A search for flavour changing neutral currents in top-quark decays in pp collision data collected with the ATLAS detector at root s=7 TeV
2012
Аутори
Aad, G.Borjanović, Iris
Božović-Jelisavčić, Ivanka
Ćirković, Predrag
Agatonović-Jovin, Tatjana
Krstić, Jelena
Marnuzic, J.
Popović, D. S.
Sijacki, Dj.
Simić, Lj.
Vranješ, Nenad
Vranješ Milosavljević, Marija
Živković, Lada
ATLAS Collaboration (ukupan broj autora: 2865)
Чланак у часопису
Метаподаци
Приказ свих података о документуАпстракт
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 root 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 - GT Zq FCNC (q = u, c) channel, and the other through the Standard Model dominant mode t - GT 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 - GT Zq branching ratio of BR(t - GT Zq) LT 0.73% is set at the 95% confidence level.
Кључне речи:
Hadron Hadron Scattering / Top Physics / Rare Decays / Flavour Changing Neutral CurrentsИзвор:
Journal of High Energy Physics, 2012, 9Финансирање / пројекти:
- ANPCyT, Argentina, YerPhI, Armenia, ARC, Australia, BMWF, Austria, ANAS, Azerbaijan, SSTC, Belarus, CNPq, FAPESP, Brazil, NSERC, NRC, CFI, Canada, CERN, CONICYT, Chile, CAS, MOST, NSFC, China, COLCIENCIAS, Colombia, MSMT CR, MPO CR, VSC CR, Czech Republic, DNRF, DNSRC, Lundbeck Foundation, Denmark, EPLANET, ERC, European Union, IN2P3-CNRS, CEA-DSM/IRFU, France, GNAS, Georgia, BMBF, Germany, DFG, HGF, MPG, AvH Foundation, Germany, GSRT, Greece, ISF, MINERVA, GIF, DIP, Benoziyo Center, Israel, INFN, Italy, MEXT, JSPS, Japan, CNRST, Morocco, FOM, NWO, Netherlands, RCN, Norway, MNiSW, Poland, GRICES, FCT, Portugal, MERYS (MECTS), Romania, MES of Russia, ROSATOM, Russian Federation, JINR, MSTD, Serbia, MSSR, Slovakia, ARRS, MVZT, Slovenia, DST/NRF, South Africa, MICINN, Spain, SRC, Wallenberg Foundation, Sweden, SER, SNSF, Canton of Bern, Switzerland, Canton of Geneva, Switzerland, NSC, Taiwan, TAEK, Turkey, STFC, Royal Society, Leverhulme Trust, United Kingdom, DOE, NSF, United States of America, ICREA
DOI: 10.1007/JHEP09(2012)139
ISSN: 1029-8479
WoS: 000310341200001
Scopus: 2-s2.0-84887646230
Колекције
Институција/група
VinčaTY - JOUR AU - Aad, G. AU - Borjanović, Iris AU - Božović-Jelisavčić, Ivanka AU - Ćirković, Predrag AU - Agatonović-Jovin, Tatjana AU - Krstić, Jelena AU - Marnuzic, J. AU - Popović, D. S. AU - Sijacki, Dj. AU - Simić, Lj. AU - Vranješ, Nenad AU - Vranješ Milosavljević, Marija AU - Živković, Lada PY - 2012 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5117 AB - 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 root 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 - GT Zq FCNC (q = u, c) channel, and the other through the Standard Model dominant mode t - GT 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 - GT Zq branching ratio of BR(t - GT Zq) LT 0.73% is set at the 95% confidence level. T2 - Journal of High Energy Physics T1 - A search for flavour changing neutral currents in top-quark decays in pp collision data collected with the ATLAS detector at root s=7 TeV IS - 9 DO - 10.1007/JHEP09(2012)139 ER -
@article{ author = "Aad, G. and Borjanović, Iris and Božović-Jelisavčić, Ivanka and Ćirković, Predrag and Agatonović-Jovin, Tatjana and Krstić, Jelena and Marnuzic, J. and Popović, D. S. and Sijacki, Dj. and Simić, Lj. and Vranješ, Nenad and Vranješ Milosavljević, Marija and Živković, Lada", year = "2012", abstract = "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 root 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 - GT Zq FCNC (q = u, c) channel, and the other through the Standard Model dominant mode t - GT 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 - GT Zq branching ratio of BR(t - GT Zq) LT 0.73% is set at the 95% confidence level.", journal = "Journal of High Energy Physics", title = "A search for flavour changing neutral currents in top-quark decays in pp collision data collected with the ATLAS detector at root s=7 TeV", number = "9", doi = "10.1007/JHEP09(2012)139" }
Aad, G., Borjanović, I., Božović-Jelisavčić, I., Ćirković, P., Agatonović-Jovin, T., Krstić, J., Marnuzic, J., Popović, D. S., Sijacki, Dj., Simić, Lj., Vranješ, N., Vranješ Milosavljević, M.,& Živković, L.. (2012). A search for flavour changing neutral currents in top-quark decays in pp collision data collected with the ATLAS detector at root s=7 TeV. in Journal of High Energy Physics(9). https://doi.org/10.1007/JHEP09(2012)139
Aad G, Borjanović I, Božović-Jelisavčić I, Ćirković P, Agatonović-Jovin T, Krstić J, Marnuzic J, Popović DS, Sijacki D, Simić L, Vranješ N, Vranješ Milosavljević M, Živković L. A search for flavour changing neutral currents in top-quark decays in pp collision data collected with the ATLAS detector at root s=7 TeV. in Journal of High Energy Physics. 2012;(9). doi:10.1007/JHEP09(2012)139 .
Aad, G., Borjanović, Iris, Božović-Jelisavčić, Ivanka, Ćirković, Predrag, Agatonović-Jovin, Tatjana, Krstić, Jelena, Marnuzic, J., Popović, D. S., Sijacki, Dj., Simić, Lj., Vranješ, Nenad, Vranješ Milosavljević, Marija, Živković, Lada, "A search for flavour changing neutral currents in top-quark decays in pp collision data collected with the ATLAS detector at root s=7 TeV" in Journal of High Energy Physics, no. 9 (2012), https://doi.org/10.1007/JHEP09(2012)139 . .