Pileup mitigation at CMS in 13 TeV data

Journal of Instrumentation, vol. 15, pp. P09018

Abstract

With increasing instantaneous luminosity at the LHC come additional reconstruction challenges.At high luminosity, many collisions occur simultaneously within one proton-proton bunch crossing.The isolation of an interesting collision from the additional "pileup" collisions is needed for effective physics performance.In the CMS Collaboration, several techniques capable of mitigating the impact of these pileup collisions have been developed.Such methods include charged-hadron subtraction, pileup jet identification, isospin-based neutral particle "δβ" correction, and, most recently, pileup per particle identification.This paper surveys the performance of these techniques for jet and missing transverse momentum reconstruction, as well as muon isolation.The analysis makes use of data corresponding to 35.9 fb -1 collected with the CMS experiment in 2016 at a center-of-mass energy of 13 TeV.The performance of each algorithm is discussed for up to 70 simultaneous collisions per bunch crossing.Significant improvements are found in the identification of pileup jets, the jet energy, mass, and angular resolution, missing transverse momentum resolution, and muon isolation when using pileup per particle identification.

Authors 100

1. Albert M. Sirunyan

   A. Alikhanyan National Laboratory · University of Zurich

   Affiliation as printed

   University of Zurich University

   Yerevan Physics Institute, Yerevan, Armenia

2. A. Tumasyan

   A. Alikhanyan National Laboratory

   Affiliation as printed

   The CMS collaboration Yerevan Physics Institute , Yerevan , Armenia

   Yerevan Physics Institute, Yerevan, Armenia

3. W. Adam

   A. Alikhanyan National Laboratory · Institute of High Energy Physics

   Affiliation as printed

   The CMS collaboration Yerevan Physics Institute , Yerevan , Armenia

   Institut für Hochenergiephysik, Wien, Austria

4. F. Ambrogi

   Institute of High Energy Physics

   Affiliation as printed

   Institut für Hochenergiephysik , Wien , Austria

   Institut für Hochenergiephysik, Wien, Austria

5. T. Bergauer

   Institute of High Energy Physics

   Affiliation as printed

   Institut für Hochenergiephysik , Wien , Austria

   Institut für Hochenergiephysik, Wien, Austria

6. M. Dragicevic

   Institute of High Energy Physics

   Affiliation as printed

   Institut für Hochenergiephysik , Wien , Austria

   Institut für Hochenergiephysik, Wien, Austria

7. J. Erö

   Institute of High Energy Physics

   Affiliation as printed

   Institut für Hochenergiephysik , Wien , Austria

   Institut für Hochenergiephysik, Wien, Austria

8. A. Escalante Del Valle

   Institute of High Energy Physics

   Affiliation as printed

   Institut für Hochenergiephysik, Wien, Austria

9. M. Flechl

   Institute of High Energy Physics

   Affiliation as printed

   Institut für Hochenergiephysik , Wien , Austria

   Institut für Hochenergiephysik, Wien, Austria

10. Rudolf Konrad Fruhwirth

    A. Alikhanyan National Laboratory · Institute of High Energy Physics

    Affiliation as printed

    The CMS collaboration Yerevan Physics Institute , Yerevan , Armenia

    Institut für Hochenergiephysik, Wien, Austria

11. M. Jeitler

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik , Wien , Austria

    Institut für Hochenergiephysik, Wien, Austria

12. Natascha Krammer

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik , Wien , Austria

    Institut für Hochenergiephysik, Wien, Austria

13. Ilse Krätschmer

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik , Wien , Austria

    Institut für Hochenergiephysik, Wien, Austria

14. D. Liko

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik , Wien , Austria

    Institut für Hochenergiephysik, Wien, Austria

15. T. Madlener

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik , Wien , Austria

    Institut für Hochenergiephysik, Wien, Austria

16. I. Mikulec

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik , Wien , Austria

    Institut für Hochenergiephysik, Wien, Austria

17. Navid K. Rad

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik , Wien , Austria

    Institut für Hochenergiephysik, Wien, Austria

18. J. Schieck

    Institute of High Energy Physics

    Affiliation as printed

    Institute for Nuclear Problems , Minsk , Belarus

    Institut für Hochenergiephysik, Wien, Austria

19. R. Schöfbeck

    Institute of High Energy Physics

    Affiliation as printed

    Institute for Nuclear Problems , Minsk , Belarus

    Institut für Hochenergiephysik, Wien, Austria

20. M. Spanring

    Institute of High Energy Physics

    Affiliation as printed

    Institute for Nuclear Problems , Minsk , Belarus

    Institut für Hochenergiephysik, Wien, Austria

21. W. Waltenberger

    Institute of High Energy Physics

    Affiliation as printed

