Measurement of the CKM angle ? in B ± ? DK ± and B ± ? Dp ± decays with D ? KS0 h + h -

LHCb collaboration

doi:10.1007/JHEP02(2021)169

Measurement of the CKM angle ? in B ^± ? DK ^± and B ^± ? Dp ^± decays with D ? KS0 h ⁺ h ^-

LHCb collaboration

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

Abstract

A measurement of CP-violating observables is performed using the decays B± ? DK± and B± ? Dp±, where the D meson is reconstructed in one of the self-conjugate three-body final states KS0p+p- and KS0K+K- (commonly denoted KS0h+h-). The decays are analysed in bins of the D-decay phase space, leading to a measurement that is independent of the modelling of the D-decay amplitude. The observables are inter- preted in terms of the CKM angle ?. Using a data sample corresponding to an integrated luminosity of 9 fb-1 collected in proton-proton collisions at centre-of mass energies of 7, 8, and 13 TeV with the LHCb experiment, ? is measured to be (68.7-5.1+5.2)°. The hadronic parameters rBDK,rBDp,dBDK,anddBDp, which are the ratios and strong-phase differences of the suppressed and favoured B± decays, are also reported. [Figure not available: see fulltext.]

Original language	English
Article number	169
Number of pages	36
Journal	Journal of High Energy Physics
Volume	2021
Issue number	2
DOIs	https://doi.org/10.1007/JHEP02(2021)169
Publication status	Published - 19 Feb 2021

Keywords

B physics
CKM angle gamma
CP violation
Flavor physics
Hadron-Hadron scattering (experiments)

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10.1007/JHEP02(2021)169Licence: CC BY

Cite this

@article{03f1ec9c53f34083bd7ac708e8f66d19,

title = "Measurement of the CKM angle ? in B ± ? DK ± and B ± ? Dp ± decays with D ? KS0 h + h -",

abstract = "A measurement of CP-violating observables is performed using the decays B± ? DK± and B± ? Dp±, where the D meson is reconstructed in one of the self-conjugate three-body final states KS0p+p- and KS0K+K- (commonly denoted KS0h+h-). The decays are analysed in bins of the D-decay phase space, leading to a measurement that is independent of the modelling of the D-decay amplitude. The observables are inter- preted in terms of the CKM angle ?. Using a data sample corresponding to an integrated luminosity of 9 fb-1 collected in proton-proton collisions at centre-of mass energies of 7, 8, and 13 TeV with the LHCb experiment, ? is measured to be (68.7-5.1+5.2)°. The hadronic parameters rBDK,rBDp,dBDK,anddBDp, which are the ratios and strong-phase differences of the suppressed and favoured B± decays, are also reported. [Figure not available: see fulltext.]",

keywords = "B physics, CKM angle gamma, CP violation, Flavor physics, Hadron-Hadron scattering (experiments)",

author = "R. Aaij and {Abell{\'a}n Beteta}, C. and T. Ackernley and B. Adeva and M. Adinolfi and H. Afsharnia and Aidala, {C. A.} and S. Aiola and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and {Alfonso Albero}, A. and Z. Aliouche and G. Alkhazov and {Alvarez Cartelle}, P. and S. Amato and Y. Amhis and L. An and L. Anderlini and A. Andreianov and M. Andreotti and F. Archilli and A. Artamonov and M. Artuso and K. Arzymatov and E. Aslanides and M. Atzeni and B. Audurier and S. Bachmann and M. Bachmayer and Back, {J. J.} and S. Baker and {Baladron Rodriguez}, P. and V. Balagura and W. Baldini and {Baptista Leite}, J. and Barlow, {R. J.} and S. Barsuk and W. Barter and M. Bartolini and F. Baryshnikov and Basels, {J. M.} and G. Bassi and B. Batsukh and A. Battig and A. Bay and M. Becker and F. Bedeschi and {LHCb collaboration} and Marcel Merk and {de Vries}, Jacco and Chris Pawley",

note = "Publisher Copyright: {\textcopyright} 2021, The Author(s).",

year = "2021",

month = feb,

day = "19",

doi = "10.1007/JHEP02(2021)169",

language = "English",

volume = "2021",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

publisher = "Springer Verlag",

number = "2",

}

TY - JOUR

T1 - Measurement of the CKM angle ? in B ± ? DK ± and B ± ? Dp ± decays with D ? KS0 h + h -

AU - Aaij, R.

