|
|||||
|
|
Direct measurement of the pion valence-quark momentum distribution, the pion light-cone wave function squared |
|
| Authors: | Aitala E M Amato S Anjos J C Appel J A Ashery D Banerjee S Bediaga I Blaylock G Bracker S B Burchat P R Burnstein R A Carter T Carvalho H S Copty N K Cremaldi L M Darling C Denisenko K Deval S Fernandez A Fox G F Gagnon P Gerzon S Gobel C Gounder K Halling A M Herrera G Hurvits G James C Kasper P A Kwan S Langs D C Leslie J Lichtenstadt J Lundberg B MayTal-Beck S Meadows B de Mello Neto J R Mihalcea D Milburn R H de Miranda J M Napier A Nguyen A d'Oliveira A B O'Shaughnessy K Peng K C Perera L P Purohit M V Quinn B Radeztsky S Rafatian A Reay N W Reidy J J dos Reis A C Rubin H A Sanders D A |
| Institution: | Centro Brasiliero de Pesquisas Físicas, Rio de Janeiro, Brazil. |
| Abstract: | We present the first direct measurements of the pion valence-quark momentum distribution which is related to the square of the pion light-cone wave function. The measurements were carried out using data on diffractive dissociation of 500 GeV/c pi(-) into dijets from a platinum target at Fermilab experiment E791. The results show that the /q&q> light-cone asymptotic wave function describes the data well for Q2 approximately 10 (GeV/c)(2) or more. We also measured the transverse momentum distribution of the diffractive dijets. |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ | |