Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-04-22
Phys.Rev.D78:015023,2008
Physics
High Energy Physics
High Energy Physics - Phenomenology
24 pages, 18 eps figures, accepted for publication in Physical Review D (title changed in journal version)
Scientific paper
10.1103/PhysRevD.78.015023
We investigate charged tracks signals of a supersymmetric scenario, where the lighter stop is the next-to-lightest supersymmetric particle (NLSP). It is found that such an NLSP is stable on the scale of the detector at the LHC if one has a right-chiral sneutrino as the lightest supersymmetric particle (LSP). After identifying some benchmark points in the parameter space of a supergravity scenario with non-universal scalar masses, we study a few specific classes of signals, namely, stop pair production and gluino pair production followed by each decaying into a stop and a top. It is shown that proper kinematic cuts remove the backgrounds in each case, and, while a few months' worth of data is sufficient to have copious events in the first case, one may require 300 $fb^{-1}$ for the other. One can also aspire to reconstruct the gluino mass, using the `visible' stable NLSP tracks.
Choudhury Debajyoti
Gupta Sudhir Kumar
Mukhopadhyaya Biswarup
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