars: the potential third MeV astrophysical neutrino source
  • Maximilian Ruhdorfer (Cornell)

    10:00am Apr 24, 2024: Instanton NDA for Axion Models
  • Anna Suliga (UC Berkeley)

    10:00am Apr 17, 2024: Strategies for detecting low-energy neutrino fluxes
  • William DeRocco (UC Santa Cruz)

    1:00pm Mar 25, 2024: Exploring the dark side with high-cadence microlensing
  • Gustavo Marques-Tavares (Maryland)

    10:00am Mar 13, 2024: SPartAcous: a new interacting dark sector model faces cosmological tensions
  • Junichiro Kawamura (IBS Korea)

    2:00pm Feb 15, 2024: Finite modular symmetry for flavor hierarchies and strong CP

  
  

• 2023

  
  

  • Zara Bagdasarian (UC Berkeley)

    11:00am Dec 8, 2023: Solar neutrinos overview and advances towards Theia multipurpose neutrino detector
  • Yen-Hsun Lin (Academia Sinica)

    11:00am Oct 18, 2023: Signatures of afterglows from light dark matter boosted by supernova neutrinos in large underground detectors
  • Tracy Slatyer (MIT)

    2:00pm Sep 14, 2023: Dark Matter, Cosmic Background Radiation, and the Birth of the First Stars
  • Joachim Brod (U. Cincinnati)

    10:00am Aug 30, 2023: Two new precision observables in kaon physics
  • John Gargalionis (IFIC, Valencia)

    2:00pm Aug 25, 2023: Proton decay in low-scale Pati–Salam models
  • Robert Mostoghiu (Swinburne)

    3:30pm Aug 2, 2023: Cosmological simulations and the search for dark matter
  • Venus Keus (DIAS)

    2:00pm Jul 28, 2023: CP-violation in the dark sector
  • Ben Allanach (Cambridge)

    2:00pm Jul 24, 2023: Floccinaucinihilipilification
  • Claudia Hagedorn (IFIC, Valencia)

    2:00pm July 14, 2023: Phenomenology of low-scale seesaw with flavour and CP symmetries
  • Rick S. Gupta (Tata Institute)

    3:30pm 24 May, 2023: Cosmological selection of the weak scale
  • Ellen Sirks (U. Sydney)

    3:30pm May 3, 2023: Galaxy clusters: giant dark matter particle colliders
  • Natalia Tapia (Utah U.)

    10:00am Apr 12, 2023: Searching for new gamma ray signals from cosmic ray scattering on axionlike particles
  • Dipan Sengupta (U. Adelaide)

    3:30pm Mar 29, 2023: Unitarizing scattering amplitudes in theories of compact Extra Dimensions
  • Cristina Mondino (Perimeter Institute)

    10:00am Mar 15, 2023: Dark photon superradiance: Electrodynamics and multimessenger signals
  • Stefano Profumo (UC Santa Cruz)

    10:00am Mar 1, 2023: The Primordial Black Holes Variations
  • Marta Losada (NYU Abu Dhabi)

    11:00am Feb 24, 2023: Higgs physics, EDMs and Baryogenesis

  
  

• 2022

  
  

  • Michael Klasen (U. Münster)

    11:00am Dec 22, 2022: Supersymmetric dark matter after Fermilab's (g-2)_μ measurement
  • Flip Tanedo (UC Riverside)

    10:00am Oct 26, 2022: Adventures in a Warped Dark Sector
  • Kimberly Boddy (U. Texas)

    10:00am Oct 12, 2022: Searching for Dark Matter Interactions in Cosmology
  • Matthew McCullough (CERN)

    4:00pm 28 Sep, 2022: The Higgs Boson Under a Microscope
  • Seyda Ipek (Carleton)

    10:00am Sep 14, 2022: QCD and Baryogenesis
  • Filippo Sala (LPTHE)

    4:00pm Aug 31, 2022: Heavy Dark Matter from Phase Transitions
  • Graham White (IPMU)

    3:30pm July 6, 2022: Archaeology on the origin of matter
  • Kyohei Mukaida (KEK)

    3:30pm May 11, 2022: Leptoflavorgenesis
  • Kohei Kamada (RESCEU, U. Tokyo)

    3:30pm Apr 27, 2022: Magnetogenesis, Baryogenesis, and Wash-in Leptogenesis in Pseudoscalar Inflation
  • Michael Nee (Oxford)

    2:00pm Apr 26, 2022: The Boring Monopole
  • Vera Gluscevic (UCLA)

    10:00am Apr 13, 2022: Probing dark matter mass and interactions: from the early universe to near-field cosmology
  • Benjamin Roberts (U. of Queensland)

    3:30pm Mar 30, 2022: Dark matter induced atomic ionisation
  • Alexander Millar (Stockholm)

    2:00pm Feb 25, 2022: Axion-photon conversion in neutron star magnetospheres

  
  

• 2021

  
  

  • Ciaran O'Hare (Sydney)

    4:00pm Oct 27, 2021: Venturing into the neutrino fog
  • Volodymyr Takhistov (IPMU)

    4:00pm Oct 13, 2021: Exploring Depths of the Dark: Neutrinos, Axion Explosions and Multiverse Black Holes
  • Zahra Tabrizi (Virginia Tech)

    10:00am Sep 29, 2021: EFT Constraints from Neutrino Experiments
  • George Zahariade (IFAE)

    4:00pm Sep 15, 2021: Quantum Mechanics of Gravitational Waves
  • Nicholas Rodd (UC Berkeley)

    3:30pm Sep 1, 2021: New ideas for the axion dark matter program
  • Hank Lamm (Fermilab)

    11:00am June 9, 2021: The Long Story Short: Quantum Simulations for High Energy Physics
  • Rupert Coy (ULB)

    3:30pm May 26, 2021: The domain of thermal dark matter candidates
  • Kai Schmitz (CERN)

    4:00pm May 12, 2021: NANOGrav and Cosmic Strings from Cosmological B-L Breaking
  • Konstantin Springmann (TUM)

    4:00pm April 21, 2021: Axions in dense objects
  • Joshua Eby (Kavli IPMU)

    3:30pm March 17, 2021: Axion Stars: Towards the Planck Scale
  • Tongyan Lin (UCSD)

    11am March 3, 2021: Dark matter scattering in dielectrics

  
  

• 2020

  
  

  • Ariel Rock (Wisconsin–Madison)

    1.15pm December 9, 2020: Unconventional Taste: Flavor via Unexpected Origins
  • Clara Hormigos-Feliu (TU Dortmund)

    5pm November 25, 2020: Asymptotically safe models with Higgs and flavor portals

  
  

Organisers:
Stephan Meighen-Berger (stephan.meighenberger@unimelb.edu.au)
Jayden Newstead (jayden.newstead@unimelb.edu.au)