Study of charm hadronization with prompt $$ {\Lambda}_{\textrm{c}}^{+} $$ baryons in proton-proton and lead-lead collisions at $$ \sqrt{s_{\textrm{NN}}} $$ = 5.02 TeV

Journal of High Energy Physics, vol. 2024

Abstract

A bstract The production of prompt $$ {\Lambda}_{\textrm{c}}^{+} $$ Λ c + baryons is measured via the exclusive decay channel $$ {\Lambda}_{\textrm{c}}^{+}\to p{\textrm{K}}^{-}{\pi}^{+} $$ Λ c + → p K − π + at a center-of-mass energy per nucleon pair of 5.02 TeV, using proton-proton (pp) and lead-lead (PbPb) collision data collected by the CMS experiment at the CERN LHC. The pp and PbPb data were obtained in 2017 and 2018 with integrated luminosities of 252 and 0.607 nb − 1 , respectively. The measurements are performed within the $$ {\Lambda}_{\textrm{c}}^{+} $$ Λ c + rapidity interval | y | < 1 with transverse momentum ( p T ) ranges of 3–30 and 6–40 GeV/ c for pp and PbPb collisions, respectively. Compared to the yields in pp collisions scaled by the expected number of nucleon-nucleon interactions, the observed yields of $$ {\Lambda}_{\textrm{c}}^{+} $$ Λ c + with p T > 10 GeV/ c are strongly suppressed in PbPb collisions. The level of suppression depends significantly on the collision centrality. The $$ {\Lambda}_{\textrm{c}}^{+} $$ Λ c + / D 0 production ratio is similar in PbPb and pp collisions at p T > 10 GeV/ c , suggesting that the coalescence process does not play a dominant role in prompt $$ {\Lambda}_{\textrm{c}}^{+} $$ Λ c + baryon production at higher p T .

Authors 100

1. A. Tumasyan

   A. Alikhanyan National Laboratory · Yerevan State University

   Affiliation as printed

   Yerevan Physics Institute

   Yerevan State University

2. W. Adam

   Institute of High Energy Physics

   Affiliation as printed

   Institut für Hochenergiephysik

3. Janik Walter Andrejkovic

   Institute of High Energy Physics

   Affiliation as printed

   Institut für Hochenergiephysik

4. T. Bergauer

   Institute of High Energy Physics

   Affiliation as printed

   Institut für Hochenergiephysik

5. Suman Chatterjee

   Indian Institute of Technology Madras · Institute of High Energy Physics

   Affiliation as printed

   Indian Institute of Technology Madras

   Institut für Hochenergiephysik

6. K. Damanakis

   Institute of High Energy Physics

   Affiliation as printed

   Institut für Hochenergiephysik

7. M. Dragicevic

   Institute of High Energy Physics

   Affiliation as printed

   Institut für Hochenergiephysik

8. A. Escalante Del Valle

   Institute of High Energy Physics

   Affiliation as printed

   Institut für Hochenergiephysik

9. Priya Sajid Hussain

   Institute of High Energy Physics

   Affiliation as printed

   Institut für Hochenergiephysik

10. M. Jeitler

    TU Wien · Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik

    TU Wien

11. Natascha Krammer

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik

12. L. Lechner

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik

13. Dietrich Liko

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik

14. I. Mikulec

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik

15. P. Paulitsch

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik

16. J. Schieck

    TU Wien · Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik

    TU Wien

17. R. Schöfbeck

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik

18. Dennis Schwarz

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik

19. M. Sonawane

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik

20. S. Templ

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik

21. W. Waltenberger

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik

22. C.-E. Wulz

    TU Wien · Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik

    TU Wien

23. M. R. Darwish

    University of Antwerp · Arab Academy for Science, Technology, and Maritime Transport

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    Arab Academy for Science, Technology and Maritime Transport

    Universiteit Antwerpen

24. X. Janssen

    University of Antwerp

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    Universiteit Antwerpen

25. Tomas Kello

    Université Libre de Bruxelles · University of Antwerp

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    Universiteit Antwerpen

    Université Libre de Bruxelles

26. P. Van Mechelen

    University of Antwerp

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    Universiteit Antwerpen

27. E. S. Bols

    Vrije Universiteit Brussel

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    Vrije Universiteit Brussel

