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Measurement of the Diffractive Cross Section in Charged Current Interactions at HERA |
| Reference |
M Kapishin, presented at ICHEP2004, Summer 2004 |
| Document |
Conference paper
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| Contact |
P Laycock |
| Abstract |
A first differential measurement of charged current diffractive interactions is presented using data taken by the H1 experiment amounting to an integrated luminosity of 63 pb^-1. The process ep -> nu XY is studied, where the Y system is a proton or proton remnant with M_Y < 1.6 GeV and |t| < 1.0 GeV^2. It is separated from the X system by a large gap in pseudorapidity. Total and differential cross-sections are extracted in the kinematic range Q^2 > 200 GeV^2, y < 0.9 and x_pom < 0.05 and compared to predictions from a model of diffractive DIS in which the exchanged W boson scatters from diffractive parton densities extracted from fits to neutral current data at lower Q^2. The ratio of the diffractive charged current cross-section to the inclusive charged current cross-section is also measured. |
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