Measurement of the production cross-section of a single top quark in association with a W boson at 8 TeV with the ATLAS experiment
Autori
Aad, G.Abbott, B.
Abdallah, J.
Agatonović-Jovin, Tatjana
Bogavac, D.
Bozic, I.
Dimitrievska, A.
Krstic, J.
Marjanovic, M.
Popovic, D.
Sijacki, Dj.
Simic, Lj.
Vranjes, N.
Vranjes Milosavljevic, M.
Živković, L.
Ostala autorstva
ATLAS CollaborationATLAS Collaboration (ukupan broj autora: 2871)
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
The cross-section for the production of a single top quark in association with a W boson in proton-proton collisions at √s = 8TeV is measured. The dataset corresponds to an integrated luminosity of 20.3 fb−1, collected by the ATLAS detector in 2012 at the Large Hadron Collider at CERN. Events containing two leptons and one central b-jet are selected. The W t signal is separated from the backgrounds using boosted decision trees, each of which combines a number of discriminating variables into one classifier. Production of W t events is observed with a significance of 7.7σ. The cross-section is extracted in a profile likelihood fit to the classifier output distributions. The W t cross-section, inclusive of decay modes, is measured to be 23.0 ± 1.3(stat.)− 3.5 + 3.2(syst.)±1.1(lumi.) pb. The measured cross-section is used to extract a value for the CKM matrix element |Vtb| of 1.01 ± 0.10 and a lower limit of 0.80 at the 95% confidence level. The cross-section for the production of a top q...uark and a W boson is also measured in a fiducial acceptance requiring two leptons with pT> 25 GeV and |η| < 2.5, one jet with pT> 20 GeV and |η| < 2.5, and ET miss > 20 GeV, including both W t and top-quark pair events as signal. The measured value of the fiducial cross-section is 0.85 ± 0.01(stat.)− 0.07 + 0.07(syst.)±0.03(lumi.) pb.
Izvor:
Journal of High Energy Physics, 2016, 1, 64-
DOI: 10.1007/JHEP01(2016)064
ISSN: 1126-6708
WoS: 000368174800001
Scopus: 2-s2.0-84971238686
Institucija/grupa
VinčaTY - JOUR AU - Aad, G. AU - Abbott, B. AU - Abdallah, J. AU - Agatonović-Jovin, Tatjana AU - Bogavac, D. AU - Bozic, I. AU - Dimitrievska, A. AU - Krstic, J. AU - Marjanovic, M. AU - Popovic, D. AU - Sijacki, Dj. AU - Simic, Lj. AU - Vranjes, N. AU - Vranjes Milosavljevic, M. AU - Živković, L. PY - 2016 UR - https://vinar.vin.bg.ac.rs/handle/123456789/11845 AB - The cross-section for the production of a single top quark in association with a W boson in proton-proton collisions at √s = 8TeV is measured. The dataset corresponds to an integrated luminosity of 20.3 fb−1, collected by the ATLAS detector in 2012 at the Large Hadron Collider at CERN. Events containing two leptons and one central b-jet are selected. The W t signal is separated from the backgrounds using boosted decision trees, each of which combines a number of discriminating variables into one classifier. Production of W t events is observed with a significance of 7.7σ. The cross-section is extracted in a profile likelihood fit to the classifier output distributions. The W t cross-section, inclusive of decay modes, is measured to be 23.0 ± 1.3(stat.)− 3.5 + 3.2(syst.)±1.1(lumi.) pb. The measured cross-section is used to extract a value for the CKM matrix element |Vtb| of 1.01 ± 0.10 and a lower limit of 0.80 at the 95% confidence level. The cross-section for the production of a top quark and a W boson is also measured in a fiducial acceptance requiring two leptons with pT> 25 GeV and |η| < 2.5, one jet with pT> 20 GeV and |η| < 2.5, and ET miss > 20 GeV, including both W t and top-quark pair events as signal. The measured value of the fiducial cross-section is 0.85 ± 0.01(stat.)− 0.07 + 0.07(syst.)±0.03(lumi.) pb. T2 - Journal of High Energy Physics T1 - Measurement of the production cross-section of a single top quark in association with a W boson at 8 TeV with the ATLAS experiment IS - 1 SP - 64 DO - 10.1007/JHEP01(2016)064 ER -
@article{ author = "Aad, G. and Abbott, B. and Abdallah, J. and Agatonović-Jovin, Tatjana and Bogavac, D. and Bozic, I. and Dimitrievska, A. and Krstic, J. and Marjanovic, M. and Popovic, D. and Sijacki, Dj. and Simic, Lj. and Vranjes, N. and Vranjes Milosavljevic, M. and Živković, L.", year = "2016", abstract = "The cross-section for the production of a single top quark in association with a W boson in proton-proton collisions at √s = 8TeV is measured. The dataset corresponds to an integrated luminosity of 20.3 fb−1, collected by the ATLAS detector in 2012 at the Large Hadron Collider at CERN. Events containing two leptons and one central b-jet are selected. The W t signal is separated from the backgrounds using boosted decision trees, each of which combines a number of discriminating variables into one classifier. Production of W t events is observed with a significance of 7.7σ. The cross-section is extracted in a profile likelihood fit to the classifier output distributions. The W t cross-section, inclusive of decay modes, is measured to be 23.0 ± 1.3(stat.)− 3.5 + 3.2(syst.)±1.1(lumi.) pb. The measured cross-section is used to extract a value for the CKM matrix element |Vtb| of 1.01 ± 0.10 and a lower limit of 0.80 at the 95% confidence level. The cross-section for the production of a top quark and a W boson is also measured in a fiducial acceptance requiring two leptons with pT> 25 GeV and |η| < 2.5, one jet with pT> 20 GeV and |η| < 2.5, and ET miss > 20 GeV, including both W t and top-quark pair events as signal. The measured value of the fiducial cross-section is 0.85 ± 0.01(stat.)− 0.07 + 0.07(syst.)±0.03(lumi.) pb.", journal = "Journal of High Energy Physics", title = "Measurement of the production cross-section of a single top quark in association with a W boson at 8 TeV with the ATLAS experiment", number = "1", pages = "64", doi = "10.1007/JHEP01(2016)064" }
Aad, G., Abbott, B., Abdallah, J., Agatonović-Jovin, T., Bogavac, D., Bozic, I., Dimitrievska, A., Krstic, J., Marjanovic, M., Popovic, D., Sijacki, Dj., Simic, Lj., Vranjes, N., Vranjes Milosavljevic, M.,& Živković, L.. (2016). Measurement of the production cross-section of a single top quark in association with a W boson at 8 TeV with the ATLAS experiment. in Journal of High Energy Physics(1), 64. https://doi.org/10.1007/JHEP01(2016)064
Aad G, Abbott B, Abdallah J, Agatonović-Jovin T, Bogavac D, Bozic I, Dimitrievska A, Krstic J, Marjanovic M, Popovic D, Sijacki D, Simic L, Vranjes N, Vranjes Milosavljevic M, Živković L. Measurement of the production cross-section of a single top quark in association with a W boson at 8 TeV with the ATLAS experiment. in Journal of High Energy Physics. 2016;(1):64. doi:10.1007/JHEP01(2016)064 .
Aad, G., Abbott, B., Abdallah, J., Agatonović-Jovin, Tatjana, Bogavac, D., Bozic, I., Dimitrievska, A., Krstic, J., Marjanovic, M., Popovic, D., Sijacki, Dj., Simic, Lj., Vranjes, N., Vranjes Milosavljevic, M., Živković, L., "Measurement of the production cross-section of a single top quark in association with a W boson at 8 TeV with the ATLAS experiment" in Journal of High Energy Physics, no. 1 (2016):64, https://doi.org/10.1007/JHEP01(2016)064 . .