|
|||||
|
|
Angular distributions in the dimuon hadronic production at 150 GeV/c |
|
| Authors: | J. Badier J. Boucrot J. Bourotte G. Burgun O. Callot Ph. Charpentier M. Crozon D. Decamp P. Delpierre P. Espigat B. Gandois R. Hagelberg M. Hansroul Y. Karyotakis W. Kienzle P. Le D? J. Lefran?ois Th. Leray J. Maillard A. Michelini Ph. Mine G. Rahal O. Runolfsson P. Siegrist A. Tilquin J. Valentin R. Vanderhaghen S. Weisz NA Collaboration |
| Affiliation: | 1. Ecole Polytechnique, Palaiseau 2. Laboratoire de l'Accélérateur Linéaire, Orsay 3. CEN, Saclay 4. College de France, Paris 5. CERN, Geneva |
| Abstract: | From π- interactions at 150 GeV/c on a heavy target, we present the final analysis of the dimuon decay angular distribution in the mass interval 4.5–8.5 GeV/c2. Results are presented and discussed in various reference frames and are also given in terms of the density matrix elements. Finally the possible contribution of higher-twist effects at largex 1 is discussed; we find that our data are not compatible with higher twist contributions as proposed by the Berger and Brodsky Model. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |