Sixth Sydney meeting

Session

Talks

26 Jul 2023, 11:00

G59/G60 (Old Main Building)

4. What a flavour (and CP) symmetry can do for you

Claudia Hagedorn (IFIC)

26/07/2023, 11:00

Symmetries are a very important ingredient of the Standard Model of particle physics. In this talk, we discuss the role that symmetries can play in the flavour sector. We give different examples of possible symmetries and their phenomenological impact, e.g. the prediction of lepton mixing parameters, constraints on and correlation with the size and sign of the baryon asymmetry of the Universe...

8. On dual formulation of axion physics and the $\theta$-vacua

Otari Sakhelashvili (Sydney University)

26/07/2023, 12:00

7. Ultralight Dark Matter and g-2

Jason Evans (Shanghai Jiaotong University/TDLI)

26/07/2023, 14:00

If dark matter is ultralight, the number density of dark matter is very high and the techniques of zero-temperature field theory are no longer valid. The dark matter number density modifies the vacuum giving it a non-negligible particle occupation number. For fermionic dark matter, this occupation number can be no larger than one. However, in the case of bosons the occupation number is...

15. Miniclusters from axion string simulations

Giovanni Pierobon

26/07/2023, 15:00

The properties of axion miniclusters and of the ensuing voids between them can have very strong implications for the discovery of axions and the dark matter of the Universe. These properties can be strongly affected by the dynamics in the early Universe, such as the axion string network and the non-linear dynamics around the QCD phase transition. In this talk we briefly discuss the...

9. Galaxy clusters: giant dark matter particle colliders

Ellen Sirks (The University of Sydney)

26/07/2023, 16:00

Galaxy clusters are the largest gravitationally bound objects in the Universe. Because of their high density and high local velocity dispersion, they are ideal environments for probing the nature of dark matter. The specific properties of dark matter can have great effects on both clusters as a whole as well as on the galaxies residing in them. For example, if the self-interaction...

10. Probing the early universe with stochastic gravitational wave backgrounds

Ameek Malhotra

26/07/2023, 16:30

11. Searching for Features in the Primordial Power Spectrum

Julius Wons

26/07/2023, 17:00

5. Unitarizing scattering amplitudes in theories of compact Extra Dimensions

Dipan Sengupta (University of Adelaide)

27/07/2023, 11:00

Scattering amplitudes are paramount to understanding the validity of quantum field theories. In this talk I will discuss scattering amplitudes of massive spin-2 particles. I will contrast the unitarity violating scales of theories of massive gravity and compact extra dimensions. I will also demonstrate how scattering amplitudes in extra dimensions can be obtained via the double copy...

6. The Hyper-Kamiokande Experiment

Francesca Di Lodovico (University of London (GB))

27/07/2023, 14:00

Hyper-Kamiokande is a next-generation water Cherenkov detector in Japan whose construction started in early 2020 and is expected to complete in 2027.

The detector has a fiducial volume more than 8 times the size of the currently-running Super-Kamiokande detector for a total of about 188 kton fiducial volume. The full experiment includes an upgraded J-PARC neutrino beam, and a near detector...

17. The Belle II experiment

Chia-Ling Hsu (The University of Sydney)

27/07/2023, 15:50

14. Search for lepton flavour violation at Belle II with B0 -> tau ell

Ms Priyanka Cheema (University of Sydney)

27/07/2023, 16:20

16. Towards B to pi tau nu at Belle II with SL tagging

Andre Hao Yuan Huang

27/07/2023, 16:40

12. Connecting Inflation to Particle Physics with Next Generation CMB and LSS Observations

Marco Drewes

27/07/2023, 17:00

The CMB and the large scale structure of the universe provide powerful probes that constrain models of inflation. It is well-known that the relations between inflationary model parameters and observables depend on the duration of the reheating epoch, which also determines the reheating temperature. While current observations are not sensitive enough to extract any knowledge about these...