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Measurement of density matrix elements for rho meson production at large |t| |
| Reference |
N.N., to be presented at DIS 2001, April 2001 |
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| Contact |
Pierre Marage |
| Abstract |
A sample of e^+ pi^+ pi^- events with Q^2 > 2.5 GeV^2, 40 < W < 120 GeV and a measured value of |t| in the range 0.5 < |t| < 3 GeV^2 is used to extract the density matrix elements r^04_00, which is related to the ratio of longitudinal to transverse photon cross section, and r^5_00, which is related to the dominant spin flip amplitude T_(lambda_rho=0, lambda_gamma=1). The |t| dependence of r^04_00 and r^5_00 are determined. |
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