Search for charged Higgs bosons produced in association with a top quark and decaying via $H^{\pm} \rightarrow \tau\nu$ using $pp$ collision data recorded at $\sqrt{s} = 13$ TeV by the ATLAS detector

G. Aad 1 M. Alstaty 1 M. Barbero 1 A. Calandri 1 T.P. Calvet 1 Y. Coadou 1 C. Diaconu 1 S. Diglio 1 F. Djama 1 V. Ellajosyula 1 L. Feligioni 1 J. Gao 1 A. Hadef 1 G.D. Hallewell 1 F. Hubaut 1 S.J. Kahn 1 E. B. F. G. Knoops 1 E. Le Guirriec 1 J. Liu 1 K. Liu 1 D. Madaffari 1 E. Monnier 1 S. Muanza 1 E. Nagy 1 P. Pralavorio 1 Y. Rodina 1 A. Rozanov 1 M. Talby 1 T. Theveneaux-Pelzer 1 R.E. Ticse Torres 1 S. Tisserant 1 J. Toth 1 F. Touchard 1 L. Vacavant 1 Chen Wang 2, 1 D. Boumediene 3 E. Busato 3 D. Calvet 3 S. Calvet 3 A.R. Chomont 3 J. Donini 3 Ph. Gris 3 R. Madar 3 D. Pallin 3 S.M. Romano Saez 3 C. Santoni 3 D. Simon 3 F. Vazeille 3 S. Albrand 4 S. Berlendis 4 C. Camincher 4 J. Collot 4 S. Crépé-Renaudin 4 P.A. Delsart 4 C. Gabaldon 4 M.H. Genest 4 J. Gradin 4 J.Y. Hostachy 4 F. Ledroit-Guillon 4 A. Lleres 4 A. Lucotte 4 F. Malek 4 E. Petit 4 J. Stark 4 B. Trocmé 4 M. Wu 4 M.K. Ayoub 5 A. Bassalat 5 S. Binet 5 C. Becot 5 C. Bourdarios 5 J.B. de Vivie De Regie 5 D. Delgove 5 L. Duflot 5 M. Escalier 5 L. Fayard 5 D. Fournier 5 E.L. Gkougkousis 5 J.-F. Grivaz 5 T. Guillemin 5 F. Hariri 5 S. Henrot-Versille 5 J. Hrivnac 5 L. Iconomidou-Fayard 5 M. Kado 5 A. Lounis 5 N. Makovec 5 N. Morange 5 C. Nellist 5 P. Petroff 5 L. Poggioli 5 P. Puzo 5 A. Renaud 5 G. Rybkin 5 D. Rousseau 5 A.C. Schaffer 5 L. Serin 5 E. Scifo 5 S. Simion 5 R. Tanaka 5 D. Zerwas 5 Zhongkai Zhang 5 Y. Zhao 5 Z. Barnovska 6 N. Berger 6 M. Delmastro 6 L. Di Ciaccio 6 S. Elles 6 Grevtsov K. 6 T. Hryn’ova 6 S. Jézéquel 6 I. Koletsou 6 R. Lafaye 6 J. Leveque 6 N. Massol 6 P. Mastrandrea 6 G. Sauvage 6 E. Sauvan 6 O. Simard 6 T. Todorov 6 I. Wingerter-Seez 6 E. Yatsenko 6 G . Rahal 7
Abstract : Charged Higgs bosons produced in association with a single top quark and decaying via $H^{\pm} \rightarrow \tau\nu$ are searched for with the ATLAS experiment at the LHC, using proton-proton collision data at $\sqrt{s} = 13$ TeV corresponding to an integrated luminosity of 3.2 $\mathrm{fb}^{-1}$. The final state is characterised by the presence of a hadronic $\tau$ decay and missing transverse momentum, as well as a hadronically decaying top quark, resulting in the absence of high-transverse-momentum electrons and muons. The data are found to be consistent with the expected background from Standard Model processes. A statistical analysis leads to $95\%$ confidence-level upper limits on the production cross section times branching fraction, $\sigma(pp \rightarrow [b]t H^{\pm}) \times \mbox{BR}(H^{\pm} \rightarrow \tau\nu)$, between 1.9 pb and 15 fb, for charged Higgs boson masses ranging from 200 to 2000 GeV. The exclusion limits for this search surpass those obtained with the proton-proton collision data recorded at $\sqrt{s} = 8$ TeV.
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Article dans une revue
Physics Letters B, Elsevier, 2016, 759, pp.555-574. 〈10.1016/j.physletb.2016.06.017〉
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Soumis le : jeudi 31 mars 2016 - 09:02:47
Dernière modification le : jeudi 18 janvier 2018 - 01:51:10

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G. Aad, M. Alstaty, M. Barbero, A. Calandri, T.P. Calvet, et al.. Search for charged Higgs bosons produced in association with a top quark and decaying via $H^{\pm} \rightarrow \tau\nu$ using $pp$ collision data recorded at $\sqrt{s} = 13$ TeV by the ATLAS detector. Physics Letters B, Elsevier, 2016, 759, pp.555-574. 〈10.1016/j.physletb.2016.06.017〉. 〈in2p3-01295448〉

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