Contribution of Vector Meson Dominance to the Single-Spin Azimuthal Asymmetry in Semi-inclusive Pion Electro-Production

Chin. Phys. Lett.

2001, Vol. 18

Issue (8): 1021-1023 DOI:

Original Articles

Contribution of Vector Meson Dominance to the Single-Spin Azimuthal Asymmetry in Semi-inclusive Pion Electro-Production

XU Qing-Hua;LIANG Zuo-Tang

Department of Physics, Shandong University, Ji’nan, Shandong 250100

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XU Qing-Hua, LIANG Zuo-Tang 2001 Chin. Phys. Lett. 18 1021-1023

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Abstract We calculate the contribution of vector meson dominance to deeply inelastic lepton-nucleon scattering in the kinematic region of the HERMES experiment. The results obtained show that this contribution is quite significant. Together with the fact that there exist very striking left-right asymmetries for hadron produced in single-spin hadron-hadron collisions, these results imply that the single-spin azimuthal asymmetry observed by HERMES cannot be simply regarded as a pure fragmentation effect.

Keywords: 12.40.Vv 13.60.-r 13.88.+e

Published: 01 August 2001

PACS:	12.40.Vv	(Vector-meson dominance)
	13.60.-r	(Photon and charged-lepton interactions with hadrons)
	13.88.+e	(Polarization in interactions and scattering)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2001/V18/I8/01021

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