Simultaneous determination of CKM angle γ and charm mixing parameters

Journal of High Energy Physics, vol. 2021

Abstract

Abstract A combination of measurements sensitive to the CP violation angle γ of the Cabibbo-Kobayashi-Maskawa unitarity triangle and to the charm mixing parameters that describe oscillations between D0 and $$ \overline{D} $$ D ¯ 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 $$ x=\left({0.400}_{-0.053}^{+0.052}\right)\% $$ x = 0.400 − 0.053 + 0.052 % and y = $$ \left({0.630}_{-0.030}^{+0.033}\right)\% $$ 0.630 − 0.030 + 0.033 % . The angle γ is found to be γ = $$ \left({65.4}_{-4.2}^{+3.8}\right){}^{\circ} $$ 65.4 − 4.2 + 3.8 ° and is the most precise determination from a single experiment.

Authors 99

1. R. Aaij

   National Institute for Subatomic Physics

   Affiliation as printed

   Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands

2. A. S. W. Abdelmotteleb

   University of Warwick

   Affiliation as printed

   Department of Physics, University of Warwick, Coventry, United Kingdom

3. C. Abellán Beteta

   University of Zurich

   Affiliation as printed

   Physik-Institut, Universität Zürich, Zürich, Switzerland

4. F. Abudinén

   University of Warwick

   Affiliation as printed

   Department of Physics, University of Warwick, Coventry, United Kingdom

5. T. Ackernley

   University of Liverpool

   Affiliation as printed

   Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom

6. B. Adeva

   Universidade de Santiago de Compostela

   Affiliation as printed

   Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain

7. M. Adinolfi

   University of Bristol

   Affiliation as printed

   H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom

8. C. Agapopoulou

   Centre National de la Recherche Scientifique · Université Clermont Auvergne · Laboratoire de Physique de Clermont Auvergne · Institut National de Physique Nucléaire et de Physique des Particules

   Affiliation as printed

   Université Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, France

9. C. Aidala

   University of Michigan

   Affiliation as printed

   University of Michigan, Ann Arbor, United States

10. S. Aiola

    Istituto Nazionale di Fisica Nucleare, Sezione di Milano

    Affiliation as printed

    INFN Sezione di Milano, Milano, Italy

11. Z. Ajaltouni

    Centre National de la Recherche Scientifique · Université Clermont Auvergne · Laboratoire de Physique de Clermont Auvergne · Institut National de Physique Nucléaire et de Physique des Particules

    Affiliation as printed

    Université Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, France

12. S. Akar

    University of Cincinnati

    Affiliation as printed

    University of Cincinnati, Cincinnati, OH, United States

13. J. Albrecht

    TU Dortmund University

    Affiliation as printed

    Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany

14. F. Alessio

    European Organization for Nuclear Research

    Affiliation as printed

    European Organization for Nuclear Research (CERN), Geneva, Switzerland

15. Michael Thomas Alexander

    University of Glasgow

    Affiliation as printed

    School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom

16. A. Alfonso Albero

    Institut de Ciències del Cosmos · Universitat de Barcelona

    Affiliation as printed

    ICCUB, Universitat de Barcelona, Barcelona, Spain

17. Zakariya Aliouche

    University of Manchester

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    Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom

18. G. Alkhazov

    Kurchatov Institute · Petersburg Nuclear Physics Institute

    Affiliation as printed

    Petersburg Nuclear Physics Institute NRC Kurchatov Institute (PNPI NRC KI), Gatchina, Russia

19. P. Álvarez Cartelle

    University of Cambridge

    Affiliation as printed

    Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom

20. S. Amato

    Universidade Federal do Rio de Janeiro

    Affiliation as printed

    Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil

21. J. L. Amey

    University of Bristol

    Affiliation as printed

    H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom

22. Y. Amhis

    Centre National de la Recherche Scientifique · Université Paris-Saclay · Institut National de Physique Nucléaire et de Physique des Particules · Laboratoire de Physique des 2 Infinis Irène Joliot-Curie

    Affiliation as printed

    Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France

23. Liupan An

    Universidade Federal do Rio de Janeiro

    Affiliation as printed

    Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil

24. L. Anderlini

    Istituto Nazionale di Fisica Nucleare, Sezione di Firenze

    Affiliation as printed

    INFN Sezione di Firenze, Firenze, Italy

25. A. Andreianov

    Kurchatov Institute · Petersburg Nuclear Physics Institute

    Affiliation as printed

    Petersburg Nuclear Physics Institute NRC Kurchatov Institute (PNPI NRC KI), Gatchina, Russia

26. M. Andreotti

    Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara

    Affiliation as printed

    INFN Sezione di Ferrara, Ferrara, Italy

27. F. Archilli

    Heidelberg University

    Affiliation as printed

    Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany

28. A. Artamonov

    Kurchatov Institute · Institute for High Energy Physics

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    Institute for High Energy Physics NRC Kurchatov Institute (IHEP NRC KI), Protvino, Russia

