Measurement of the mass of the top quark in decays with a J/psi meson in pp collisions at 8 TeV

V. Khachatryan M. Besancon 1 F. Couderc 1 M. Dejardin 1 D. Denegri 1 B. Fabbro 1 J.L. Faure 1 C. Favaro 1 F. Ferri 1 S. Ganjour 1 S. Ghosh 1 A. Givernaud 1 P. Gras 1 G. Hamel De Monchenault 1 P. Jarry 1 I. Kucher 1 E. Locci 1 M. Machet 1 J. Malcles 1 J. Rander 1 A. Rosowsky 1 M. Titov 1 A. Zghiche 1 A. Abdulsalam 2 I. Antropov 2 S. Baffioni 2 F. Beaudette 2 P. Busson 2 L. Cadamuro 2 E. Chapon 2 C. Charlot 2 O. Davignon 2 R. Granier De Cassagnac 2 M. Jo 2 S. Lisniak 2 P. Miné 2 M. Nguyen 2 C. Ochando 2 G. Ortona 2 P. Paganini 2 P. Pigard 2 S. Regnard 2 R. Salerno 2 Y. Sirois 2 T. Strebler 2 Y. Yilmaz 2 A. Zabi 2 J.-L. Agram 3 J. Andrea 3 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 A.-C. Le Bihan 3 J.A. Merlin 3 K. Kovpen 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 G. Grenier 5 B. Ille 5 F. Lagarde 5 I.B. Laktineh 5 M. Lethuillier 5 L. Mirabito 5 A.L. Pequegnot 5 S. Perries 5 A. Popov 5 D. Sabes 5 V. Sordini 5 M. Vander Donckt 5 P. Verdier 5 S. Viret 5
Abstract : A first measurement is presented of the top quark mass using the decay channel t to (W to l nu) (b to J/psi+X to mu+mu- + X), in events selected in proton-proton collisions and recorded with the CMS detector at the LHC at a center-of-mass energy of 8TeV. The data correspond to an integrated luminosity of 19.7 inverse femtobarns, with 666 ttbar and single top quark candidate events containing a reconstructed J/psi candidate decaying into an oppositely-charged muon pair. The mass of the (J/psi+l) system, where l is an electron or a muon from W boson decay, is used to extract a top quark mass of 173.5 +/- 3.0 (stat) +/- 0.9 (syst) GeV.
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Journal of High Energy Physics, Springer Verlag (Germany), 2016, 12, pp.123. 〈10.1007/JHEP12(2016)123〉
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Soumis le : vendredi 12 août 2016 - 10:22:11
Dernière modification le : jeudi 12 avril 2018 - 01:48:55

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V. Khachatryan, M. Besancon, F. Couderc, M. Dejardin, D. Denegri, et al.. Measurement of the mass of the top quark in decays with a J/psi meson in pp collisions at 8 TeV. Journal of High Energy Physics, Springer Verlag (Germany), 2016, 12, pp.123. 〈10.1007/JHEP12(2016)123〉. 〈in2p3-01353566〉

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