28. J. D’Hondt

    Vrije Universiteit Brussel

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    Vrije Universiteit Brussel

29. A. De Moor

    Vrije Universiteit Brussel

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    Vrije Universiteit Brussel

30. M. Delcourt

    Vrije Universiteit Brussel

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    Vrije Universiteit Brussel

31. H. El Faham

    Vrije Universiteit Brussel

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    Vrije Universiteit Brussel

32. S. Lowette

    Vrije Universiteit Brussel

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    Vrije Universiteit Brussel

33. A. Morton

    Vrije Universiteit Brussel

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    Vrije Universiteit Brussel

34. D. Müller

    Vrije Universiteit Brussel

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    Vrije Universiteit Brussel

35. Abanti Ranadhir Sahasransu

    Vrije Universiteit Brussel

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    Vrije Universiteit Brussel

36. S. Tavernier

    Vrije Universiteit Brussel

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    Vrije Universiteit Brussel

37. Walter Van Doninck

    Vrije Universiteit Brussel

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    Vrije Universiteit Brussel

38. Senne Van Putte

    Vrije Universiteit Brussel

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    Vrije Universiteit Brussel

39. David Vannerom

    Vrije Universiteit Brussel

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    Vrije Universiteit Brussel

40. B. Clerbaux

    Université Libre de Bruxelles

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    Université Libre de Bruxelles

41. Soumya Dansana

    Université Libre de Bruxelles

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    Université Libre de Bruxelles

42. G. De Lentdecker

    Université Libre de Bruxelles

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    Université Libre de Bruxelles

43. L. Favart

    Université Libre de Bruxelles

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    Université Libre de Bruxelles

44. D. Hohov

    Université Libre de Bruxelles

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    Université Libre de Bruxelles

45. J. Jaramillo

    Université Libre de Bruxelles

    Affiliation as printed

    Université Libre de Bruxelles

46. Kyeongpil Lee

    Université Libre de Bruxelles · Korea University

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    Korea University

    Université Libre de Bruxelles

47. M. Mahdavikhorrami

    Université Libre de Bruxelles

    Affiliation as printed

    Université Libre de Bruxelles

48. Inna Makarenko

    Université Libre de Bruxelles

    Affiliation as printed

    Université Libre de Bruxelles

49. Andrea Malara

    Université Libre de Bruxelles

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    Université Libre de Bruxelles

50. S. R. Paredes Saenz

    Université Libre de Bruxelles

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    Université Libre de Bruxelles

51. L. Pétré

    Université Libre de Bruxelles

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    Université Libre de Bruxelles

52. Nicolas Postiau

    Université Libre de Bruxelles

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    Université Libre de Bruxelles

53. Laurent Thomas

    Université Libre de Bruxelles

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    Université Libre de Bruxelles

54. M. Vanden Bemden

    Université Libre de Bruxelles

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    Université Libre de Bruxelles

55. Catherine Vander Velde

    Université Libre de Bruxelles

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    Université Libre de Bruxelles

56. Pascal Vanlaer

    Université Libre de Bruxelles

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    Université Libre de Bruxelles

57. D. Dobur

    Ghent University

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    Ghent University

58. J. Knolle

    Ghent University

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    Ghent University

59. Luka Lambrecht

    Ghent University

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    Ghent University

60. Gianny Mestdach

    Ghent University

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    Ghent University

61. César Rendón

    Ghent University

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    Ghent University

62. Amrutha Samalan

    Ghent University

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    Ghent University

63. K. Skovpen

    Ghent University

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    Ghent University

64. M. Tytgat

    Ghent University

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    Ghent University

65. N. Van Den Bossche

    Ghent University

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    Ghent University

66. B. Vermassen

    Ghent University

    Affiliation as printed

    Ghent University

67. Liam Wezenbeek

    Ghent University

    Affiliation as printed

    Ghent University

68. A. Benecke

    UCLouvain

    Affiliation as printed

    Université Catholique de Louvain

69. G. Bruno

    UCLouvain

    Affiliation as printed

    Université Catholique de Louvain

70. F. Bury

    UCLouvain

    Affiliation as printed

    Université Catholique de Louvain

71. C. Caputo

    UCLouvain

    Affiliation as printed

    Université Catholique de Louvain

72. P. David

    UCLouvain

    Affiliation as printed

    Université Catholique de Louvain

73. Christophe Delaere

    UCLouvain

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    Université Catholique de Louvain

