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 Φh 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.
Aghasyan, M., Avakian, H., Rossi, P., De Sanctis, E., Hasch, D., Mirazita, M., Adikaram, D., Amaryan, M. J., Anghinolfi, M., Baghdasaryan, H., Ball, J., Battaglieri, M., Batourine, V., Bedlinskiy, I., Bennett, R. P., Biselli, A. S., Branford, D., Briscoe, W. J., ... Zhao, Z. W. (2011). Precise Measurements of Beam Spin Asymmetries in Semi-Inclusive π<sup>0</sup> production. Physics Letters. B, 704(5). https://doi.org/10.1016/j.physletb.2011.09.044
@article{osti_1026792,
author = {Aghasyan, M. and Avakian, H. and Rossi, P. and De Sanctis, E. and Hasch, D. and Mirazita, M. and Adikaram, D. and Amaryan, M. J. and Anghinolfi, M. and Baghdasaryan, H. and others},
title = {Precise Measurements of Beam Spin Asymmetries in Semi-Inclusive π<sup>0</sup> production},
annote = {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 Φh 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.},
doi = {10.1016/j.physletb.2011.09.044},
url = {https://www.osti.gov/biblio/1026792},
journal = {Physics Letters. B},
issn = {ISSN 0370-2693},
number = {5},
volume = {704},
place = {United States},
publisher = {Elsevier},
year = {2011},
month = {10}}
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 503, Issue 3https://doi.org/10.1016/s0168-9002(03)01001-5
SPIN 2002: 15th International Spin Physics Symposium and Workshop on Polarized Electron Sources and Polarimeters, AIP Conference Proceedingshttps://doi.org/10.1063/1.1607183
DEEP INELASTIC SCATTERING: 13th International Workshop on Deep Inelastic Scattering; DIS 2005, AIP Conference Proceedingshttps://doi.org/10.1063/1.2122193
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 503, Issue 3https://doi.org/10.1016/S0168-9002(03)01001-5