A search for a charged Higgs boson is performed with a data sample corresponding to an integrated luminosity of 19.7 ± 0.5 fb−1 collected with the CMS detector in proton-proton collisions at √s = 8,TeV. The charged Higgs boson is searched for in top quark decays for mH± < mt − mb, and in the direct production pp → t(b)H± for mH± > mt − mb. The H± → τ ±ντ and H± → tb decay modes in the final states τh+jets, µτh, `+jets, and ll’ (l=e, µ) are considered in the search. No signal is observed and 95% confidence level upper limits are set on the charged Higgs boson production. A modelindependent upper limit on the product branching fraction B(t → H±b) B(H± → τ ±ντ) = 1.2–0.15% is obtained in the mass range mH± = 80–160 GeV, while the upper limit on the cross section times branching fraction σ(pp → t(b)H±) B(H± → τ ±ντ) = 0.38–0.025 pb is set in the mass range mH+ = 180–600 GeV. Here, σ(pp → t(b)H±) stands for the cross section sum σ(pp → t(b)H+) + σ(pp → t(b)H−). Assuming B(H± → tb) = 1, an upper limit on σ(pp → t(b)H±) of 2.0–0.13 pb is set for mH± = 180–600 GeV. The combination of all considered decay modes and final states is used to set exclusion limits in the mH±–tan β parameter space in different MSSM benchmark scenarios.

Search for a charged Higgs boson in pp collisions at √s = 8 TeV

Sola, V.;AMAPANE, Nicola Carlo;ARGIRO', Stefano;BELLAN, Riccardo;COSTA, Marco;COVARELLI, Roberto;MIGLIORE, Ernesto;MONACO, Vincenzo;OBERTINO, Maria Margherita;ROMERO, Alessandra;SACCHI, Roberto;SOLANO, Ada Maria;
2015-01-01

Abstract

A search for a charged Higgs boson is performed with a data sample corresponding to an integrated luminosity of 19.7 ± 0.5 fb−1 collected with the CMS detector in proton-proton collisions at √s = 8,TeV. The charged Higgs boson is searched for in top quark decays for mH± < mt − mb, and in the direct production pp → t(b)H± for mH± > mt − mb. The H± → τ ±ντ and H± → tb decay modes in the final states τh+jets, µτh, `+jets, and ll’ (l=e, µ) are considered in the search. No signal is observed and 95% confidence level upper limits are set on the charged Higgs boson production. A modelindependent upper limit on the product branching fraction B(t → H±b) B(H± → τ ±ντ) = 1.2–0.15% is obtained in the mass range mH± = 80–160 GeV, while the upper limit on the cross section times branching fraction σ(pp → t(b)H±) B(H± → τ ±ντ) = 0.38–0.025 pb is set in the mass range mH+ = 180–600 GeV. Here, σ(pp → t(b)H±) stands for the cross section sum σ(pp → t(b)H+) + σ(pp → t(b)H−). Assuming B(H± → tb) = 1, an upper limit on σ(pp → t(b)H±) of 2.0–0.13 pb is set for mH± = 180–600 GeV. The combination of all considered decay modes and final states is used to set exclusion limits in the mH±–tan β parameter space in different MSSM benchmark scenarios.
2015
2015
11
1
64
http://link.springer.com/journal/13130
Hadron-Hadron Scattering; Higgs physics; Supersymmetry; Nuclear and High Energy Physics
The CMS collaboration, Null; Khachatryan, V; Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragic...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1571215
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