Potential discovery of staus through heavy Higgs bosons decays at the LHC

ERNESTO ARGANDA; VICTOR MARTIN-LOZANO; ANIBAL D. MEDINA; NICOLAS I. MILEO

JOURNAL OF HIGH ENERGY PHYSICS

SPRINGER

Lugar: Berlin; Año: 2018

1126-6708

In this work we present a new search strategy for the discovery of staus at theLHC in the context of the minimal supersymmetric standard model. The search profitsfrom the large s-channel b-quark annihilation production of the heavy CP-even and CP-oddHiggs bosons (H/A) which can be attained in regions of tan β 1 that avoid the stringentH/A → τ+τ− searches via decays into stau pairs. We also focus on regions where the stausbranching ratios are dominated by the decays into a tau lepton and the lightest neutralino.Thus the experimental signature consists of final states made up of a tau-lepton pair pluslarge missing transverse energy. We take advantage of the large stau-pair production crosssections via heavy Higgs boson decays, which are between one or two orders of magnitudelarger than the usual electroweak production cross sections for staus. A set of basic cutsallow us to obtain significances of the signal over the SM backgrounds at the discoverylevel (5 standard deviations) in the next LHC run with a center-of-mass energy of 14 TeVand a total integrated luminosity of only 100 fb−1..