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.
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)
Repository Citation
Park, K.; Guidal, M.; Gothe, R. W.; Pire, B.; Charles, G.; Hyde, C. E.; Kuhn, S E.; Poudel, J.; and Prok, Y., "Hard Exclusive Pion Electroproduction at Backward Angles With CLAS" (2018). Physics Faculty Publications. 213.
https://digitalcommons.odu.edu/physics_fac_pubs/213
Included in
Astrophysics and Astronomy Commons, Elementary Particles and Fields and String Theory Commons, Nuclear Commons
Comments
This is an open access article under the CC BY license. Funded by SCOAP3.
© 2018 The Authors. Published by Elsevier B.V.