Measurement of decay angular distributions of Drell-Yan events for p-d interaction at 800 GeV/c.
We report preliminary results from a measurement of the angular distributions of Drell-Yan dimuons produced using an 800 GeV/c proton beam on a deuterium target. No significant cos2{phi} dependence is found in these proton-induced Drell-Yan data, in contrast to the situation for pion-induced Drell-Yan. The data are compared with expectations from models which attribute the cos2{phi} distribution to a QCD vacuum effect or to the presence of the transverse-momentum-dependent Boer-Mulders structure function h{sub 1}.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 970781
- Report Number(s):
- ANL/PHY/CP-119291
- Country of Publication:
- United States
- Language:
- ENGLISH
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