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Title: MSSM Higgs Boson searches at the Tevatron and the LHC : impact of different benchmarks scenarios.

Abstract

No abstract prepared.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
923245
Report Number(s):
ANL-HEP-PR-05-109
TRN: US0801793
DOE Contract Number:
DE-AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Eur. J. Phys. C; Journal Volume: 45; Journal Issue: Jan. 2006
Country of Publication:
United States
Language:
ENGLISH
Subject:
43 PARTICLE ACCELERATORS; BENCHMARKS; FERMILAB TEVATRON; HIGGS BOSONS

Citation Formats

Carena, M., Heinemeyer, S., Wagner, C. E. M., Weiglein, G., High Energy Physics, FNAL, CERN, and Univ. of Chicago. MSSM Higgs Boson searches at the Tevatron and the LHC : impact of different benchmarks scenarios.. United States: N. p., 2006. Web. doi:10.1140/epjc/s2005-02470-y.
Carena, M., Heinemeyer, S., Wagner, C. E. M., Weiglein, G., High Energy Physics, FNAL, CERN, & Univ. of Chicago. MSSM Higgs Boson searches at the Tevatron and the LHC : impact of different benchmarks scenarios.. United States. doi:10.1140/epjc/s2005-02470-y.
Carena, M., Heinemeyer, S., Wagner, C. E. M., Weiglein, G., High Energy Physics, FNAL, CERN, and Univ. of Chicago. Sun . "MSSM Higgs Boson searches at the Tevatron and the LHC : impact of different benchmarks scenarios.". United States. doi:10.1140/epjc/s2005-02470-y.
@article{osti_923245,
title = {MSSM Higgs Boson searches at the Tevatron and the LHC : impact of different benchmarks scenarios.},
author = {Carena, M. and Heinemeyer, S. and Wagner, C. E. M. and Weiglein, G. and High Energy Physics and FNAL and CERN and Univ. of Chicago},
abstractNote = {No abstract prepared.},
doi = {10.1140/epjc/s2005-02470-y},
journal = {Eur. J. Phys. C},
number = Jan. 2006,
volume = 45,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
}
  • The Higgs boson search has shifted from LEP2 to the Tevatron and will subsequently move to the LHC. The current limits from the Tevatron and the prospective sensitivities at the LHC are often interpreted in specific MSSM scenarios. For heavy Higgs boson production and subsequent decay into b{bar b} or {tau}{sup +}{tau}{sup -}, the present Tevatron data allow to set limits in the M{sub A}-tan {beta} plane for small M{sub A} and large tan {beta} values. Similar channels have been explored for the LHC, where the discovery reach extends to higher values of M{sub A} and smaller tan {beta}. Searchesmore » for MSSM charged Higgs bosons, produced in top decays or in association with top quarks, have also been investigated at the Tevatron and the LHC. We analyze the current Tevatron limits and prospective LHC sensitivities. We discuss how robust they are with respect to variations of the other MSSM parameters and possible improvements of the theoretical predictions for Higgs boson production and decay. It is shown that the inclusion of supersymmetric radiative corrections to the production cross sections and decay widths leads to important modifications of the present limits on the MSSM parameter space. The impact on the region where only the lightest MSSM Higgs boson can be detected at the LHC is also analyzed. We propose to extend the existing benchmark scenarios by including additional values of the higgsino mass parameter {mu}. This affects only slightly the search channels for a SM-like Higgs boson, while having a major impact on the searches for non-standard MSSM Higgs bosons.« less
  • A Higgs-like particle with a mass of about 125.5 GeV has been discovered at the LHC. Within the current experimental uncertainties, this new state is compatible with both the predictions for the Standard Model (SM) Higgs boson and with the Higgs sector in the Minimal Supersymmetric Standard Model (MSSM). We propose new low-energy MSSM benchmark scenarios that, over a wide parameter range, are compatible with the mass and production rates of the observed signal. These scenarios also exhibit interesting phenomenology for the MSSM Higgs sector. We propose a slightly updated version of the well-known mh-max scenario, and a modified scenariomore » (mh-mod), where the light CP-even Higgs boson can be interpreted as the LHC signal in large parts of the MA-tan \beta\ plane. Furthermore, we define a light stop scenario that leads to a suppression of the lightest CP-even Higgs gluon fusion rate, and a light stau scenario with an enhanced decay rate of h to \gamma\gamma\ at large tan \beta. We also suggest a \tau-phobic Higgs scenario in which the lightest Higgs can have suppressed couplings to down-type fermions. We propose to supplement the specified value of the \mu\ parameter in some of these scenarios with additional values of both signs. This has a significant impact on the interpretation of searches for the non SM-like MSSM Higgs bosons. We also discuss the sensitivity of the searches to heavy Higgs decays into light charginos and neutralinos, and to decays of the form H to hh. Finally, in addition to all the other scenarios where the lightest CP-even Higgs is interpreted as the LHC signal, we propose a low-MH scenario, where instead the heavy CP-even Higgs boson corresponds to the new state around 125.5 GeV.« less
  • We analyze the Tevatron and Large Hadron Collider (LHC) reach for the Higgs sector of the minimal supersymmetric standard model (MSSM) in the presence of explicit CP violation. Using the most recent studies from the Tevatron and LHC collaborations, we examine the CPX benchmark scenario for a range of CP-violating phases in the soft trilinear and gluino mass terms and compute the exclusion/discovery potentials for each collider on the (M{sub H}{sup +},tan{beta}) plane. Projected results from standard model (SM)-like, nonstandard, and charged Higgs searches are combined to maximize the statistical significance. We exhibit complementarity between the SM-like Higgs searches atmore » the LHC with low luminosity and the Tevatron, and estimate the combined reach of the two colliders in the early phase of LHC running.« less
  • We analyze the Tevatron and Large Hadron Collider (LHC) reach for the Higgs sector of the minimal supersymmetric standard model (MSSM) in the presence of explicit CP violation. Using the most recent studies from the Tevatron and LHC collaborations, we examine the CPX benchmark scenario for a range of CP-violating phases in the soft trilinear and gluino mass terms and compute the exclusion/discovery potentials for each collider on the (MH+,tan{beta}) plane. Projected results from standard model (SM)-like, nonstandard, and charged Higgs searches are combined to maximize the statistical significance. We exhibit complementarity between the SM-like Higgs searches at the LHCmore » with low luminosity and the Tevatron, and estimate the combined reach of the two colliders in the early phase of LHC running.« less