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

被引:14
作者
Arganda, Ernesto [1 ,2 ]
Martin-Lozano, Victor [3 ,4 ]
Medina, Anibal D. [1 ]
Mileo, Nicolas I. [1 ]
机构
[1] Univ Nacl La Plata, CONICET, IFLP, Dpto Fis, CC 67, RA-1900 La Plata, Buenos Aires, Argentina
[2] CSIC, UAM, Inst Fis Teor, Calle Nicolas Cabrera 13-15, E-28049 Madrid, Spain
[3] Univ Bonn, Bethe Ctr Theoret Phys, Nussallee 12, D-53115 Bonn, Germany
[4] Univ Bonn, Phys Inst, Nussallee 12, D-53115 Bonn, Germany
关键词
Supersymmetry Phenomenology; SUPERSYMMETRY; SEARCH; PROGRAM; SPHENO; FLAVOR; SUSHI;
D O I
10.1007/JHEP09(2018)056
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
In this work we present a new search strategy for the discovery of staus at the LHC in the context of the minimal supersymmetric standard model. The search profits from the large s-channel b-quark annihilation production of the heavy CP-even and CP-odd Higgs bosons (H / A) which can be attained in regions of tan beta >> 1 that avoid the stringent H/A -> tau(+)tau(-) searches via decays into stau pairs. We also focus on regions where the staus branching 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 plus large missing transverse energy. We take advantage of the large stau-pair production cross sections via heavy Higgs boson decays, which are between one or two orders of magnitude larger than the usual electroweak production cross sections for staus. A set of basic cuts allow us to obtain significances of the signal over the SM backgrounds at the discovery level (5 standard deviations) in the next LHC run with a center-of-mass energy of 14 TeV and a total integrated luminosity of only 100 fb(-1).
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页数:14
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