Article open access publication

Search for heavy particles decaying into top-quark pairs using lepton-plus-jets events in proton–proton collisions at s=13 TeV with the ATLAS detector

European Physical Journal C, Springer Nature, ISSN 1434-6044

Volume 78, 7, 2018

DOI:10.1140/epjc/s10052-018-5995-6, Dimensions: pub.1105437325, PMC: PMC6191020, PMID: 30395135,

Authors

* Corresponding author

Affiliations

Organisations

  1. (1) Mohamed I University, grid.410890.4
  2. (2) Center for Particle Physics of Marseilles, grid.470046.1
  3. (3) University of Oklahoma, grid.266900.b
  4. (4) Institute of Physics, grid.435347.2
  5. (5) Laboratoire de l'Accélérateur Linéaire, grid.462450.1
  6. (6) University of Toronto, grid.17063.33
  7. (7) University of California, Santa Cruz, grid.205975.c
  8. (8) University of Sussex, grid.12082.39
  9. (9) Tel Aviv University, grid.12136.37
  10. (10) Technion – Israel Institute of Technology, grid.6451.6
  11. (11) Argonne National Laboratory, grid.187073.a
  12. (12) International Centre for Theoretical Physics, grid.419330.c
  13. (13) INFN Sezione di Trieste, grid.470223.0
  14. (14) University of Tokyo, grid.26999.3d
  15. (15) AGH University of Science and Technology, grid.9922.0
  16. (16) Northern Illinois University, grid.261128.e
  17. (17) Ludwig Maximilian University of Munich, grid.5252.0
  18. (18) Boğaziçi University, grid.11220.30
  19. (19) Rutherford Appleton Laboratory, grid.76978.37
  20. (20) Alexandru Ioan Cuza University, grid.8168.7
  21. (21) University of Granada, grid.4489.1
  22. (22) Laboratory of Instrumentation and Experimental Particles Physics, grid.420929.4
  23. (23) Joint Institute for Nuclear Research, grid.33762.33
  24. (24) INFN Sezione di Roma II, grid.470219.9
  25. (25) University of Rome Tor Vergata, grid.6530.0
  26. (26) Kyoto University, grid.258799.8
  27. (27) Lund University, grid.4514.4
  28. (28) University of Geneva, grid.8591.5
  29. (29) P.N. Lebedev Physical Institute of the Russian Academy of Sciences, grid.425806.d
  30. (30) INFN Sezione di Bologna, grid.470193.8
  31. (31) University of Bologna, grid.6292.f
  32. (32) University of Victoria, grid.143640.4
  33. (33) National Laboratory of Frascati, grid.463190.9
  34. (34) Instituto de Física La Plata, grid.450288.3
  35. (35) Radboud University Nijmegen, grid.5590.9
  36. (36) European Organization for Nuclear Research, grid.9132.9
  37. (37) Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering, grid.443874.8
  38. (38) National Technical University of Athens, grid.4241.3
  39. (39) Czech Technical University in Prague, grid.6652.7
  40. (40) INFN Sezione di Lecce, grid.470680.d
  41. (41) University of Salento, grid.9906.6
  42. (42) INFN Sezione di Milano, grid.470206.7
  43. (43) University of Chicago, grid.170205.1
  44. (44) University of Washington, grid.34477.33
  45. (45) University of Oregon, grid.170202.6
  46. (46) University of Birmingham, grid.6572.6
  47. (47) INFN Sezione di Napoli, grid.470211.1
  48. (48) University of Naples Federico II, grid.4691.a
  49. (49) University of Copenhagen, grid.5254.6, KU
  50. (50) University of Glasgow, grid.8756.c
  51. (51) Institute for Corpuscular Physics, grid.470047.0
  52. (52) Lawrence Berkeley National Laboratory, grid.184769.5
  53. (53) Federal University of Rio de Janeiro, grid.8536.8
  54. (54) University of Oxford, grid.4991.5
  55. (55) Brandeis University, grid.253264.4
  56. (56) University of Michigan, grid.214458.e
  57. (57) University of Coimbra, grid.8051.c
  58. (58) University of Sheffield, grid.11835.3e
  59. (59) The University of Texas at Austin, grid.89336.37
