Search for a low-mass pseudoscalar Higgs boson produced in association with a b-bbar pair in pp collisions at sqrt(s) = 8 TeV

V. Khachatryan M. Besancon 1 F. Couderc 1 M. Dejardin 1 D. Denegri 1 B. Fabbro 1 J.L. Faure C. Favaro 1 F. Ferri 1 S. Ganjour 1 A. Givernaud 1 P. Gras G. Hamel De Monchenault 1 P. Jarry 1 E. Locci 1 M. Machet 1 J. Malcles 1 J. Rander 1 A. Rosowsky 1 M. Titov 1 A. Zghiche 1 I. Antropov S. Baffioni 2 F. Beaudette 2 P. Busson 2 L. Cadamuro 2 E. Chapon 1 C. Charlot 2 T. Dahms 2 O. Davignon 2 N. Filipovic 2 A. Florent 2 R. Granier De Cassagnac 2 S. Lisniak 2 L. Mastrolorenzo 2 P. Miné 2 I.N. Naranjo 2 M. Nguyen C. Ochando 2 G. Ortona 2 P. Paganini 2 P. Pigard 2 S. Regnard 2 R. Salerno 2 J.B. Sauvan 2 Y. Sirois 2 T. Strebler 2 Y. Yilmaz 2 A. Zabi 2 J.-L. Agram J. Andrea A. Aubin 3 D. Bloch 3 J.-M. Brom 3 M. Buttignol 3 E.C. Chabert 3 N. Chanon 3 C. Collard 3 E. Conte 3 X. Coubez 3 J.-C. Fontaine 3 D. Gelé 3 U. Goerlach 3 C. Goetzmann 3 A.-C. Le Bihan 3 J.A. Merlin 3 K. Skovpen 3 P. Van Hove 3 S. Gadrat 4 S. Beauceron 5 C. Bernet 5 G. Boudoul 5 E. Bouvier 5 C.A. Carrillo Montoya 5 R. Chierici 5 D. Contardo 5 B. Courbon 5 P. Depasse 5 H. El Mamouni 5 J. Fan 5 J. Fay 5 S. Gascon 5 M. Gouzevitch 5 B. Ille 5 F. Lagarde 5 I.B. Laktineh 5 M. Lethuillier 5 L. Mirabito 5 A.L. Pequegnot 5 S. Perries 5 J.D. Ruiz Alvarez 5 D. Sabes 5 L. Sgandurra 5 V. Sordini 5 M. Vander Donckt 5 P. Verdier 5 S. Viret 5
Abstract : A search is reported for a light pseudoscalar Higgs boson decaying to a pair of tau leptons, produced in association with a b-bbar pair, in the context of two-Higgs-doublet models. The results are based on pp collision data at a centre-of-mass energy of 8 TeV collected by the CMS experiment at the LHC and corresponding to an integrated luminosity of 19.7 inverse-femtobarns. Pseudoscalar boson masses between 25 and 80 GeV are probed. No evidence for a pseudoscalar boson is found and upper limits are set on the production cross section times branching fraction to tau pairs between 7 and 39 pb at the 95% confidence level. This search excludes a pseudoscalar Higgs boson with mass below 80 GeV, in Type II two-Higgs-doublet models with a negative coupling of standard model-like Higgs boson to down-type fermions.
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Physics Letters B, Elsevier, 2016, 758, pp.296-320. 〈10.1016/j.physletb.2016.05.003〉
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Soumis le : jeudi 12 novembre 2015 - 11:00:21
Dernière modification le : jeudi 10 mai 2018 - 02:00:22

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V. Khachatryan, M. Besancon, F. Couderc, M. Dejardin, D. Denegri, et al.. Search for a low-mass pseudoscalar Higgs boson produced in association with a b-bbar pair in pp collisions at sqrt(s) = 8 TeV. Physics Letters B, Elsevier, 2016, 758, pp.296-320. 〈10.1016/j.physletb.2016.05.003〉. 〈in2p3-01227867〉

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