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Title: Search for Higgs Bosons in SUSY cascade decays and neutralino dark matter.

Abstract

The minimal supersymmetric extension of the standard model (MSSM) is a well-motivated theoretical framework, which contains an extended Higgs sector, including a light Higgs with standard model-like properties in most of the parameter space. Because of the large QCD background, searches for such a Higgs, decaying into a pair of bottom quarks, are very challenging at the LHC. It has been long realized that the situation may be ameliorated by searching for Higgs bosons in supersymmetric decay chains. Moreover, it has been recently suggested that the b{bar b} decay channel may be observed in standard production channels by selecting boosted Higgs bosons, which may be easily identified from the QCD background. Such boosted Higgs bosons are frequent in the MSSM, since they are produced from decays of heavy colored supersymmetric particles. Previous works have emphasized the possibility of observing boosted Higgs bosons in the light Higgsino region. In this work, we study the same question in the regions of parameter space consistent with a neutralino dark matter relic density, analyzing its dependence on the nonstandard Higgs boson, slepton, and squark masses, as well as on the condition of gaugino mass unification. In general, we conclude that, provided sleptons are heaviermore » than the second lightest neutralinos, the presence of boosted Higgs is a common MSSM feature, implying excellent prospects for observation of the light MSSM Higgs boson in the near future.« less

Authors:
; ;  [1];  [2];  [2];  [2]
  1. (High Energy Physics)
  2. (
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1018905
Report Number(s):
ANL-HEP-PR-11-17
Journal ID: 1550-7998; TRN: US1103492
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Phys. Rev. D
Additional Journal Information:
Journal Volume: 83; Journal Issue: 11 ; Jun. 24, 2011
Country of Publication:
United States
Language:
ENGLISH
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CHAINS; DECAY; HIGGS BOSONS; NONLUMINOUS MATTER; PRODUCTION; QUANTUM CHROMODYNAMICS; QUARKS; SPARTICLES; STANDARD MODEL

Citation Formats

Gori, S., Schwaller, P., Wagner, C. E. M., Univ. of Chicago), Northwestern Univ.), and Univ. of Illinois at Chicago). Search for Higgs Bosons in SUSY cascade decays and neutralino dark matter.. United States: N. p., 2011. Web. doi:10.1103/PhysRevD.83.115022.
Gori, S., Schwaller, P., Wagner, C. E. M., Univ. of Chicago), Northwestern Univ.), & Univ. of Illinois at Chicago). Search for Higgs Bosons in SUSY cascade decays and neutralino dark matter.. United States. doi:10.1103/PhysRevD.83.115022.
Gori, S., Schwaller, P., Wagner, C. E. M., Univ. of Chicago), Northwestern Univ.), and Univ. of Illinois at Chicago). Fri . "Search for Higgs Bosons in SUSY cascade decays and neutralino dark matter.". United States. doi:10.1103/PhysRevD.83.115022.
@article{osti_1018905,
title = {Search for Higgs Bosons in SUSY cascade decays and neutralino dark matter.},
author = {Gori, S. and Schwaller, P. and Wagner, C. E. M. and Univ. of Chicago) and Northwestern Univ.) and Univ. of Illinois at Chicago)},
abstractNote = {The minimal supersymmetric extension of the standard model (MSSM) is a well-motivated theoretical framework, which contains an extended Higgs sector, including a light Higgs with standard model-like properties in most of the parameter space. Because of the large QCD background, searches for such a Higgs, decaying into a pair of bottom quarks, are very challenging at the LHC. It has been long realized that the situation may be ameliorated by searching for Higgs bosons in supersymmetric decay chains. Moreover, it has been recently suggested that the b{bar b} decay channel may be observed in standard production channels by selecting boosted Higgs bosons, which may be easily identified from the QCD background. Such boosted Higgs bosons are frequent in the MSSM, since they are produced from decays of heavy colored supersymmetric particles. Previous works have emphasized the possibility of observing boosted Higgs bosons in the light Higgsino region. In this work, we study the same question in the regions of parameter space consistent with a neutralino dark matter relic density, analyzing its dependence on the nonstandard Higgs boson, slepton, and squark masses, as well as on the condition of gaugino mass unification. In general, we conclude that, provided sleptons are heavier than the second lightest neutralinos, the presence of boosted Higgs is a common MSSM feature, implying excellent prospects for observation of the light MSSM Higgs boson in the near future.},
doi = {10.1103/PhysRevD.83.115022},
journal = {Phys. Rev. D},
number = 11 ; Jun. 24, 2011,
volume = 83,
place = {United States},
year = {2011},
month = {6}
}