17-24 July 2013
KTH and Stockholm University Campus
Europe/Stockholm timezone

W + Heavy Flavor Jet Measurements with CMS

18 Jul 2013, 12:30
15m
F2 (KTH Campus)

F2

KTH Campus

Talk presentation Top and Electroweak Physics Top and Electroweak Physics

Speaker

Isabel Ojalvo (University of Wisconsin (US))

Description

Production and hadronization of heavy quarks (b and c) in association with the W boson in proton-proton collisions is only partially understood. Experimental measurements are necessary to choose amongst the phenomenological models and parameters. Using the LHC proton-proton collision data collected in 2011 at a centre of mass energy of 7 TeV, we present two studies (1) W+c production, where charm jet is identified by reconstruction of a secondary vertex with an identified charmed meson, or a muon-tagged jet and (2) W+bb production, where both b-jets are tagged by the secondary vertices. In both cases, the W-boson is tagged by the presence of one isolated lepton accompanied by missing transverse energy. A precise W+c measurement at the LHC may significantly reduce the uncertainties on the strange parton distribution function (PDF). A thorough understanding of the Wbb measurement is required to improve search for W-associated Higgs to bb production, or BSM searches in modes tagged by a W and a pair of b-jets.

Primary author

Dr Kerstin Borras (Deutsches Elektronen-Synchrotron (DE))

Presentation Materials