Title

Hard exclusive pion electroproduction at backward angles with CLAS.

Authors

K. Park
M. Guidal
R. W. Gothe
B. Pire
K. Semenov-Tian-Shansky
J-M. Laget
K. P. Adhikari
Angela Biselli, Fairfield UniversityFollow
CLAS Collaboration

Document Type

Article

Publication Date

2018

Abstract

We report on the first measurement of cross sections for exclusive deeply virtual pion electroproduction off the proton, , above the resonance region at backward pion center-of-mass angles. The ⁎-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). These non-perturbative objects are defined as matrix elements of three-quark-light-cone-operators and characterize partonic correlations with a particular emphasis on baryon charge distribution inside a nucleon.

Comments

© 2018 The Author(s)

Published by Elsevier B.V. under CC License Attribution 4.0 International (CC BY 4.0)

Publication Title

Physics Letters B

Repository Citation

Park, K.; Guidal, M.; Gothe, R. W.; Pire, B.; Semenov-Tian-Shansky, K.; Laget, J-M.; Adhikari, K. P.; Biselli, Angela; and CLAS Collaboration, "Hard exclusive pion electroproduction at backward angles with CLAS." (2018). Physics Faculty Publications. 147.
https://digitalcommons.fairfield.edu/physics-facultypubs/147

Published Citation

Park, K., M. Guidal, R. W. Gothe, B. Pire, K. Semenov-Tian-Shansky, J-M. Laget, K. P. Adhikari, Biselli A. et al [CLAS Collaboration]. "Hard exclusive pion electroproduction at backward angles with CLAS." Physics Letters B 780 (2018): 340-345. https://doi.org/10.1016/j.physletb.2018.03.026

DOI

10.1016/j.physletb.2018.03.026