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Lepton flavour violating heavy Higgs decays within the ?MSSM and their detection at the LHC

Lepton flavour violating heavy Higgs decays within the ?MSSM and their detection at the LHC
Lepton flavour violating heavy Higgs decays within the ?MSSM and their detection at the LHC
Within the ?MSSM, a Minimal Supersymmetric neutrino See-saw Model, Lepton Flavour Violating Higgs couplings are strongly enhanced at large tan? (?30), which can lead to BR(H0/A0???)?O(10?4), for MH0/A0?160 GeV. Enhancements on the production of Higgs bosons, through the gluon fusion mechanism, gg?H0/A0gg?H0/A0, and the associated production channel gg,qq¯?bb¯H0/A0, whose rates grow with tan?, as well as the mass degeneracy that occurs between the H0 and A0 states in this regime, also contribute to further the possibilities to detect a heavy Higgs signal into ?? pairs. We show that the separation of ?? Higgs events from the background at the upcoming CERN Large Hadron Collider could be done for Higgs masses up to about 600 GeV for 300 fb?1 of luminosity, for large tan? values. However, even with as little as 10 fb?1 one can probe H0/A0 masses up to 400 GeV or so, if tan?=60. Altogether, these processes then provide a new Higgs discovery mode as well as an independent test of flavour physics.
0370-2693
376-381
Diaz-Cruz, J.L.
22bc9762-21a5-4b13-aa9f-0ed980eb9d7c
Ghosh, Dilip Kumar
465cfb7e-9af3-4393-bec2-b179799b8118
Moretti, S.
b57cf0f0-4bc3-4e02-96e3-071255366614
Diaz-Cruz, J.L.
22bc9762-21a5-4b13-aa9f-0ed980eb9d7c
Ghosh, Dilip Kumar
465cfb7e-9af3-4393-bec2-b179799b8118
Moretti, S.
b57cf0f0-4bc3-4e02-96e3-071255366614

Diaz-Cruz, J.L., Ghosh, Dilip Kumar and Moretti, S. (2009) Lepton flavour violating heavy Higgs decays within the ?MSSM and their detection at the LHC. Physics Letters B, 679 (4), 376-381. (doi:10.1016/j.physletb.2009.07.065).

Record type: Article

Abstract

Within the ?MSSM, a Minimal Supersymmetric neutrino See-saw Model, Lepton Flavour Violating Higgs couplings are strongly enhanced at large tan? (?30), which can lead to BR(H0/A0???)?O(10?4), for MH0/A0?160 GeV. Enhancements on the production of Higgs bosons, through the gluon fusion mechanism, gg?H0/A0gg?H0/A0, and the associated production channel gg,qq¯?bb¯H0/A0, whose rates grow with tan?, as well as the mass degeneracy that occurs between the H0 and A0 states in this regime, also contribute to further the possibilities to detect a heavy Higgs signal into ?? pairs. We show that the separation of ?? Higgs events from the background at the upcoming CERN Large Hadron Collider could be done for Higgs masses up to about 600 GeV for 300 fb?1 of luminosity, for large tan? values. However, even with as little as 10 fb?1 one can probe H0/A0 masses up to 400 GeV or so, if tan?=60. Altogether, these processes then provide a new Higgs discovery mode as well as an independent test of flavour physics.

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More information

e-pub ahead of print date: 3 August 2009
Published date: 31 August 2009
Organisations: Physics & Astronomy

Identifiers

Local EPrints ID: 144419
URI: http://eprints.soton.ac.uk/id/eprint/144419
ISSN: 0370-2693
PURE UUID: 9c219bc0-93da-41a9-a968-a58a8f5a2545

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Date deposited: 17 Sep 2013 10:12
Last modified: 08 Nov 2021 18:10

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Contributors

Author: J.L. Diaz-Cruz
Author: Dilip Kumar Ghosh
Author: S. Moretti

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