Precise Measurements of Beam Spin Asymmetries in Semi-inclusive π⁰ Production

Authors

M. Aghasyan
H. Avakian
P. Rossi
E. De Sanctis
D. Hasch
M. Mirazita
D. Adikaram, Old Dominion University
M. J. Amaryan, Old Dominion UniversityFollow
M. Anghinolfi
H. Baghdasaryan, Old Dominion University
R. P. Bennett, Old Dominion University
S. Bültmann, Old Dominion UniversityFollow
G. E. Dodge, Old Dominion UniversityFollow
C. E. Hyde, Old Dominion UniversityFollow
A. Klein, Old Dominion University
S. E. Kuhn, Old Dominion UniversityFollow
M. Mayer, Old Dominion University
H. Seraydaryan, Old Dominion University
L. B. Weinstein, Old Dominion UniversityFollow

Document Type

Article

Publication Date

2011

DOI

10.1016/j.physletb.2011.09.044

Publication Title

Physics Letters B

Volume

704

Issue

5

Pages

397-402

Abstract

We present studies of single-spin asymmetries for neutral pion electroproduction in semi-inclusive deep-inelastic scattering of 5.776 GeV polarized electrons from an unpolarized hydrogen target, using the CEBAF Large Acceptance Spectrometer (CLAS) at the Thomas Jefferson National Accelerator Facility. A substantial sin phi(h) amplitude has been measured in the distribution of the cross section asymmetry as a function of the azimuthal angle φh of the produced neutral pion. The dependence of this amplitude on Bjorken x and on the pion transverse momentum is extracted with significantly higher precision than previous data and is compared to model calculations. (C) 2011 Elsevier B.V.

Comments

Open access under CC BY license.

Original Publication Citation

Aghasyan, M., Avakian, H., Rossi, P., De Sanctis, E., Hasch, D., Mirazita, M., . . . Baghdasaryan, H. (2011). Precise measurements of beam spin asymmetries in semi-inclusive π⁰ production. Physics Letters B, 704(5), 397-402. doi: 10.1016/j.physletb.2011.09.044

ORCID

0000-0003-1582-2376 (Dodge), 0000-0001-7282-8120 (Hyde), 0000-0001-5416-2900 (Weinstein)

Repository Citation

Aghasyan, M.; Avakian, H.; Rossi, P.; De Sanctis, E.; Hasch, D.; Mirazita, M.; Adikaram, D.; Amaryan, M. J.; Anghinolfi, M.; Baghdasaryan, H.; Bennett, R. P.; Bültmann, S.; Dodge, G. E.; Hyde, C. E.; Klein, A.; Kuhn, S. E.; Mayer, M.; Seraydaryan, H.; and Weinstein, L. B., "Precise Measurements of Beam Spin Asymmetries in Semi-inclusive π⁰ Production" (2011). Physics Faculty Publications. 84.
https://digitalcommons.odu.edu/physics_fac_pubs/84