  60. (60) Heidelberg University, grid.7700.0
  61. (61) University of Bern, grid.5734.5
  62. (62) University of Milan, grid.4708.b
  63. (63) University of Clermont Auvergne, grid.494717.8
  64. (64) Nikhef National Institute for Subatomic Physics, University of Amsterdam, Amsterdam, The Netherlands
  65. (65) Columbia University, grid.21729.3f
  66. (66) Budker Institute of Nuclear Physics, grid.418495.5
  67. (67) Novosibirsk State University, grid.4605.7
  68. (68) INFN Sezione di Pisa, grid.470216.6
  69. (69) University of California, Irvine, grid.266093.8
  70. (70) INFN Sezione di Roma I, grid.470218.8
  71. (71) High Energy Accelerator Research Organization, grid.410794.f
  72. (72) Michigan State University, grid.17088.36
  73. (73) Duke University, grid.26009.3d
  74. (74) Royal Holloway University of London, grid.4970.a
  75. (75) University of Montreal, grid.14848.31
  76. (76) University of Iowa, grid.214572.7
  77. (77) Queen Mary University of London, grid.4868.2
  78. (78) University of Cambridge, grid.5335.0
  79. (79) University of Bonn, grid.10388.32
  80. (80) Institute for Theoretical and Experimental Physics, grid.21626.31
  81. (81) Johannes Gutenberg University of Mainz, grid.5802.f
  82. (82) DESY, grid.7683.a
  83. (83) Uppsala University, grid.8993.b
  84. (84) Brookhaven National Laboratory, grid.202665.5
  85. (85) Comenius University, grid.7634.6
  86. (86) University of Cape Town, grid.7836.a
  87. (87) University of Illinois at Urbana Champaign, grid.35403.31
  88. (88) University of Siegen, grid.5836.8
  89. (89) University of Science and Technology of China, grid.59053.3a
  90. (90) Institute of High Energy Physics, grid.418741.f
  91. (91) Institut de Recherches sur les Lois Fondamentales de l'Univers, DSM/IRFU, CEA Saclay, Gif-sur-Yvette, France
  92. (92) Sapienza University of Rome, grid.7841.a
  93. (93) Institute of Nuclear Physics Polish Academy of Sciences, grid.418860.3
  94. (94) Simon Fraser University, grid.61971.38
  95. (95) Yale University, grid.47100.32
  96. (96) Louisiana Tech University, grid.259237.8
  97. (97) Weizmann Institute of Science, grid.13992.30
  98. (98) University of Pennsylvania, grid.25879.31
  99. (99) University of Wisconsin System, grid.28803.31
  100. (100) University of Wuppertal, grid.7787.f
  101. (101) University of Melbourne, grid.1008.9
  102. (102) INFN Sezione di Genova, grid.470205.4
  103. (103) University of Genoa, grid.5606.5
  104. (104) Max Planck Institute for Physics, grid.435824.c
  105. (105) SLAC National Accelerator Laboratory, grid.445003.6
  106. (106) Shanghai Jiao Tong University, grid.16821.3c
  107. (107) INFN Sezione di Roma III, grid.470220.3
  108. (108) Autonomous University of Madrid, grid.5515.4
  109. (109) Lancaster University, grid.9835.7
  110. (110) Petersburg Nuclear Physics Institute, grid.430219.d
  111. (111) Mohammed V University, grid.31143.34
  112. (112) The Ohio State University, grid.261331.4
  113. (113) Laboratoire Physique nucléaire et Hautes Energies, grid.463935.e
  114. (114) Tufts University, grid.429997.8
  115. (115) University of Göttingen, grid.7450.6
  116. (116) University of Freiburg, grid.5963.9
  117. (117) New York University, grid.137628.9
  118. (118) Gaziantep University, grid.411549.c
  119. (119) Bahçeşehir University, grid.10359.3e
  120. (120) Stony Brook University, grid.36425.36
  121. (121) University College London, grid.83440.3b
  122. (122) Carleton University, grid.34428.39
  123. (123) Moscow Engineering Physics Institute, grid.183446.c
  124. (124) University of Hassan II Casablanca, grid.412148.a
