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Search for heavy Majorana neutrinos with the ATLAS detector in pp collisions at √s = 8 TeV

Publication ,  Journal Article
The ATLAS collaboration, ; Aad, G; Abbott, B; Abdallah, J; Abdel Khalek, S; Abdinov, O; Aben, R; Abi, B; Abolins, M; AbouZeid, OS; Abreu, H ...
Published in: Journal of High Energy Physics
July 5, 2015

Abstract: A search for heavy Majorana neutrinos in events containing a pair of high-pT leptons of the same charge and high-pT jets is presented. The search uses 20.3 fb−1 of pp collision data collected with the ATLAS detector at the CERN Large Hadron Collider with a centre-of-mass energy of 221as = 8 TeV. The data are found to be consistent with the background-only hypothesis based on the Standard Model expectation. In the context of a Type-I seesaw mechanism, limits are set on the production cross-section times branching ratio for production of heavy Majorana neutrinos in the mass range between 100 and 500 GeV. The limits are subsequently interpreted as limits on the mixing between the heavy Majorana neutrinos and the Standard Model neutrinos. In the context of a left-right symmetric model, limits on the production cross-section times branching ratio are set with respect to the masses of heavy Majorana neutrinos and heavy gauge bosons WR and Z′.[Figure not available: see fulltext.]

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Published In

Journal of High Energy Physics

DOI

EISSN

1029-8479

Publication Date

July 5, 2015

Volume

2015

Issue

7

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5106 Nuclear and plasma physics
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0105 Mathematical Physics
 

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The ATLAS collaboration, ., Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., … Arnold, H. (2015). Search for heavy Majorana neutrinos with the ATLAS detector in pp collisions at √s = 8 TeV. Journal of High Energy Physics, 2015(7). https://doi.org/10.1007/JHEP07(2015)162
The ATLAS collaboration, Anna Mae, G. Aad, B. Abbott, J. Abdallah, S. Abdel Khalek, O. Abdinov, R. Aben, et al. “Search for heavy Majorana neutrinos with the ATLAS detector in pp collisions at √s = 8 TeV.” Journal of High Energy Physics 2015, no. 7 (July 5, 2015). https://doi.org/10.1007/JHEP07(2015)162.
The ATLAS collaboration, Aad G, Abbott B, Abdallah J, Abdel Khalek S, Abdinov O, et al. Search for heavy Majorana neutrinos with the ATLAS detector in pp collisions at √s = 8 TeV. Journal of High Energy Physics. 2015 Jul 5;2015(7).
The ATLAS collaboration, Anna Mae, et al. “Search for heavy Majorana neutrinos with the ATLAS detector in pp collisions at √s = 8 TeV.” Journal of High Energy Physics, vol. 2015, no. 7, July 2015. Scopus, doi:10.1007/JHEP07(2015)162.
The ATLAS collaboration, Aad G, Abbott B, Abdallah J, Abdel Khalek S, Abdinov O, Aben R, Abi B, Abolins M, AbouZeid OS, Abramowicz H, Abreu H, Abreu R, Abulaiti Y, Acharya BS, Adamczyk L, Adams DL, Adelman J, Adomeit S, Adye T, Agatonovic-Jovin T, Aguilar-Saavedra JA, Agustoni M, Ahlen SP, Ahmadov F, Aielli G, Akerstedt H, Åkesson TPA, Akimoto G, Akimov AV, Alberghi GL, Albert J, Albrand S, Alconada Verzini MJ, Aleksa M, Aleksandrov IN, Alexa C, Alexander G, Alexandre G, Alexopoulos T, Alhroob M, Alimonti G, Alio L, Alison J, Allbrooke BMM, Allison LJ, Allport PP, Almond J, Aloisio A, Alonso A, Alonso F, Alpigiani C, Altheimer A, Alvarez Gonzalez B, Alviggi MG, Amako K, Amaral Coutinho Y, Amelung C, Amidei D, Amor Dos Santos SP, Amorim A, Amoroso S, Amram N, Amundsen G, Anastopoulos C, Ancu LS, Andari N, Andeen T, Anders CF, Anders G, Anderson KJ, Andreazza A, Andrei V, Anduaga XS, Angelidakis S, Angelozzi I, Anger P, Angerami A, Anghinolfi F, Anisenkov AV, Anjos N, Annovi A, Antonelli M, Antonov A, Antos J, Anulli F, Aoki M, Aperio Bella L, Arabidze G, Arai Y, Araque JP, Arce ATH, Arduh FA, Arguin JF, Argyropoulos S, Arik M, Armbruster AJ, Arnaez O, Arnal V, Arnold H. Search for heavy Majorana neutrinos with the ATLAS detector in pp collisions at √s = 8 TeV. Journal of High Energy Physics. 2015 Jul 5;2015(7).
Journal cover image

Published In

Journal of High Energy Physics

DOI

EISSN

1029-8479

Publication Date

July 5, 2015

Volume

2015

Issue

7

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5106 Nuclear and plasma physics
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0105 Mathematical Physics