Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/10733
Title: Measurement of the Polarization of W Bosons with Large Transverse Momenta in W plus jets Events at the LHC
Authors: CMS Collaboration
Issue Date: 2011
Publisher: American Physical Society
Abstract: A first measurement of the polarization of W bosons with large transverse momenta in pp collisions is presented. The measurement is based on 36 pb(-1) of data recorded at root s = 7 TeV by the CMS detector at the LHC. The left-handed, right-handed, and longitudinal polarization fractions (f(L), f(R), and f(0), respectively) of W bosons with transverse momenta larger than 50 GeV are determined by using decays to both electrons and muons. The muon final state yields the most precise measurement: (f(L) - f(R))(-) = 0.240 +/- 0.036(syst) +/- 0.031(syst) and f(0)(-) = 0.183 +/- 0.087(stat) +/- 0.123(syst) for negatively charged W bosons and (f(L) - f(R))(+) = 0.310 +/- 0.036(syst) +/- 0.017(syst) and f(0)(+) = 0.171 +/- 0.085(syst) +/- 0.099(syst) for positively charged W bosons. This establishes, for the first time, that W bosons produced in pp collisions with large transverse momenta are predominantly left-handed, as expected in the standard model.
Description: PubMed: 21797595
URI: https://doi.org/10.1103/PhysRevLett.107.021802
https://hdl.handle.net/10733
ISSN: 0031-9007
1079-7114
Appears in Collections:PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

Show full item record


CORE Recommender

SCOPUSTM   
Citations

70
checked on Mar 27, 2023

WEB OF SCIENCETM
Citations

56
checked on Mar 25, 2023

Page view(s)

98
checked on Mar 27, 2023

Google ScholarTM

Check




Altmetric


Items in GCRIS Repository are protected by copyright, with all rights reserved, unless otherwise indicated.