  125. (125) LAPP, Université Grenoble Alpes, Université Savoie Mont Blanc, CNRS/IN2P3, Annecy, France
  126. (126) Laboratory of Subatomic Physics and Cosmology, grid.472561.3
  127. (127) University of Massachusetts Amherst, grid.266683.f
  128. (128) Stockholm University, grid.10548.38
  129. (129) University of Manchester, grid.5379.8
  130. (130) University of Pittsburgh, grid.21925.3d
  131. (131) Humboldt University of Berlin, grid.7468.d
  132. (132) University of Pisa, grid.5395.a
  133. (133) TU Dresden, grid.4488.0
  134. (134) Boston University, grid.189504.1
  135. (135) Pontifical Catholic University of Chile, grid.7870.8
  136. (136) Lomonosov Moscow State University, grid.14476.30
  137. (137) Institute for High Energy Physics, grid.424823.b
  138. (138) Institut de Física d'Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Barcelona, Spain
  139. (139) University of Buenos Aires, grid.7345.5
  140. (140) The University of Texas at Arlington, grid.267315.4
  141. (141) Tokyo Metropolitan University, grid.265074.2
  142. (142) Federico Santa María Technical University, grid.12148.3e
  143. (143) Institute of Experimental Physics, grid.435184.f
  144. (144) University of Bergen, grid.7914.b
  145. (145) University of Oslo, grid.5510.1
  146. (146) University of Liverpool, grid.10025.36
  147. (147) TU Dortmund University, grid.5675.1
  148. (148) Institute of Physics, Academia Sinica, grid.482252.b
  149. (149) University at Albany, State University of New York, grid.265850.c
  150. (150) Ankara University, grid.7256.6
  151. (151) Indiana University Bloomington, grid.411377.7
  152. (152) University of Calabria, grid.7778.f
  153. (153) Oklahoma State University, grid.65519.3e
  154. (154) Charles University, grid.4491.8
  155. (155) University of Johannesburg, grid.412988.e
  156. (156) University of Minho, grid.10328.38
  157. (157) Istanbul Bilgi University, grid.24956.3c
  158. (158) Roma Tre University, grid.8509.4
  159. (159) Universidade Federal de Juiz de Fora, grid.411198.4
  160. (160) Harvard University, grid.38142.3c
  161. (161) Chinese University of Hong Kong, grid.10784.3a
  162. (162) TRIUMF, grid.232474.4
  163. (163) Iowa State University, grid.34421.30
  164. (164) Nanjing University, grid.41156.37
  165. (165) Tsinghua University, grid.12527.33
  166. (166) Kobe University, grid.31432.37
  167. (167) University of Chinese Academy of Sciences, grid.410726.6
  168. (168) University of Arizona, grid.134563.6
  169. (169) National Tsing Hua University, grid.38348.34
  170. (170) Aristotle University of Thessaloniki, grid.4793.9
  171. (171) Institute of Physics, grid.424881.3
  172. (172) McGill University, grid.14709.3b
  173. (173) Palacký University, Olomouc, grid.10979.36
  174. (174) University of Ljubljana, grid.8954.0
  175. (175) University of Edinburgh, grid.4305.2
  176. (176) University of Udine, grid.5390.f
  177. (177) University of Lisbon, grid.9983.b
  178. (178) University of British Columbia, grid.17091.3e
  179. (179) Shandong University, grid.27255.37
  180. (180) University of Alberta, grid.17089.37
  181. (181) Tbilisi State University, grid.26193.3f
  182. (182) Federal University of São João del-Rei, grid.428481.3
  183. (183) University of Sao Paulo, grid.11899.38
  184. (184) University of Giessen, grid.8664.c
  185. (185) University of Adelaide, grid.1010.0
  186. (186) Cadi Ayyad University, grid.411840.8
  187. (187) University of Warwick, grid.7372.1
  188. (188) INFN Sezione di Pavia, grid.470213.3
  189. (189) University of Pavia, grid.8982.b
  190. (190) National and Kapodistrian University of Athens, grid.5216.0
  191. (191) Southern Methodist University, grid.263864.d
