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Title: Complementarity between nonstandard Higgs boson searches and precision Higgs boson measurements in the MSSM

Abstract

Precision measurements of the Higgs boson properties at the LHC provide relevant constraints on possible weak-scale extensions of the Standard Model (SM). In the context of the minimal supersymmetric Standard Model (MSSM) these constraints seem to suggest that all the additional, non-SM-like Higgs bosons should be heavy, with masses larger than about 400 GeV. This article shows that such results do not hold when the theory approaches the conditions for “alignment independent of decoupling,” where the lightest CP -even Higgs boson has SM-like tree-level couplings to fermions and gauge bosons, independently of the nonstandard Higgs boson masses. The combination of current bounds from direct Higgs boson searches at the LHC, along with the alignment conditions, have a significant impact on the allowed MSSM parameter space yielding light additional Higgs bosons. In particular, after ensuring the correct mass for the lightest CP -even Higgs boson, we find that precision measurements and direct searches are complementary and may soon be able to probe the region of non-SM-like Higgs boson with masses below the top quark pair mass threshold of 350 GeV and low to moderate values of tanβ

Authors:
; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science - Office of High Energy Physics; National Science Foundation (NSF)
OSTI Identifier:
1391657
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles, Fields, Gravitation and Cosmology; Journal Volume: 91; Journal Issue: 3
Country of Publication:
United States
Language:
English

Citation Formats

Carena, Marcela, Haber, Howard E., Low, Ian, Shah, Nausheen R., and Wagner, Carlos E. M. Complementarity between nonstandard Higgs boson searches and precision Higgs boson measurements in the MSSM. United States: N. p., 2015. Web. doi:10.1103/PhysRevD.91.035003.
Carena, Marcela, Haber, Howard E., Low, Ian, Shah, Nausheen R., & Wagner, Carlos E. M. Complementarity between nonstandard Higgs boson searches and precision Higgs boson measurements in the MSSM. United States. doi:10.1103/PhysRevD.91.035003.
Carena, Marcela, Haber, Howard E., Low, Ian, Shah, Nausheen R., and Wagner, Carlos E. M. Sun . "Complementarity between nonstandard Higgs boson searches and precision Higgs boson measurements in the MSSM". United States. doi:10.1103/PhysRevD.91.035003.
@article{osti_1391657,
title = {Complementarity between nonstandard Higgs boson searches and precision Higgs boson measurements in the MSSM},
author = {Carena, Marcela and Haber, Howard E. and Low, Ian and Shah, Nausheen R. and Wagner, Carlos E. M.},
abstractNote = {Precision measurements of the Higgs boson properties at the LHC provide relevant constraints on possible weak-scale extensions of the Standard Model (SM). In the context of the minimal supersymmetric Standard Model (MSSM) these constraints seem to suggest that all the additional, non-SM-like Higgs bosons should be heavy, with masses larger than about 400 GeV. This article shows that such results do not hold when the theory approaches the conditions for “alignment independent of decoupling,” where the lightest CP -even Higgs boson has SM-like tree-level couplings to fermions and gauge bosons, independently of the nonstandard Higgs boson masses. The combination of current bounds from direct Higgs boson searches at the LHC, along with the alignment conditions, have a significant impact on the allowed MSSM parameter space yielding light additional Higgs bosons. In particular, after ensuring the correct mass for the lightest CP -even Higgs boson, we find that precision measurements and direct searches are complementary and may soon be able to probe the region of non-SM-like Higgs boson with masses below the top quark pair mass threshold of 350 GeV and low to moderate values of tanβ},
doi = {10.1103/PhysRevD.91.035003},
journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
number = 3,
volume = 91,
place = {United States},
year = {Sun Feb 01 00:00:00 EST 2015},
month = {Sun Feb 01 00:00:00 EST 2015}
}