Flavour violating bosonic squark decays at LHC
Abstract
Quark flavour conserving (QFC) fermionic squark decays, such as ~t_{1,2} -> t neutralino_i, are usually assumed in squark search analyses. Here we study quark flavour violating (QFV) bosonic squark decays, such as ~u_2 -> ~u_1 h^0/Z^0, where the mass eigenstates ~u_{1,2} are mixtures of scharm and stop quarks. We show that the branching ratios of such QFV decays can be very large due to sizable ~c_R - ~t_{R/L} and ~t_R - ~t_L mixing effects despite the very strong constraints on the QFV parameters from B meson data. This can result in remarkable QFV signatures with significant rates at LHC (14 TeV), such as pp -> gluino gluino X -> t c bar{c} bar{c} h^0/Z^0 missing-E_T X and pp -> gluino gluino X -> t t bar{c} bar{c} h^0/Z^0 missing-E_T X. The QFV bosonic squark decays can play an important role in the squark and gluino searches at LHC (14 TeV).
Cite
@article{arxiv.1310.5974,
title = {Flavour violating bosonic squark decays at LHC},
author = {K. Hidaka and A. Bartl and H. Eberl and E. Ginina and B. Herrmann and W. Majerotto and W. Porod},
journal= {arXiv preprint arXiv:1310.5974},
year = {2013}
}
Comments
4 pages, Proceedings of The European Physical Society Conference on High Energy Physics (EPS-HEP 2013), Stockholm, Sweden, 18-24 July, 2013