Searches for physics beyond the standard model with the $$M_{\mathrm {T2}}$$ variable in hadronic final states with and without disappearing tracks in proton–proton collisions at $$\sqrt{s}=13\,\text {Te}\text {V} $$

The European Physical Journal C, vol. 80, pp. 3

Abstract

Abstract Two related searches for phenomena beyond the standard model (BSM) are performed using events with hadronic jets and significant transverse momentum imbalance. The results are based on a sample of proton–proton collisions at a center-of-mass energy of $$13\,\text {Te}\text {V} $$ 13Te , collected by the CMS experiment at the LHC in 2016–2018 and corresponding to an integrated luminosity of 137 $$\,\text {fb}^{-1}$$ fb-1 . The first search is inclusive, based on signal regions defined by the hadronic energy in the event, the jet multiplicity, the number of jets identified as originating from bottom quarks, and the value of the kinematic variable $$M_{\mathrm {T2}}$$ MT2 for events with at least two jets. For events with exactly one jet, the transverse momentum of the jet is used instead. The second search looks in addition for disappearing tracks produced by BSM long-lived charged particles that decay within the volume of the tracking detector. No excess event yield is observed above the predicted standard model background. This is used to constrain a range of BSM models that predict the following: the pair production of gluinos and squarks in the context of supersymmetry models conserving R-parity, with or without intermediate long-lived charginos produced in the decay chain; the resonant production of a colored scalar state decaying to a massive Dirac fermion and a quark; or the pair production of scalar and vector leptoquarks each decaying to a neutrino and a top, bottom, or light-flavor quark. In most of the cases, the results obtained are the most stringent constraints to date.