    Institute for Nuclear Problems , Minsk , Belarus

    Institut für Hochenergiephysik, Wien, Austria

22. C.-E. Wulz

    Institute of High Energy Physics

    Affiliation as printed

    Institute for Nuclear Problems , Minsk , Belarus

    Institut für Hochenergiephysik, Wien, Austria

23. M. Zarucki

    Institute of High Energy Physics

    Affiliation as printed

    Institute for Nuclear Problems , Minsk , Belarus

    Institut für Hochenergiephysik, Wien, Austria

24. V. Drugakov

    University of Antwerp

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    Universiteit Antwerpen , Antwerpen , Belgium

    Institute for Nuclear Problems, Minsk, Belarus

25. V. Mossolov
    Affiliation as printed

    Institute for Nuclear Problems , Minsk , Belarus

    Institute for Nuclear Problems, Minsk, Belarus

26. J. Suarez Gonzalez
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    Institute for Nuclear Problems , Minsk , Belarus

    Institute for Nuclear Problems, Minsk, Belarus

27. M. R. Darwish

    University of Antwerp

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    Universiteit Antwerpen , Antwerpen , Belgium

    Universiteit Antwerpen, Antwerpen, Belgium

28. E. A. De Wolf

    University of Antwerp

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    Universiteit Antwerpen , Antwerpen , Belgium

    Universiteit Antwerpen, Antwerpen, Belgium

29. D. Di Croce

    University of Antwerp

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    Universiteit Antwerpen, Antwerpen, Belgium

30. X. Janssen

    University of Antwerp

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    Universiteit Antwerpen , Antwerpen , Belgium

    Universiteit Antwerpen, Antwerpen, Belgium

31. A. Lelek

    University of Antwerp

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    Universiteit Antwerpen , Antwerpen , Belgium

    Universiteit Antwerpen, Antwerpen, Belgium

32. M. Pieters

    University of Antwerp

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    Universiteit Antwerpen , Antwerpen , Belgium

    Universiteit Antwerpen, Antwerpen, Belgium

33. Haifa Rejeb Sfar

    University of Antwerp

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    Universiteit Antwerpen , Antwerpen , Belgium

    Universiteit Antwerpen, Antwerpen, Belgium

34. H. Van Haevermaet

    Vrije Universiteit Brussel · University of Antwerp

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    Vrije Universiteit Brussel , Brussel , Belgium

    Universiteit Antwerpen, Antwerpen, Belgium

35. P. Van Mechelen

    Vrije Universiteit Brussel · University of Antwerp

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    Vrije Universiteit Brussel , Brussel , Belgium

    Universiteit Antwerpen, Antwerpen, Belgium

36. Senne Van Putte

    University of Antwerp

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    Universiteit Antwerpen , Antwerpen , Belgium

    Universiteit Antwerpen, Antwerpen, Belgium

37. N. Van Remortel

    University of Antwerp

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    Universiteit Antwerpen , Antwerpen , Belgium

    Universiteit Antwerpen, Antwerpen, Belgium

38. F. Blekman

    Vrije Universiteit Brussel

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    Vrije Universiteit Brussel , Brussel , Belgium

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39. E. S. Bols

    Vrije Universiteit Brussel

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    Vrije Universiteit Brussel , Brussel , Belgium

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40. S. S. Chhibra

    Vrije Universiteit Brussel

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    Vrije Universiteit Brussel , Brussel , Belgium

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41. J. D’Hondt

    Université Libre de Bruxelles · Vrije Universiteit Brussel

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    Université Libre de Bruxelles , Bruxelles , Belgium

    Vrije Universiteit Brussel, Brussel, Belgium

42. J. De Clercq

    Université Libre de Bruxelles · Vrije Universiteit Brussel

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    Université Libre de Bruxelles , Bruxelles , Belgium

    Vrije Universiteit Brussel, Brussel, Belgium

43. D. Lontkovskyi

    Université Libre de Bruxelles · Vrije Universiteit Brussel

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    Université Libre de Bruxelles , Bruxelles , Belgium

    Vrije Universiteit Brussel, Brussel, Belgium

44. S. Lowette

    Vrije Universiteit Brussel · UCLouvain

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    Université Catholique de Louvain , Louvain-la-Neuve , Belgium

    Vrije Universiteit Brussel, Brussel, Belgium

45. I. Marchesini

    Vrije Universiteit Brussel

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    Vrije Universiteit Brussel , Brussel , Belgium

