Detecting a Light Stop from Top Decays at the Tevatron

Details Detecting a Light Stop from Top Decays at the Tevatron Detecting a Light Stop from Top Decays at the Tevatron

1995-09-29

arxiv.org/abs/hep-ph/9509424v1

Phys.Lett. B367 (1996) 188-194

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages with 1 Postscript figure using psfig.sty. Postscript file available at http://sgi2.hep.anl.gov:8001/index.html

Scientific paper

10.1016/0370-2693(95)01431-4

We study the possibility of discovering or excluding a light top squark (stop) based on top quark decays in the t-tbar events produced at the Fermilab Tevatron. In particular, we consider the Minimal Supersymmetric Standard Model with the sparticle spectrum m_{chi^+_1}+m_b, M_W+m_{chi^0_1}+m_b > m_{stop} > m_{chi^0_1}+m_c, where chi^0_1 is the lightest neutralino and chi^+_1 is the lightest chargino, so that t -> stop chi^0_1 and stop -> c chi^0_1. All other sparticle masses are assumed to be heavier than m_t. Such a spectrum seeks to explain the experimental values of alpha_s(M_Z^2), R_b and A_{LR} obtained from LEP/SLC data. We find that the prospect to observe a light stop via this channel at the Tevatron is very promising.

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