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Associated charged Higgs and W boson production in the MSSM at the CERN large hadron collider

Eriksson, D. LU ; Hesselbach, S. and Rathsman, J. LU (2008) In European Physical Journal C 53(2). p.267-280
Abstract

We investigate the viability of observing charged Higgs bosons ( H± ) produced in association with W bosons at the CERN large hadron collider, using the leptonic decay H+ → + ν τ and hadronic W decay, within different scenarios of the minimal supersymmetric standard model (MSSM) with both real and complex parameters. Performing a parton level study we show how the irreducible standard model background from W+2 jets can be controlled by applying appropriate cuts and find that the size of a possible signal depends on the cuts needed to suppress QCD backgrounds and misidentifications. In the standard maximal mixing scenario of the MSSM we find a viable signal for large tan β and intermediate H ± masses ( ∼ mt ) when using softer... (More)

We investigate the viability of observing charged Higgs bosons ( H± ) produced in association with W bosons at the CERN large hadron collider, using the leptonic decay H+ → + ν τ and hadronic W decay, within different scenarios of the minimal supersymmetric standard model (MSSM) with both real and complex parameters. Performing a parton level study we show how the irreducible standard model background from W+2 jets can be controlled by applying appropriate cuts and find that the size of a possible signal depends on the cuts needed to suppress QCD backgrounds and misidentifications. In the standard maximal mixing scenario of the MSSM we find a viable signal for large tan β and intermediate H ± masses ( ∼ mt ) when using softer cuts ( p_⊥, p_τjet > ∈50 GeV), whereas for harder cuts ( p_⊥, p_⊥ τ jet> 100 GeV) we only find a viable signal for very large tan β (). We have also investigated a special class of MSSM scenarios with large mass splittings among the heavy Higgs bosons where the cross-section can be resonantly enhanced by factors up to one hundred, with a strong dependence on the CP -violating phases. Even so we find that the signal after cuts remains small except for small masses ( {} m_t) when using the softer cuts. Finally, in all the scenarios we have investigated we have only found small CP -asymmetries.

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type
Contribution to journal
publication status
published
subject
in
European Physical Journal C
volume
53
issue
2
pages
14 pages
publisher
Springer
external identifiers
  • scopus:38349001242
ISSN
1434-6044
DOI
10.1140/epjc/s10052-007-0453-x
language
English
LU publication?
no
id
8eb10574-410b-40c8-a590-576c25d1cc48
date added to LUP
2019-05-14 13:43:38
date last changed
2022-01-31 19:50:25
@article{8eb10574-410b-40c8-a590-576c25d1cc48,
  abstract     = {{<p>We investigate the viability of observing charged Higgs bosons ( H± ) produced in association with W bosons at the CERN large hadron collider, using the leptonic decay H<sup>+</sup> → + ν τ and hadronic W decay, within different scenarios of the minimal supersymmetric standard model (MSSM) with both real and complex parameters. Performing a parton level study we show how the irreducible standard model background from W+2 jets can be controlled by applying appropriate cuts and find that the size of a possible signal depends on the cuts needed to suppress QCD backgrounds and misidentifications. In the standard maximal mixing scenario of the MSSM we find a viable signal for large tan β and intermediate H ± masses ( ∼ mt ) when using softer cuts ( p_⊥, p_τjet &gt; ∈50 GeV), whereas for harder cuts ( p_⊥, p_⊥ τ jet&gt; 100 GeV) we only find a viable signal for very large tan β (). We have also investigated a special class of MSSM scenarios with large mass splittings among the heavy Higgs bosons where the cross-section can be resonantly enhanced by factors up to one hundred, with a strong dependence on the CP -violating phases. Even so we find that the signal after cuts remains small except for small masses ( {} m_t) when using the softer cuts. Finally, in all the scenarios we have investigated we have only found small CP -asymmetries.</p>}},
  author       = {{Eriksson, D. and Hesselbach, S. and Rathsman, J.}},
  issn         = {{1434-6044}},
  language     = {{eng}},
  number       = {{2}},
  pages        = {{267--280}},
  publisher    = {{Springer}},
  series       = {{European Physical Journal C}},
  title        = {{Associated charged Higgs and W boson production in the MSSM at the CERN large hadron collider}},
  url          = {{http://dx.doi.org/10.1140/epjc/s10052-007-0453-x}},
  doi          = {{10.1140/epjc/s10052-007-0453-x}},
  volume       = {{53}},
  year         = {{2008}},
}