Mechanism for the double-spin asymmetry in electromagnetic ρ production at HERMES

N. I. Kochelev; D.-P. Min; A. V. Vinnikov; V. Vento

doi:10.1103/PhysRevD.65.097504

Mechanism for the double-spin asymmetry in electromagnetic ρ production at HERMES

N. I. Kochelev, D.-P. Min, A. V. Vinnikov, and V. Vento

Phys. Rev. D 65, 097504 – Published 2 May 2002

Abstract

We calculate the contribution of meson and Pomeron exchanges to the double-spin asymmetry in ρ-meson electromagnetic production at HERMES energies. We show that the observed double-spin asymmetries, which are large, can be explained by the interference between the natural parity $f_{2}$ -secondary Reggeon and the unnatural parity anomalous $f_{1}$ exchanges.

Received 9 January 2002

DOI:https://doi.org/10.1103/PhysRevD.65.097504

Authors & Affiliations

N. I. Kochelev^*

Bogoliubov Laboratory of Theoretical Physics, JINR, Dubna, Moscow region, 141980, Russia

D.-P. Min^† and A. V. Vinnikov^‡

School of Physics and Center for Theoretical Physics, Seoul National University, Seoul 151-747, Korea

V. Vento^§

Departament de Física Teòrica and Institut de Física Corpuscular, Universitat de València–CSIC, E-46100, Burjassot (Valencia), Spain

^*Also at Institute of Physics and Technology, Almaty, 480082, Kazakhstan. Electronic address: kochelev@thsun1.jinr.ru
^†Electronic address: dpmin@phya.snu.ac.kr
^‡Electronic address: vinnikov@phya.snu.ac.kr
^§Electronic address: vicente.vento@uv.es

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Vol. 65, Iss. 9 — 1 May 2002

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Physical Review D

covering particles, fields, gravitation, and cosmology