First observation of a baryonic B+
                        c decay

LHCb Collaboration

doi:10.1103/PhysRevLett.113.152003

First observation of a baryonic B⁺ _c decay

LHCb Collaboration

Physics and Astronomy

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

28 Citations (Scopus)

116 Downloads (Pure)

Abstract

A baryonic decay of the B⁺ _c meson, B⁺ _c → J/ψpp¯π⁺, is observed for the first time, with a significance of 7.3 standard deviations, in pp collision data collected with the LHCb detector and corresponding to an integrated luminosity of 3.0 fb_-1 taken at center-of-mass energies of 7 and 8 TeV. With the B⁺ _c → J/ψπ⁺ decay as the normalization channel, the ratio of branching fractions is measured to be B(B⁺ _c → J/ψpp¯π⁺)/B(B⁺ _c → J/ψπ⁺) = 0.143^+0.039 _-0.034(stat) ± 0.013(syst). The mass of the B⁺ _c meson is determined as M(B⁺ _c) = 6274.0 ± 1.8(stat) ± 0.4(syst) MeV/c², using the B⁺ _c → J/ψpp¯π⁺ channel.

Original language	English
Article number	152003
Number of pages	9
Journal	Physical Review Letters
Volume	113
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevLett.113.152003
Publication status	Published - 10 Oct 2014

ASJC Scopus subject areas

General Physics and Astronomy

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@article{bf2888f89d9b4e369a5631bc7cedd375,

title = "First observation of a baryonic B+ c decay",

abstract = "A baryonic decay of the B+ c meson, B+ c → J/ψpp¯π+, is observed for the first time, with a significance of 7.3 standard deviations, in pp collision data collected with the LHCb detector and corresponding to an integrated luminosity of 3.0 fb-1 taken at center-of-mass energies of 7 and 8 TeV. With the B+ c → J/ψπ+ decay as the normalization channel, the ratio of branching fractions is measured to be B(B+ c → J/ψpp¯π+)/B(B+ c → J/ψπ+) = 0.143+0.039 -0.034(stat) ± 0.013(syst). The mass of the B+ c meson is determined as M(B+ c) = 6274.0 ± 1.8(stat) ± 0.4(syst) MeV/c2, using the B+ c → J/ψpp¯π+ channel.",

author = "\{LHCb Collaboration\} and R. Aaij and B. Adeva and M. Adinolfi and A. Affolder and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and S. Ali and G. Alkhazov and \{Alvarez Cartelle\}, P. and Alves, \{A. A.\} and S. Amato and S. Amerio and Y. Amhis and L. An and L. Anderlini and J. Anderson and R. Andreassen and M. Andreotti and Andrews, \{J. E.\} and Appleby, \{R. B.\} and \{Aquines Gutierrez\}, O. and F. Archilli and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and M. Baalouch and S. Bachmann and Back, \{J. J.\} and A. Badalov and W. Baldini and Barlow, \{R. J.\} and C. Barschel and S. Barsuk and W. Barter and S. Bifani and N. Farley and P. Griffith and P. Ilten and Kenyon, \{I. R.\} and C. Lazzeroni and A. Mazurov and J. McCarthy and Parkinson, \{C. J.\} and L. Pescatore and D. Popov and Watson, \{N. K.\}",

year = "2014",

month = oct,

day = "10",

doi = "10.1103/PhysRevLett.113.152003",

language = "English",

volume = "113",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society (APS)",

number = "15",

}

TY - JOUR

T1 - First observation of a baryonic B+ c decay

AU - LHCb Collaboration

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Affolder, A.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Ali, S.

AU - Alkhazov, G.

AU - Alvarez Cartelle, P.

AU - Alves, A. A.

AU - Amato, S.

AU - Amerio, S.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Anderson, J.

AU - Andreassen, R.

AU - Andreotti, M.

AU - Andrews, J. E.

AU - Appleby, R. B.

AU - Aquines Gutierrez, O.

AU - Archilli, F.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Auriemma, G.

AU - Baalouch, M.

AU - Bachmann, S.

AU - Back, J. J.

AU - Badalov, A.

AU - Baldini, W.

AU - Barlow, R. J.

AU - Barschel, C.

AU - Barsuk, S.

AU - Barter, W.

AU - Bifani, S.

AU - Farley, N.

AU - Griffith, P.

AU - Ilten, P.

AU - Kenyon, I. R.

AU - Lazzeroni, C.

AU - Mazurov, A.

AU - McCarthy, J.

AU - Parkinson, C. J.

AU - Pescatore, L.

AU - Popov, D.

AU - Watson, N. K.

PY - 2014/10/10

Y1 - 2014/10/10

N2 - A baryonic decay of the B+ c meson, B+ c → J/ψpp¯π+, is observed for the first time, with a significance of 7.3 standard deviations, in pp collision data collected with the LHCb detector and corresponding to an integrated luminosity of 3.0 fb-1 taken at center-of-mass energies of 7 and 8 TeV. With the B+ c → J/ψπ+ decay as the normalization channel, the ratio of branching fractions is measured to be B(B+ c → J/ψpp¯π+)/B(B+ c → J/ψπ+) = 0.143+0.039 -0.034(stat) ± 0.013(syst). The mass of the B+ c meson is determined as M(B+ c) = 6274.0 ± 1.8(stat) ± 0.4(syst) MeV/c2, using the B+ c → J/ψpp¯π+ channel.

AB - A baryonic decay of the B+ c meson, B+ c → J/ψpp¯π+, is observed for the first time, with a significance of 7.3 standard deviations, in pp collision data collected with the LHCb detector and corresponding to an integrated luminosity of 3.0 fb-1 taken at center-of-mass energies of 7 and 8 TeV. With the B+ c → J/ψπ+ decay as the normalization channel, the ratio of branching fractions is measured to be B(B+ c → J/ψpp¯π+)/B(B+ c → J/ψπ+) = 0.143+0.039 -0.034(stat) ± 0.013(syst). The mass of the B+ c meson is determined as M(B+ c) = 6274.0 ± 1.8(stat) ± 0.4(syst) MeV/c2, using the B+ c → J/ψpp¯π+ channel.

UR - https://www.scopus.com/pages/publications/84937644657

U2 - 10.1103/PhysRevLett.113.152003

DO - 10.1103/PhysRevLett.113.152003

M3 - Article

AN - SCOPUS:84937644657

SN - 0031-9007

VL - 113

JO - Physical Review Letters

JF - Physical Review Letters

IS - 15

M1 - 152003

ER -

First observation of a baryonic B+ c decay

Abstract

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First observation of a baryonic B⁺ _c decay