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DTSTART;TZID=America/Los_Angeles:20170117T160000
DTEND;TZID=America/Los_Angeles:20170117T170000
DTSTAMP:20260423T135335
CREATED:20160919T162406Z
LAST-MODIFIED:20160919T162406Z
UID:325-1484668800-1484672400@rpm.physics.lbl.gov
SUMMARY:Aleksandra Dimitrievska (U. Belgrade) "Measurement of the W-boson mass with the ATLAS detector "
DESCRIPTION:Abstract:\nThe precise measurements of the W boson\, the Higgs boson and the top quark masses enables to test the consistency of the Standard Model. Constraints on physics beyond the Standard Model are currently limited by the precision of the W-boson mass measurement. In this talk a measurement of the  W-boson mass is presented with the data collected in 2011 at centre-of-mass energy of 7 TeV with the ALTAS detector corresponding to an integrated luminosity of 4.6 fb⁻¹. The measurement is based on about 8 and 6 million W candidates in the muon and electron channels\, respectively. The W-boson mass is extracted from the template fits to the transverse momentum of the charged lepton and to the transverse mass of the W boson distributions. This measurement yields a W-boson mass:\nmW = 80370 ± 7 (stat.) ± 11 (exp. syst.) ± 14 (mod. syst.) MeV = 80370 ± 19 MeV\,\nwhere the first uncertainty is statistical\, the second corresponds to the experimental systematic uncertainty\, and the third to the physics-modelling systematic uncertainty.
URL:https://rpm.physics.lbl.gov/event/reserved-26/
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