Evidence for the decays B0→D ̄(*)0φ and updated measurements of the branching fractions of the Bs0→D ̄(*)0φ decays

The LHCb collaboration

doi:10.1007/JHEP10(2023)123

Evidence for the decays B⁰→D ̄^()0φ and updated measurements of the branching fractions of the Bs0→D ̄^()0φ decays

The LHCb collaboration

University of Modena and Reggio Emilia
Science Park 105
University of Warwick
Physik-Institut der Universität Zürich
University of Liverpool
Universidade de Santiago de Compostela
University of Bristol
Department of Physics and Astronomy
Uppsala University
Clermont-Auvergne University
European Organization for Nuclear Research
University of Michigan, Ann Arbor
University of Cincinnati
LNF-INFN
Fakultät Physik
University of Dortmund
SUPA
University of Glasgow
University of Barcelona
Department of Physics and Astronomy
University of Manchester
University of Cambridge
Sorbonne Université
Instituto de Biofisica da UFRJ
Université Paris-Saclay
State Key Laboratory of Nuclear Physics and Technology
Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
Sezione INFN di Ferrara
Syracuse University
University of Chinese Academy of Sciences
INFN Roma Tor Vergata
University of Rome “Tor Vergata”
Aix-Marseille Université
Ip Paris
Laboratoire de Physique des Particules
University of Heidelberg
Institute of Physics
ENAC-IIC-GEL
Centro Brasileiro de Pesquisas Fisicas

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

2 Citations (Scopus)

Abstract

Evidence for the decays B⁰→D¯⁰ϕ and B⁰→D¯^*0ϕ is reported with a significance of 3.6 σ and 4.3 σ, respectively. The analysis employs pp collision data at centre-of-mass energies s = 7, 8 and 13 TeV collected by the LHCb detector and corresponding to an integrated luminosity of 9 fb⁻¹. The branching fractions are measured to be (Formula presented.) In these results, the first uncertainty is statistical, the second systematic, and the third is related to the branching fraction of the B⁰→D¯⁰K⁺K⁻ decay, used for normalisation. By combining the branching fractions of the decays B⁰ → D¯^∗0ϕ and B⁰ → D¯^∗0ω, the ω-ϕ mixing angle δ is constrained to be tan²δ = (3.6 ± 0.7 ± 0.4) × 10⁻³, where the first uncertainty is statistical and the second systematic. An updated measurement of the branching fractions of the B_s⁰ → D¯^∗0ϕ decays, which can be used to determine the CKM angle γ, leads to (Formula presented.) (Figure presented.).

Original language	English
Article number	123
Journal	Journal of High Energy Physics
Volume	2023
Issue number	10
DOIs	https://doi.org/10.1007/JHEP10(2023)123
Publication status	Published - 1 Oct 2023

Keywords

B Physics
Branching fraction
CKM Angle Gamma
Hadron-Hadron Scattering

Access to Document

10.1007/JHEP10(2023)123

Cite this

@article{e9bdea2fa3c04364bad17d2f546fc9ea,

title = "Evidence for the decays B0→D{\= }(*)0φ and updated measurements of the branching fractions of the Bs0→D{\= }(*)0φ decays",

abstract = "Evidence for the decays B0→D¯0ϕ and B0→D¯*0ϕ is reported with a significance of 3.6 σ and 4.3 σ, respectively. The analysis employs pp collision data at centre-of-mass energies s = 7, 8 and 13 TeV collected by the LHCb detector and corresponding to an integrated luminosity of 9 fb−1. The branching fractions are measured to be (Formula presented.) In these results, the first uncertainty is statistical, the second systematic, and the third is related to the branching fraction of the B0→D¯0K+K− decay, used for normalisation. By combining the branching fractions of the decays B0 → D¯∗0ϕ and B0 → D¯∗0ω, the ω-ϕ mixing angle δ is constrained to be tan2δ = (3.6 ± 0.7 ± 0.4) {\texttimes} 10−3, where the first uncertainty is statistical and the second systematic. An updated measurement of the branching fractions of the Bs0 → D¯∗0ϕ decays, which can be used to determine the CKM angle γ, leads to (Formula presented.) (Figure presented.).",

keywords = "B Physics, Branching fraction, CKM Angle Gamma, Hadron-Hadron Scattering",

