Measurement of the CKM angle γ using the B±→ D*h± channels

LHCb collaboration

doi:10.1007/JHEP12(2023)013

Measurement of the CKM angle γ using the B±→ D*h± channels

LHCb collaboration

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

Abstract

A measurement of the CP-violating observables from B ± ? D * K ± and B ± ? D * p ± decays is presented, where D *(D) is an admixture of D *0 and D¯ * 0 (D 0 and D¯) states and is reconstructed through the decay chains D * ? Dp 0 /? and D?KS0p+p-/KS0K+K- . The measurement is performed by analysing the signal yield variation across the D decay phase space and is independent of any amplitude model. The data sample used was collected by the LHCb experiment in proton-proton collisions and corresponds to a total integrated luminosity of 9 fb-1 at centre-of-mass energies of 7, 8 and 13 TeV. The CKM angle ? is determined to be (69-14+13)° using the measured CP-violating observables. The hadronic parameters rBD*K±,rBD*p±,dBD*K±,dBD*p± , which are the ratios and strong phase differences between favoured and suppressed B ± decays, are also reported. [Figure not available: see fulltext.]

Original language	English
Article number	13
Number of pages	32
Journal	Journal of High Energy Physics
Volume	2023
Issue number	12
DOIs	https://doi.org/10.1007/JHEP12(2023)013
Publication status	Published - 1 Dec 2023

Keywords

B Physics
CKM Angle Gamma
CP Violation
Hadron-Hadron Scattering

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10.1007/JHEP12(2023)013Licence: CC BY

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@article{b877776e410b4150aafe1258af1d6656,

title = "Measurement of the CKM angle γ using the B±→ D*h± channels",

abstract = "A measurement of the CP-violating observables from B ± ? D * K ± and B ± ? D * p ± decays is presented, where D *(D) is an admixture of D *0 and D¯ * 0 (D 0 and D¯) states and is reconstructed through the decay chains D * ? Dp 0 /? and D?KS0p+p-/KS0K+K- . The measurement is performed by analysing the signal yield variation across the D decay phase space and is independent of any amplitude model. The data sample used was collected by the LHCb experiment in proton-proton collisions and corresponds to a total integrated luminosity of 9 fb-1 at centre-of-mass energies of 7, 8 and 13 TeV. The CKM angle ? is determined to be (69-14+13)° using the measured CP-violating observables. The hadronic parameters rBD*K±,rBD*p±,dBD*K±,dBD*p± , which are the ratios and strong phase differences between favoured and suppressed B ± decays, are also reported. [Figure not available: see fulltext.]",

keywords = "B Physics, CKM Angle Gamma, CP Violation, Hadron-Hadron Scattering",

author = "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 P. Andreola 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 D. Bacher and {Bachiller Perea}, I. 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 {LHCb collaboration} and Marcel Merk and Chris Pawley and {de Vries}, Jacco and Keri Vos and {C{\'a}mpora P{\'e}rez}, {Daniel Hugo} and {da silva Bolognani}, Carolina and {Lucio Martinez}, Miriam and Davide Nicotra and Gerco Onderwater",

note = "Funding Information: 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); MCID/IFA (Romania); MICINN (Spain); SNSF and SER (Switzerland); NASU (Ukraine); STFC (United Kingdom); DOE NP and NSF (U.S.A.). 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 (U.S.A.). 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 Sklodowska-Curie Actions, ERC and NextGenerationEU (European Union); A*MIDEX, ANR, IPhU and Labex P2IO, and R{\'e}gion Auvergne-Rh{\^o}ne-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{\'o}n Talento, CM (Spain); SRC (Sweden); the Leverhulme Trust, the Royal Society and UKRI (United Kingdom). Funding Information: 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); MCID/IFA (Romania); MICINN (Spain); SNSF and SER (Switzerland); NASU (Ukraine); STFC (United Kingdom); DOE NP and NSF (U.S.A.). 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 (U.S.A.). 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 Sklodowska-Curie Actions, ERC and NextGenerationEU (European Union); A*MIDEX, ANR, IPhU and Labex P2IO, and R{\'e}gion Auvergne-Rh{\^o}ne-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{\'o}n Talento, CM (Spain); SRC (Sweden); the Leverhulme Trust, the Royal Society and UKRI (United Kingdom). Publisher Copyright: {\textcopyright} 2023, The Author(s).",

year = "2023",

month = dec,

day = "1",

doi = "10.1007/JHEP12(2023)013",

language = "English",

volume = "2023",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

publisher = "Springer Verlag",

number = "12",

}

TY - JOUR

T1 - Measurement of the CKM angle γ using the B±→ D*h± channels

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 - Andreola, P.

