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Probing the light neutral Higgs boson scenario of the CP- violating MSSM Higgs sector at the LHC

Probing the light neutral Higgs boson scenario of the CP- violating MSSM Higgs sector at the LHC
Probing the light neutral Higgs boson scenario of the CP- violating MSSM Higgs sector at the LHC
In the CP-violating minimal supersymmetric standard model (MSSM), for certain values of the CP-violating phases associated to the universal trilinear couplings (At,Ab) and the gluino mass (M˜g), e.g., ?CP = 60? or 90?, for MH+ <? 140 GeV and tan ? ? 2–5, the lightest Higgs boson mass (MH1) is <? 50 GeV. This mass interval is still allowed by results of standard LEP Higgs searches because of a strongly suppressed H1ZZ coupling. However, in the same region of parameter space in which these two conditions occur, the H1H?W± coupling is enhanced because the two mentioned sets of couplings satisfy a sum rule. In this paper we probe such a light Higgs scenario at the Large Hadron Collider (LHC) by studying H±H1 associate production, leading to a 4b+± +E/T signal. We show that the latter is readily accessible at the CERN hadron collider, upon the application of suitable selection cuts against the standard model (SM) backgrounds. Our parton level Monte Carlo (MC) analysis yields ? 15–45 signal events, completely free of SM background, for L = 10–30 fb?1 of accumulated luminosity, after taking into account the overall efficiency for tagging four b-jets.
1434-6044
341-347
Ghosh, D.K.
f54a6c18-fd03-47cb-b8c8-1fc715779799
Moretti, S.
b57cf0f0-4bc3-4e02-96e3-071255366614
Ghosh, D.K.
f54a6c18-fd03-47cb-b8c8-1fc715779799
Moretti, S.
b57cf0f0-4bc3-4e02-96e3-071255366614

Ghosh, D.K. and Moretti, S. (2005) Probing the light neutral Higgs boson scenario of the CP- violating MSSM Higgs sector at the LHC. The European Physical Journal C, 42 (3), 341-347. (doi:10.1140/epjc/s2005-02294-9).

Record type: Article

Abstract

In the CP-violating minimal supersymmetric standard model (MSSM), for certain values of the CP-violating phases associated to the universal trilinear couplings (At,Ab) and the gluino mass (M˜g), e.g., ?CP = 60? or 90?, for MH+ <? 140 GeV and tan ? ? 2–5, the lightest Higgs boson mass (MH1) is <? 50 GeV. This mass interval is still allowed by results of standard LEP Higgs searches because of a strongly suppressed H1ZZ coupling. However, in the same region of parameter space in which these two conditions occur, the H1H?W± coupling is enhanced because the two mentioned sets of couplings satisfy a sum rule. In this paper we probe such a light Higgs scenario at the Large Hadron Collider (LHC) by studying H±H1 associate production, leading to a 4b+± +E/T signal. We show that the latter is readily accessible at the CERN hadron collider, upon the application of suitable selection cuts against the standard model (SM) backgrounds. Our parton level Monte Carlo (MC) analysis yields ? 15–45 signal events, completely free of SM background, for L = 10–30 fb?1 of accumulated luminosity, after taking into account the overall efficiency for tagging four b-jets.

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Published date: August 2005

Identifiers

Local EPrints ID: 57271
URI: http://eprints.soton.ac.uk/id/eprint/57271
ISSN: 1434-6044
PURE UUID: b8a0da97-2403-4e42-8693-2861814f9827

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Date deposited: 14 Aug 2008
Last modified: 13 Mar 2019 20:34

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