Rights statement: © CERN for the benefit of the ATLAS collaboration 2015. This article is published with open access at Springerlink.com EPJC is an open-access journal funded by SCOAP3 and licensed under CC BY 4.0
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Search for W′→tb→qqbb decays in pp collisions at √ s = 8 TeV with the ATLAS detector
AU - Allison, Lee
AU - Barton, Adam
AU - Beattie, Michael
AU - Borissov, Guennadi
AU - Bouhova-Thacker, Eva
AU - Chilingarov, Alexandre
AU - Dearnaley, William
AU - Fox, Harald
AU - Grimm, Kathryn
AU - Henderson, Robert
AU - Hughes, Gareth
AU - Jones, Roger William Lewis
AU - Kartvelishvili, Vakhtang
AU - Long, Robin
AU - Love, Peter
AU - Maddocks, Harvey
AU - Smizanska, Maria
AU - Walder, James
AU - The ATLAS collaboration
N1 - EPJC is an open-access journal funded by SCOAP3 and licensed under CC BY 4.0 © CERN for the benefit of the ATLAS collaboration 2015. This article is published with open access at Springerlink.com
PY - 2015/4
Y1 - 2015/4
N2 - 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 dataset was taken at a centre-of-mass energy of 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 ′ →tb cross section times branching ratio ranging from 0.16pb to 0.33pb for left-handed W ′ bosons, and ranging from 0.10pb to 0.21pb for W ′ bosons with purely right-handed 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.
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 dataset was taken at a centre-of-mass energy of 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 ′ →tb cross section times branching ratio ranging from 0.16pb to 0.33pb for left-handed W ′ bosons, and ranging from 0.10pb to 0.21pb for W ′ bosons with purely right-handed 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.
KW - Parton distributions
KW - Hadron Colliders
KW - Phenomenology
KW - Leptons
KW - Model
KW - Plus
KW - LHC
U2 - 10.1140/epjc/s10052-015-3372-2
DO - 10.1140/epjc/s10052-015-3372-2
M3 - Journal article
VL - 75
JO - European Physical Journal C: Particles and Fields
JF - European Physical Journal C: Particles and Fields
SN - 1434-6044
IS - 4
M1 - 165
ER -