Authors 100

1. A. M. Sirunyan

   A. Alikhanyan National Laboratory

   Affiliation as printed

   Yerevan Physics Institute, Yerevan, Armenia

2. A. Tumasyan

   A. Alikhanyan National Laboratory

   Affiliation as printed

   Yerevan Physics Institute, Yerevan, Armenia

3. W. Adam

   Institute of High Energy Physics

   Affiliation as printed

   Institut für Hochenergiephysik, Wien, Austria

4. F. Ambrogi

   Institute of High Energy Physics

   Affiliation as printed

   Institut für Hochenergiephysik, Wien, Austria

5. T. Bergauer

   Institute of High Energy Physics

   Affiliation as printed

   Institut für Hochenergiephysik, Wien, Austria

6. J. Brandstetter

   Institute of High Energy Physics

   Affiliation as printed

   Institut für Hochenergiephysik, Wien, Austria

7. M. Dragicevic

   Institute of High Energy Physics

   Affiliation as printed

   Institut für Hochenergiephysik, Wien, Austria

8. J. Erö

   Institute of High Energy Physics

   Affiliation as printed

   Institut für Hochenergiephysik, Wien, Austria

9. A. Escalante Del Valle

   Institute of High Energy Physics

   Affiliation as printed

   Institut für Hochenergiephysik, Wien, Austria

10. M. Flechl

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik, Wien, Austria

11. Rudolf Konrad Fruhwirth

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik, Wien, Austria

12. M. Jeitler

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik, Wien, Austria

13. Natascha Krammer

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik, Wien, Austria

14. Ilse Krätschmer

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik, Wien, Austria

15. Dietrich Liko

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik, Wien, Austria

16. T. Madlener

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik, Wien, Austria

17. I. Mikulec

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik, Wien, Austria

18. Navid K. Rad

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik, Wien, Austria

19. J. Schieck

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik, Wien, Austria

20. R. Schöfbeck

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik, Wien, Austria

21. M. Spanring

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik, Wien, Austria

22. Daniel Spitzbart

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik, Wien, Austria

23. W. Waltenberger

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik, Wien, Austria

24. C.-E. Wulz

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik, Wien, Austria

25. M. Zarucki

    Institute of High Energy Physics

    Affiliation as printed

    Institut für Hochenergiephysik, Wien, Austria

26. V. Drugakov
    Affiliation as printed

    Institute for Nuclear Problems, Minsk, Belarus

27. V. Mossolov
    Affiliation as printed

    Institute for Nuclear Problems, Minsk, Belarus

28. J. Suarez Gonzalez
    Affiliation as printed

    Institute for Nuclear Problems, Minsk, Belarus

29. M. R. Darwish

    University of Antwerp

    Affiliation as printed

    Universiteit Antwerpen, Antwerpen, Belgium

30. E. A. De Wolf

    University of Antwerp

    Affiliation as printed

    Universiteit Antwerpen, Antwerpen, Belgium

31. D. Di Croce

    University of Antwerp

    Affiliation as printed

    Universiteit Antwerpen, Antwerpen, Belgium

32. X. Janssen

    University of Antwerp

    Affiliation as printed

    Universiteit Antwerpen, Antwerpen, Belgium

33. A. Lelek

    University of Antwerp

    Affiliation as printed

    Universiteit Antwerpen, Antwerpen, Belgium

34. M. Pieters

    University of Antwerp

    Affiliation as printed

    Universiteit Antwerpen, Antwerpen, Belgium

35. Haifa Rejeb Sfar

    University of Antwerp

    Affiliation as printed

    Universiteit Antwerpen, Antwerpen, Belgium

36. H. Van Haevermaet

    University of Antwerp

    Affiliation as printed

    Universiteit Antwerpen, Antwerpen, Belgium

37. P. Van Mechelen

    University of Antwerp

    Affiliation as printed

    Universiteit Antwerpen, Antwerpen, Belgium

38. Senne Van Putte

    University of Antwerp

    Affiliation as printed

    Universiteit Antwerpen, Antwerpen, Belgium

39. N. Van Remortel

    University of Antwerp

    Affiliation as printed

    Universiteit Antwerpen, Antwerpen, Belgium

40. F. Blekman

    Vrije Universiteit Brussel

    Affiliation as printed

    Vrije Universiteit Brussel, Brussel, Belgium

41. E. S. Bols

    Vrije Universiteit Brussel

    Affiliation as printed

    Vrije Universiteit Brussel, Brussel, Belgium

42. S. S. Chhibra

    Vrije Universiteit Brussel

    Affiliation as printed

    Vrije Universiteit Brussel, Brussel, Belgium

43. J. D’Hondt

    Vrije Universiteit Brussel

    Affiliation as printed

    Vrije Universiteit Brussel, Brussel, Belgium

44. J. De Clercq

    Vrije Universiteit Brussel

    Affiliation as printed

    Vrije Universiteit Brussel, Brussel, Belgium

45. D. Lontkovskyi

    Vrije Universiteit Brussel

    Affiliation as printed

    Vrije Universiteit Brussel, Brussel, Belgium

46. S. Lowette

    Vrije Universiteit Brussel

    Affiliation as printed

    Vrije Universiteit Brussel, Brussel, Belgium

47. I. Marchesini

    Vrije Universiteit Brussel

    Affiliation as printed

    Vrije Universiteit Brussel, Brussel, Belgium

48. S. Moortgat

    Vrije Universiteit Brussel

    Affiliation as printed

    Vrije Universiteit Brussel, Brussel, Belgium

49. Q. Python

    Vrije Universiteit Brussel

    Affiliation as printed

    Vrije Universiteit Brussel, Brussel, Belgium

50. K. Skovpen

    Vrije Universiteit Brussel

    Affiliation as printed

    Vrije Universiteit Brussel, Brussel, Belgium

51. S. Tavernier

    Vrije Universiteit Brussel

    Affiliation as printed

    Vrije Universiteit Brussel, Brussel, Belgium

52. W. Van Doninck

    Vrije Universiteit Brussel

    Affiliation as printed

    Vrije Universiteit Brussel, Brussel, Belgium

53. P. Van Mulders

    Vrije Universiteit Brussel

    Affiliation as printed

