Experimental cross section for dimuon production and the Drell-Yan model |
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| Authors: | J Badier J Boucrot G Burgun O Callot Ph Charpentier M Crozon D Décamp P Delpierre B Gandois R Hagelberg M Hansroul W Kienzle P Le Dû J Lefrançois Th Leray G Matthiae A Michelini Ph Miné S Weisz |
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| Institution: | 1. CEN-Saclay-, Orsay, France;2. CERN-, Orsay, France;3. Collège de France, France;4. Ecole Polytechnique, Palaiseau, Orsay, France;5. Laboratoire de l''Accélérateur Linéaire, Orsay, France |
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| Abstract: | We have measured the absolute cross section for dimuon production in hadron collisions at 200 GeV/c in the continuum region M = 4–8.5 GeV. In all the channels studied (pN, N, π±N and π?H2) the experimental cross section is significantly larger by a factor of 2.3 ± 0.5 than expected from the Drell-Yan model. Furthermore, our proton-nucleon data allow a determination of the nucleon valence structure function which agrees with the deep inelastic lepton scattering data. |
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