Measurement of CP asymmetries and branching fraction ratios of B− decays to two charm mesons

The LHCb collaboration

doi:10.1007/JHEP09(2023)202

Measurement of CP asymmetries and branching fraction ratios of B⁻ decays to two charm mesons

The LHCb collaboration

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Resumen

The CP asymmetries of seven B⁻ decays to two charm mesons are measured using data corresponding to an integrated luminosity of 9 fb⁻¹ of proton-proton collisions collected by the LHCb experiment. Decays involving a D^*0 or (Formula Presented.) meson are analysed by reconstructing only the D⁰ or (Formula Presented.) decay products. This paper presents the first measurement of (Formula Presented.) and (Formula Presented.), and the most precise measurement of the other five CP asymmetries. There is no evidence of CP violation in any of the analysed decays. Additionally, two ratios between branching fractions of selected decays are measured.

Idioma original	Inglés
Número de artículo	202
Publicación	Journal of High Energy Physics
Volumen	2023
N.º	9
DOI	https://doi.org/10.1007/JHEP09(2023)202
Estado	Publicada - set. 2023
Publicado de forma externa	Sí

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@article{9aead5958073470ba3b8ab740f2537a6,

title = "Measurement of CP asymmetries and branching fraction ratios of B− decays to two charm mesons",

abstract = "The CP asymmetries of seven B− decays to two charm mesons are measured using data corresponding to an integrated luminosity of 9 fb−1 of proton-proton collisions collected by the LHCb experiment. Decays involving a D*0 or (Formula Presented.) meson are analysed by reconstructing only the D0 or (Formula Presented.) decay products. This paper presents the first measurement of (Formula Presented.) and (Formula Presented.), and the most precise measurement of the other five CP asymmetries. There is no evidence of CP violation in any of the analysed decays. Additionally, two ratios between branching fractions of selected decays are measured.",

keywords = "Branching fraction, CP Violation, Flavour Physics, 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 M. Barbetti and Barbosa, {I. R.} and Milanes, {D. A.}",

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

year = "2023",

month = sep,

doi = "10.1007/JHEP09(2023)202",

language = "English",

volume = "2023",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

number = "9",

}

TY - JOUR

T1 - Measurement of CP asymmetries and branching fraction ratios of B− decays to two charm mesons

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 - Barbetti, M.

AU - Barbosa, I. R.

AU - Milanes, D. A.

PY - 2023/9

Y1 - 2023/9

N2 - The CP asymmetries of seven B− decays to two charm mesons are measured using data corresponding to an integrated luminosity of 9 fb−1 of proton-proton collisions collected by the LHCb experiment. Decays involving a D*0 or (Formula Presented.) meson are analysed by reconstructing only the D0 or (Formula Presented.) decay products. This paper presents the first measurement of (Formula Presented.) and (Formula Presented.), and the most precise measurement of the other five CP asymmetries. There is no evidence of CP violation in any of the analysed decays. Additionally, two ratios between branching fractions of selected decays are measured.

AB - The CP asymmetries of seven B− decays to two charm mesons are measured using data corresponding to an integrated luminosity of 9 fb−1 of proton-proton collisions collected by the LHCb experiment. Decays involving a D*0 or (Formula Presented.) meson are analysed by reconstructing only the D0 or (Formula Presented.) decay products. This paper presents the first measurement of (Formula Presented.) and (Formula Presented.), and the most precise measurement of the other five CP asymmetries. There is no evidence of CP violation in any of the analysed decays. Additionally, two ratios between branching fractions of selected decays are measured.

KW - Branching fraction

KW - CP Violation

KW - Flavour Physics

KW - Hadron-Hadron Scattering

UR - http://www.scopus.com/inward/record.url?scp=85183691626&partnerID=8YFLogxK

U2 - 10.1007/JHEP09(2023)202

DO - 10.1007/JHEP09(2023)202

M3 - Article

AN - SCOPUS:85183691626

SN - 1126-6708

VL - 2023

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 9

M1 - 202