Light stau phenomenology and the Higgs γγ rate

被引：158

作者：

Carena, Marcela ^{[1
,2
]}

Gori, Stefania ^{[1
,3
]}

Shah, Nausheen R. ^{[2
]}

Wagner, Carlos E. M. ^{[1
,3
,4
]}

Wang, Lian-Tao ^{[1
,4
]}

机构：

[1] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[2] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA

[3] Argonne Natl Lab, HEP Div, Argonne, IL 60439 USA

[4] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2012年 / 07期

基金：

美国国家科学基金会;

关键词：

Higgs Physics; Beyond Standard Model; Supersymmetric Standard Model; ELECTROWEAK SYMMETRY-BREAKING; STANDARD MODEL; PP COLLISIONS; COMPUTATIONAL TOOL; BOSON PRODUCTION; ROOT-S=7 TEV; MASS; SEARCH; SUPERSYMMETRY; MSSM;

D O I：

10.1007/JHEP07(2012)175

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：

Recently, an excess of events consistent with a Higgs boson with mass of about 125 GeV was reported by the CMS and ATLAS experiments. This Higgs boson mass is consistent with the values that may be obtained in minimal supersymmetric extensions of the Standard Model (SM), with both stop masses less than a TeV and large mixing. The apparently enhanced photon production rate associated with this potential Higgs signal may be the result of light staus with large mixing. Large stau mixing and large coupling of the staus to the SM-like Higgs boson may be obtained for large values of tan beta and moderate to large values of the Higgsino mass parameter, mu. We study the phenomenological properties of this scenario, including precision electroweak data, the muon anomalous magnetic moment, Dark Matter, and the evolution of the soft supersymmetry-breaking parameters to high energies. We also analyze the possible collider signatures of light third generation sleptons and demonstrate that it is possible to find evidence of their production at the 8 TeV and the 14 TeV LHC. The most promising channel is stau and tau sneutrino associated production, with the sneutrino decaying into a W boson plus a light stau.

引用

页数：32

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