Study of chargino-neutralino production at hadron colliders in a long-lived slepton scenario

Details Study of chargino-neutralino production at hadron colliders in a long-lived slepton scenario Study of chargino-neutralino production at hadron colliders in a long-lived slepton scenario

2008-06-06

arxiv.org/abs/0806.1057v2

JHEP0811:045,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

35 pages, 14 figures, 1 table, version to appear in JHEP

Scientific paper

10.1088/1126-6708/2008/11/045

The differential cross section of the chargino-neutralino production, q qbar --> chi+- chi0, followed by their decays into scalar tau leptons, chi+- chi0 --> (stau+- nu)(stau-+ tau+-) --> (stau+- nu)(stau-+ l+- nu nubar), is calculated including the effect of spin correlations. In the case where stau is long-lived, this final state can be fully reconstructed in a hadron-collider experiment up to a discrete two-fold ambiguity. Distributions of various kinematic variables can thus be observable and tell us about masses and spins of superparticles and also parity/CP violation in interactions by comparing with the cross-section formula. Observing non-trivial distributions derived in this paper will be a good test of supersymmetry.

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