$$ {\Lambda}_c^{+} $$ polarimetry using the dominant hadronic mode

Journal of High Energy Physics, vol. 2023

Abstract

Abstract The polarimeter vector field for multibody decays of a spin-half baryon is introduced as a generalisation of the baryon asymmetry parameters. Using a recent amplitude analysis of the $$ {\Lambda}_c^{+} $$ Λ c + → pK−π+ decay performed at the LHCb experiment, we compute the distribution of the kinematic-dependent polarimeter vector for this process in the space of Mandelstam variables to express the polarised decay rate in a model-agnostic form. The obtained representation can facilitate polarisation measurements of the $$ {\Lambda}_c^{+} $$ Λ c + baryon and eases inclusion of the $$ {\Lambda}_c^{+} $$ Λ c + → pK−π+ decay mode in hadronic amplitude analyses.

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. P. Adlarson

   Uppsala University

   Affiliation as printed

   Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden

9. 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

10. C. Aidala

    University of Michigan

    Affiliation as printed

    University of Michigan, Ann Arbor, MI, United States

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. K. Carvalho Akiba

    National Institute for Subatomic Physics

    Affiliation as printed

    Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands

14. P. Albicocco

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

    Affiliation as printed

    INFN Laboratori Nazionali di Frascati, Frascati, Italy

15. J. Albrecht

    TU Dortmund University

    Affiliation as printed

    Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany

16. F. Alessio

    European Organization for Nuclear Research

    Affiliation as printed

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

17. Michael Thomas Alexander

    University of Glasgow

    Affiliation as printed

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

18. A. Alfonso Albero

    Institut de Ciències del Cosmos · Universitat de Barcelona

    Affiliation as printed

    ICCUB, Universitat de Barcelona, Barcelona, Spain

19. Zakariya Aliouche

    University of Manchester

    Affiliation as printed

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

20. P. Álvarez Cartelle

    University of Cambridge

    Affiliation as printed

    Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom

21. 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

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

22. S. Amato

    Universidade Federal do Rio de Janeiro

    Affiliation as printed

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

23. J. L. Amey

    University of Bristol

    Affiliation as printed

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

24. 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

25. L. An

    Universidade Federal do Rio de Janeiro

    Affiliation as printed

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

26. L. Anderlini

    Istituto Nazionale di Fisica Nucleare, Sezione di Firenze

    Affiliation as printed

    INFN Sezione di Firenze, Firenze, Italy

27. M. Andersson

    University of Zurich

    Affiliation as printed

    Physik-Institut, Universität Zürich, Zürich, Switzerland

28. A. Andreianov
29. M. Andreotti

    Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara

    Affiliation as printed

    INFN Sezione di Ferrara, Ferrara, Italy

30. D. Andreou

    Syracuse University

    Affiliation as printed

    Syracuse University, Syracuse, NY, United States

31. D. Ao

    Institute of High Energy Physics

    Affiliation as printed

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

32. F. Archilli

    Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata

    Affiliation as printed

    INFN Sezione di Roma Tor Vergata, Roma, Italy

33. A. Artamonov
34. M. Artuso

    Syracuse University

    Affiliation as printed

    Syracuse University, Syracuse, NY, United States

35. 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

    Affiliation as printed

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

36. M. Atzeni

    University of Zurich

    Affiliation as printed

    Physik-Institut, Universität Zürich, Zürich, Switzerland

37. 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

    Affiliation as printed

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

38. 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

    Affiliation as printed

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

39. S. Bachmann

    Heidelberg University

    Affiliation as printed

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

40. Marie Bachmayer

    École Polytechnique Fédérale de Lausanne

    Affiliation as printed

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

41. John J Back

    University of Warwick

    Affiliation as printed

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

42. A. Bailly-reyre

    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

43. 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

44. 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

    Affiliation as printed

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

45. W. Baldini

    Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara

    Affiliation as printed

    INFN Sezione di Ferrara, Ferrara, Italy

46. J. Baptista de Souza Leite

    Centro Brasileiro de Pesquisas Físicas

    Affiliation as printed

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

47. M. Barbetti

    Istituto Nazionale di Fisica Nucleare, Sezione di Firenze

    Affiliation as printed

    INFN Sezione di Firenze, Firenze, Italy

48. Roger John Barlow

    University of Manchester

    Affiliation as printed

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

49. 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

50. W. Barter

    University of Edinburgh

    Affiliation as printed

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

51. M. Bartolini

    University of Cambridge

    Affiliation as printed

    Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom

52. F. Baryshnikov

    Universidade Federal do Rio de Janeiro

