Light non-degenerate squarks at the LHC
Abstract
Experimental bounds on squarks of the first two generations assume their masses to be eightfold degenerate, and consequently constrain them to be heavier than ~ 1.4 TeV when the gluino is lighter than 2.5 TeV. The assumption of squark-mass universality is neither a direct consequence of Minimal Flavor Violation (MFV), which allows for splittings within squark generations, nor a prediction of supersymmetric alignment models, which allow for splittings between generations. We reinterpret a recent CMS multijet plus missing energy search allowing for deviations from U(2) universality, and show that the squark bounds are significantly weakened: a 400 GeV second-generation squark singlet is allowed, even with exclusive decays to a massless neutralino; and in an MFV scenario, the down-type squark singlets can be as light as 600 GeV provided the up-type singlets are pushed up to 1.8 TeV, for a 1.5 TeV gluino and decoupled doublet squarks.
Keywords
Cite
@article{arxiv.1212.3328,
title = {Light non-degenerate squarks at the LHC},
author = {Rakhi Mahbubani and Michele Papucci and Gilad Perez and Joshua T. Ruderman and Andreas Weiler},
journal= {arXiv preprint arXiv:1212.3328},
year = {2013}
}
Comments
5 pages, 4 figures