Updated search for B+c decays to two charm mesons

K. De Bruyn; C. J. G. Onderwater; M. van Veghel; LHCb Collaboration

doi:10.1007/JHEP12(2021)117

Updated search for B+c decays to two charm mesons

K. De Bruyn, C. J. G. Onderwater, M. van Veghel, LHCb Collaboration

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Abstract

A data set corresponding to an integrated luminosity of 9 fb−1 of proton-proton collisions collected by the LHCb experiment has been analysed to search for B+c→D(∗)+(s)(---)D(∗)0Bc+→D(s)(∗)+(---)D(∗)0 decays. The decays are fully or partially reconstructed, where one or two missing neutral pions or photons from the decay of an excited charm meson are allowed. Upper limits for the branching fractions, normalised to B+ decays to final states with similar topologies, are obtained for sixteen B+cBc+ decay modes. For the decay B+c→D+sD¯¯¯¯0Bc+→Ds+D¯0, an excess with a significance of 3.4 standard deviations is found.

Original language	English
Article number	117
Number of pages	23
Journal	Journal of High Energy Physics
Volume	2021
Issue number	12
DOIs	https://doi.org/10.1007/JHEP12(2021)117
Publication status	Published - 17-Dec-2021

Keywords

B physics
Branching fraction
Flavor physics
Hadron-Hadron scattering (experiments)

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Updated search for B+c decays to two charm mesonsFinal publisher's version, 939 KBLicence: CC BY

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@article{456ef9b73cbd4c85b03d357f39fb412f,

title = "Updated search for B+c decays to two charm mesons",

abstract = "A data set corresponding to an integrated luminosity of 9 fb−1 of proton-proton collisions collected by the LHCb experiment has been analysed to search for B+c→D(∗)+(s)(---)D(∗)0Bc+→D(s)(∗)+(---)D(∗)0 decays. The decays are fully or partially reconstructed, where one or two missing neutral pions or photons from the decay of an excited charm meson are allowed. Upper limits for the branching fractions, normalised to B+ decays to final states with similar topologies, are obtained for sixteen B+cBc+ decay modes. For the decay B+c→D+sD¯¯¯¯0Bc+→Ds+D¯0, an excess with a significance of 3.4 standard deviations is found.",

keywords = "B physics, Branching fraction, Flavor physics, Hadron-Hadron scattering (experiments)",

author = "R. Aaij and B. Adeva and M. Adinolfi and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and L. Dufour and M. Mulder and \{De Bruyn\}, K. and Onderwater, \{C. J. G.\} and A. Pellegrino and S. Tolk and \{van Veghel\}, M. and \{LHCb Collaboration\}",

year = "2021",

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day = "17",

doi = "10.1007/JHEP12(2021)117",

language = "English",

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T1 - Updated search for B+c decays to two charm mesons

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

AU - Dufour, L.

AU - Mulder, M.

AU - De Bruyn, K.

AU - Onderwater, C. J. G.

AU - Pellegrino, A.

AU - Tolk, S.

AU - van Veghel, M.

AU - LHCb Collaboration

PY - 2021/12/17

Y1 - 2021/12/17

N2 - A data set corresponding to an integrated luminosity of 9 fb−1 of proton-proton collisions collected by the LHCb experiment has been analysed to search for B+c→D(∗)+(s)(---)D(∗)0Bc+→D(s)(∗)+(---)D(∗)0 decays. The decays are fully or partially reconstructed, where one or two missing neutral pions or photons from the decay of an excited charm meson are allowed. Upper limits for the branching fractions, normalised to B+ decays to final states with similar topologies, are obtained for sixteen B+cBc+ decay modes. For the decay B+c→D+sD¯¯¯¯0Bc+→Ds+D¯0, an excess with a significance of 3.4 standard deviations is found.

AB - A data set corresponding to an integrated luminosity of 9 fb−1 of proton-proton collisions collected by the LHCb experiment has been analysed to search for B+c→D(∗)+(s)(---)D(∗)0Bc+→D(s)(∗)+(---)D(∗)0 decays. The decays are fully or partially reconstructed, where one or two missing neutral pions or photons from the decay of an excited charm meson are allowed. Upper limits for the branching fractions, normalised to B+ decays to final states with similar topologies, are obtained for sixteen B+cBc+ decay modes. For the decay B+c→D+sD¯¯¯¯0Bc+→Ds+D¯0, an excess with a significance of 3.4 standard deviations is found.

KW - B physics

KW - Branching fraction

KW - Flavor physics

KW - Hadron-Hadron scattering (experiments)

U2 - 10.1007/JHEP12(2021)117

DO - 10.1007/JHEP12(2021)117

M3 - Article

SN - 1029-8479

VL - 2021

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 12

M1 - 117

ER -

Updated search for B+c decays to two charm mesons

Abstract

Keywords

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