4.7 Article

Measurement of the energy density as a function of pseudorapidity in proton-proton collisions at √s=13 TeV

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EUROPEAN PHYSICAL JOURNAL C
卷 79, 期 5, 页码 -

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SPRINGER
DOI: 10.1140/epjc/s10052-019-6861-x

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资金

  1. BMBWF (Austria)
  2. FWF (Austria)
  3. FNRS (Belgium)
  4. FWO (Belgium)
  5. CNPq (Brazil)
  6. CAPES (Brazil)
  7. FAPERJ (Brazil)
  8. FAPERGS (Brazil)
  9. FAPESP (Brazil)
  10. MES (Bulgaria)
  11. CERN
  12. CAS (China)
  13. MoST (China)
  14. NSFC (China)
  15. COLCIENCIAS (Colombia)
  16. MSES (Croatia)
  17. CSF (Croatia)
  18. RPF (Cyprus)
  19. SENESCYT (Ecuador)
  20. MoER (Estonia)
  21. ERC IUT (Estonia)
  22. ERDF (Estonia)
  23. Academy of Finland (Finland)
  24. MEC (Finland)
  25. HIP (Finland)
  26. CEA (France)
  27. CNRS/IN2P3 (France)
  28. BMBF (Germany)
  29. DFG (Germany)
  30. HGF (Germany)
  31. GSRT (Greece)
  32. NKFIA (Hungary)
  33. DAE (India)
  34. DST (India)
  35. IPM (Iran)
  36. SFI (Ireland)
  37. INFN (Italy)
  38. MSIP (Republic of Korea)
  39. NRF (Republic of Korea)
  40. MES (Latvia)
  41. LAS (Lithuania)
  42. MOE (Malaysia)
  43. UM (Malaysia)
  44. BUAP (Mexico)
  45. CINVESTAV (Mexico)
  46. CONACYT (Mexico)
  47. LNS (Mexico)
  48. SEP (Mexico)
  49. UASLP-FAI (Mexico)
  50. MOS (Montenegro)
  51. MBIE (New Zealand)
  52. PAEC (Pakistan)
  53. MSHE (Poland)
  54. NSC (Poland)
  55. FCT (Portugal)
  56. JINR (Dubna)
  57. MON (Russia)
  58. RosAtom (Russia)
  59. RAS (Russia)
  60. RFBR (Russia)
  61. NRC KI (Russia)
  62. MESTD (Serbia)
  63. SEIDI (Spain)
  64. CPAN (Spain)
  65. PCTI (Spain)
  66. FEDER (Spain)
  67. MOSTR (Sri Lanka)
  68. MST (Taipei)
  69. ThEPCenter (Thailand)
  70. IPST (Thailand)
  71. STAR (Thailand)
  72. NSTDA (Thailand)
  73. TUBITAK (Turkey)
  74. TAEK (Turkey)
  75. NASU (Ukraine)
  76. SFFR (Ukraine)
  77. STFC (United Kingdom)
  78. DOE (USA)
  79. NSF (USA)
  80. Marie-Curie programme (European Union)
  81. European Research Council (European Union)
  82. Horizon 2020 Grant (European Union) [675440]
  83. Leventis Foundation
  84. A. P. Sloan Foundation
  85. Alexander von Humboldt Foundation
  86. Belgian Federal Science Policy Office
  87. Fonds pour la Formation a la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium)
  88. Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium)
  89. F.R.S.-FNRS (Belgium)
  90. FWO (Belgium) [30820817]
  91. Ministry of Education, Youth and Sports (MEYS) of the Czech Republic
  92. Hungarian Academy of Sciences (Hungary)
  93. New National Excellence Program UNKP (Hungary)
  94. NKFIA (Hungary) [123842, 123959, 124845, 124850, 125105]
  95. Council of Science and Industrial Research, India
  96. HOMING PLUS programme of the Foundation for Polish Science
  97. European Union, Regional Development Fund
  98. Mobility Plus programme of the Ministry of Science and Higher Education
  99. National Science Center (Poland) [Harmonia 2014/14/M/ST2/00428, Opus 2014/13/B/ST2/02543, 2014/15/B/ST2/03998, 2015/19/B/ST2/02861, Sonata-bis 2012/07/E/ST2/01406]
  100. National Priorities Research Program by Qatar National Research Fund
  101. Programa Estatal de Fomento de la Investigacion Cientifica y Tecnica de Excelencia Maria de Maeztu [MDM-2015-0509]
  102. Programa Severo Ochoa del Principado de Asturias
  103. Thalis programme
  104. Aristeia programme
  105. EU-ESF
  106. Greek NSRF
  107. Rachadapisek Sompot Fund for Postdoctoral Fellowship, Chulalongkorn University (Thailand)
  108. Chulalongkorn Academic into Its 2nd Century Project Advancement Project (Thailand)
  109. Welch Foundation [C-1845]
  110. Weston Havens Foundation (USA)
  111. STFC [ST/N000242/1] Funding Source: UKRI
  112. Science and Technology Facilities Council [ST/N000242/1] Funding Source: researchfish

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A measurement of the energy density in proton-proton collisions at a centre-of-mass energy of sTeV is presented. The data have been recorded with the CMS experiment at the LHC during low luminosity operations in 2015. The energy density is studied as a function of pseudorapidity in the ranges -6.6<<-5.2 and 3.15<||<5.20. The results are compared with the predictions of several models. All the models considered suggest a different shape of the pseudorapidity dependence compared to that observed in the data. A comparison with LHC proton-proton collision data at s=0.9 and 7 TeV confirms the compatibility of the data with the hypothesis of limiting fragmentation.

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