Ratios of Helicity Amplitudes for Exclusive rho-0 Electroproduction

Details Ratios of Helicity Amplitudes for Exclusive rho-0 Electroproduction Ratios of Helicity Amplitudes for Exclusive rho-0 Electroproduction

2010-12-16

arxiv.org/abs/1012.3676v2

EPJ C 71 (2011), 1609

Physics

High Energy Physics

High Energy Physics - Experiment

27 pages, 8 tables, 13 figures; minor textual changes on pages 2, 3,9, 10, 11, and some changes to the list of references

Scientific paper

10.1140/epjc/s10052-011-1609-2

Exclusive rho^0-meson electroproduction is studied in the HERMES experiment, using a 27.6 GeV longitudinally polarized electron/positron beam and unpolarized hydrogen and deuterium targets in the kinematic region 0.5 GeV^2 < Q^2 < 7.0 GeV^2, 3.0 GeV < W < 6.3 GeV, and -t' < 0.4 GeV^2. Real and imaginary parts of the ratios of the natural-parity-exchange helicity amplitudes T_{11} (\gamma^*_T --> \rho_T), T_{01} (\gamma^*_T --> \rho_L), T_{10} (\gamma^*_L --> \rho_T), and T_{1-1} (\gamma^*_{-T} -->\rho_T) to T_{00} (\gamma^*_L --> \rho_L) are extracted from the data. For the unnatural-parity-exchange amplitude U_{11}, the ratio |U_{11}/T_{00}| is obtained. The Q^2 and t' dependences of these ratios are presented and compared with perturbative QCD predictions.

Affiliated with

Also associated with

No associations

Rating

Ratios of Helicity Amplitudes for Exclusive rho-0 Electroproduction does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Ratios of Helicity Amplitudes for Exclusive rho-0 Electroproduction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ratios of Helicity Amplitudes for Exclusive rho-0 Electroproduction will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-219733