並列タイトル等Search for long-lived supersymmetry particle by signature of a high track-multiplicity displaced vertex using the LHC-ATLAS Experiment
一般注記Long-lived supersymmetry (SUSY) particles decaying within the tracking volume in the LHC-ATLAS detector can be reconstructed as a displaced vertex by fitting a vertex from the tracks, arising from the charged daughter particles. A search for such a signature has been conducted using s=8 TeV data collected during 2012 at an integrated luminosity of 20.3 fb-1. In the absence of any signal of new physics, limits on the production cross-sections are set. Interpreted in the context of R-Parity violating (RPV) SUSY, where the lightest SUSY particle decay to purely standard model particles through various RPV couplings. The excluded upper limits cross-section varies depending on lifetime of the long-lived particles and the targeted coupling, with a value of 0.3 fb in the best case scenario. A model-independent limit on the cross-section is set at 0.14 fb including all uncertainties, yielding an significant improvement from previous the result of 5.4 fb.
identifier:oai:t2r2.star.titech.ac.jp:50295577
一次資料へのリンクURLhttp://t2r2.star.titech.ac.jp/rrws/file/CTT100698908/ATD100000413/PhDThesis_PetterssonNora.pdf (fulltext)
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース(IRDB)(機関リポジトリ)