Simultaneous determination of CKM angle γ and charm mixing parameters

LHCb collaboration; Matthew W. Kenzie

doi:10.1007/JHEP12(2021)141

Simultaneous determination of CKM angle γ and charm mixing parameters

LHCb collaboration, Matthew W. Kenzie^*

^*Corresponding author for this work

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

10 Citations (Web of Science)

Abstract

A combination of measurements sensitive to the CP violation angle gamma of the Cabibbo-Kobayashi-Maskawa unitarity triangle and to the charm mixing parameters that describe oscillations between D-0 and (D) over bar (0) mesons is performed. Results from the charm and beauty sectors, based on data collected with the LHCb detector at CERN's Large Hadron Collider, are combined for the first time. This method provides an improvement on the precision of the charm mixing parameter y by a factor of two with respect to the current world average. The charm mixing parameters are determined to be x = (0.400(-0.053)(+0.052))% and y = (0.630(-0.030)(+0.033))%. The angle gamma is found to be gamma = (65.4(-4.2)(+3.8))degrees and is the most precise determination from a single experiment.

Original language	English
Article number	141
Number of pages	32
Journal	Journal of High Energy Physics
Issue number	12
DOIs	https://doi.org/10.1007/JHEP12(2021)141
Publication status	Published - 21 Dec 2021

Keywords

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

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10.1007/JHEP12(2021)141Licence: CC BY

Cite this

@article{eacb40d12d0941078a342323594cf039,

title = "Simultaneous determination of CKM angle γ and charm mixing parameters",

abstract = "A combination of measurements sensitive to the CP violation angle gamma of the Cabibbo-Kobayashi-Maskawa unitarity triangle and to the charm mixing parameters that describe oscillations between D-0 and (D) over bar (0) mesons is performed. Results from the charm and beauty sectors, based on data collected with the LHCb detector at CERN's Large Hadron Collider, are combined for the first time. This method provides an improvement on the precision of the charm mixing parameter y by a factor of two with respect to the current world average. The charm mixing parameters are determined to be x = (0.400(-0.053)(+0.052))% and y = (0.630(-0.030)(+0.033))%. The angle gamma is found to be gamma = (65.4(-4.2)(+3.8))degrees and is the most precise determination from a single experiment.",

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

author = "R. Aaij and A.S.W. Abdelmotteleb and C.A. Beteta and F. Abudinen and T. Ackernley and B. Adeva and M. Adinolfi and H. Afsharnia and C. Agapopoulou and C.A. Aidala and S. Aiola and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and A.A. Albero and Z. Aliouche and G. Alkhazov and P.A. Cartelle and S. Amato and J.L. Amey 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 J.J. Back and P.B. Rodriguez and V. Balagura and W. Baldini and J.B. Leite and M. Barbetti and R.J. Barlow and S. Barsuk and W. Barter and M. Bartolini and {LHCb collaboration} and {de Vries}, J.A. and M. Merk and C.J. Pawley and K. Vos and Kenzie, {Matthew W.}",

year = "2021",

month = dec,

day = "21",

doi = "10.1007/JHEP12(2021)141",

language = "English",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

publisher = "Springer Verlag",

number = "12",

}

TY - JOUR

T1 - Simultaneous determination of CKM angle γ and charm mixing parameters

AU - Aaij, R.

AU - Abdelmotteleb, A.S.W.

AU - Beteta, C.A.

AU - Abudinen, F.

AU - Ackernley, T.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Afsharnia, H.

AU - Agapopoulou, C.

AU - Aidala, C.A.

AU - Aiola, S.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Albero, A.A.

AU - Aliouche, Z.

AU - Alkhazov, G.

AU - Cartelle, P.A.

AU - Amato, S.

AU - Amey, J.L.

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 - Rodriguez, P.B.

AU - Balagura, V.

AU - Baldini, W.

AU - Leite, J.B.

AU - Barbetti, M.

AU - Barlow, R.J.

AU - Barsuk, S.

AU - Barter, W.

AU - Bartolini, M.

AU - LHCb collaboration

AU - de Vries, J.A.

AU - Merk, M.

AU - Pawley, C.J.

AU - Vos, K.

AU - Kenzie, Matthew W.

PY - 2021/12/21

Y1 - 2021/12/21

N2 - A combination of measurements sensitive to the CP violation angle gamma of the Cabibbo-Kobayashi-Maskawa unitarity triangle and to the charm mixing parameters that describe oscillations between D-0 and (D) over bar (0) mesons is performed. Results from the charm and beauty sectors, based on data collected with the LHCb detector at CERN's Large Hadron Collider, are combined for the first time. This method provides an improvement on the precision of the charm mixing parameter y by a factor of two with respect to the current world average. The charm mixing parameters are determined to be x = (0.400(-0.053)(+0.052))% and y = (0.630(-0.030)(+0.033))%. The angle gamma is found to be gamma = (65.4(-4.2)(+3.8))degrees and is the most precise determination from a single experiment.

AB - A combination of measurements sensitive to the CP violation angle gamma of the Cabibbo-Kobayashi-Maskawa unitarity triangle and to the charm mixing parameters that describe oscillations between D-0 and (D) over bar (0) mesons is performed. Results from the charm and beauty sectors, based on data collected with the LHCb detector at CERN's Large Hadron Collider, are combined for the first time. This method provides an improvement on the precision of the charm mixing parameter y by a factor of two with respect to the current world average. The charm mixing parameters are determined to be x = (0.400(-0.053)(+0.052))% and y = (0.630(-0.030)(+0.033))%. The angle gamma is found to be gamma = (65.4(-4.2)(+3.8))degrees and is the most precise determination from a single experiment.

KW - B physics

KW - Charm physics

KW - CKM angle gamma

KW - CP violation

KW - Hadron-Hadron scattering (experiments)

KW - PHASE

U2 - 10.1007/JHEP12(2021)141

DO - 10.1007/JHEP12(2021)141

M3 - Article

SN - 1029-8479

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 12

M1 - 141

ER -