    Vrije Universiteit Brussel, Brussel, Belgium

46. S. Moortgat

    Vrije Universiteit Brussel

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    Vrije Universiteit Brussel , Brussel , Belgium

    Vrije Universiteit Brussel, Brussel, Belgium

47. Q. Python

    Université Libre de Bruxelles · Vrije Universiteit Brussel

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    Université Libre de Bruxelles , Bruxelles , Belgium

    Vrije Universiteit Brussel, Brussel, Belgium

48. K. Skovpen

    Université Libre de Bruxelles · Vrije Universiteit Brussel

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    Université Libre de Bruxelles , Bruxelles , Belgium

    Vrije Universiteit Brussel, Brussel, Belgium

49. S. Tavernier

    Université Libre de Bruxelles · Vrije Universiteit Brussel

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    Université Libre de Bruxelles , Bruxelles , Belgium

    Vrije Universiteit Brussel, Brussel, Belgium

50. W. Van Doninck

    Université Libre de Bruxelles · Vrije Universiteit Brussel

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    Université Libre de Bruxelles , Bruxelles , Belgium

    Vrije Universiteit Brussel, Brussel, Belgium

51. P. Van Mulders

    Vrije Universiteit Brussel

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    Vrije Universiteit Brussel, Brussel, Belgium

52. D. Beghin

    Université Libre de Bruxelles · Ghent University

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    Ghent University , Ghent , Belgium

    Université Libre de Bruxelles, Bruxelles, Belgium

53. B. Bilin

    Université Libre de Bruxelles

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    Université Libre de Bruxelles , Bruxelles , Belgium

    Université Libre de Bruxelles, Bruxelles, Belgium

54. B. Clerbaux

    Université Libre de Bruxelles

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    Université Libre de Bruxelles , Bruxelles , Belgium

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55. G. De Lentdecker

    Université Libre de Bruxelles

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    Université Libre de Bruxelles , Bruxelles , Belgium

    Université Libre de Bruxelles, Bruxelles, Belgium

56. H. Delannoy

    Université Libre de Bruxelles · UCLouvain

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    Université Catholique de Louvain , Louvain-la-Neuve , Belgium

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57. B. Dorney

    Université Libre de Bruxelles · UCLouvain

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    Université Catholique de Louvain , Louvain-la-Neuve , Belgium

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    Université Libre de Bruxelles · UCLouvain

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    Université Catholique de Louvain , Louvain-la-Neuve , Belgium

    Université Libre de Bruxelles, Bruxelles, Belgium

59. A. Grebenyuk

    Université Libre de Bruxelles · Ghent University

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    Ghent University , Ghent , Belgium

    Université Libre de Bruxelles, Bruxelles, Belgium

60. A. K. Kalsi

    Université Libre de Bruxelles

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    Université Libre de Bruxelles , Bruxelles , Belgium

    Université Libre de Bruxelles, Bruxelles, Belgium

61. L. Moureaux

    Université Libre de Bruxelles

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    Université Libre de Bruxelles , Bruxelles , Belgium

    Université Libre de Bruxelles, Bruxelles, Belgium

62. A. Popov

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    Université Catholique de Louvain , Louvain-la-Neuve , Belgium

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63. N. Postiau

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    Université Catholique de Louvain , Louvain-la-Neuve , Belgium

    Université Libre de Bruxelles, Bruxelles, Belgium

64. Elizabeth Rose Starling

    Université Libre de Bruxelles · UCLouvain

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    Université Catholique de Louvain , Louvain-la-Neuve , Belgium

    Université Libre de Bruxelles, Bruxelles, Belgium

65. L. Thomas

    Université Libre de Bruxelles · UCLouvain

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    Université Catholique de Louvain , Louvain-la-Neuve , Belgium

    Université Libre de Bruxelles, Bruxelles, Belgium

66. C. Vander Velde

    Université Libre de Bruxelles

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    Université Libre de Bruxelles, Bruxelles, Belgium

67. Pascal Vanlaer

    Université Libre de Bruxelles · Ghent University

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    Ghent University , Ghent , Belgium

    Université Libre de Bruxelles, Bruxelles, Belgium

68. David Vannerom

    Université Libre de Bruxelles

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    Université Libre de Bruxelles , Bruxelles , Belgium

    Université Libre de Bruxelles, Bruxelles, Belgium

69. T. Cornelis

    Ghent University

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    Ghent University , Ghent , Belgium

