Evidence for B − → D * * 0 τ − ν τ ¯ Decays

Physical Review Letters, vol. 135, pp. 021802

Abstract

The first evidence for the decay B^{-}→D^{**0}τ^{-}ν[over ¯]_{τ} is obtained using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb^{-1}, at centre-of-mass energies of 7, 8, and 13 TeV. Here, the D^{**0} meson represents any of the three excited charm mesons D_{1}(2420)^{0}, D_{2}^{*}(2460)^{0}, and D_{1}^{'}(2400)^{0}. The B^{-}→D^{**0}τ^{-}ν[over ¯]_{τ} signal is measured with a significance of 3.5σ, including systematic uncertainties. The combined branching fraction B(B^{-}→D_{1,2}^{**0}τ^{-}ν[over ¯]_{τ})×B(D_{1,2}^{**0}→D^{*+}π^{-}), where D_{1,2}^{**0} denotes both D_{1}(2420)^{0} and D_{2}^{*}(2460)^{0} contributions, is measured to be [0.051±0.013(stat)±0.006(syst)±0.009(ext)]%, where the last uncertainty reflects that of the branching fraction of the normalization channel B^{-}→D_{1,2}^{**0}D_{s}^{-}^{(*)}. The ratio between the tauonic and muonic semileptonic B decays, with the latter taken from world average values, is also determined and found to be R(D_{1,2}^{**0})=0.13±0.03(stat)±0.01(syst)±0.02(ext).

Authors 94

1. A. S. W. Abdelmotteleb

   University of Warwick

   Affiliation as printed

   University of Warwick

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

2. F. Abudinén

   University of Warwick

   Affiliation as printed

   University of Warwick

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

3. T. Ackernley

   University of Liverpool

   Affiliation as printed

   University of Liverpool

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

4. A. A. Adefisoye

   Syracuse University

   Affiliation as printed

   Syracuse University

   Syracuse University, Syracuse, New York, USA

5. B. Adeva

   Universidade de Santiago de Compostela

   Affiliation as printed

   Universidade de Santiago de Compostela

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

6. M. Adinolfi

   University of Bristol

   Affiliation as printed

   University of Bristol

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

7. P. Adlarson

   Uppsala University · University of Glasgow

   Affiliation as printed

   University of Glasgow

   Uppsala University

   Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden (associated with School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom)

8. C. Agapopoulou

   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

9. C. Aidala

   University of Michigan · Syracuse University

   Affiliation as printed

   Syracuse University

   University of Michigan

   University of Michigan, Ann Arbor, Michigan, USA (associated with Syracuse University, Syracuse, New York, USA)

10. 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

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

11. S. Akar

    University of Cincinnati

    Affiliation as printed

    University of Cincinnati

    University of Cincinnati, Cincinnati, Ohio, USA

12. K. Carvalho Akiba

    National Institute for Subatomic Physics

    Affiliation as printed

    Nikhef National Institute for Subatomic Physics

    Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands

13. P. Albicocco

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

    Affiliation as printed

    INFN Laboratori Nazionali di Frascati

    INFN Laboratori Nazionali di Frascati, Frascati, Italy

14. J. Albrecht

    TU Dortmund University

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    Technische Universität Dortmund

    Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany

15. F. Alessio

    European Organization for Nuclear Research

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    CERN

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

16. Zakariya Aliouche

    University of Manchester

    Affiliation as printed

    University of Manchester

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

17. P. Álvarez Cartelle

    University of Cambridge

    Affiliation as printed

    University of Cambridge

    Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom

18. R. Amalric

    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

    Sorbonne Université

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

19. S. Amato

    Universidade Federal do Rio de Janeiro

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    Universidade Federal do Rio de Janeiro (UFRJ)

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

20. S. Amato

    University of Bristol

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    University of Bristol

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

21. 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

22. Liupan An

    Peking University · State Key Laboratory of Nuclear Physics and Technology

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    Peking University

    School of Physics State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, China

23. L. Anderlini

    Istituto Nazionale di Fisica Nucleare, Sezione di Firenze

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    INFN Sezione di Firenze

    INFN Sezione di Firenze, Firenze, Italy

24. M. Andersson

    University of Zurich

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    Universität Zürich

    Physik-Institut, Universität Zürich, Zürich, Switzerland

25. A. Andreianov

    European Organization for Nuclear Research

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    CERN

    Authors affiliated with an institute formerly covered by a cooperation agreement with CERN

26. P. Andreola

    University of Zurich

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    Universität Zürich

    Physik-Institut, Universität Zürich, Zürich, Switzerland

27. M. Andreotti

    Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara

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    INFN Sezione di Ferrara

    INFN Sezione di Ferrara, Ferrara, Italy

28. D. Andreou

    Syracuse University

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    Syracuse University

    Syracuse University, Syracuse, New York, USA

29. Alessia Anelli

    Istituto Nazionale di Fisica Nucleare, Sezione di Milano Bicocca

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    INFN Sezione di Milano-Bicocca

    INFN Sezione di Milano-Bicocca, Milano, Italy

30. D. Ao

    University of Chinese Academy of Sciences

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    University of Chinese Academy of Sciences

    University of Chinese Academy of Sciences, Beijing, China

31. F. Archilli

    Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata

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    INFN Sezione di Roma Tor Vergata

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32. Matteo Argenton

    Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara

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    INFN Sezione di Ferrara

    INFN Sezione di Ferrara, Ferrara, Italy

33. S. Arguedas Cuendis

    Consejo Nacional de Rectores · European Organization for Nuclear Research

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    CERN

    Consejo Nacional de Rectores (CONARE)

    Consejo Nacional de Rectores (CONARE), San Jose, Costa Rica

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

34. A. Artamonov

    European Organization for Nuclear Research

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    CERN

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35. M. Artuso

    Syracuse University

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    Syracuse University

    Syracuse University, Syracuse, New York, USA

36. 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 Université

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37. M. Atzeni

    Massachusetts Institute of Technology

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    Massachusetts Institute of Technology

    Massachusetts Institute of Technology, Cambridge, Massachusetts, USA

38. B. Audurier

    Commissariat à l'Énergie Atomique et aux Énergies Alternatives · Université Paris-Saclay · CEA Paris-Saclay - Etablissement de Saclay · CEA Paris-Saclay · Institut de Recherche sur les Lois Fondamentales de l'Univers

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    Université Paris-Saclay, Centre d’Etudes de Saclay (CEA), IRFU, Saclay, France, Gif-Sur-Yvette, France

    Université Paris-Saclay, Centre d'Etudes de Saclay (CEA), IRFU, Saclay, France, Gif-Sur-Yvette, France

39. D. Bacher

    University of Oxford

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    University of Oxford

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

40. I. Bachiller

    Centre National de la Recherche Scientifique · Laboratoire d’Annecy de Physique des Particules · Institut National de Physique Nucléaire et de Physique des Particules · Université Savoie Mont Blanc

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    Université Savoie Mont Blanc

    Université Savoie Mont Blanc, CNRS, IN2P3-LAPP, Annecy, France

41. S. Bachmann

    Heidelberg University

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    Ruprecht-Karls-Universität Heidelberg

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

42. Marie Bachmayer

    École Polytechnique Fédérale de Lausanne

    Affiliation as printed

    Institute of Physics

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

43. John J Back

    University of Warwick

    Affiliation as printed

    University of Warwick

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

44. P. Baladrón Rodríguez

    Universidade de Santiago de Compostela

    Affiliation as printed

    Universidade de Santiago de Compostela

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

45. 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

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

46. A Balboni

    Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara

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    INFN Sezione di Ferrara

    INFN Sezione di Ferrara, Ferrara, Italy

47. W. Baldini

    Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara

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    INFN Sezione di Ferrara

    INFN Sezione di Ferrara, Ferrara, Italy

48. Luca Balzani

    TU Dortmund University

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    Technische Universität Dortmund

    Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany

49. H. Bao

    University of Chinese Academy of Sciences

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    University of Chinese Academy of Sciences

    University of Chinese Academy of Sciences, Beijing, China

50. J. Baptista de Souza Leite

    University of Liverpool

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    University of Liverpool

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

51. C. Barbero Pretel

    Universidade de Santiago de Compostela · Commissariat à l'Énergie Atomique et aux Énergies Alternatives · Université Paris-Saclay · CEA Paris-Saclay - Etablissement de Saclay · CEA Paris-Saclay · Institut de Recherche sur les Lois Fondamentales de l'Univers

    Affiliation as printed

    Universidade de Santiago de Compostela

    Université Paris-Saclay, Centre d’Etudes de Saclay (CEA), IRFU, Saclay, France, Gif-Sur-Yvette, France

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

    Université Paris-Saclay, Centre d'Etudes de Saclay (CEA), IRFU, Saclay, France, Gif-Sur-Yvette, France

52. M. Barbetti

    Istituto Nazionale di Fisica Nucleare, Sezione di Firenze

    Affiliation as printed

    INFN Sezione di Firenze

    INFN Sezione di Firenze, Firenze, Italy

53. I. R. Barbosa

    Universidade Federal do Rio de Janeiro · Pontifícia Universidade Católica do Rio de Janeiro

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    Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio)

    Universidade Federal do Rio de Janeiro (UFRJ)

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54. Roger John Barlow

    University of Manchester

    Affiliation as printed

    University of Manchester

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

55. 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

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

56. W. Barter

    University of Edinburgh

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    University of Edinburgh

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

57. M. Bartolini

    University of Cambridge

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    University of Cambridge

    Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom

58. Justin Bartz

    Syracuse University

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    Syracuse University

    Syracuse University, Syracuse, New York, USA

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

    RWTH Aachen University

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    RWTH Aachen University

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

60. G. Bassi

    Istituto Nazionale di Fisica Nucleare, Sezione di Pisa

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    INFN Sezione di Pisa

    INFN Sezione di Pisa, Pisa, Italy

61. B. Batsukh

    Institute of High Energy Physics

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    Institute of High Energy Physics (IHEP)

    Institute of High Energy Physics (IHEP), Beijing, China

62. Piera Battista

    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

63. A. Bay

    École Polytechnique Fédérale de Lausanne

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    Institute of Physics

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

64. A. Beck

    University of Warwick

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    University of Warwick

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

65. F. Bedeschi

    Istituto Nazionale di Fisica Nucleare, Sezione di Pisa

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    INFN Sezione di Pisa

    INFN Sezione di Pisa, Pisa, Italy

66. I. Bediaga

    Centro Brasileiro de Pesquisas Físicas

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    Centro Brasileiro de Pesquisas Físicas (CBPF)

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

67. Noah Albin Behling

    TU Dortmund University

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    Technische Universität Dortmund

    Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany

68. S. Belin

    Universidade de Santiago de Compostela

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    Universidade de Santiago de Compostela

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

69. K. Belous

    European Organization for Nuclear Research

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    CERN

    Authors affiliated with an institute formerly covered by a cooperation agreement with CERN

70. I. Belov

    Istituto Nazionale di Fisica Nucleare, Sezione di Genova

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    INFN Sezione di Genova

    INFN Sezione di Genova, Genova, Italy

71. I. Belyaev

    Istituto Nazionale di Fisica Nucleare, Sezione di Roma I

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    INFN Sezione di Roma La Sapienza

    INFN Sezione di Roma La Sapienza, Roma, Italy

72. G. Benane

    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 Université

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

73. G. Bencivenni

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

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    INFN Laboratori Nazionali di Frascati

    INFN Laboratori Nazionali di Frascati, Frascati, Italy

74. 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

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    Sorbonne Université

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

75. Alexander Berezhnoy

    European Organization for Nuclear Research

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    CERN

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76. R. Bernet

    University of Zurich

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    Universität Zürich

    Physik-Institut, Universität Zürich, Zürich, Switzerland

77. Sergi Bernet Andrés

    Universitat Ramon Llull

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    Universitat Ramon Llull

    DS4DS, La Salle, Universitat Ramon Llull, Barcelona, Spain

78. A. Bertolin

    Istituto Nazionale di Fisica Nucleare, Sezione di Padova

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    INFN Sezione di Padova

    INFN Sezione di Padova, Padova, Italy

79. C. Betancourt

    University of Zurich

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    Universität Zürich

    Physik-Institut, Universität Zürich, Zürich, Switzerland

80. F. Betti

    University of Edinburgh

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    University of Edinburgh

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

81. J. Bex

    University of Cambridge

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    University of Cambridge

    Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom

82. Ia. Bezshyiko

    University of Zurich

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    Universität Zürich

    Physik-Institut, Universität Zürich, Zürich, Switzerland

83. J. Bhom

    Institute of Nuclear Physics, Polish Academy of Sciences

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    Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences

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

84. M. S. Bieker

    TU Dortmund University

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    Technische Universität Dortmund

    Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany

85. N. V. Biesuz

    Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara

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    INFN Sezione di Ferrara

    INFN Sezione di Ferrara, Ferrara, Italy

86. 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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    Sorbonne Université

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

87. Alice Biolchini

    National Institute for Subatomic Physics

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    Nikhef National Institute for Subatomic Physics

    Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands

88. M. Birch

    Imperial College London

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    Imperial College London

    Imperial College London, London, United Kingdom

89. F. C. R. Bishop

    Centre National de la Recherche Scientifique · Laboratoire d’Annecy de Physique des Particules · Institut National de Physique Nucléaire et de Physique des Particules · Université Savoie Mont Blanc

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    Université Savoie Mont Blanc

    Université Savoie Mont Blanc, CNRS, IN2P3-LAPP, Annecy, France

90. A. Bitadze

    University of Manchester

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    University of Manchester

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

91. A. Bizzeti Aachen I. Physikalisches Institut

    University College Dublin · Eötvös Loránd University · Universidade da Coruña · Universidade Federal do Rio de Janeiro · Uppsala University · Rutherford Appleton Laboratory · Centre National de la Recherche Scientifique · Los Alamos National Laboratory · University of Bonn · École Polytechnique · University of Liverpool · National Academy of Sciences of Ukraine · Istituto Nazionale di Fisica Nucleare · Universitat de València · University of Freiburg · Hunan University · University of Groningen · South China Normal University · Université Clermont Auvergne · Universidade de Santiago de Compostela · TU Dortmund University · Peking University · University of Zurich · Aix-Marseille Université · Heidelberg University · University of Cambridge · Cracow University of Technology · Pontifícia Universidade Católica do Rio de Janeiro · Commissariat à l'Énergie Atomique et aux Énergies Alternatives · Université Paris-Saclay · University of Michigan · Laboratoire d’Annecy de Physique des Particules · Kharkiv Institute of Physics and Technology · CEA Paris-Saclay - Etablissement de Saclay · University of Manchester · Maastricht University · University of Bristol · Universidad Nacional de Colombia · Wuhan University · University of Warwick · Sorbonne Université · University of Oxford · Central China Normal University · Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering · National Institute for Subatomic Physics · Centre de physique des particules de Marseille · National Centre for Nuclear Research · Instituto de Física Corpuscular · Laboratoire de Physique de Clermont Auvergne · Laboratoire de Physique Nucléaire et de Hautes Énergies · Istituto Nazionale di Fisica Nucleare, Sezione di Padova · Institute of Nuclear Physics, Polish Academy of Sciences · Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara · Istituto Nazionale di Fisica Nucleare, Sezione di Bari · Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata · Centro Brasileiro de Pesquisas Físicas · Istituto Nazionale di Fisica Nucleare, Sezione di Genova · CEA Paris-Saclay · Istituto Nazionale di Fisica Nucleare, Sezione di Cagliari · Istituto Nazionale di Fisica Nucleare, Sezione di Firenze · Institut National de Physique Nucléaire et de Physique des Particules · Laboratoire de Physique des 2 Infinis Irène Joliot-Curie · Istituto Nazionale di Fisica Nucleare, Sezione di Milano · Institute of High Energy Physics · Istituto Nazionale di Fisica Nucleare, Sezione di Milano Bicocca · Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati · Institut Polytechnique de Paris · Institute for Nuclear Research · Istituto Nazionale di Fisica Nucleare, Sezione di Bologna · Laboratoire Leprince-Ringuet · Max Planck Institute for Nuclear Physics · Istituto Nazionale di Fisica Nucleare, Sezione di Roma I · Istituto Nazionale di Fisica Nucleare, Sezione di Pisa · Istituto Nazionale di Fisica Nucleare, Sezione di Perugia · University of Chinese Academy of Sciences · Institut de Recherche sur les Lois Fondamentales de l'Univers · Université Paris Diderot · Consejo Nacional de Rectores · State Key Laboratory of Nuclear Physics and Technology · Institut de Ciències del Cosmos · Imperial College London · École Polytechnique Fédérale de Lausanne · Universitat Ramon Llull · Monash University · University of Cincinnati · Massachusetts Institute of Technology · University of Maryland, College Park · European Organization for Nuclear Research · AGH University of Krakow · Université Savoie Mont Blanc · Syracuse University · Universitat de Barcelona · Lanzhou University · University of Glasgow · University of Birmingham · RWTH Aachen University · Ruhr University Bochum · University of Edinburgh · Tsinghua University

    Affiliation as printed

    AGH-University of Krakow, Faculty of Physics and Applied Computer Science, Kraków, Poland

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

    Authors affiliated with an institute formerly covered by a cooperation agreement with CERN

    Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom

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

    Consejo Nacional de Rectores (CONARE), San Jose, Costa Rica

    DS4DS, La Salle, Universitat Ramon Llull, Barcelona, Spain

    Departamento de Fisica, Universidad Nacional de Colombia, Bogota, Colombia (associated with LPNHE, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, Paris, France)

    Department of Engineering Physics, Tsinghua University, Beijing, China

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

    Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden (associated with School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom)

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

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

    Eotvos Lorand University, Budapest, Hungary (associated with European Organization for Nuclear Research (CERN), Geneva, Switzerland)

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

    Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany

    Guangdong Provincial Key Laboratory of Nuclear Science, Guangdong-Hong Kong Joint Laboratory of Quantum Matter, Institute of Quantum Matter, South China Normal University, Guangzhou, China (associated with Department of Engineering Physics, Tsinghua University, Beijing, China)

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

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

    Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania

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

    ICCUB, Universitat de Barcelona, Barcelona, Spain

    INFN Laboratori Nazionali di Frascati, Frascati, Italy

    INFN Sezione di Bari, Bari, Italy

    INFN Sezione di Bologna, Bologna, Italy

    INFN Sezione di Cagliari, Monserrato, Italy

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    INFN Sezione di Genova, Genova, Italy

    INFN Sezione di Milano, Milano, Italy

    INFN Sezione di Milano-Bicocca, Milano, Italy

    INFN Sezione di Padova, Padova, Italy

    INFN Sezione di Perugia, Perugia, Italy

    INFN Sezione di Pisa, Pisa, Italy

    INFN Sezione di Roma La Sapienza, Roma, Italy

    INFN Sezione di Roma Tor Vergata, Roma, Italy

    Imperial College London, London, United Kingdom

    Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine

    Institute of High Energy Physics (IHEP), Beijing, China

    Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China

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

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

    Instituto de Fisica Corpuscular, Centro Mixto Universidad de Valencia-CSIC, Valencia, Spain

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

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

    Lanzhou University, Lanzhou, China (associated with Institute of High Energy Physics (IHEP), Beijing, China)

    Los Alamos National Laboratory (LANL), Los Alamos, New Mexico, USA

    Massachusetts Institute of Technology, Cambridge, Massachusetts, USA

    Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany

    NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine

    National Center for Nuclear Research (NCBJ), Warsaw, Poland

    Nikhef National Institute for Subatomic Physics and VU University Amsterdam, Amsterdam, Netherlands

    Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands

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

    Physik-Institut, Universität Zürich, Zürich, Switzerland

    Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany

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

    Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil (associated with Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil)

    Ruhr Universitaet Bochum, Fakultaet für Physik und Astronomie, Bochum, Germany (associated with Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany)

    STFC Rutherford Appleton Laboratory, Didcot, United Kingdom

    School of Physics State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, China

    School of Physics and Astronomy, Monash University, Melbourne, Australia

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

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

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

    School of Physics and Electronics, Hunan University, Changsha City, China (associated with Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China)

    School of Physics and Technology, Wuhan University, Wuhan, China (associated with Department of Engineering Physics, Tsinghua University, Beijing, China)

    School of Physics, University College Dublin, Dublin, Ireland

    Syracuse University, Syracuse, New York, USA

    Tadeusz Kosciuszko Cracow University of Technology, Cracow, Poland (associated with Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland)

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

    Universidade da Coruña, A Coruña, Spain (associated with DS4DS, La Salle, Universitat Ramon Llull, Barcelona, Spain)

    Universiteit Maastricht, Maastricht, Netherlands (associated with Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands)

    University of Chinese Academy of Sciences, Beijing, China

    University of Cincinnati, Cincinnati, Ohio, USA

    University of Maryland, College Park, Maryland, USA

    University of Michigan, Ann Arbor, Michigan, USA (associated with Syracuse University, Syracuse, New York, USA)

    Universität Bonn-Helmholtz-Institut für Strahlen und Kernphysik, Bonn, Germany

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

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

    Université Paris-Saclay, Centre d'Etudes de Saclay (CEA), IRFU, Saclay, France, Gif-Sur-Yvette, France

    Université Savoie Mont Blanc, CNRS, IN2P3-LAPP, Annecy, France

    Van Swinderen Institute, University of Groningen, Groningen, Netherlands (associated with Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands)

92. Thomas Blake

    University of Warwick

    Affiliation as printed

    University of Warwick

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

93. F. Blanc

    École Polytechnique Fédérale de Lausanne

    Affiliation as printed

    Institute of Physics

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

94. J. E. Blank

    TU Dortmund University

    Affiliation as printed

    Technische Universität Dortmund

    Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany