Measurement of the ratio of the production cross sections times branching fractions of Bc                      ±→ J/ψπ± and B± → J/ψK± and (Formula presented.) in pp collisions at (Formula presented.) TeV

The CMS Collaboration

doi:10.1007/JHEP01(2015)063

Measurement of the ratio of the production cross sections times branching fractions of B_c ^±→ J/ψπ^± and B^± → J/ψK^± and (Formula presented.) in pp collisions at (Formula presented.) TeV

The CMS Collaboration

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

Abstract

The ratio of the production cross sections times branching fractions (Formula presented.)(Formula presented.) is 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 B_c ^± and B^± mesons with transverse momentum p_T > 15 GeV and rapidity |y| < 1.6. The data sample corresponds to an integrated luminosity of 5.1 fb⁻¹. The ratio is determined to be (Formula presented.)(Formula presented.). The B_c ^± → J/ψπ^±π^±π^∓ decay is also observed in the same data sample. Using a model-independent method developed to measure the efficiency given the presence of resonant behaviour in the three-pion system, the ratio of the branching fractions (Formula presented.)(Formula presented.) is measured to be (Formula presented.)(Formula presented.), consistent with the previous LHCb result.[Figure not available: see fulltext.].

Original language	English
Article number	63
Journal	Journal of High Energy Physics
Volume	2015
Issue number	1
DOIs	https://doi.org/10.1007/JHEP01(2015)063
Publication status	Published - 2015

Bibliographical note

Publisher Copyright:
© 2015, The Author(s).

Keywords

B physics
Branching fraction
Hadron-Hadron Scattering

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1007/JHEP01(2015)063

Cite this

Measurement of the ratio of the production cross sections times branching fractions of B_c ^±→ J/ψπ^± and B^± → J/ψK^± and (Formula presented.) in pp collisions at (Formula presented.) TeV. / The CMS Collaboration.
In: Journal of High Energy Physics, Vol. 2015, No. 1, 63, 2015.

Research output: Contribution to journal › Article › peer-review

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abstract = "The ratio of the production cross sections times branching fractions (Formula presented.)(Formula presented.) is 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 ± and B± mesons with transverse momentum pT > 15 GeV and rapidity |y| < 1.6. The data sample corresponds to an integrated luminosity of 5.1 fb−1. The ratio is determined to be (Formula presented.)(Formula presented.). The Bc ± → J/ψπ±π±π∓ decay is also observed in the same data sample. Using a model-independent method developed to measure the efficiency given the presence of resonant behaviour in the three-pion system, the ratio of the branching fractions (Formula presented.)(Formula presented.) is measured to be (Formula presented.)(Formula presented.), consistent with the previous LHCb result.[Figure not available: see fulltext.].",

keywords = "B physics, Branching fraction, Hadron-Hadron Scattering",

author = "{The CMS Collaboration} and V. Khachatryan and Sirunyan, {A. M.} and A. Tumasyan and W. Adam and T. Bergauer and M. Dragicevic and J. Er{\"o} and C. Fabjan and M. Friedl and R. Fr{\"u}hwirth and Ghete, {V. M.} and C. Hartl and N. H{\"o}rmann and J. Hrubec and M. Jeitler and W. Kiesenhofer and V. Kn{\"u}nz and M. Krammer and I. Kr{\"a}tschmer and D. Liko and I. Mikulec and D. Rabady and B. Rahbaran and H. Rohringer and R. Sch{\"o}fbeck and J. Strauss and A. Taurok and W. Treberer-Treberspurg and W. Waltenberger and Wulz, {C. E.} and V. Mossolov and N. Shumeiko and Gonzalez, {J. Suarez} and S. Alderweireldt and M. Bansal and S. Bansal and T. Cornelis and {De Wolf}, {E. A.} and X. Janssen and A. Knutsson and S. Luyckx and S. Ochesanu and R. Rougny and {Van De Klundert}, M. and {Van Haevermaet}, H. and {Van Mechelen}, P. and S. Choi and B. Hong and Park, {S. K.} and J. Yoo",

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AU - Sirunyan, A. M.

AU - Tumasyan, A.

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AU - Strauss, J.

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AU - Treberer-Treberspurg, W.

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AU - Choi, S.

AU - Hong, B.

AU - Park, S. K.

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N2 - The ratio of the production cross sections times branching fractions (Formula presented.)(Formula presented.) is 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 ± and B± mesons with transverse momentum pT > 15 GeV and rapidity |y| < 1.6. The data sample corresponds to an integrated luminosity of 5.1 fb−1. The ratio is determined to be (Formula presented.)(Formula presented.). The Bc ± → J/ψπ±π±π∓ decay is also observed in the same data sample. Using a model-independent method developed to measure the efficiency given the presence of resonant behaviour in the three-pion system, the ratio of the branching fractions (Formula presented.)(Formula presented.) is measured to be (Formula presented.)(Formula presented.), consistent with the previous LHCb result.[Figure not available: see fulltext.].

AB - The ratio of the production cross sections times branching fractions (Formula presented.)(Formula presented.) is 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 ± and B± mesons with transverse momentum pT > 15 GeV and rapidity |y| < 1.6. The data sample corresponds to an integrated luminosity of 5.1 fb−1. The ratio is determined to be (Formula presented.)(Formula presented.). The Bc ± → J/ψπ±π±π∓ decay is also observed in the same data sample. Using a model-independent method developed to measure the efficiency given the presence of resonant behaviour in the three-pion system, the ratio of the branching fractions (Formula presented.)(Formula presented.) is measured to be (Formula presented.)(Formula presented.), consistent with the previous LHCb result.[Figure not available: see fulltext.].

KW - B physics

KW - Branching fraction

KW - Hadron-Hadron Scattering

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