Won Sang Cho

Learn More
We present a detailed study of the collider observable m T 2 applied for pair-produced superparticles decaying to visible particles and a pair of invisible lightest supersym-metric particles (LSPs). Analytic expressions of the maximum of m T 2 over all events (m max T 2) are derived. It is noticed that if the decay product of each superparticle involves(More)
We investigate the possibility to measure the top quark mass using the collider variable m T 2 at the LHC experiment. Monte Carlo studies of m T 2 are performed with the events corresponding to the dilepton decays of t ¯ t produced at the LHC with 10 f b −1 integrated luminosity. Our analysis suggests that the top quark mass can be determined by the m T 2(More)
We study LHC phenomenology of mirage mediation scenario in which anomaly and modulus contributions to soft SUSY breaking terms are comparable to each other. A Monte Carlo study of mirage mediation, with model parameters α = 1, M 0 = 500 GeV, n M = 1/2, n H = 1 and tanβ = 10, is presented. It is shown that masses of supersymmetric particles can be measured(More)
We discuss nonstandard interpretations of the 750 GeV diphoton excess recently reported by the ATLAS and CMS Collaborations which do not involve a new, relatively broad resonance with a mass near 750 GeV. Instead, we consider the sequential cascade decay of a much heavier, possibly quite narrow, resonance into two photons along with one or more additional(More)
  • 1