Right sneutrinos and signals of a stable stop at the CERN Large Hadron Collider

Choudhury, Debajyoti ; Gupta, Sudhir Kumar ; Mukhopadhyaya, Biswarup (2008) Right sneutrinos and signals of a stable stop at the CERN Large Hadron Collider Physical Review D - Particles, Fields, Gravitation and Cosmology, 78 (1). 015023_1-015023_13. ISSN 1550-7998

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Official URL: http://prd.aps.org/abstract/PRD/v78/i1/e015023

Related URL: http://dx.doi.org/10.1103/PhysRevD.78.015023

Abstract

We investigate charged tracks signals of a supersymmetric scenario, where the lighter stop is the next-to-lightest supersymmetric particle. It is found that such a next-to-lightest supersymmetric particle is stable on the scale of the detector at the CERN LHC if one has a right-chiral sneutrino as the lightest supersymmetric particle. After identifying some benchmark points in the parameter space of a supergravity scenario with nonuniversal 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 an integrated luminosity of even 1 fb−1 is likely to yield copious events of the first kind, while a larger luminosity may be required for the other type. One can also aspire to reconstruct the gluino mass, using the "visible" stable next-to-lightest supersymmetric particle tracks.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
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Deposited On:20 Sep 2011 09:52
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