Document Type

Article

Publication Date

5-2018

DOI

10.1016/j.physletb.2018.03.026

Publication Title

Physics Letters B

Volume

780

Pages

340-345

Abstract

We report on the first measurement of cross sections for exclusive deeply virtual pion electroproduction off the proton, ep → e'nπ+, above the resonance region at backward pion center-of-mass angles. The ϕ∗ π-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 threequark-light-cone-operators and characterize partonic correlations with a particular emphasis on baryon charge distribution inside a nucleon.

Comments

This is an open access article under the CC BY license. Funded by SCOAP3.

© 2018 The Authors. Published by Elsevier B.V.

Original Publication Citation

Park, K., Guidal, M., Gothe, R. W., Pire, B., Semenov-Tian-Shansky, K., Laget, J. M., . . . Zhang, J. (2018). Hard exclusive pion electroproduction at backward angles with CLAS. Physics Letters B, 780, 340-345. doi:10.1016/j.physletb.2018.03.026

ORCID

0000-0001-7282-8120 (Hyde), 0000-0003-2243-6836 (Kuhn)

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