Precise measurements of beam spin asymmetries in semi-inclusive π0 production

M. Aghasyan; H. Avakian; P. Rossi; E. De Sanctis; D. Hasch; M. Mirazita; D. Adikaram; M. J. Amaryan; Angela Biselli

doi:10.1016/j.physletb.2011.09.044

Precise measurements of beam spin asymmetries in semi-inclusive π0 production

M. Aghasyan, H. Avakian, P. Rossi, E. De Sanctis, D. Hasch, M. Mirazita, D. Adikaram, M. J. Amaryan, Angela Biselli

Fairfield University

Research output: Contribution to journal › Article › peer-review

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 amplitude has been measured in the distribution of the cross section asymmetry as a function of the azimuthal angle 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.

Original language	American English
Journal	Physics Letters B
Volume	704
DOIs	https://doi.org/10.1016/j.physletb.2011.09.044
State	Published - Jan 1 2011

Disciplines

Physical Sciences and Mathematics
Physics

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https://doi.org/10.1016/j.physletb.2011.09.044

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title = "Precise measurements of beam spin asymmetries in semi-inclusive π0 production",

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 amplitude has been measured in the distribution of the cross section asymmetry as a function of the azimuthal angle 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.",

author = "M. Aghasyan and H. Avakian and P. Rossi and \{De Sanctis\}, E. and D. Hasch and M. Mirazita and D. Adikaram and Amaryan, \{M. J.\} and Angela Biselli",

year = "2011",

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doi = "10.1016/j.physletb.2011.09.044",

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T1 - Precise measurements of beam spin asymmetries in semi-inclusive π0 production

AU - Aghasyan, M.

AU - Avakian, H.

AU - Rossi, P.

AU - De Sanctis, E.

AU - Hasch, D.

AU - Mirazita, M.

AU - Adikaram, D.

AU - Amaryan, M. J.

AU - Biselli, Angela

PY - 2011/1/1

Y1 - 2011/1/1

N2 - 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 amplitude has been measured in the distribution of the cross section asymmetry as a function of the azimuthal angle 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.

AB - 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 amplitude has been measured in the distribution of the cross section asymmetry as a function of the azimuthal angle 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.

UR - https://digitalcommons.fairfield.edu/physics-facultypubs/159

UR - https://doi.org/10.1016/j.physletb.2011.09.044

U2 - 10.1016/j.physletb.2011.09.044

DO - 10.1016/j.physletb.2011.09.044

M3 - Article

VL - 704

JO - Physics Letters B

JF - Physics Letters B

ER -

Precise measurements of beam spin asymmetries in semi-inclusive π0 production

Abstract

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