29. M. Artuso

    Syracuse University

    Affiliation as printed

    Syracuse University, Syracuse, NY, United States

30. K. Arzymatov

    Yandex School of Data Analysis · Yandex (Russia)

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    Yandex School of Data Analysis, Moscow, Russia

31. E. Aslanides

    Centre National de la Recherche Scientifique · Aix-Marseille Université · Centre de physique des particules de Marseille · Institut National de Physique Nucléaire et de Physique des Particules

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    Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France

32. M. Atzeni

    University of Zurich

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    Physik-Institut, Universität Zürich, Zürich, Switzerland

33. B. Audurier

    Centre National de la Recherche Scientifique · École Polytechnique · Institut National de Physique Nucléaire et de Physique des Particules · Institut Polytechnique de Paris · Laboratoire Leprince-Ringuet

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    Laboratoire Leprince-Ringuet, CNRS/IN2P3, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau, France

34. S. Bachmann

    Heidelberg University

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    Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany

35. M. Bachmayer

    École Polytechnique Fédérale de Lausanne

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    Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland

36. J. J. Back

    University of Warwick

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    Department of Physics, University of Warwick, Coventry, United Kingdom

37. P. Baladrón Rodríguez

    Universidade de Santiago de Compostela

    Affiliation as printed

    Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain

38. V. Balagura

    Centre National de la Recherche Scientifique · École Polytechnique · Institut National de Physique Nucléaire et de Physique des Particules · Institut Polytechnique de Paris · Laboratoire Leprince-Ringuet

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    Laboratoire Leprince-Ringuet, CNRS/IN2P3, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau, France

39. W. Baldini

    Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara

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    INFN Sezione di Ferrara, Ferrara, Italy

40. J. Baptista de Souza Leite

    Centro Brasileiro de Pesquisas Físicas

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    Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil

41. M. Barbetti

    Istituto Nazionale di Fisica Nucleare, Sezione di Firenze

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    INFN Sezione di Firenze, Firenze, Italy

42. Roger John Barlow

    University of Manchester

    Affiliation as printed

    Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom

43. S. Barsuk

    Centre National de la Recherche Scientifique · Université Paris-Saclay · Institut National de Physique Nucléaire et de Physique des Particules · Laboratoire de Physique des 2 Infinis Irène Joliot-Curie

    Affiliation as printed

    Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France

44. W Barter

    Imperial College London

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    Imperial College London, London, United Kingdom

45. M. Bartolini

    Istituto Nazionale di Fisica Nucleare, Sezione di Genova

    Affiliation as printed

    INFN Sezione di Genova, Genova, Italy

46. F. Baryshnikov

    National University of Science and Technology

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    National University of Science and Technology "MISIS", Moscow, Russia

47. J. M. Basels Aachen I. Physikalisches Institut

    RWTH Aachen University

    Affiliation as printed

    I. Physikalisches Institut, RWTH Aachen University, Aachen, Germany

48. Saliha Bashir

    AGH University of Krakow

    Affiliation as printed

    AGH — University of Science and Technology, Faculty of Physics and Applied Computer Science, Kraków, Poland

49. G. Bassi

    Istituto Nazionale di Fisica Nucleare, Sezione di Pisa

    Affiliation as printed

    INFN Sezione di Pisa, Pisa, Italy

50. B. Batsukh

    Syracuse University

    Affiliation as printed

    Syracuse University, Syracuse, NY, United States

51. A. Battig

    TU Dortmund University

    Affiliation as printed

    Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany

52. A. Bay

    École Polytechnique Fédérale de Lausanne

    Affiliation as printed

    Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland

53. A. Beck

    TU Dortmund University

    Affiliation as printed

    Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany

54. M. Becker

    TU Dortmund University

    Affiliation as printed

    Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany

55. F. Bedeschi

    Istituto Nazionale di Fisica Nucleare, Sezione di Pisa

    Affiliation as printed

    INFN Sezione di Pisa, Pisa, Italy

56. I. Bediaga

    Centro Brasileiro de Pesquisas Físicas

    Affiliation as printed

    Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil

57. A. Beiter

    Syracuse University

    Affiliation as printed

    Syracuse University, Syracuse, NY, United States

58. V. Belavin

    Yandex School of Data Analysis · Yandex (Russia)

    Affiliation as printed

    Yandex School of Data Analysis, Moscow, Russia

59. S. Belin

    Istituto Nazionale di Fisica Nucleare, Sezione di Cagliari

    Affiliation as printed

    INFN Sezione di Cagliari, Monserrato, Italy

60. V. Bellée

    University of Zurich

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    Physik-Institut, Universität Zürich, Zürich, Switzerland

