Measurement of the ratio of the production cross sections times branching fractions of Bc+/- to J/psi pi+/- and B+/- to J/psi K+/- and B(Bc+/- to J/psi pi+/- pi+/- pi-/+)/B(Bc+/- to J/psi pi+/-) in pp collisions at sqrt(s) = 7 TeV

V. Khachatryan; M. Besancon; F. Couderc; M. Dejardin; D. Denegri; B. Fabbro; J.L. Faure; C. Favaro; F. Ferri; S. Ganjour; A. Givernaud; P. Gras; G. Hamel De Monchenault; P. Jarry; E. Locci; J. Malcles; J. Rander; A. Rosowsky; M. Titov; S. Baffioni; F. Beaudette; P. Busson; C. Charlot; T. Dahms; M. Dalchenko; L. Dobrzynski; N. Filipovic; A. Florent; R. Granier De Cassagnac; L. Mastrolorenzo; P. Mine; C. Mironov; I.N. Naranjo; H. Xiao; M. Nguyen; C. Ochando; P. Paganini; S. Regnard; R. Salerno; J.B. Sauvan; Y. Sirois; C. Veelken; Y. Yilmaz; S. Viret; A. Zabi; J. Andrea; A. Aubin; D. Bloch; J.-M. Brom; J.-L. Agram; E.C. Chabert; C. Collard; E. Conte; J.-C. Fontaine; D. Gele; U. Goerlach; C. Goetzmann; A.-C. Le Bihan; P. Van Hove; S. Gadrat; S. Beauceron; N. Beaupere; G. Boudoul; E. Bouvier; S. Brochet; C.A. Carrillo Montoya; J. Chasserat; R. Chierici; D. Contardo; P. Depasse; H. El Mamouni; J. Fan; J. Fay; S. Gascon; M. Gouzevitch; B. Ille; T. Kurca; M. Lethuillier; L. Mirabito; S. Perries; J.D. Ruiz Alvarez; D. Sabes; L. Sgandurra; V. Sordini; M. Vander Donckt; P. Verdier

doi:10.1007/JHEP01(2015)063

Journal articles

Measurement of the ratio of the production cross sections times branching fractions of Bc+/- to J/psi pi+/- and B+/- to J/psi K+/- and B(Bc+/- to J/psi pi+/- pi+/- pi-/+)/B(Bc+/- to J/psi pi+/-) in pp collisions at sqrt(s) = 7 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 A. Givernaud ¹ P. Gras ¹ G. Hamel De Monchenault ¹ P. Jarry ¹ E. Locci ¹ J. Malcles ¹ J. Rander ¹ A. Rosowsky ¹ M. Titov ¹ S. Baffioni ² F. Beaudette ² P. Busson ² C. Charlot ² T. Dahms ² M. Dalchenko ² L. Dobrzynski ² N. Filipovic ² A. Florent ² R. Granier De Cassagnac ² L. Mastrolorenzo ² P. Mine ² C. Mironov ² I.N. Naranjo ² H. Xiao ³ M. Nguyen ² C. Ochando ² P. Paganini ² S. Regnard ² R. Salerno ² J.B. Sauvan ² Y. Sirois ² C. Veelken ² Y. Yilmaz ² S. Viret ³ A. Zabi ² J. Andrea ⁴ A. Aubin ⁴ D. Bloch ⁴ J.-M. Brom ⁴ J.-L. Agram ⁴ E.C. Chabert ⁴ C. Collard ⁴ E. Conte ⁴ J.-C. Fontaine ⁴ D. Gele ⁴ U. Goerlach ⁴ C. Goetzmann ⁴ A.-C. Le Bihan ⁴ P. Van Hove ⁴ S. Gadrat ⁵ S. Beauceron ³ N. Beaupere ³ G. Boudoul ³ E. Bouvier ³ S. Brochet ³ C.A. Carrillo Montoya ³ J. Chasserat ³ R. Chierici ³ D. Contardo ³ P. Depasse ³ H. El Mamouni ³ J. Fan ³ J. Fay ³ S. Gascon ³ M. Gouzevitch ³ B. Ille ³ T. Kurca ³ M. Lethuillier ³ L. Mirabito ³ S. Perries ³ J.D. Ruiz Alvarez ³ D. Sabes ³ L. Sgandurra ³ V. Sordini ³ M. Vander Donckt ³ P. Verdier ³

1 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers

2 LLR - Laboratoire Leprince-Ringuet

3 IPNL - Institut de Physique Nucléaire de Lyon

4 IPHC - Institut Pluridisciplinaire Hubert Curien

5 CC-IN2P3 - Centre de Calcul de l'IN2P3

Abstract : The Bc+/- to J/psi pi+/- and Bc+/- to J/psi pi+/- pi+/- pi-/+ decay modes are studied in proton-proton collisions at a center-of-mass energy of 7 TeV with the CMS detector at the LHC. The kinematic region investigated requires Bc+/- mesons with transverse momentum pt > 15 GeV and rapidity abs(y) < 1.6. The data sample corresponds to an integrated luminosity of 5.1 inverse femtobarns. The ratio of the branching fractions B(Bc+/- to J/psi pi+/- pi+/- pi-/+)/B(Bc+/- to J/psi pi+/-) is measured to be 2.55 +/- 0.80 (stat) +/- 0.33 (syst) +0.04/-0.01 (tau[Bc+]). The ratio of the production cross sections times branching fractions (sigma(Bc+) B(Bc+ to J/psi pi+))/ (sigma(B+) B(B+ to J/psi K+)) is determined to be [0.48 +/- 0.05 (stat) +/- 0.03 (syst) +/- 0.05 (tau_{Bc})]%

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Journal articles

Domain :

Physics [physics] / High Energy Physics - Experiment [hep-ex]

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http://hal.in2p3.fr/in2p3-01077238
Contributor : Dominique Girod <>
Submitted on : Friday, October 24, 2014 - 11:21:56 AM
Last modification on : Friday, June 5, 2020 - 10:52:07 AM

Measurement of the ratio of the production cross sections times branching fractions of Bc+/- to J/psi pi+/- and B+/- to J/psi K+/- and B(Bc+/- to J/psi pi+/- pi+/- pi-/+)/B(Bc+/- to J/psi pi+/-) in pp collisions at sqrt(s) = 7 TeV

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Measurement of the ratio of the production cross sections times branching fractions of Bc+/- to J/psi pi+/- and B+/- to J/psi K+/- and B(Bc+/- to J/psi pi+/- pi+/- pi-/+)/B(Bc+/- to J/psi pi+/-) in pp collisions at sqrt(s) = 7 TeV

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