Higher twist light-cone distribution amplitudes of vector mesons in QCD

✍ Scribed by Kazuhiro Tanaka

• Book ID: 104333512
• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 238 KB
• Volume: 670
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(00)00076-2

✦ Synopsis

We present a systematic study of twist-3 light-cone distribution amplitudes of vector mesons in QCD, which is based on conformal expansion. A complete set of distribution amplitudes is constructed for p, w, K* and ¢ mesons, which satisfies all (exact) equations of motion and constraints from conformal expansion. Amplitudes of hard (light-cone dominated) exclusive processes in QCD are expressed by the factorization formulae, which separate the short-distance dynamics from the longdistance one [l]. For those processes producing a (light) vector meson Y (= p, w, K*, ¢) in