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Title: Light Stops, Light Staus and the 125 GeV Higgs

Abstract

The ATLAS and CMS experiments have recently announced the discovery of a Higgs-like resonance with mass close to 125 GeV. Overall, the data is consistent with a Standard Model (SM)-like Higgs boson. Such a particle may arise in the minimal supersymmetric extension of the SM with average stop masses of the order of the TeV scale and a sizable stop mixing parameter. In this article we discuss properties of the SM-like Higgs production and decay rates induced by the possible presence of light staus and light stops. Light staus can affect the decay rate of the Higgs into di-photons and, in the case of sizable left-right mixing, induce an enhancement in this production channel up to $$\sim$$ 50% of the Standard Model rate. Light stops may induce sizable modifications of the Higgs gluon fusion production rate and correlated modifications to the Higgs diphoton decay. Departures from SM values of the bottom-quark and tau-lepton couplings to the Higgs can be obtained due to Higgs mixing effects triggered by light third generation scalar superpartners. We describe the phenomenological implications of light staus on searches for light stops and non-standard Higgs bosons. Finally, we discuss the current status of the search for light staus produced in association with sneutrinos, in final states containing a $W$ gauge boson and a pair of $$\tau$$s.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1155837
Report Number(s):
MCTP-13-07; FERMILAB-PUB-13-065-T
Journal ID: ISSN 1029-8479; arXiv eprint number arXiv:1303.4414
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Volume: 2013; Journal Issue: 8; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Carena, Marcela, Gori, Stefania, Shah, Nausheen R., Wagner, Carlos E.M., and Wang, Lian-Tao. Light Stops, Light Staus and the 125 GeV Higgs. United States: N. p., 2013. Web. doi:10.1007/JHEP08(2013)087.
Carena, Marcela, Gori, Stefania, Shah, Nausheen R., Wagner, Carlos E.M., & Wang, Lian-Tao. Light Stops, Light Staus and the 125 GeV Higgs. United States. doi:10.1007/JHEP08(2013)087.
Carena, Marcela, Gori, Stefania, Shah, Nausheen R., Wagner, Carlos E.M., and Wang, Lian-Tao. Thu . "Light Stops, Light Staus and the 125 GeV Higgs". United States. doi:10.1007/JHEP08(2013)087. https://www.osti.gov/servlets/purl/1155837.
@article{osti_1155837,
title = {Light Stops, Light Staus and the 125 GeV Higgs},
author = {Carena, Marcela and Gori, Stefania and Shah, Nausheen R. and Wagner, Carlos E.M. and Wang, Lian-Tao},
abstractNote = {The ATLAS and CMS experiments have recently announced the discovery of a Higgs-like resonance with mass close to 125 GeV. Overall, the data is consistent with a Standard Model (SM)-like Higgs boson. Such a particle may arise in the minimal supersymmetric extension of the SM with average stop masses of the order of the TeV scale and a sizable stop mixing parameter. In this article we discuss properties of the SM-like Higgs production and decay rates induced by the possible presence of light staus and light stops. Light staus can affect the decay rate of the Higgs into di-photons and, in the case of sizable left-right mixing, induce an enhancement in this production channel up to $\sim$ 50% of the Standard Model rate. Light stops may induce sizable modifications of the Higgs gluon fusion production rate and correlated modifications to the Higgs diphoton decay. Departures from SM values of the bottom-quark and tau-lepton couplings to the Higgs can be obtained due to Higgs mixing effects triggered by light third generation scalar superpartners. We describe the phenomenological implications of light staus on searches for light stops and non-standard Higgs bosons. Finally, we discuss the current status of the search for light staus produced in association with sneutrinos, in final states containing a $W$ gauge boson and a pair of $\tau$s.},
doi = {10.1007/JHEP08(2013)087},
journal = {Journal of High Energy Physics (Online)},
issn = {1029-8479},
number = 8,
volume = 2013,
place = {United States},
year = {2013},
month = {8}
}