    Vrije Universiteit Brussel, Brussel, Belgium

54. John Christopher Beghin

    Université Libre de Bruxelles

    Affiliation as printed

    Université Libre de Bruxelles, Bruxelles, Belgium

55. B. Bilin

    Université Libre de Bruxelles

    Affiliation as printed

    Université Libre de Bruxelles, Bruxelles, Belgium

56. H. Brun

    Université Libre de Bruxelles

    Affiliation as printed

    Université Libre de Bruxelles, Bruxelles, Belgium

57. B. Clerbaux

    Université Libre de Bruxelles

    Affiliation as printed

    Université Libre de Bruxelles, Bruxelles, Belgium

58. G. De Lentdecker

    Université Libre de Bruxelles

    Affiliation as printed

    Université Libre de Bruxelles, Bruxelles, Belgium

59. H. Delannoy

    Université Libre de Bruxelles

    Affiliation as printed

    Université Libre de Bruxelles, Bruxelles, Belgium

60. B. Dorney

    Université Libre de Bruxelles

    Affiliation as printed

    Université Libre de Bruxelles, Bruxelles, Belgium

61. L. Favart

    Université Libre de Bruxelles

    Affiliation as printed

    Université Libre de Bruxelles, Bruxelles, Belgium

62. A. Grebenyuk

    Université Libre de Bruxelles

    Affiliation as printed

    Université Libre de Bruxelles, Bruxelles, Belgium

63. A. K. Kalsi

    Université Libre de Bruxelles

    Affiliation as printed

    Université Libre de Bruxelles, Bruxelles, Belgium

64. A. Popov

    Université Libre de Bruxelles

    Affiliation as printed

    Université Libre de Bruxelles, Bruxelles, Belgium

65. N. Postiau

    Université Libre de Bruxelles

    Affiliation as printed

    Université Libre de Bruxelles, Bruxelles, Belgium

66. Elizabeth Rose Starling

    Université Libre de Bruxelles

    Affiliation as printed

    Université Libre de Bruxelles, Bruxelles, Belgium

67. L. Thomas

    Université Libre de Bruxelles

    Affiliation as printed

    Université Libre de Bruxelles, Bruxelles, Belgium

68. C. Vander Velde

    Université Libre de Bruxelles

    Affiliation as printed

    Université Libre de Bruxelles, Bruxelles, Belgium

69. Pascal Vanlaer

    Université Libre de Bruxelles

    Affiliation as printed

    Université Libre de Bruxelles, Bruxelles, Belgium

70. David Vannerom

    Université Libre de Bruxelles

    Affiliation as printed

    Université Libre de Bruxelles, Bruxelles, Belgium

71. T. Cornelis

    Ghent University

    Affiliation as printed

    Ghent University, Ghent, Belgium

72. D. Dobur

    Ghent University

    Affiliation as printed

    Ghent University, Ghent, Belgium

73. I. Khvastunov

    Ghent University

    Affiliation as printed

    Ghent University, Ghent, Belgium

74. M. Niedziela

    Ghent University

    Affiliation as printed

    Ghent University, Ghent, Belgium

75. C. Roskas

    Ghent University

    Affiliation as printed

    Ghent University, Ghent, Belgium

76. Daniele Trocino

    Ghent University

    Affiliation as printed

    Ghent University, Ghent, Belgium

77. M. Tytgat

    Ghent University

    Affiliation as printed

    Ghent University, Ghent, Belgium

78. W. Verbeke

    Ghent University

    Affiliation as printed

    Ghent University, Ghent, Belgium

79. B. Vermassen

    Ghent University

    Affiliation as printed

    Ghent University, Ghent, Belgium

80. Martina Vit

    Ghent University

    Affiliation as printed

    Ghent University, Ghent, Belgium

81. Olivier Bondu

    UCLouvain

    Affiliation as printed

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

82. G. Bruno

    UCLouvain

    Affiliation as printed

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

83. C. Caputo

    UCLouvain

    Affiliation as printed

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

84. P. David

    UCLouvain

    Affiliation as printed

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

85. Christophe Delaere

    UCLouvain

    Affiliation as printed

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

86. M. Delcourt

    UCLouvain

    Affiliation as printed

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

87. ANDREA GIAMMANCO

    UCLouvain

    Affiliation as printed

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

88. V. Lemaı̂tre

    UCLouvain

    Affiliation as printed

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

89. J. Prisciandaro

    UCLouvain

    Affiliation as printed

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

90. Alessia Saggio

    UCLouvain

    Affiliation as printed

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

91. M. Vidal Marono

    UCLouvain

    Affiliation as printed

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

92. P. Vischia

    UCLouvain

    Affiliation as printed

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

93. J. Zobec

    UCLouvain

    Affiliation as printed

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

94. F. L. Alves

    Centro Brasileiro de Pesquisas Físicas

    Affiliation as printed

    Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Brazil

95. Gilvan Augusto Alves

    Centro Brasileiro de Pesquisas Físicas

    Affiliation as printed

    Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Brazil

96. G. Correia Silva

    Centro Brasileiro de Pesquisas Físicas

    Affiliation as printed

    Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Brazil

97. C. Hensel

    Centro Brasileiro de Pesquisas Físicas

    Affiliation as printed

    Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Brazil

98. Arthur M. Moraes

    Centro Brasileiro de Pesquisas Físicas

    Affiliation as printed

    Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Brazil

99. P. Rebello Teles

    Centro Brasileiro de Pesquisas Físicas

    Affiliation as printed

    Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Brazil

100. E. Belchior Batista Das Chagas

     Universidade do Estado do Rio de Janeiro

     Affiliation as printed

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