    Affiliation as printed

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

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

    RWTH Aachen University

    Affiliation as printed

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

54. G. Bassi

    Istituto Nazionale di Fisica Nucleare, Sezione di Pisa

    Affiliation as printed

    INFN Sezione di Pisa, Pisa, Italy

55. B. Batsukh

    Institute of High Energy Physics

    Affiliation as printed

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

56. A. Battig

    TU Dortmund University

    Affiliation as printed

    Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany

57. A. Bay

    École Polytechnique Fédérale de Lausanne

    Affiliation as printed

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

58. A. Beck

    TU Dortmund University

    Affiliation as printed

    Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany

59. M. Becker

    TU Dortmund University

    Affiliation as printed

    Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany

60. F. Bedeschi

    Istituto Nazionale di Fisica Nucleare, Sezione di Pisa

    Affiliation as printed

    INFN Sezione di Pisa, Pisa, Italy

61. I. Bediaga

    Centro Brasileiro de Pesquisas Físicas

    Affiliation as printed

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

62. A. Beiter

    Syracuse University

    Affiliation as printed

    Syracuse University, Syracuse, NY, United States

63. S. Belin

    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

64. V. Bellée

    University of Zurich

    Affiliation as printed

    Physik-Institut, Universität Zürich, Zürich, Switzerland

65. K. Belous

    Institute of High Energy Physics

    Affiliation as printed

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

66. I. Belov

    Peking University · State Key Laboratory of Nuclear Physics and Technology

    Affiliation as printed

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

67. I. Belyaev

    Peking University · State Key Laboratory of Nuclear Physics and Technology

    Affiliation as printed

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

68. 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

    Affiliation as printed

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

69. 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

70. 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

71. Alexander Berezhnoy
72. R. Bernet

    University of Zurich

    Affiliation as printed

    Physik-Institut, Universität Zürich, Zürich, Switzerland

73. Sergi Bernet Andrés

    Universitat Ramon Llull

    Affiliation as printed

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

74. D. Berninghoff

    Heidelberg University

    Affiliation as printed

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

75. H. C. Bernstein

    Syracuse University

    Affiliation as printed

    Syracuse University, Syracuse, NY, United States

76. C. Bertella

    University of Manchester

    Affiliation as printed

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

77. A. Bertolin

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

    Affiliation as printed

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

78. C. Betancourt

    University of Zurich

    Affiliation as printed

    Physik-Institut, Universität Zürich, Zürich, Switzerland

79. F. Betti

    European Organization for Nuclear Research

    Affiliation as printed

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

80. Ia. Bezshyiko

    University of Zurich

    Affiliation as printed

    Physik-Institut, Universität Zürich, Zürich, Switzerland

81. J. Bhom

    Institute of Nuclear Physics, Polish Academy of Sciences

    Affiliation as printed

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

82. L. Bian

    Wuhan University

    Affiliation as printed

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

83. M. S. Bieker

    TU Dortmund University

    Affiliation as printed

    Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany

84. N. V. Biesuz

    Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara

    Affiliation as printed

    INFN Sezione di Ferrara, Ferrara, Italy

85. 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

    Affiliation as printed

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

86. Alice Biolchini

    National Institute for Subatomic Physics

    Affiliation as printed

    Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands

87. M. Birch

    Imperial College London

    Affiliation as printed

    Imperial College London, London, United Kingdom

88. F. C. R. Bishop

    University of Cambridge

    Affiliation as printed

    Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom

89. A. Bitadze

    University of Manchester

    Affiliation as printed

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

90. A. Bizzeti
91. Michele Piero Blago

    University of Cambridge

    Affiliation as printed

    Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom

92. T. Blake

    University of Warwick

    Affiliation as printed

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

93. F. Blanc

    École Polytechnique Fédérale de Lausanne

    Affiliation as printed

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

94. J. E. Blank

    TU Dortmund University

    Affiliation as printed

    Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany

95. Steven Roy Blusk

    Syracuse University

    Affiliation as printed

    Syracuse University, Syracuse, NY, United States

96. D. Bobulska

    University of Glasgow

    Affiliation as printed

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

97. J. A. Boelhauve

    TU Dortmund University

    Affiliation as printed

    Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany

98. O. Boente García

    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

    Affiliation as printed

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

99. T. Boettcher

    University of Cincinnati

    Affiliation as printed

    University of Cincinnati, Cincinnati, OH, United States