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

(Astro)-Particles Physics

Research output: Contribution to Journal › Article › Academic › peer-review

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
Pages (from-to)	1-26
Number of pages	26
Journal	Journal of High Energy Physics
Volume	2023
Issue number	10
Early online date	20 Oct 2023
DOIs	https://doi.org/10.1007/JHEP10(2023)123
Publication status	Published - Oct 2023

Bibliographical note

Publisher Copyright:
© The Author(s) 2023.

Funding

We express our gratitude to our colleagues in the CERN accelerator departments for the excellent performance of the LHC. We thank the technical and administrative staff at the LHCb institutes. We acknowledge support from CERN and from the national agencies: CAPES, CNPq, FAPERJ and FINEP (Brazil); MOST and NSFC (China); CNRS/IN2P3 (France); BMBF, DFG and MPG (Germany); INFN (Italy); NWO (Netherlands); MNiSW and NCN (Poland); MEN/IFA (Romania); MICINN (Spain); SNSF and SER (Switzerland); NASU (Ukraine); STFC (United Kingdom); DOE NP and NSF (USA). We acknowledge the computing resources that are provided by CERN, IN2P3 (France), KIT and DESY (Germany), INFN (Italy), SURF (Netherlands), PIC (Spain), GridPP (United Kingdom), CSCS (Switzerland), IFIN-HH (Romania), CBPF (Brazil), Polish WLCG (Poland) and NERSC (USA). We are indebted to the communities behind the multiple open-source software packages on which we depend. Individual groups or members have received support from ARC and ARDC (Australia); Minciencias (Colombia); AvH Foundation (Germany); EPLANET, Marie Sk\u0142odowska-Curie Actions, ERC and NextGenerationEU (European Union); A*MIDEX, ANR, IPhU and Labex P2IO, and R\u00E9gion Auvergne-Rh\u00F4ne-Alpes (France); Key Research Program of Frontier Sciences of CAS, CAS PIFI, CAS CCEPP, Fundamental Research Funds for the Central Universities, and Sci. & Tech. Program of Guangzhou (China); GVA, XuntaGal, GENCAT, Inditex, InTalent and Prog. Atracci\u00F3n Talento, CM (Spain); SRC (Sweden); the Leverhulme Trust, the Royal Society and UKRI (United Kingdom).

Funders	Funder number
Institutul National de Cercetare-Dezvoltare pentru Fizica si Inginerie Nucleara 'Horia Hulubei'
Agence Nationale de la Recherche
Australian Research Council
Australian Research Data Commons
Stockholm Resilience Centre, Stockholm University
National Academy of Sciences of Ukraine
Narodowe Centrum Nauki
National Science Foundation
Institut national de physique nucléaire et de physique des particules
Science and Technology Facilities Council
H2020 Marie Skłodowska-Curie Actions
NextGenerationEU
Automotive Research Center
Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Ministerio de Ciencia e Innovación
Ministry of Science and Technology, Taiwan
Program of Guangzhou
Leverhulme Trust
SURF
Instituto Nazionale di Fisica Nucleare
National Energy Research Scientific Computing Center
Financiadora de Estudos e Projetos
Centre National de la Recherche Scientifique
Bundesministerium für Bildung und Forschung
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Karlsruhe Institute of Technology
Deutsche Forschungsgemeinschaft
Région Auvergne-Rhône-Alpes
CAS CCEPP
GridPP
Deutsches Elektronen-Synchrotron
Chinese Academy of Sciences
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
Key Research Program of Frontier Sciences of CAS
Royal Society
Sociedad Española de Reumatología
European Research Council
EPLANET
Ministerstwo Edukacji i Nauki
Generalitat Valenciana
CERN
Nuclear Physics
Fundamental Research Funds for the Central Universities
Alexander von Humboldt-Stiftung
UK Research and Innovation
National Natural Science Foundation of China

Keywords

B Physics
Branching fraction
CKM Angle Gamma
Hadron-Hadron Scattering

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10.1007/JHEP10(2023)123

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Cite this

@article{f0d134ea3bd74781a1c9c7908ee36832,

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) × 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",

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Wilkinson and Wilkinson, {M. K.} and I. Williams and M. Williams and Williams, {M. R.J.} and R. Williams and Wilson, {F. F.} and W. Wislicki and M. Witek and L. Witola and Wong, {C. P.} and G. Wormser and Wotton, {S. A.} and H. Wu and J. Wu and Y. Wu and K. Wyllie and Z. Xiang and Y. Xie and A. Xu and J. Xu and L. Xu and L. Xu and M. Xu and Q. Xu and Z. Xu and Z. Xu and Z. Xu and D. Yang and S. Yang and X. Yang and Y. Yang and Z. Yang and Z. Yang and V. Yeroshenko and H. Yeung and H. Yin and J. Yu and X. Yuan and E. Zaffaroni and M. Zavertyaev and M. Zdybal and M. Zeng and C. Zhang and D. Zhang and J. Zhang and L. Zhang and S. Zhang and S. Zhang and Y. Zhang and Y. Zhang and Y. Zhao and A. Zharkova and A. Zhelezov and Y. Zheng and T. Zhou and X. Zhou and Y. Zhou and V. Zhovkovska and X. Zhu and X. Zhu and Z. Zhu and V. Zhukov and J. Zhuo and Q. Zou and S. Zucchelli and D. Zuliani and G. Zunica and {The LHCb Collaboration}",

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

year = "2023",

month = oct,

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

language = "English",

volume = "2023",

pages = "1--26",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer Verlag",

number = "10",

}

TY - JOUR

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

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AU - The LHCb Collaboration

PY - 2023/10

Y1 - 2023/10

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

UR - http://www.scopus.com/inward/record.url?scp=85193967273&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85193967273&partnerID=8YFLogxK

U2 - 10.1007/JHEP10(2023)123

DO - 10.1007/JHEP10(2023)123

M3 - Article

AN - SCOPUS:85193967273

SN - 1126-6708

VL - 2023

SP - 1

EP - 26

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 10

M1 - 123

ER -