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

Khachatryan, Vardan

doi:10.1007/JHEP11(2015)018

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

Journal Article · Wed Nov 04 00:00:00 EST 2015 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/JHEP11(2015)018· OSTI ID:1221364

Khachatryan, Vardan ^[1]

Yerevan Physics Inst. (YerPhI), Yerevan (Armenia). et al.

Our 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 m H± < m t - m b, and in the direct production pp → t(b)H^±for m H± > m t - m b. The H^± → τ ^± ν _τ and H^± → tb decay modes in the final states τ _h+jets, μτ _h, ℓ+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. Furthermore, a model-independent 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 m _H± = 80–160 GeV, while the upper limit on the cross section times branching fraction σ(pp→t(b)H±)B(H^±→ τ^±ν_τ)=0.38-0.025 pb is set in the mass range m _H+ = 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 m _H± = 180–600 GeV. The combination of all considered decay modes and final states is used to set exclusion limits in the m H_±-tan β parameter space in different MSSM benchmark scenarios.

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Research Organization:: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Contributing Organization:: CMS Collaboration

Grant/Contract Number:: AC02-07CH11359

OSTI ID:: 1221364

Report Number(s):: FERMILAB-PUB-15-377-CMS; arXiv eprint number arXiv:1508.07774

Journal Information:: Journal of High Energy Physics (Online), Vol. 2015, Issue 11; ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 74 works

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