Search for $W' \\to t\\barb$ in the lepton plus jets final state in proton-proton collisions at a centre-of-mass energy of $\\sqrts$ = 8 TeV with the ATLAS detector
Journal
Physics Letters
Journal Volume
B743
Pages
235-255
Date Issued
2015
Author(s)
Aad, Georges
Abstract
A search for new charged massive gauge bosons, called W , 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 W bosons in the W 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 W bosons. No significant deviation from the Standard Model expectation is observed and limits are set on the W t b cross-section times branching ratio and on the W -boson effective couplings as a function of the W -boson mass using the CL s procedure. For a left-handed (right-handed) W boson, masses below 1.70 (1.92) TeV are excluded at 95% confidence level.
Type
journal article