The 4th Asian-European-Institutes Workshop for BSM

Session

1010D

10 Oct 2024, 15:30

Tsung-Dao Lee Institute/N4F-N400 - meeting room (Tsung-Dao Lee Institute)

Conveners

1010D

• Xiao-Ping Wang (Beihang University)

3. Cosmic magnetic monopole search experiment SCEP

Beige Liu (中国科学技术大学)

10/10/2024, 15:30

Whether the magnetic monopole (MM) exists is a long-standing question in particle physics. It is postulated to be crucially related to the quantization of the electric charge. Under the framework of the Grand Unified Theory (GUT), a certain amount of MMs are produced during the splitting between strong and electroweak forces, which occurred very shortly after the big bang. Past efforts were...

29. Dark Matter Annihilation via Breit-Wigner Enhancement with Heavier Mediator

Jie Sheng (Shanghai Jiao Tong University, Tsung-Dao Lee Institute)

10/10/2024, 15:45

We propose a new scenario that both the dark matter freeze-out in the early Universe and its possible annihilation for indirect detection around a supermassive black hole are enhanced by a Breit-Wigner resonance. With the mediator mass larger than the total initial dark matter mass, this annihilation is almost forbidden at late times. Thus, the stringent cosmic microwave background and...

48. Relic Neutrinos with Cosmic Gravitational Focusing

Liang Tan

10/10/2024, 16:00

The cosmic gravitational focusing (CGF) of relic neutrinos can provide an independent measurement of the absolute neutrino masses with a dependence on the fourth power of mass. In addition, CGF can help determine neutrino mass ordering. I will show that our projected CGF at DESI has a comparable sensitivity to the existing clustering method. Combining the projected CGF and clustering method...

28. UV Completion of Neutral Triple Gauge Couplings

Shi-Ping Zeng

10/10/2024, 16:15

Neutral triple gauge couplings (nTGCs) are manifestation of new physics beyond the Standard Model (SM), as they are absent in the SM and are first generated by dimension-8 operators in the SM Effective Field Theory (SMEFT). We study the UV completion of nTGCs in a renormalizable model with vector-like heavy fermions. We compute the one-loop heavy fermion contributions to nTGC vertices by...