H1prelim-04-072

Measurement of charm and beauty production in deep inelastic e+p scattering at high Q2 at HERA

Reference Preliminary results expected for DIS2004, Spring 2004
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Contact Wolfram Erdmann, Salvatore Mangano, Andy Mehta, Paul Thompson
Abstract The first inclusive measurement of charm and bottom production in deep inelastic scattering at very high momentum transfer, $Q^2 > 150 GeV$, is presented. The measurement uses data recorded with the H1 detector in 1999 and 2000 at a centre of mass energy of sqrt{s}=319 GeV corresponding to an integrated Luminosity of 65.2 pb**-1. The flavor composition of a sample of deep inelastic scattering events is determined based on the properties of secondary decay vertices detected with the silicon vertex detector of the H1 experiment and the production cross sections are given.
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