New signatures and limits on R-parity violation from resonant squark production

作者：Monteux Angelo

来源：The Journal of High Energy Physics, 2016, 2016(3): 216.

DOI：10.1007/JHEP03(2016)216

• Supersymmetry Phenomenology

We discuss resonant squark production at the LHC via baryonic R-parity violating interactions. The cross section easily exceeds pair-production and a new set of signatures can be used to probe squarks, particularly stops. These include dijet resonances, same-sign top quarks and four-jet resonances with large b-jet multiplicities, as well as the possibility of displaced neutralino decays. We use publicly available searches at root s = 8 TeV and first results from collisions at root s = 13 TeV to set upper limits on R-parity violating couplings, with particular focus on simplified models with light stops and neutralinos. The exclusion reach of these signatures is comparable to R-parity-conserving searches, m((t) over tilde) similar or equal to 500-700 GeV. In addition, we find that 0(1) couplings involving the stop can be excluded well into the multi-TeV range, and stress that searches for single- and pair-produced four-jet resonances will be necessary to exclude sub-TeV stops for a natural SUSY spectrum with light higgsinos.

• 出版日期2016-3-31