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Title: Deeply Pseudoscalar Meson Electroproduction with CLAS and Generalized Parton Distributions

We discuss the recent data of exclusive $$\pi^0$$ (and $$\pi^+$$) electroproduction on the proton obtained by the CLAS collaboration at Jefferson Lab. It is observed that the cross sections, which have been decomposed in $$\sigma_T+\epsilon\sigma_L$$, $$\sigma_{TT}$$ and $$\sigma_{LT}$$ structure functions, are dominated by transverse amplitude contributions. The data can be interpreted in the Generalized Parton Distribution formalism provided that one includes helicity-flip transversity GPDs.
Authors:
 [1] ;  [2]
  1. Institut de Physique Nucleaire, Orsay (France)
  2. Jefferson Lab., Newport News, VA (United States)
Publication Date:
OSTI Identifier:
1223368
Report Number(s):
JLAB-PHY--14-1993; DOE/OR/23177--3282; arXiv:1412.4315
TRN: US1601479
DOE Contract Number:
AC05-06OR23177
Resource Type:
Conference
Resource Relation:
Conference: PANIC 14, Hamburg (Germany), 24-29 Aug 2014
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ELECTROPRODUCTION; PIONS PLUS; PIONS NEUTRAL; CEBAF ACCELERATOR; DISTRIBUTION; STRUCTURE FUNCTIONS; HELICITY; CROSS SECTIONS; SCATTERING AMPLITUDES; ELECTRON-PROTON INTERACTIONS; GLUON MODEL; QUARK MODEL