Search for a W' boson decaying to a bottom quark and a top quark in pp collisions at √s = 7 TeV

Open access
Author
CMS Collaboration
Chatrchyan, Serguei
Bäni, Lukas
Bortignon, Pierluigi
Buchmann, Marco-Andrea
Casal, Bruno
Chanon, Nicolas
Deisher, Amanda
Dissertori, Günther
Dittmar, Michael
Dünser, Marc
Eugster, Jürg
Freudenreich, Klaus
Grab, Christoph
Hits, Dmitry
Lecomte, Pierre
Lustermann, Werner
Marini, Andrea C.
Martinez Ruiz del Arbol, Pablo
Mohr, Niklas
Moortgat, Filip
Nägeli, Christoph
Nef, Pascal
Nessi-Tedaldi, Francesca
Pandolfi, Francesco
Pape, Luc
Pauss, Felicitas
Peruzzi, Marco
Ronga, Frédéric J.
Rossini, Marco
Sala, Leonardo
Sanchez, Ann-Karin
Starodumov, Andrey
Stieger, Benjamin
Tauscher, Ludwig
Thea, Alessandro
Theofilatos, Konstantinos
Treille, Daniel
Urscheler, Christina
Wallny, Rainer
Weber, Hannsjörg A.
Wehrli, Lukas
et al.
Date
2013-01Type
- Journal Article
Abstract
Results are presented from a search for a W' boson using a dataset corresponding to 5.0fb-1 of integrated luminosity collected during 2011 by the CMS experiment at the LHC in pp collisions at s=7TeV. The W' boson is modeled as a heavy W boson, but different scenarios for the couplings to fermions are considered, involving both left-handed and right-handed chiral projections of the fermions, as well as an arbitrary mixture of the two. The search is performed in the decay channel W'→tb, leading to a final state signature with a single electron or muon, missing transverse energy, and jets, at least one of which is identified as a b-jet. A W' boson that couples to the right-handed (left-handed) chiral projections of the fermions with the same coupling constants as the W is excluded for masses below 1.85 (1.51) TeV at the 95% confidence level. For the first time using LHC data, constraints on the W' gauge couplings for a set of left- and right-handed coupling combinations have been placed. These results represent a significant improvement over previously published limits Show more
Permanent link
https://doi.org/10.3929/ethz-b-000065330Publication status
publishedJournal / series
Physics Letters BVolume
Pages / Article No.
Publisher
ElsevierSubject
CMS; Physics; W'Organisational unit
03381 - Pauss, Felicitas (emeritus)
03593 - Dissertori, Günther / Dissertori, Günther
03904 - Wallny, Rainer / Wallny, Rainer
08803 - Grab, Christoph (Tit.Prof.)
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