author = "\{The LHCb collaboration\} and R. Aaij and Abdelmotteleb, \{A. S.W.\} and \{Abellan Beteta\}, C. and F. Abudin{\'e}n and T. Ackernley and B. Adeva and M. Adinolfi and P. Adlarson and H. Afsharnia and C. Agapopoulou and Aidala, \{C. A.\} and Z. Ajaltouni and S. Akar and K. Akiba and P. Albicocco and J. Albrecht and F. Alessio and M. Alexander and \{Alfonso Albero\}, A. and Z. Aliouche and \{Alvarez Cartelle\}, P. and R. Amalric and S. Amato and Amey, \{J. L.\} and Y. Amhis and L. An and L. Anderlini and M. Andersson and A. Andreianov and M. Andreotti and D. Andreou and D. Ao and F. Archilli and A. Artamonov and M. Artuso and E. Aslanides and M. Atzeni and B. Audurier and \{Bachiller Perea\}, \{I. B.\} and S. Bachmann and M. Bachmayer and Back, \{J. J.\} and A. Bailly-reyre and \{Baladron Rodriguez\}, P. and V. Balagura and W. Baldini and \{Baptista de Souza Leite\}, J. and F. Fleuret and E. Maurice and Niel, \{E. M.\}",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2023.",

year = "2023",

month = oct,

day = "1",

doi = "10.1007/JHEP10(2023)123",

language = "English",

volume = "2023",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer Verlag",

number = "10",

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TY - JOUR

T1 - Evidence for the decays B0→D ̄(*)0φ and updated measurements of the branching fractions of the Bs0→D ̄(*)0φ decays

AU - The LHCb collaboration

AU - Aaij, R.

AU - Abdelmotteleb, A. S.W.

AU - Abellan Beteta, C.

AU - Abudinén, F.

AU - Ackernley, T.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Adlarson, P.

AU - Afsharnia, H.

AU - Agapopoulou, C.

AU - Aidala, C. A.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Akiba, K.

AU - Albicocco, P.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alfonso Albero, A.

AU - Aliouche, Z.

AU - Alvarez Cartelle, P.

AU - Amalric, R.

AU - Amato, S.

AU - Amey, J. L.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andersson, M.

AU - Andreianov, A.

AU - Andreotti, M.

AU - Andreou, D.

AU - Ao, D.

AU - Archilli, F.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Audurier, B.

AU - Bachiller Perea, I. B.

AU - Bachmann, S.

AU - Bachmayer, M.

AU - Back, J. J.

AU - Bailly-reyre, A.

AU - Baladron Rodriguez, P.

AU - Balagura, V.

AU - Baldini, W.

AU - Baptista de Souza Leite, J.

AU - Fleuret, F.

AU - Maurice, E.

AU - Niel, E. M.

PY - 2023/10/1

Y1 - 2023/10/1

N2 - Evidence for the decays B0→D¯0ϕ and B0→D¯*0ϕ is reported with a significance of 3.6 σ and 4.3 σ, respectively. The analysis employs pp collision data at centre-of-mass energies s = 7, 8 and 13 TeV collected by the LHCb detector and corresponding to an integrated luminosity of 9 fb−1. The branching fractions are measured to be (Formula presented.) In these results, the first uncertainty is statistical, the second systematic, and the third is related to the branching fraction of the B0→D¯0K+K− decay, used for normalisation. By combining the branching fractions of the decays B0 → D¯∗0ϕ and B0 → D¯∗0ω, the ω-ϕ mixing angle δ is constrained to be tan2δ = (3.6 ± 0.7 ± 0.4) × 10−3, where the first uncertainty is statistical and the second systematic. An updated measurement of the branching fractions of the Bs0 → D¯∗0ϕ decays, which can be used to determine the CKM angle γ, leads to (Formula presented.) (Figure presented.).

AB - Evidence for the decays B0→D¯0ϕ and B0→D¯*0ϕ is reported with a significance of 3.6 σ and 4.3 σ, respectively. The analysis employs pp collision data at centre-of-mass energies s = 7, 8 and 13 TeV collected by the LHCb detector and corresponding to an integrated luminosity of 9 fb−1. The branching fractions are measured to be (Formula presented.) In these results, the first uncertainty is statistical, the second systematic, and the third is related to the branching fraction of the B0→D¯0K+K− decay, used for normalisation. By combining the branching fractions of the decays B0 → D¯∗0ϕ and B0 → D¯∗0ω, the ω-ϕ mixing angle δ is constrained to be tan2δ = (3.6 ± 0.7 ± 0.4) × 10−3, where the first uncertainty is statistical and the second systematic. An updated measurement of the branching fractions of the Bs0 → D¯∗0ϕ decays, which can be used to determine the CKM angle γ, leads to (Formula presented.) (Figure presented.).

KW - B Physics

KW - Branching fraction

KW - CKM Angle Gamma

KW - Hadron-Hadron Scattering

U2 - 10.1007/JHEP10(2023)123

DO - 10.1007/JHEP10(2023)123

M3 - Article

AN - SCOPUS:85193967273

SN - 1126-6708

VL - 2023

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 10

M1 - 123