YongPyong 2012 Winter Conference on Particle Physics

Session

Parallel: E2

21 Feb 2012, 19:00

Greenpia at YongPyong

Conveners

Parallel: E2: Experimental & Computational

• Doris Y. Kim (Soongsil Univ.)

34. Invisible & semi-invisible decays from Belle

Prof. Youngjoon Kwon (Yonsei Univ.)

21/02/2012, 19:00

B meson decays to invisible final states. e.g. B → νν are very highly suppressed in the Standard Model (SM). Similarly, B decay to semi-invisible final states such as B → K*νν are highly suppressed. As a result, these decays can provide a good probe to search for new physics beyond the SM. Experimently, it is very difficult to search for these decays due to invisibility of the final state...

35. A rare B meson decay study of B-->lnu with hadronic tagging at Belle

Mr Youngmin Yook (Yonsei Univ.)

21/02/2012, 19:20

The branchig fraction of the rare B meson decay B->lnu are expected to be very small due to helicity suppression in the Standard Model. With the contributions from the new physics beyond the Standard Model, this may be avoided and the evidences of the process may be observed. With hadronic tagging method for a very clean experimental signature, this study is based on a set of data sample of...

36. A Study of B->l+ tau- with hadronic tagging method at Belle experiment

Mr Dooyong Jung (Yonsei U.)

21/02/2012, 19:45

We present the study of the leptonic B-meson decay, B → lτ from Belle experiment. This study is done by using MC sample which corresponds to an integrated luminosity of 711fb−1 , from which contains approximately 771 × 106 BB pair events. They are tagged by hadronic tagging method. We optimized all event variables cuts to obtain best result. We can get the result of Expected Branching Fraction...

37. A New Architecture for Saving and Analyzing the HEP Data

Dr Woojin Seok (KISTI)

21/02/2012, 20:30

It, the collider of the high energy physics area, produces the huge amount of data. The data then should be dispersed over the world in high speed and in high capacity, for the purpose of analyzing the data by the scientists in the world. So they built and organized Tier system, a global scale infrastructure for transferring the data in hierarchical manners over the world. The scientists have...

40. CP violation in the Bs --> J/psi (mu+ mu-) phi (K+ K-) decay using TTT data set and combined DIM and TTT datasets

Dr Youngjin Kim (KISTI)

21/02/2012, 20:50

I will show that Preliminary Results of Analysis of the CP violation in the Bs → J/ψ (μ+μ−) φ (K+K−) decay using TTT data set and combined DIM and TTT datasets. This is one of the powerful channel for the study of CP violation at hadron colliders is the process Bs → J/ψ (μ+μ−) φ (K+K−) with a clear kinematics and experimental signature. The CDF experiment has built the Hadronic Two Track (TTT)...

38. Bayesian Study of Ultra High Energy Cosmic Rays

Mr Wooram Cho (Yonsei U.)

21/02/2012, 21:10

At present, we don’t understand what can generate ultra high energy cosmic rays(UHECRs) exactly. Active galactic nuclei(AGN) can be regarded as one of the source of UHECRs. In this presentation, we use bayesian approach to detemine the fraction of UHECRs coming from AGNs. And 27 highest energy-events detected by Pierre Auger Observatory(PAO) with Veron Cetty Veron(VCV) catalogue are analysed.

39. Study of simulated coincident events for COREA prototype system

Mr Hongki Kim (Yonsei U.)

21/02/2012, 21:30

The COREA(COsmic ray Reaserch and Education Array) collaboration has installed a prototype array of plastic scintillation systems at Kyeonggibuk Science High School and Hansung Science High School to study cosmic ray events. In each site, three detector stations are installed, where each station cosists of four scintillation detectors. We report the progress of simulation study of plastic...