Document Type

Article

Publication Date

6-2017

DOI

10.1103/PhysRevLett.118.222002

Publication Title

Physical Review Letters

Volume

118

Issue

22

Pages

222002 (6 pages)

Abstract

We report the first longitudinal-transverse separation of the deeply virtual exclusive π0 electroproduction cross section off the neutron and coherent deuteron. The corresponding four structure functions dσL/dt, dσT/dt, dσLT/dt, and dσTT/dt are extracted as a function of the momentum transfer to the recoil system at Q2 = 1.75 GeV2 and xB = 0.36. The ed -> edπ0 cross sections are found compatible with the small values expected from theoretical models. The en -> enπ0 cross sections show a dominance from the response to transversely polarized photons, and are in good agreement with calculations based on the transversity generalized parton distributions of the nucleon. By combining these results with previous measurements of π0 electroproduction off the proton, we present a flavor decomposition of the u and d quark contributions to the cross section.

Comments

Research funded through Department of Energy (DOE) Grant Number DE-AC05060R23177.

Article is open access under the terms of the Creative Commons Attribution licence.

Original Publication Citation

Mazouz, M., Ahmed, Z., Albataineh, H., Allada, K., Aniol, K. A., Bellini, V., . . . Zhu, P. (2017). Rosenbluth separation of the π0 electroproduction cross section off the neutron. Physical Review Letters, 118(22). doi:10.1103/PhysRevLett.118.222002

ORCID

0000-0001-7282-8120 (Hyde)

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