# Neutral Higgs limits at √s=7 TeV using the channel ττ

The preprint is available here.

J. High Energy Phys. 05 (2013) 132

arXiv:1304.2591

More detailed information: ANA note 2013-010

## Abstract

Limits on the cross-section times branching fraction for neutral Higgs bosons, produced in collisions at TeV, and decaying to two tau leptons with pseudorapidities between 2.0 and 4.5, are presented. The result is based on a dataset, corresponding to an integrated luminosity of 1.0 , collected with the LHCb detector. Candidates are identified by reconstructing final states with two muons, a muon and an electron, a muon and a hadron, or an electron and a hadron. A model independent upper limit at the confidence level is set on a neutral Higgs boson cross-section times branching fraction. It varies from 8.6 pb for a Higgs boson mass of 90 GeV to 0.7 pb for a Higgs boson mass of 250 GeV, and is compared to the Standard Model expectation. An upper limit on in the Minimal Supersymmetric Model is set in the scenario. It ranges from 34 for a CP-odd Higgs boson mass of 90 GeV to 70 for a pseudo-scalar Higgs boson mass of 140 GeV.

## Figures

Caption Figure
(Fig.1a.eps, Fig.1a.pdf, Fig.1a.png) Invariant mass distributions for (a) , (b) , (c) , (d) , (e) , and (f) all candidates. The background (solid red) is normalised to the theoretical expectation. The QCD (horizontal green), electroweak (vertical blue), and (solid cyan) backgrounds are estimated from data. The (vertical orange) and (horizontal magenta) backgrounds are estimated from simulation and generally not visible. The contribution that would be expected from an MSSM signal for GeV and is shown in solid green.
(Fig.1b.eps, Fig.1b.pdf, Fig.1b.png) Invariant mass distributions for (a) , (b) , (c) , (d) , (e) , and (f) all candidates. The background (solid red) is normalised to the theoretical expectation. The QCD (horizontal green), electroweak (vertical blue), and (solid cyan) backgrounds are estimated from data. The (vertical orange) and (horizontal magenta) backgrounds are estimated from simulation and generally not visible. The contribution that would be expected from an MSSM signal for GeV and is shown in solid green.
(Fig.1c.eps, Fig.1c.pdf, Fig.1c.png) Invariant mass distributions for (a) , (b) , (c) , (d) , (e) , and (f) all candidates. The background (solid red) is normalised to the theoretical expectation. The QCD (horizontal green), electroweak (vertical blue), and (solid cyan) backgrounds are estimated from data. The (vertical orange) and (horizontal magenta) backgrounds are estimated from simulation and generally not visible. The contribution that would be expected from an MSSM signal for GeV and is shown in solid green.
(Fig.1d.eps, Fig.1d.pdf, Fig.1d.png) Invariant mass distributions for (a) , (b) , (c) , (d) , (e) , and (f) all candidates. The background (solid red) is normalised to the theoretical expectation. The QCD (horizontal green), electroweak (vertical blue), and (solid cyan) backgrounds are estimated from data. The (vertical orange) and (horizontal magenta) backgrounds are estimated from simulation and generally not visible. The contribution that would be expected from an MSSM signal for GeV and is shown in solid green.
(Fig.1e.eps, Fig.1e.pdf, Fig.1e.png) Invariant mass distributions for (a) , (b) , (c) , (d) , (e) , and (f) all candidates. The background (solid red) is normalised to the theoretical expectation. The QCD (horizontal green), electroweak (vertical blue), and (solid cyan) backgrounds are estimated from data. The (vertical orange) and (horizontal magenta) backgrounds are estimated from simulation and generally not visible. The contribution that would be expected from an MSSM signal for GeV and is shown in solid green.
(Fig.1f.eps, Fig.1f.pdf, Fig.1f.png) Invariant mass distributions for (a) , (b) , (c) , (d) , (e) , and (f) all candidates. The background (solid red) is normalised to the theoretical expectation. The QCD (horizontal green), electroweak (vertical blue), and (solid cyan) backgrounds are estimated from data. The (vertical orange) and (horizontal magenta) backgrounds are estimated from simulation and generally not visible. The contribution that would be expected from an MSSM signal for GeV and is shown in solid green.
(Fig.2a.eps, Fig.2a.pdf, Fig.2a.png) Model independent combined limit on cross-section by branching fraction for a Higgs boson decaying to two tau leptons at as a function of is given on the left. The background only expected limit (dashed red) and (green) and (yellow) bands are compared with the observed limit (solid black) and the expected SM theory (dotted black) with uncertainty (grey). The combined MSSM upper limit on as a function of is given on the right and compared to ATLAS (dotted maroon and dot-dashed magenta), CMS (dot-dot-dashed blue and dot-dot-dot-dashed cyan), and LEP (hatched orange) results.
(Fig.2b.eps, Fig.2b.pdf, Fig.2b.png) Model independent combined limit on cross-section by branching fraction for a Higgs boson decaying to two tau leptons at as a function of is given on the left. The background only expected limit (dashed red) and (green) and (yellow) bands are compared with the observed limit (solid black) and the expected SM theory (dotted black) with uncertainty (grey). The combined MSSM upper limit on as a function of is given on the right and compared to ATLAS (dotted maroon and dot-dashed magenta), CMS (dot-dot-dashed blue and dot-dot-dot-dashed cyan), and LEP (hatched orange) results.
Topic attachments
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Topic revision: r4 - 2014-01-17 - KatharinaMueller

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