Adıyaman Üniversitesi Kurumsal Arşivi

Measurement of the polarization of W bosons with large transverse momenta in W plus jets events at the LHC

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dc.contributor.author CMS Collaboration
dc.date.accessioned 2022-06-13T06:04:51Z
dc.date.available 2022-06-13T06:04:51Z
dc.date.issued 2011
dc.identifier.issn 0031-9007
dc.identifier.uri http://dspace.adiyaman.edu.tr:8080/xmlui/handle/20.500.12414/3156
dc.description.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. tr
dc.language.iso en tr
dc.publisher Amer Physical Soc tr
dc.title Measurement of the polarization of W bosons with large transverse momenta in W plus jets events at the LHC tr
dc.type Article tr
dc.identifier.issue 2 tr
dc.identifier.volume 107 tr
dc.source.title Physical Review Letters tr


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