AU - Abellán Beteta, C.

AU - Ackernley, T.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Afsharnia, H.

AU - Aidala, C. A.

AU - Aiola, S.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alfonso Albero, A.

AU - Aliouche, Z.

AU - Alkhazov, G.

AU - Alvarez Cartelle, P.

AU - Amato, S.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andreianov, A.

AU - Andreotti, M.

AU - Archilli, F.

AU - Artamonov, A.

AU - Artuso, M.

AU - Arzymatov, K.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Audurier, B.

AU - Bachmann, S.

AU - Bachmayer, M.

AU - Back, J. J.

AU - Baker, S.

AU - Baladron Rodriguez, P.

AU - Balagura, V.

AU - Baldini, W.

AU - Baptista Leite, J.

AU - Barlow, R. J.

AU - Barsuk, S.

AU - Barter, W.

AU - Bartolini, M.

AU - Baryshnikov, F.

AU - Basels, J. M.

AU - Bassi, G.

AU - Batsukh, B.

AU - Battig, A.

AU - Bay, A.

AU - Becker, M.

AU - Bedeschi, F.

AU - LHCb collaboration

AU - Merk, Marcel

AU - de Vries, Jacco

AU - Pawley, Chris

PY - 2021/2/19

Y1 - 2021/2/19

N2 - A measurement of CP-violating observables is performed using the decays B± ? DK± and B± ? Dp±, where the D meson is reconstructed in one of the self-conjugate three-body final states KS0p+p- and KS0K+K- (commonly denoted KS0h+h-). The decays are analysed in bins of the D-decay phase space, leading to a measurement that is independent of the modelling of the D-decay amplitude. The observables are inter- preted in terms of the CKM angle ?. Using a data sample corresponding to an integrated luminosity of 9 fb-1 collected in proton-proton collisions at centre-of mass energies of 7, 8, and 13 TeV with the LHCb experiment, ? is measured to be (68.7-5.1+5.2)°. The hadronic parameters rBDK,rBDp,dBDK,anddBDp, which are the ratios and strong-phase differences of the suppressed and favoured B± decays, are also reported. [Figure not available: see fulltext.]

AB - A measurement of CP-violating observables is performed using the decays B± ? DK± and B± ? Dp±, where the D meson is reconstructed in one of the self-conjugate three-body final states KS0p+p- and KS0K+K- (commonly denoted KS0h+h-). The decays are analysed in bins of the D-decay phase space, leading to a measurement that is independent of the modelling of the D-decay amplitude. The observables are inter- preted in terms of the CKM angle ?. Using a data sample corresponding to an integrated luminosity of 9 fb-1 collected in proton-proton collisions at centre-of mass energies of 7, 8, and 13 TeV with the LHCb experiment, ? is measured to be (68.7-5.1+5.2)°. The hadronic parameters rBDK,rBDp,dBDK,anddBDp, which are the ratios and strong-phase differences of the suppressed and favoured B± decays, are also reported. [Figure not available: see fulltext.]

KW - B physics

KW - CKM angle gamma

KW - CP violation

KW - Flavor physics

KW - Hadron-Hadron scattering (experiments)

UR - http://www.scopus.com/inward/record.url?scp=85101405552&partnerID=8YFLogxK

U2 - 10.1007/JHEP02(2021)169

DO - 10.1007/JHEP02(2021)169

M3 - Article

SN - 1029-8479

VL - 2021

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 2

M1 - 169

ER -