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 - Bacher, D.

AU - Bachiller Perea, I.

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 - LHCb collaboration

AU - Merk, Marcel

AU - Pawley, Chris

AU - de Vries, Jacco

AU - Vos, Keri

AU - Cámpora Pérez, Daniel Hugo

AU - da silva Bolognani, Carolina

AU - Lucio Martinez, Miriam

AU - Nicotra, Davide

AU - Onderwater, Gerco

N1 - Funding Information: 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); MCID/IFA (Romania); MICINN (Spain); SNSF and SER (Switzerland); NASU (Ukraine); STFC (United Kingdom); DOE NP and NSF (U.S.A.). 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 (U.S.A.). 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 Sklodowska-Curie Actions, ERC and NextGenerationEU (European Union); A*MIDEX, ANR, IPhU and Labex P2IO, and Région Auvergne-Rhône-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. Atracción Talento, CM (Spain); SRC (Sweden); the Leverhulme Trust, the Royal Society and UKRI (United Kingdom). Funding Information: 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); MCID/IFA (Romania); MICINN (Spain); SNSF and SER (Switzerland); NASU (Ukraine); STFC (United Kingdom); DOE NP and NSF (U.S.A.). 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 (U.S.A.). 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 Sklodowska-Curie Actions, ERC and NextGenerationEU (European Union); A*MIDEX, ANR, IPhU and Labex P2IO, and Région Auvergne-Rhône-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. Atracción Talento, CM (Spain); SRC (Sweden); the Leverhulme Trust, the Royal Society and UKRI (United Kingdom). Publisher Copyright: © 2023, The Author(s).

PY - 2023/12/1

Y1 - 2023/12/1

N2 - A measurement of the CP-violating observables from B ± ? D * K ± and B ± ? D * p ± decays is presented, where D *(D) is an admixture of D *0 and D¯ * 0 (D 0 and D¯) states and is reconstructed through the decay chains D * ? Dp 0 /? and D?KS0p+p-/KS0K+K- . The measurement is performed by analysing the signal yield variation across the D decay phase space and is independent of any amplitude model. The data sample used was collected by the LHCb experiment in proton-proton collisions and corresponds to a total integrated luminosity of 9 fb-1 at centre-of-mass energies of 7, 8 and 13 TeV. The CKM angle ? is determined to be (69-14+13)° using the measured CP-violating observables. The hadronic parameters rBD*K±,rBD*p±,dBD*K±,dBD*p± , which are the ratios and strong phase differences between favoured and suppressed B ± decays, are also reported. [Figure not available: see fulltext.]

AB - A measurement of the CP-violating observables from B ± ? D * K ± and B ± ? D * p ± decays is presented, where D *(D) is an admixture of D *0 and D¯ * 0 (D 0 and D¯) states and is reconstructed through the decay chains D * ? Dp 0 /? and D?KS0p+p-/KS0K+K- . The measurement is performed by analysing the signal yield variation across the D decay phase space and is independent of any amplitude model. The data sample used was collected by the LHCb experiment in proton-proton collisions and corresponds to a total integrated luminosity of 9 fb-1 at centre-of-mass energies of 7, 8 and 13 TeV. The CKM angle ? is determined to be (69-14+13)° using the measured CP-violating observables. The hadronic parameters rBD*K±,rBD*p±,dBD*K±,dBD*p± , which are the ratios and strong phase differences between favoured and suppressed B ± decays, are also reported. [Figure not available: see fulltext.]

KW - B Physics

KW - CKM Angle Gamma

KW - CP Violation

KW - Hadron-Hadron Scattering

U2 - 10.1007/JHEP12(2023)013

DO - 10.1007/JHEP12(2023)013

M3 - Article

SN - 1029-8479

VL - 2023

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 12

M1 - 13

ER -

Measurement of the CKM angle <i>γ</i> using the <i>B</i><SUP>±</SUP><i>→ D</i><SUP>*</SUP><i>h</i><SUP>±</SUP> channels

Abstract

Keywords

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