Direct measurement of the W boson width in p&pmacr; collisions at radicals = 1.8 TeV |
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| Authors: | Theriot Thurman-Keup Tipton Tkaczyk Tollefson Tollestrup Toyoda Trischuk de Troconiz JF Tseng Turini Ukegawa Vaiciulis Valls Vejcik Velev Vidal Vilar Volobouev Vucinic Wagner Wagner Wahl Wallace Walsh Wang |
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| Institution: | Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA. |
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| Abstract: | This Letter describes a direct measurement of the W boson total decay width, gamma(W), using the Collider Detector at Fermilab. The measurement uses an integrated luminosity of 90 pb(-1), collected during the 1994-1995 run of the Fermilab Tevatron p&pmacr; collider. The width is determined by normalizing predicted signal and background distributions to 49 844 W-->enu candidates and 21 806 W-->&mgr;nu candidates in the transverse-mass region M(T)<200 GeV and then fitting the predicted shape to the 438 electron events and 196 muon events in the high- M(T) region, 100
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