KSHEP 2024 Fall Meeting

Session

Poster

Not scheduled

대학본부(201동) 2층 대강당 (울산과학기술원(UNIST))

31. Background Study for the GE1/1 Detector in the CMS Experiment

우현 허 (서울시립대학교 물리학과)

Poster

As a part of the CMS muon system upgrade, the installation of the GE1/1 detectors has been completed in 2020. Because the GE 1/1 system is located in the forward region of the CMS endcap, we expect high background rates due to the heavy radiation environment. There are some additional components of the electronics-induced noise which can affect the background rate measurement. So, they must be...

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...

26. Exploring the DAMSA Experiment: Simulating The Case of a Portable Experiment

민석 오 (서울대학교)

Poster

We present the results of Geant4 simulations for the Portable DAMSA experiment. DAMSA is a novel experimental approach aimed at detecting dark-sector particles, such as axion-like particles (ALPs) and dark photons. DAMSA utilizes high-flux proton beams from PIP-II proton accelerator at fermilab, with the detector strategically positioned immediately downstream of the proton beam dump. However,...

25. GEM DPG Activities

이안 왓슨 (서울시립대학교)

Poster

The first station of GEM detectors, GE1/1, has been installed for run 3. The GEM DPG group has been studying the performance of the detectors, and we present several results including HV scan efficiency study, bending angles, flower events, and VFAT stability.

27. ME0 Segment Reconstruction using Deep Leaning

연주 김 (서울시립대학교)

Poster

The ME0 detector, based on Gas Electron Multiplier (GEM) technology, is a forthcoming component of the Compact Muon Solenoid (CMS) experiment at the Large Hadron Collider, designed to extend muon detection into the very-forward pseudorapidity region of 2.0 < |η| < 2.8. This region faces significant challenges due to high pileup rates, which complicate accurate muon reconstruction. This study...

30. Multi-wavelength Afterglow Analysis of GRB 221009A: Unveiling the Evolution of a Cooling Break in a Wind-like Medium

동근 탁 (서울대학교)

Poster

Gamma-ray bursts (GRBs) are the most energetic explosions in the universe, and their afterglow emission provides an opportunity to probe the physics of relativistic shock waves in an extreme environment. Several key pieces for completing the picture of the GRB afterglow physics are still missing, including jet properties, emission mechanism, and particle acceleration. Here we present a study...

28. Studies on the characterization and development of halide perovskite quantum dot liquid scintillator for next-generation neutrino detection

은민 김 (전남대학교 물리학과)

Poster

This study aims to develop and investigate the characteristics of a liquid scintillator solution using perovskite quantum dot structures. To date, there have been no specific examples of utilizing perovskite structures for particle detectors in high-energy or nuclear physics, making this research an exploration of a novel next-generation liquid scintillator solution. Currently, the synthesis...

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)

Poster

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...

29. The activities of the Korean group for Hyper-Kamiokande

준교 오 (전남대학교)

Poster

Hyper-Kamiokande (HK) is a next-generation water Cherenkov detector.
The effective volume of the detector will be approximately five times that of Super-Kamiokande. The physics goals of HK include measurements of the leptonic CP phase, searches for proton decay, and observations of atmospheric neutrinos as well as neutrinos from solar and supernova explosions. The experiment is set to begin...