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

• Published in: The journal of high energy physics 2015-11, Vol.2015 (11)
• Main Authors: Alderweireldt, S., Tavernier, S., Brun, H., Caillol, C., Clerbaux, B., Seva, T., Zenoni, F., Crucy, S., Poyraz, D., Popov, A., Beliy, N., Da Costa, E. M., Mercadante, P. G., Romero Abad, D., Chen, M., Attikis, A., Raidal, M., Fabbro, B., Heister, A., Lingemann, J., Karacheban, O., Sahin, M. Ö., Haller, J., Peiffer, T., De Boer, W., Giffels, M., Sarkar, S., Topkar, A., Dewanjee, R. K., Maity, M., Benvenuti, A. C., Grandi, C., Guiducci, L., Marcellini, S., Chiorboli, M., Piccolo, D., Calvelli, V., Menasce, D., Meneguzzo, A. T., Spiezia, A., Arcidiacono, R., Covarelli, R., Kiani, B., Pastrone, N., Sacchi, R., Tamponi, U., Lopez-Fernandez, R., Krofcheck, D., Gallinaro, M., Konoplyanikov, V., Kirakosyan, M., Ershov, A., Bayshev, I., Piedra Gomez, J., Bendavid, J., du Pree, T., Meijers, F., Racz, A., Steggemann, J., Takahashi, Y., Meister, D., Adiguzel, A., Akin, I. V., Zeyrek, M., Poll, A., Bell, K. W., Brown, R. M., Cockerill, D. J. A., Petyt, D., Citron, M., Lawson, P., Rohlf, J., Sinthuprasith, T., Cox, P. T., Suarez, I., Rinkevicius, A., Gottschalk, E., Hasegawa, S., McBride, P., Merkel, P., Rakness, G., Adams, J. R., Ogul, H., Makouski, M., Toda, S., Mignerey, A. C., Velicanu, D., Kubota, Y., Wang, R.-J., Palmer, C., Shi, X., Chen, Z., Contreras-Campana, E., Riley, G., Perloff, A., Ni, H., Wang, Y., Dasu, S., Hervé, A., Loveless, R.
• Format: Article
• Language: English
• Subjects: Classical and Quantum Gravitation; Elementary Particles; Hadron-Hadron Scattering; Higgs physics; IT & software; Physics; Physics and Astronomy; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Quantum Field Theories; Quantum Field Theory; Quantum Physics; Regular Article - Experimental Physics; Relativity Theory; String Theory; supersymmetry; telecommunications
• ISSN: 1029-8479; 1029-8479
• DOI: 10.1007/JHEP11(2015)018

A bstract 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 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. A model-independent upper limit on the product branching fraction ℬ t → H ± b ℬ H ± → τ ± ν τ = 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 ± → t b = 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.