Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-11-24
JHEP 1101:028,2011
Physics
High Energy Physics
High Energy Physics - Phenomenology
14 pages, 4 figures and 3 tables, minor modifications made and accepted for publication in JHEP
Scientific paper
10.1007/JHEP01(2011)028
We investigate the collider phenomenology of gluino-bino co-annihilation scenario both at the Tevatron and 7 TeV LHC. This scenario can be realized, for example, in a class of realistic supersymmetric models with non-universal gaugino masses and t-b-\tau Yukawa unification. The NLSP gluino and LSP bino should be nearly degenerate in mass, so that the typical gluino search channels involving leptons or hard jets are not available. Consequently, the gluino can be lighter than various bounds on its mass from direct searches. We propose a new search for NLSP gluino involving multi-b final states, arising from the three-body decay \tilde{g}-> b\bar{b}\tilde{\chi}_1^0. We identify two realistic models with gluino mass of around 300 GeV for which the three-body decay is dominant, and show that a 4.5 \sigma observation sensitivity can be achieved at the Tevatron with an integrated luminosity of 10 fb^{-1}. For the 7 TeV LHC with 50 pb^{-1} of integrated luminosity, the number of signal events for the two models is O(10), to be compared with negligible SM background event.
Ajaib Muhammad Adeel
Li Tong
Shafi Qaisar
Wang Kai
No associations
LandOfFree
NLSP Gluino Search at the Tevatron and early LHC does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with NLSP Gluino Search at the Tevatron and early LHC, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and NLSP Gluino Search at the Tevatron and early LHC will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-586422