Study of charged—current ep interactions at Q2>200 GeV2 with the ZEUS detector at HERAстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Deep inelastic charged-current reactions have been studied ine + p ande − p collisions at a center of mass energy of about 300GeV in the kinematic regionQ 2>200GeV2 andx>0.006 using the ZEUS detector at HERA. The integrated cross sections forQ 2>200GeV2 are found to be σe+p→νˉX=30.3−4.2−2.6+5.5+1.6pb and σe−p→νX=54.7−9.8−3.4+15.9+2.8pb . Differential cross sections have been measured as functions of the variablesx, y andQ 2. From the measured differential cross sectionsdσ/dQ 2, theW boson mass is determined to be MW=79−7−4+8+4GeV . Measured jet rates and transverse energy profiles agree with model predictions. A search for charged-current interactions with a large rapidity gap yielded one candidate event, corresponding to a cross section of σe+p→νˉX(Q2>200GeV2;ηmax<2.5)=0.8−0.7+1.8±0.1pb