74. I. S. Donertas

    UCLouvain

    Affiliation as printed

    Université Catholique de Louvain

75. ANDREA GIAMMANCO

    UCLouvain

    Affiliation as printed

    Université Catholique de Louvain

76. K. Jaffel

    UCLouvain

    Affiliation as printed

    Université Catholique de Louvain

77. Sa. Jain

    Rutherford Appleton Laboratory · UCLouvain

    Affiliation as printed

    Rutherford Appleton Laboratory

    Université Catholique de Louvain

78. Vincent Lemaître

    UCLouvain

    Affiliation as printed

    Université Catholique de Louvain

79. Kuntal Mondal

    UCLouvain

    Affiliation as printed

    Université Catholique de Louvain

80. Angela Taliercio

    UCLouvain

    Affiliation as printed

    Université Catholique de Louvain

81. T. T. Tran

    UCLouvain

    Affiliation as printed

    Université Catholique de Louvain

82. P. Vischia

    UCLouvain

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    Université Catholique de Louvain

83. S. Wertz

    UCLouvain

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    Université Catholique de Louvain

84. Gilvan Augusto Alves

    Centro Brasileiro de Pesquisas Físicas

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    Centro Brasileiro de Pesquisas Fisicas

85. E. Coelho

    Centro Brasileiro de Pesquisas Físicas

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    Centro Brasileiro de Pesquisas Fisicas

86. C. Hensel

    Centro Brasileiro de Pesquisas Físicas

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    Centro Brasileiro de Pesquisas Fisicas

87. Arthur M. Moraes

    Centro Brasileiro de Pesquisas Físicas

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    Centro Brasileiro de Pesquisas Fisicas

88. P. Rebello Teles

    Centro Brasileiro de Pesquisas Físicas

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    Centro Brasileiro de Pesquisas Fisicas

89. W. L. Aldá Júnior

    Universidade do Estado do Rio de Janeiro

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    Universidade do Estado do Rio de Janeiro

90. M. Alves Gallo Pereira

    Universidade do Estado do Rio de Janeiro

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    Universidade do Estado do Rio de Janeiro

91. M. Barroso Ferreira Filho

    Universidade do Estado do Rio de Janeiro

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    Universidade do Estado do Rio de Janeiro

92. H. Brandao Malbouisson

    Universidade do Estado do Rio de Janeiro

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    Universidade do Estado do Rio de Janeiro

93. W. Carvalho

    Universidade do Estado do Rio de Janeiro

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    Universidade do Estado do Rio de Janeiro

94. J. Chinellato

    Universidade Estadual de Campinas (UNICAMP) · Universidade do Estado do Rio de Janeiro

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    Universidade Estadual de Campinas

    Universidade do Estado do Rio de Janeiro

95. E. M. Da Costa

    Universidade do Estado do Rio de Janeiro

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    Universidade do Estado do Rio de Janeiro

96. G. G. Da Silveira

    Universidade Federal do Rio Grande do Sul · Universidade do Estado do Rio de Janeiro

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    Federal University of Rio Grande do Sul

    Universidade do Estado do Rio de Janeiro

97. D. De Jesus Damião

    Universidade do Estado do Rio de Janeiro

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    Universidade do Estado do Rio de Janeiro

98. V. Dos Santos Sousa

    Universidade do Estado do Rio de Janeiro

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    Universidade do Estado do Rio de Janeiro

99. S. Fonseca De Souza

    Universidade do Estado do Rio de Janeiro

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    Universidade do Estado do Rio de Janeiro

100. J. Martins

     Universidade Federal de Mato Grosso do Sul · Universidade do Estado do Rio de Janeiro

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     UFMS

     Universidade do Estado do Rio de Janeiro