Using Tau Polarization to Sharpen up the SUGRA Signal at Tevatron

Details Using Tau Polarization to Sharpen up the SUGRA Signal at Tevatron Using Tau Polarization to Sharpen up the SUGRA Signal at Tevatron

2001-09-11

arxiv.org/abs/hep-ph/0109096v2

Phys.Lett.B535:243-248,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, LateX, 2 figures, discussion on polarization effect added, final version to be published in PLB

Scientific paper

10.1016/S0370-2693(02)01755-0

The most promising source of SUGRA signal at the Tevatron collider is the pair-production of electroweak gauginos, followed by their leptonic decay. In the parameter range corresponding to dominant leptonic decay of these gauginos one or more of the leptons are expected to be $\tau$ with $P_\tau \simeq +1$. This polarization can be effectively used to distinguish the signal from the background in the 1-prong hadronic decay channel of $\tau$ by looking at the fractional $\tau$-jet momentum carried by the charged prong.

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