  192. (192) Nagasaki Institute of Applied Science, grid.444367.6
  193. (193) West University of Timişoara, grid.14004.31
  194. (194) University of New Mexico, grid.266832.b
  195. (195) University of Tsukuba, grid.20515.33
  196. (196) Alikhanyan National Laboratory, grid.48507.3e
  197. (197) University of Würzburg, grid.8379.5
  198. (198) BI Stepanov Institute of Physics, grid.426545.4
  199. (199) Shinshu University, grid.263518.b
  200. (200) University of the Witwatersrand, grid.11951.3d
  201. (201) Osaka University, grid.136593.b
  202. (202) Nagoya University, grid.27476.30
  203. (203) Belarusian State University, grid.17678.3f
  204. (204) Waseda University, grid.5290.e
  205. (205) Tokyo Institute of Technology, grid.32197.3e
  206. (206) INFN-TIFPA, Trento, Italy
  207. (207) University of Trento, grid.11696.39
  208. (208) The University of Texas at Dallas, grid.267323.1
  209. (209) University of Innsbruck, grid.5771.4
  210. (210) York University, grid.21100.32
  211. (211) Royal Institute of Technology, grid.5037.1
  212. (212) Kyushu University, grid.177174.3
  213. (213) Tomsk State University, grid.77602.34
  214. (214) University of Belgrade, grid.7149.b
  215. (215) Istanbul Aydın University, grid.449300.a
  216. (216) Tsung-Dao Lee Institute, Shanghai, China
  217. (217) Hong Kong University of Science and Technology, grid.24515.37
  218. (218) University of Sydney, grid.1013.3
  219. (219) Academia Sinica, grid.28665.3f
  220. (220) University of Hong Kong, grid.194645.b
  221. (221) Universidad Antonio Nariño, grid.440783.c
  222. (222) Hiroshima Institute of Technology, grid.417545.6
  223. (223) Okayama University, grid.261356.5
  224. (224) Jagiellonian University, grid.5522.0
  225. (225) National Institute for Research and Development of Isotopic and Molecular Technologies, grid.435410.7
  226. (226) Institut National de Physique Nucléaire et de Physique des Particules, grid.433124.3
  227. (227) TOBB University of Economics and Technology, grid.412749.d
  228. (228) Kyoto University of Education, grid.411219.e
  229. (229) Transylvania University of Brașov, grid.5120.6
  230. (230) National Centre for Nuclear Energy, Science and Technology, grid.450269.c
  231. (231) Polytechnic University of Bucharest, grid.4551.5
  232. (232) Universidade Nova de Lisboa, grid.10772.33

Description

A search for new heavy particles that decay into top-quark pairs is performed using data collected from proton-proton collisions at a centre-of-mass energy of 13  TeV by the ATLAS detector at the Large Hadron Collider. The integrated luminosity of the data sample is 36.1 fb - 1 . Events consistent with top-quark pair production are selected by requiring a single isolated charged lepton, missing transverse momentum and jet activity compatible with a hadronic top-quark decay. Jets identified as likely to contain b-hadrons are required to reduce the background from other Standard Model processes. The invariant mass spectrum of the candidate top-quark pairs is examined for local excesses above the background expectation. No significant deviations from the Standard Model predictions are found. Exclusion limits are set on the production cross-section times branching ratio for hypothetical Z ' bosons, Kaluza-Kein gluons and Kaluza-Klein gravitons that decay into top-quark pairs.

Funders

Research Categories

Main Subject Area

Fields of Research

Links & Metrics

NORA University Profiles

University of Copenhagen

Dimensions Citation Indicators

Times Cited: 19

Field Citation Ratio (FCR): 13.64

Relative Citation ratio (RCR): 0

Open Access Info

Pure Gold