par Aguilar-Benitez, M.;Lemonne, Jacques 
;Van Immerseel, M.;Vonck, B.;Wickens, John H. ; [et al.]
Référence Physics letters. Section B, 123, 1-2, page (98-102)
Publication Publié, 1983-03
;Van Immerseel, M.;Vonck, B.;Wickens, John H. ; [et al.]Référence Physics letters. Section B, 123, 1-2, page (98-102)
Publication Publié, 1983-03
Article révisé par les pairs
| Résumé : | Charm D-meson production in 360 GeV π-p interactions has been studied using the high-resolution hydrogen bubble chamber LEBC and the European Hybrid Spectrometer. The data show evidence for leading quark effects both in the number of D-meson types and in the Feynman x distributions. The production cross section is of the form d2δ dxdpT2∞(1-x)nexp(-apT 2) with n = 2.8±0.8 and a = 1.1±0.3 (GeV/c)-2. The x distribution is, however, compatible with the presence of both central (n = 6) and leading (n = 1) D/Dproduction. The fraction of D-messons in the leading component is estimated to be ≈30%. The rapidity gap between members of reconstructed charm pairs is small compared to the available rapidity range. The inclusive cross section for single D-messons in the forward direction is: δ(D/D)=(408+15)μb (forx>0). © 1983. |
