Search for lepton-flavour-violating decays of the Higgs and Z bosons with the ATLAS detector

G. Aad 1 M.K. Ayoub 2 A. Bassalat 2 S. Binet 2 C. Becot C. Bourdarios 2 J.B. de Vivie De Regie 2 D. Delgove 2 L. Duflot 2 M. Escalier 2 L. Fayard 2 D. Fournier 2 E.L. Gkougkousis 2 J.-F. Grivaz 2 F. Hariri 2 S. Henrot-Versille 2 J. Hrivnac 2 L. Iconomidou-Fayard 2 M. Kado 2 A. Lounis 2 N. Makovec 2 N. Morange 2 C. Nellist 2 P. Petroff 2 L. Poggioli 2 P. Puzo 2 A. Renaud 2 G. Rybkin 2 D. Rousseau 2 A.C. Schaffer 2 L. Serin 2 E. Scifo 2 S. Simion 2 R. Tanaka 2 D. Zerwas 2 Zhongkai Zhang 2 Y. Zhao 2 G. Rahal 3 Z. Barnovska 4 N. Berger 4 M. Delmastro 4 L. Di Ciaccio 4 S. Elles 4 K. Grevtsov 4 T. Guillemin 4 T. Hryn’ova 4 S. Jézéquel 4 I. Koletsou 4 R. Lafaye 4 J. Levêque 4 P. Mastrandea 4 G. Sauvage 4 E. Sauvan 4 O. Simard 4 B.H. Smart 4 T. Todorov 4 I. Wingerter-Seez 4 E. Yatsenko 4 S. Albrand 5 S. Berlendis 5 C. Camincher 5 J. Collot 5 S. Crépé-Renaudin 5 P.A. Delsart 5 C. Gabaldon 5 M.H. Genest 5 J. Gradin 5 J.Y. Hostachy 5 F. Ledroit-Guillon 5 A. Lleres 5 A. Lucotte 5 F. Malek 5 E. Petit 5 J. Stark 5 B. Trocmé 5 M. Wu 5 D. Boumediene 6 E. Busato 6 D. Calvet 6 S. Calvet 6 A.R. Chomont 6 J. Donini 6 Ph. Gris 6 R. Madar 6 D. Pallin 6 S.M. Romano Saez 6 C. Santoni 6 D. Simon 6 F. Vazeille 6 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 K. Mochizuki 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 1
Abstract : Direct searches for lepton flavour violation in decays of the Higgs and Z bosons with the ATLAS detector at the LHC are presented. The following three decays are considered: H→eτ, H→μτ, and Z→μτ. The searches are based on the data sample of proton--proton collisions collected by the ATLAS detector corresponding to an integrated luminosity of 20.3 fb−1 at a centre-of-mass energy of s√=8 TeV. No significant excess is observed, and upper limits on the lepton-flavour-violating branching ratios are set at the 95% confidence level: Br(H→eτ)< 1.04%, Br(H→μτ)< 1.43%, and Br(Z→μτ)< 1.69 × 10−5.
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European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2017, 77, pp.70. 〈10.1140/epjc/s10052-017-4624-0〉
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Soumis le : mercredi 27 avril 2016 - 10:54:43
Dernière modification le : lundi 9 avril 2018 - 12:22:07

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G. Aad, M.K. Ayoub, A. Bassalat, S. Binet, C. Becot, et al.. Search for lepton-flavour-violating decays of the Higgs and Z bosons with the ATLAS detector. European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2017, 77, pp.70. 〈10.1140/epjc/s10052-017-4624-0〉. 〈in2p3-01308047〉

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