Physical Review C
We studied the exclusive reaction ep → e' p' ᵠ using the ᵠ →K+K- decay mode. The data were collected using a 4.2 GeV incident electron beam and the CEBAF Large Acceptance Spectrometer (CLAS) at the Thomas Jefferson National Accelerator Facility. Our experiment covers the range in Q2 from 0.7 to 2.2 GeV2and W from 2.0 to 2.6 GeV. Taken together with all previous data, we find a consistent picture of ᵠ production on the proton. Our measurement shows the expected decrease of the t slope with the vector-meson formation time c Δ t below 2 fm. At c Δ t = 0.6 fm, we measure bɸ = 2.27 ± 0.42 GeV-2. The cross section dependence on W as W0.2 ±0.1 at Q2, 1.3 GeV2 was determined by comparison with ɸ production at HERA after correcting for threshold effects. This is the same dependence as observed in photoproduction.
Original Publication Citation
Bektasoglu, M., Dodge, G.E., Hyde-Wright, C.E., Kuhn, S.E., Qin, L.M., Weinstein, L.B., et al., The CLAS Collaboration (2001). Corrected article: Exclusive electroproduction of ᵠ mesons at 4.2 GeV [Physical. Rev. C 63, 065205, (2001)]. Physical Review C, 64(5), 1-11, Article 059901. https://doi.org/10.1103/PhysRevC.64.059901
0000-0003-1582-2376 (Dodge), 0000-0001-7282-8120 (Hyde-Wright), 0000-0003-2243-6836 (Kuhn)
Bektasoglu, M.; Ciciani, L.; Dodge, G. E.; Forest, T. A.; Hyde-Wright, C. E.; Kuhn, S. E.; Qin, L. M.; Sabatié, F.; Weinstein, L. B.; et al.; and The CLAS Collaboration, "Corrected Article: Exclusive Electroproduction of ᵠ Mesons at 4.2 GeV [Physical. Rev. C 63, 065205, (2001)]" (2001). Physics Faculty Publications. 495.