Search for W′ → t b¯ 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

0522323 - FZÚ 2020 RIV NL eng J - Journal Article
Aad, G. - Abbott, B. - Abdallah, J. - Chudoba, Jiří - Havránek, Miroslav - Hejbal, Jiří - Jakoubek, Tomáš - Kepka, Oldřich - Kupčo, Alexander - Kůs, Vlastimil - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek - Vrba, Václav … Total 2885 authors
Search for W′ → t b¯ 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. Roč. 743, April (2015), s. 235-255. ISSN 0370-2693. E-ISSN 1873-2445
Institutional support: RVO:68378271
Keywords : ATLAS * CERN LHC Coll * W' --> top bottom * 8000 GeV-cms
OECD category: Particles and field physics
Impact factor: 4.787, year: 2015
Method of publishing: Open access

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 CLs procedure. For a left-handed (right-handed) W′ boson, masses below 1.70 (1.92) TeV are excluded at 95% confidence level.

Permanent Link: http://hdl.handle.net/11104/0306838