Strong-interaction effects in stop pair production at e+e- colliders


Autoria(s): Drees, M.; Éboli, O. J P
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

27/05/2014

27/05/2014

01/12/1999

Resumo

We discuss perturbative and non-perturbative strong-interaction effects in the pair production of stop squarks (t̃1) at e+e- colliders. Events with an additional hard gluon allow to detect or exclude t̃1t̃*1 production even in scenarios with very small mass splitting between ti and an invisible lightest supersymmetric particle (LSP). Such events can also help to establish that t̃1 transforms as a triplet under SU(3)C. We also carefully study non-perturbative t̃1 fragmentation, which is currently not well understood: not only is the t̃1 fragmentation function not known very well, but also there are ambiguities in the algorithm employed to model fragmentation. We present numerical results both for CERN LEP-183 and for a proposed future e+e- collider operating at center-of-mass energy s1/2 = 500 GeV.

Formato

337-345

Identificador

http://dx.doi.org/10.1007/s100529900087

European Physical Journal C, v. 10, n. 2, p. 337-345, 1999.

1434-6044

http://hdl.handle.net/11449/65899

10.1007/s100529900087

WOS:000082906900015

2-s2.0-0039724744

Idioma(s)

eng

Relação

European Physical Journal C

Direitos

closedAccess

Tipo

info:eu-repo/semantics/article