61. K. Belous

    Kurchatov Institute · Institute for High Energy Physics

    Affiliation as printed

    Institute for High Energy Physics NRC Kurchatov Institute (IHEP NRC KI), Protvino, Russia

62. I. Belov

    Lomonosov Moscow State University

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    Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia

63. I. Belyaev

    Kurchatov Institute · Institute for Theoretical and Experimental Physics

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    Institute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia

64. G. Bencivenni

    Istituto Nazionale di Fisica Nucleare · Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati

    Affiliation as printed

    INFN Laboratori Nazionali di Frascati, Frascati, Italy

65. E. Ben-Haim

    Centre National de la Recherche Scientifique · Sorbonne Université · Laboratoire de Physique Nucléaire et de Hautes Énergies · Institut National de Physique Nucléaire et de Physique des Particules

    Affiliation as printed

    LPNHE, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, Paris, France

66. Alexander Berezhnoy

    Lomonosov Moscow State University

    Affiliation as printed

    Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia

67. R. Bernet

    University of Zurich

    Affiliation as printed

    Physik-Institut, Universität Zürich, Zürich, Switzerland

68. D. Berninghoff

    Heidelberg University

    Affiliation as printed

    Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany

69. H. C. Bernstein

    Syracuse University

    Affiliation as printed

    Syracuse University, Syracuse, NY, United States

70. C. Bertella

    European Organization for Nuclear Research

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    European Organization for Nuclear Research (CERN), Geneva, Switzerland

71. A. Bertolin

    University of Padua · Istituto Nazionale di Fisica Nucleare, Sezione di Padova

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    Universita degli Studi di Padova, Universita e INFN, Padova, Padova, Italy

72. C. Betancourt

    University of Zurich

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    Physik-Institut, Universität Zürich, Zürich, Switzerland

73. F. Betti

    European Organization for Nuclear Research

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    European Organization for Nuclear Research (CERN), Geneva, Switzerland

74. Ia. Bezshyiko

    University of Zurich

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    Physik-Institut, Universität Zürich, Zürich, Switzerland

75. S. Bhasin

    University of Bristol

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    H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom

76. J. Bhom

    Institute of Nuclear Physics, Polish Academy of Sciences

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    Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland

77. L. Bian

    Wuhan University

    Affiliation as printed

    School of Physics and Technology, Wuhan University, Wuhan, China

78. M. S. Bieker

    TU Dortmund University

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    Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany

79. S. Bifani

    University of Birmingham

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    University of Birmingham, Birmingham, United Kingdom

80. P. Billoir

    Centre National de la Recherche Scientifique · Sorbonne Université · Laboratoire de Physique Nucléaire et de Hautes Énergies · Institut National de Physique Nucléaire et de Physique des Particules

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    LPNHE, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, Paris, France

81. M. Birch

    Imperial College London

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    Imperial College London, London, United Kingdom

82. F. C. R. Bishop

    University of Cambridge

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    Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom

83. A. Bitadze

    University of Manchester

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    Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom

84. A. Bizzeti

    Istituto Nazionale di Fisica Nucleare, Sezione di Firenze

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    INFN Sezione di Firenze, Firenze, Italy

85. M. Bjørn

    University of Oxford

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    Department of Physics, University of Oxford, Oxford, United Kingdom

86. Michele Piero Blago

    European Organization for Nuclear Research

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    European Organization for Nuclear Research (CERN), Geneva, Switzerland

87. Thomas Blake

    University of Warwick

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    Department of Physics, University of Warwick, Coventry, United Kingdom

88. F. Blanc

    École Polytechnique Fédérale de Lausanne

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    Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland

89. Steven Roy Blusk

    Syracuse University

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    Syracuse University, Syracuse, NY, United States

90. D. Bobulska

    University of Glasgow

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    School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom

91. J. A. Boelhauve

    TU Dortmund University

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    Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany

92. O. Boente García

    Universidade de Santiago de Compostela

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    Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain

93. T. Boettcher

    University of Cincinnati

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    University of Cincinnati, Cincinnati, OH, United States

94. A. S. Boldyrev

    National Research University Higher School of Economics

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    National Research University Higher School of Economics, Moscow, Russia

95. A. Bondar

    Kurchatov Institute · Petersburg Nuclear Physics Institute

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    Petersburg Nuclear Physics Institute NRC Kurchatov Institute (PNPI NRC KI), Gatchina, Russia

96. N. Bondar

    Kurchatov Institute · Petersburg Nuclear Physics Institute

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    Petersburg Nuclear Physics Institute NRC Kurchatov Institute (PNPI NRC KI), Gatchina, Russia

97. S. Borghi

    University of Manchester

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    Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom

98. M. Borisyak

    Yandex School of Data Analysis · Yandex (Russia)

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    Yandex School of Data Analysis, Moscow, Russia

99. M. Borsato

    Heidelberg University

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    Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany