Search for in the lepton plus jets final state in proton–proton collisions at a centre-of-mass energy of with the ATLAS detector
A search for new charged massive gauge bosons, called W1 , is performed with the ATLAS detector at the LHC, in proton–proton collisions at a centre-of-mass energy of √s=8 TeV, using a dataset corresponding to an integrated luminosity of 20.3 fb-1. This analysis searches for W1 bosons in the W1 →t¯b decay channel in final states with electrons or muons, using a multivariate method based on boosted decision trees. The search covers masses between 0.5 and 3.0 TeV, for right-handed or left-handed W1 bosons. No significant deviation from the Standard Model expectation is observed and limits are set on the W1 →t¯b cross-section times branching ratio and on the W1 -boson effective couplings as a function of the W -boson mass using the CLs procedure. For a left-handed (right-handed) W1 boson, masses below 1.70 (1.92) TeV are excluded at 95% confidence level.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Contributing Organization:
- ATLAS Collaboration
- Grant/Contract Number:
- SC00112704; AC02-06CH11357; AC03-76SF00515; AC02-05CH11231
- OSTI ID:
- 1213877
- Alternate ID(s):
- OSTI ID: 1183885; OSTI ID: 1222209; OSTI ID: 1222212; OSTI ID: 1524028
- Report Number(s):
- BNL-108057-2015-JA; S0370269315001422; PII: S0370269315001422
- Journal Information:
- Physics Letters B, Journal Name: Physics Letters B Vol. 743 Journal Issue: C; ISSN 0370-2693
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- Netherlands
- Language:
- English
Web of Science
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