Limits on neutral Higgs boson production in the forward region in $pp$ collisions at $\sqrt{s} = 7$ TeV

Abstract : Limits on the cross-section times branching fraction for neutral Higgs bosons, produced in $pp$ collisions at $\sqrt{s} = 7$ 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 $\mathrm{fb}^{-1}$, 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 95% 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 $\tan\beta$ in the Minimal Supersymmetric Model is set in the $m_{h^0}^\mathrm{max}$ 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.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00811832
Contributor : Sabine Starita <>
Submitted on : Thursday, April 11, 2013 - 10:52:42 AM
Last modification on : Wednesday, September 16, 2020 - 4:18:58 PM

Citation

R. Aaij, Y. Amhis, S. Barsuk, O. Callot, J. He, et al.. Limits on neutral Higgs boson production in the forward region in $pp$ collisions at $\sqrt{s} = 7$ TeV. Journal of High Energy Physics, Springer, 2013, 05, pp.132. ⟨10.1007/JHEP05(2013)132⟩. ⟨in2p3-00811832⟩

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