A search for flavour changing neutral currents in top-quark decays in pp collision data collected with the ATLAS detector at √s = 7 TeV
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, Journal Article
Aad, G; Abbott, B; Abdallah, J; Abdel Khalek, S; Abdelalim, AA; Abdinov, O; Abi, B; Abolins, M; AbouZeid, OS; Abramowicz, H; Abreu, H; Adye, T ...
Published in: Journal of High Energy Physics
September 1, 2012
A search for flavour changing neutral current (FCNC) processes in top-quark decays by the ATLAS Collaboration is presented. Data collected from pp collisions at the LHC at a centre-of-mass energy of √s = 7 TeV during 2011, corresponding to an integrated luminosity of 2.1 fb-1, were used. A search was performed for top-quark pair-production events, with one top quark decaying through the t → Zq FCNC (q = u, c) channel, and the other through the Standard Model dominant mode t → Wb. Only the decays of the Z boson to charged leptons and leptonic W-boson decays were considered as signal. Consequently, the final-state topology is characterised by the presence of three isolated charged leptons, at least two jets and missing transverse momentum from the undetected neutrino. No evidence for an FCNC signal was found. An upper limit on the t → Zq branching ratio of BR(t → Zq) < 0.73% is set at the 95% confidence level. Copyright CERN.
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Published In
Journal of High Energy Physics
DOI
EISSN
1029-8479
ISSN
1126-6708
Publication Date
September 1, 2012
Volume
2012
Issue
9
Start / End Page
1 / 36
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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Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdelalim, A. A., Abdinov, O., … Artoni, G. (2012). A search for flavour changing neutral currents in top-quark decays in pp collision data collected with the ATLAS detector at √s = 7 TeV. Journal of High Energy Physics, 2012(9), 1–36. https://doi.org/10.1007/JHEP09(2012)139
Aad, G., B. Abbott, J. Abdallah, S. Abdel Khalek, A. A. Abdelalim, O. Abdinov, B. Abi, et al. “A search for flavour changing neutral currents in top-quark decays in pp collision data collected with the ATLAS detector at √s = 7 TeV.” Journal of High Energy Physics 2012, no. 9 (September 1, 2012): 1–36. https://doi.org/10.1007/JHEP09(2012)139.
Aad G, Abbott B, Abdallah J, Abdel Khalek S, Abdelalim AA, Abdinov O, et al. A search for flavour changing neutral currents in top-quark decays in pp collision data collected with the ATLAS detector at √s = 7 TeV. Journal of High Energy Physics. 2012 Sep 1;2012(9):1–36.
Aad, G., et al. “A search for flavour changing neutral currents in top-quark decays in pp collision data collected with the ATLAS detector at √s = 7 TeV.” Journal of High Energy Physics, vol. 2012, no. 9, Sept. 2012, pp. 1–36. Scopus, doi:10.1007/JHEP09(2012)139.
Aad G, Abbott B, Abdallah J, Abdel Khalek S, Abdelalim AA, Abdinov O, Abi B, Abolins M, AbouZeid OS, Abramowicz H, Abreu H, Acerbi E, Acharya BS, Adamczyk L, Adams DL, Addy TN, Adelman J, Adomeit S, Adragna P, Adye T, Aefsky S, Aguilar-Saavedra JA, Agustoni M, Aharrouche M, Ahlen SP, Ahles F, Ahmad A, Ahsan M, Aielli G, Akdogan T, Åkesson TPA, Akimoto G, Akimov AV, Alam MS, Alam MA, Albert J, Albrand S, Aleksa M, Aleksandrov IN, Alessandria F, Alexa C, Alexander G, Alexandre G, Alexopoulos T, Alhroob M, Aliev M, Alimonti G, Alison J, Allbrooke BMM, Allport PP, Allwood-Spiers SE, Almond J, Aloisio A, Alon R, Alonso A, Alvarez Gonzalez B, Alviggi MG, Amako K, Amelung C, Ammosov VV, Amorim A, Amram N, Anastopoulos C, Ancu LS, Andari N, Andeen T, Anders CF, Anders G, Anderson KJ, Andreazza A, Andrei V, Anduaga XS, Anger P, Angerami A, Anghinolfi F, Anisenkov A, Anjos N, Annovi A, Antonaki A, Antonelli M, Antonov A, Antos J, Anulli F, Aoun S, Aperio Bella L, Apolle R, Arabidze G, Aracena I, Arai Y, Arce ATH, Arfaoui S, Arguin JF, Arik E, Arik M, Armbruster AJ, Arnaez O, Arnal V, Arnault C, Artamonov A, Artoni G. A search for flavour changing neutral currents in top-quark decays in pp collision data collected with the ATLAS detector at √s = 7 TeV. Journal of High Energy Physics. 2012 Sep 1;2012(9):1–36.
Published In
Journal of High Energy Physics
DOI
EISSN
1029-8479
ISSN
1126-6708
Publication Date
September 1, 2012
Volume
2012
Issue
9
Start / End Page
1 / 36
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