KSHEP 2024 Fall Meeting

Session

Poster

Not scheduled

대학본부(201동) 2층 대강당 (울산과학기술원(UNIST))

23. Deep Learning Application to the Analysis of Rare Top Decay t→sW at the LHC

지원 허 (서울시립대학교)

Poster

The Cabibbo-Kobayashi-Maskawa (CKM) matrix describes the flavor-changing interactions of quarks. The matrix element |Vts| describes the coupling between the top and strange quark, but the decay of t→sW is not directly seen yet. A direct measurement of |Vts| can be performed by identifying the strange jets from top decays. However, the extremely low ratio of t→sW compared to the dominant t→bW,...

22. Dynamical Friction on Circular Orbit in Self-Interacting Ultra-Light Dark Matter and Fornax Globular Clusters

현모 구 (서울시립대학교)

Poster

Considering the self-interaction of bosonic scalar Ultra-Light Dark Matter (ULDM) relaxes the constraints on its particle mass, typically estimated to be around ~1e−22 eV. We calculate the dynamical friction (DF) coefficient for a steady-state circular orbit induced by the gravitational wake of ULDM using multipole expansion. In the strong self-coupling regime, the leading-order term for the...

24. Study for measuring |Vts| directly in dileptonic final state of top pair production at 13 TeV with the CMS detector

Dr 우진 장 (서울시립대학교)

Charged current weak interactions between quarks are governed by the CKM matrix. The matrix element Vts​ represents the coupling strength between top and strange quarks. The square of this element corresponds to the branching ratio of a top quark decaying into a strange quark and a W boson. This value can be inferred indirectly through measurements from B meson oscillations or obtained via a...