Measurement of beauty production in deep inelastic scattering at HERA


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DESY-HERA. Measurement of the cross sections at a centre of mass energy 318 GeV for DIS events in E+- P collisions with at least on hard jet in the Breit frame plus a muon. The data were taken during the 1999 to 2000 running period with electrons/positrons of energy 27.5 GeV and protons of energy 920 GeV for photon virtualities, Q**2, & gt; 2 GeV. The total integrated luminosity was 72.4 pb-1. Muons were detected in either the inner or outer parts of the BMUON or RMUON chambers. In the BMUON(RMUON) regions, the muon pseudorapidity was required to be between -0.9 and 1.3(-1.6 and -0.9) with the muon transverse momentum & gt; 2 GeV for the BMUON data and the muon momentum & gt; 2 GeV for the RMUON data. Jets were reconstructed in the Breit frame requiring at least one jet with ET above 6 GeV in the Breit frame and pseudorapidity in the lab frame from between -2 and 2.5. Muon-jet association (not necessarily the aforementioned jet) required the associated jet to have ET & gt; 4 GeV in the Breit frame.
Date made available2004

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