Electromagnetic effects in the production of dimuons at large transverse momentum |
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Authors: | Dean L Preston |
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Institution: | 2. Joseph Henry Laboratories, Princeton University, Princeton, New Jersey 08540, USA |
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Abstract: | The effects of single-photon corrections to the simple Drell-Yan mechanism are studied for massive dimuons at large transverse momentum in the processes . It is found that single-photon emission by the muons constitutes an important correction to the effects of single-gluon emission by the quarks for very massive (Mμμ2 ? mμ2) muon pairs.Interference of the amplitude for photon emission from the muons with that for radiation from the quarks generates an asymmetry in the muon angular distribution. The forward-backward asymmetry is studied in detail as a function of pair mass and transverse momentum. |
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