    Ghent University, Ghent, Belgium

70. D. Dobur

    Ghent University

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    Ghent University , Ghent , Belgium

    Ghent University, Ghent, Belgium

71. I. Khvastunov

    Ghent University

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    Ghent University , Ghent , Belgium

    Ghent University, Ghent, Belgium

72. M. Niedziela

    Ghent University · UCLouvain

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    Université Catholique de Louvain , Louvain-la-Neuve , Belgium

    Ghent University, Ghent, Belgium

73. C. Roskas

    Ghent University · UCLouvain

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    Université Catholique de Louvain , Louvain-la-Neuve , Belgium

    Ghent University, Ghent, Belgium

74. M. Tytgat

    Ghent University · UCLouvain

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    Université Catholique de Louvain , Louvain-la-Neuve , Belgium

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75. W. Verbeke

    Ghent University · UCLouvain

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    Université Catholique de Louvain , Louvain-la-Neuve , Belgium

    Ghent University, Ghent, Belgium

76. B. Vermassen

    Ghent University

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    Ghent University , Ghent , Belgium

    Ghent University, Ghent, Belgium

77. M. Vit

    Ghent University

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    Ghent University , Ghent , Belgium

    Ghent University, Ghent, Belgium

78. O. Bondu

    Ghent University · UCLouvain

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    Ghent University , Ghent , Belgium

    Université Catholique de Louvain, Louvain-la-Neuve, Belgium

79. G. Bruno

    Ghent University · UCLouvain

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    Ghent University , Ghent , Belgium

    Université Catholique de Louvain, Louvain-la-Neuve, Belgium

80. C. Caputo

    UCLouvain

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    Université Catholique de Louvain , Louvain-la-Neuve , Belgium

    Université Catholique de Louvain, Louvain-la-Neuve, Belgium

81. P. David

    UCLouvain

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    Université Catholique de Louvain, Louvain-la-Neuve, Belgium

82. Christophe Delaere

    UCLouvain

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    Université Catholique de Louvain , Louvain-la-Neuve , Belgium

    Université Catholique de Louvain, Louvain-la-Neuve, Belgium

83. M. Delcourt

    UCLouvain

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84. ANDREA GIAMMANCO

    UCLouvain

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    Université Catholique de Louvain , Louvain-la-Neuve , Belgium

    Université Catholique de Louvain, Louvain-la-Neuve, Belgium

85. V. Lemaitre

    Universidade Federal do ABC · UCLouvain

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    Universidade Federal do ABC b , São Paulo , Brazil

    Université Catholique de Louvain, Louvain-la-Neuve, Belgium

86. J. Prisciandaro

    Ghent University · UCLouvain

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    Ghent University , Ghent , Belgium

    Université Catholique de Louvain, Louvain-la-Neuve, Belgium

87. A. Saggio

    Centro Brasileiro de Pesquisas Físicas · UCLouvain

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    Centro Brasileiro de Pesquisas Fisicas , Rio de Janeiro , Brazil

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88. M. Vidal Marono

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    Centro Brasileiro de Pesquisas Fisicas , Rio de Janeiro , Brazil

    Université Catholique de Louvain, Louvain-la-Neuve, Belgium

89. P. Vischia

    UCLouvain

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    Université Catholique de Louvain , Louvain-la-Neuve , Belgium

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90. J. Zobec

    UCLouvain

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91. F. L. Alves

    Ghent University · Centro Brasileiro de Pesquisas Físicas

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    Ghent University , Ghent , Belgium

    Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Brazil

92. Gilvan Augusto Alves

    Centro Brasileiro de Pesquisas Físicas

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    Centro Brasileiro de Pesquisas Fisicas , Rio de Janeiro , Brazil

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93. G. Correia Silva

    Centro Brasileiro de Pesquisas Físicas

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    Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Brazil

94. C. Hensel

    Universidade do Estado do Rio de Janeiro · Centro Brasileiro de Pesquisas Físicas

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    Universidade do Estado do Rio de Janeiro , Rio de Janeiro , Brazil

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95. Arthur M. Moraes

    Universidade do Estado do Rio de Janeiro · Centro Brasileiro de Pesquisas Físicas

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96. P. Rebello Teles

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97. E. Belchior Batista Das Chagas

    Universidade do Estado do Rio de Janeiro

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    Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil

98. W. Carvalho

    Universidade do Estado do Rio de Janeiro

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99. J. Chinellato

    Universidade do Estado do Rio de Janeiro

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100. E. Coelho

     Universidade do Estado do Rio de Janeiro · Universidade Federal do ABC

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     Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil