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Title: Hard exclusive pion electroproduction at backward angles with CLAS

We report on the first measurement of cross sections for exclusive deeply virtual pion electroproduction off the proton, $$e p \to e^\prime n \pi^+$$, above the resonance region at backward pion center-of-mass angles. The $$\varphi^*_{\pi}$$-dependent cross sections were measured, from which we extracted three combinations of structure functions of the proton. Our results are compatible with calculations based on nucleon-to-pion transition distribution amplitudes (TDAs) and shed new light on nucleon structure.
Authors:
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Publication Date:
Report Number(s):
JLAB-PHY-17-2598; DOE/OR/-23177-4261; arXiv:1711.08486; PLB33642
Journal ID: ISSN 0370-2693; PII: S0370269318302156
Grant/Contract Number:
AC05-06OR23177; SC0016583
Type:
Accepted Manuscript
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 780; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); George Washington Univ., Washington, DC (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26); National Science Foundation (NSF); Italian Istituto Nazionale di Fisica Nucleare (INFN); French Centre National de la Recherche Scientifique (CNRS); French Commissariat à l'Energie Atomique; UK's Science and Technology Facilities Council; National Research Foundation of Korea (NRF)
Contributing Orgs:
CLAS Collaboration
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; TDA; Exclusive single pion; Eletroproduction; CLAS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; pion electroproduction
OSTI Identifier:
1438395
Alternate Identifier(s):
OSTI ID: 1439889