Exclusive $ρ^{0}$ Production in Polarized DIS at SMC

Details Exclusive $ρ^{0}$ Production in Polarized DIS at SMC Exclusive $ρ^{0}$ Production in Polarized DIS at SMC

1999-06-04

arxiv.org/abs/hep-ex/9906008v1

Nucl.Phys.Proc.Suppl. 79 (1999) 529-531

Physics

High Energy Physics

High Energy Physics - Experiment

3 pages, LaTeX, 5 eps figures, talk given at DIS99

Scientific paper

10.1016/S0920-5632(99)00773-2

Preliminary spin cross section asymmetries for exclusive $\rho^{0}$ lepto-production, $\vec{\mu} + \vec{N} \to \mu' + N + \rho^{0} (\rho^{0} \to \pi^{+} \pi^{-})$, are reported. These asymmetries have been determined for the first time by the Spin Muon Collaboration (SMC) at low Q^2 (photoproduction) and at large Q^2 (DIS) for different $p_T^2$ intervals in the kinematic range $0.01 \simeq 15 GeV) for the full SMC data set. About 100 K $\rho^{0}$'s have been selected for $0.62 < m (\pi^{+} \pi^{-}) < 1.07 GeV/c^2$ and $|I|< 0.05$. Within the statistical precision, no significant asymmetries have been observed at low $Q^{2}$ in the preliminary results.

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