The 2024 Chengdu Symposium on Particle Physics and Cosmology: Phase Transitions, Dark Matter and Experimental Probes (CPCS 2024)

Session

Baryogenesis

30 Sept 2024, 14:20

47. Baryogenesis via QCD preheating with nonadiabatic baryon chemical potential

Xin-Ru Wang (Jilin University)

30/09/2024, 14:20

The chiral phase transition in QCD can be supercooled in the thermal history of the universe to be instantaneously out-of equilibrium, if QCD is coupled to a dark QCD sector exhibiting the dark chiral phase transition of the first order. In that case the QCD sigma meson field (as the chiral order parameter, or the light quark condensate) starts to roll in a nonadiabatic way down to the true...

60. Nonperturbative study of the electroweak phase transition in the real scalar singlet extended Standard Model

GUO TAO XIA

30/09/2024, 14:40

In this talk, we explore the electroweak phase transition in the real singlet scalar extension of the Standard Model through a nonperturbative lattice study. We examine both heavy and light singlet-like scalar scenarios, focusing on non-zero singlet-doublet mixing angles.

The presentation begins with an overview of the lattice methods relevant to phase transition analysis. We then analyze...

61. Phase transitions, anomalous baryon number violation and electroweak multiplet dark matter

Yanda Wu

30/09/2024, 15:00

Our study presents a comprehensive analysis of baryon number violation during the electroweak phase transition (EWPT) within the framework of an extended scalar electroweak multiplet. We perform a topological classification of scalar multiplet's representation during the EWPT, identifying conditions under which monopole or sphaleron field solutions emerge, contingent upon whether their...