Search for W - GT tb - GT qqbb decays in pp collisions at root s=8 TeV with the ATLAS detector

2015
Authors
Aad, G.
Agatonović-Jovin, Tatjana

Ćirković, Predrag

Dimitrievska, A.
Krstić, Jelena

Mamužić, Judita

Marjanović, M.
Popović, D. S.
Sijacki, Dj.
Simić, Lj.
Vranješ, Nenad

Vranješ Milosavljević, Marija

ATLAS Collaboration (ukupan broj autora: 2891)
Article (Published version)
Metadata
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A search for a massive W gauge boson decaying to a top quark and a bottom quark is performed with the ATLAS detector in pp collisions at the LHC. The datasetwas taken at a centre-of-mass energy of root s = 8 TeV and corresponds to 20.3 fb(-1) of integrated luminosity. This analysis is done in the hadronic decay mode of the top quark, where novel jet substructure techniques are used to identify jets from high-momentum top quarks. This allows for a search for high-mass W bosons in the range 1.5-3.0 TeV. b-tagging is used to identify jets originating from b-quarks. The data are consistent with Standard Model background-only expectations, and upper limits at 95% confidence level are set on the W - GT tb cross section times branching ratio ranging from 0.16 pb to 0.33 pb for left-handed W bosons, and ranging from 0.10 pb to 0.21 pb for W bosons with purely righthanded couplings. Upper limits at 95% confidence level are set on the W-boson coupling to tb as a function of the W mass using an e...ffective field theory approach, which is independent of details of particular models predicting a W boson.
Source:
European Physical Journal C. Particles and Fields, 2015, 75, 4Funding / projects:
- ANPCyT, Argentina, YerPhI, Armenia, ARC, Australia, BMWFW, Austria, FWF, Austria, ANAS, Azerbaijan, SSTC, Belarus, CNPq, Brazil, FAPESP, Brazil, NSERC, Canada, NRC, Canada, CFI, Canada, CERN, CONICYT, Chile, CAS, China, MOST, China, NSFC, China, COLCIENCIAS, Colombia, MSMT CR, Czech Republic, MPO CR, Czech Republic, VSC CR, Czech Republic, DNRF, Denmark, DNSRC, Denmark, Lundbeck Foundation, Denmark, EPLANET, European Union, ERC, European Union, NSRF, European Union, IN2P3-CNRS, France, CEA-DSM/IRFU, France, GNSF, Georgia, BMBF, Germany, DFG, Germany, HGF, Germany, MPG, Germany, AvH Foundation, Germany, GSRT, Greece, NSRF, Greece, RGC, Hong Kong SAR, China, ISF, Israel, MINERVA, Israel, GIF, Israel, I-CORE, Israel, Benoziyo Center, Israel, INFN, Italy, MEXT, Japan, JSPS, Japan, CNRST, Morocco, FOM, Netherlands, NWO, Netherlands, BRF, Norway, RCN, Norway, MNiSW, Poland, NCN, Poland, GRICES, Portugal, FCT, Portugal, MNE/IFA, Romania, MES of Russia, ROSATOM, Russian Federation, JINR, MSTD, Serbia, MSSR, Slovakia, ARRS, Slovenia, MIZS, Slovenia, DST/NRF, South Africa, MINECO, Spain, SRC, Sweden, Wallenberg Foundation, Sweden, SER, Switzerland, SNSF, Switzerland, Cantons of Bern and Geneva, Switzerland, NSC, Taiwan, TAEK, Turkey, STFC, United Kingdom, Royal Society, United Kingdom, Leverhulme Trust, United Kingdom, DOE, United States of America, NSF, United States of America, ICREA
DOI: 10.1140/epjc/s10052-015-3372-2
ISSN: 1434-6044; 1434-6052
WoS: 000355671700005
Scopus: 2-s2.0-84951869663
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VinčaTY - JOUR AU - Aad, G. AU - Agatonović-Jovin, Tatjana AU - Ćirković, Predrag AU - Dimitrievska, A. AU - Krstić, Jelena AU - Mamužić, Judita AU - Marjanović, M. AU - Popović, D. S. AU - Sijacki, Dj. AU - Simić, Lj. AU - Vranješ, Nenad AU - Vranješ Milosavljević, Marija PY - 2015 UR - https://vinar.vin.bg.ac.rs/handle/123456789/587 AB - A search for a massive W gauge boson decaying to a top quark and a bottom quark is performed with the ATLAS detector in pp collisions at the LHC. The datasetwas taken at a centre-of-mass energy of root s = 8 TeV and corresponds to 20.3 fb(-1) of integrated luminosity. This analysis is done in the hadronic decay mode of the top quark, where novel jet substructure techniques are used to identify jets from high-momentum top quarks. This allows for a search for high-mass W bosons in the range 1.5-3.0 TeV. b-tagging is used to identify jets originating from b-quarks. The data are consistent with Standard Model background-only expectations, and upper limits at 95% confidence level are set on the W - GT tb cross section times branching ratio ranging from 0.16 pb to 0.33 pb for left-handed W bosons, and ranging from 0.10 pb to 0.21 pb for W bosons with purely righthanded couplings. Upper limits at 95% confidence level are set on the W-boson coupling to tb as a function of the W mass using an effective field theory approach, which is independent of details of particular models predicting a W boson. T2 - European Physical Journal C. Particles and Fields T1 - Search for W - GT tb - GT qqbb decays in pp collisions at root s=8 TeV with the ATLAS detector VL - 75 IS - 4 DO - 10.1140/epjc/s10052-015-3372-2 ER -
@article{ author = "Aad, G. and Agatonović-Jovin, Tatjana and Ćirković, Predrag and Dimitrievska, A. and Krstić, Jelena and Mamužić, Judita and Marjanović, M. and Popović, D. S. and Sijacki, Dj. and Simić, Lj. and Vranješ, Nenad and Vranješ Milosavljević, Marija", year = "2015", abstract = "A search for a massive W gauge boson decaying to a top quark and a bottom quark is performed with the ATLAS detector in pp collisions at the LHC. The datasetwas taken at a centre-of-mass energy of root s = 8 TeV and corresponds to 20.3 fb(-1) of integrated luminosity. This analysis is done in the hadronic decay mode of the top quark, where novel jet substructure techniques are used to identify jets from high-momentum top quarks. This allows for a search for high-mass W bosons in the range 1.5-3.0 TeV. b-tagging is used to identify jets originating from b-quarks. The data are consistent with Standard Model background-only expectations, and upper limits at 95% confidence level are set on the W - GT tb cross section times branching ratio ranging from 0.16 pb to 0.33 pb for left-handed W bosons, and ranging from 0.10 pb to 0.21 pb for W bosons with purely righthanded couplings. Upper limits at 95% confidence level are set on the W-boson coupling to tb as a function of the W mass using an effective field theory approach, which is independent of details of particular models predicting a W boson.", journal = "European Physical Journal C. Particles and Fields", title = "Search for W - GT tb - GT qqbb decays in pp collisions at root s=8 TeV with the ATLAS detector", volume = "75", number = "4", doi = "10.1140/epjc/s10052-015-3372-2" }
Aad, G., Agatonović-Jovin, T., Ćirković, P., Dimitrievska, A., Krstić, J., Mamužić, J., Marjanović, M., Popović, D. S., Sijacki, Dj., Simić, Lj., Vranješ, N.,& Vranješ Milosavljević, M.. (2015). Search for W - GT tb - GT qqbb decays in pp collisions at root s=8 TeV with the ATLAS detector. in European Physical Journal C. Particles and Fields, 75(4). https://doi.org/10.1140/epjc/s10052-015-3372-2
Aad G, Agatonović-Jovin T, Ćirković P, Dimitrievska A, Krstić J, Mamužić J, Marjanović M, Popović DS, Sijacki D, Simić L, Vranješ N, Vranješ Milosavljević M. Search for W - GT tb - GT qqbb decays in pp collisions at root s=8 TeV with the ATLAS detector. in European Physical Journal C. Particles and Fields. 2015;75(4). doi:10.1140/epjc/s10052-015-3372-2 .
Aad, G., Agatonović-Jovin, Tatjana, Ćirković, Predrag, Dimitrievska, A., Krstić, Jelena, Mamužić, Judita, Marjanović, M., Popović, D. S., Sijacki, Dj., Simić, Lj., Vranješ, Nenad, Vranješ Milosavljević, Marija, "Search for W - GT tb - GT qqbb decays in pp collisions at root s=8 TeV with the ATLAS detector" in European Physical Journal C. Particles and Fields, 75, no. 4 (2015), https://doi.org/10.1140/epjc/s10052-015-3372-2 . .