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

被引：7
|
作者：
Kitano, Ryuichiro [1 ]
机构：
[1] Los Alamos Natl Lab, Theoret Div T 8, Los Alamos, NM 87545 USA
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2008年 / 11期
关键词：
Supersymmetric Standard Model; Supersymmetry Phenomenology;
D O I：
10.1088/1126-6708/2008/11/045
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
The differential cross section of the chargino-neutralino production, q (q) over bar -> (XX0)-X-+/-, followed by their decays into scalar tau leptons, (XX0)-X-+/- -> ((tau) over tilde (+/-)nu) ((tau) over tilde (-/+)tau(+/-)) -> ((tau) over tilde (+/-)nu) ((tau) over tilde (-/+)ll(+/-)nu(nu) over bar), is calculated including the effect of spin correlations. In the case where (tau) over tilde 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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页数：30
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