Search for W ′ →tb ¯ in the lepton plus jets final state in proton-proton collisions at a centre-of-mass energy of √s= 8 TeV with the ATLAS detector

ATLAS, Collaboration; Agustoni, Marco; Beck, Hans Peter; Cervelli, Alberto; Ereditato, Antonio; Haug, Sigve; Kabana, Sonja; Marti, Lukas; Meloni, Federico; Pretzl, Klaus-Peter; Schneider, Basil; Stramaglia, Maria Elena; Stucci, Stefania; Weber, Michael (2015). Search for W ′ →tb ¯ in the lepton plus jets final state in proton-proton collisions at a centre-of-mass energy of √s= 8 TeV with the ATLAS detector. Physics letters. B, 743, pp. 235-255. Elsevier 10.1016/j.physletb.2015.02.051

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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 ′ →tb ¯ 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 ′ →tb ¯ 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.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)

UniBE Contributor:

Agustoni, Marco; Beck, Hans Peter; Cervelli, Alberto; Ereditato, Antonio; Haug, Sigve; Marti, Lukas; Meloni, Federico; Pretzl, Klaus-Peter; Schneider, Basil; Stramaglia, Maria Elena; Stucci, Stefania and Weber, Michael

Subjects:

500 Science > 530 Physics

ISSN:

0370-2693

Publisher:

Elsevier

Language:

English

Submitter:

Annette Krebs-Wegenast

Date Deposited:

12 Sep 2016 11:41

Last Modified:

12 Feb 2017 02:08

Publisher DOI:

10.1016/j.physletb.2015.02.051

ArXiv ID:

1410.4103

Additional Information:

Kollaboration - Es sind nur die Berner Autoren namentlich erwähnt

BORIS DOI:

10.7892/boris.87684

URI:

https://boris.unibe.ch/id/eprint/87684

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