@article{oai:sucra.repo.nii.ac.jp:00013428, author = {Kaneko, Satoru and 佐藤, 丈 and Shimomura, Takashi and Vives, Oscar and Yamanaka, Masato}, issue = {11}, journal = {PHYSICAL REVIEW D}, month = {}, note = {http://link.aps.org/doi/10.1103/PhysRevD.78.116013 | http://link.aps.org/doi/10.1103/PhysRevD.78.116013, When the mass difference between the lightest slepton, the next to lightest supersymmetric particle, and the lightest neutralino, the lightest supersymmetric particle, is smaller than the tau mass, the lifetime of the lightest slepton increases in many orders of magnitude with respect to typical lifetimes of other supersymmetric particles. These small mass differences are possible in the minimal supersymmetric standard model (MSSM) and, for instance, they correspond to the coannihilation region of the constrained MSSM for M-1/2 greater than or similar to 700 GeV. In a general gravity-mediated MSSM, where the lightest supersymmetric particle is the neutralino, the lifetime of the lightest slepton is inversely proportional to the square of the inter-generational mixing in the slepton mass matrices. Such a long-lived slepton would produce a distinctive signature at LHC and a measurement of its lifetime would be relatively simple. Therefore, the long-lived slepton scenario offers an excellent opportunity to study lepton flavor violation at ATLAS and CMS detectors in the LHC and an improvement of the leptonic mass insertion bounds by more than 5 orders of magnitude would be possible., text, application/pdf}, pages = {116013-1--116013-12}, title = {Measuring lepton flavor violation at LHC with a long-lived slepton in the coannihilation region}, volume = {78}, year = {2008}, yomi = {サトウ, ジョウ} }