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- W1751350998 abstract "can be illuminating in this respect. We also comment on the angular structure of the Pomeron-parton coupling as borne out in the polarization data where the often-asumeds-channel helicity conservation is seen to be broken. g and process is akin to vector meson scattering. Among the light mesons, the is especially attractive because of its almost pure js si valence quark content. Assum- ing a suppressed strange-quark content in the proton, p scattering is OZI suppressed. The dominant t-channel exchange is via gluon-rich objects like the so-called uni- versal Pomeron trajectory, that is expected to dominate photoproduction at all energies. The same OZI-suppression also means that the cross- sections are much lower than those for or!. As a result, world data on the have been extremely scarce. The recent high-statistics and wide kinematic coverage results from CLAS (1) have completely altered this situation. With detailed results on both cross-sections and the spin density matrix elements (SDME), photoproduction is now as much as as a precision measurement as for the OZI-favored and !. In this Letter, we comment on some of the important features in these new results. The most prominent feature is a local structure at around the center-of-mass (c.m) energy p s 2:2 GeV that is not expected in a simple t-channel Pomeron- exchange model. Similar indications were also seen in previous results from LEPS (2). Two dierent explana-" @default.
- W1751350998 created "2016-06-24" @default.
- W1751350998 creator A5011602943 @default.
- W1751350998 date "2014-03-14" @default.
- W1751350998 modified "2023-09-27" @default.
- W1751350998 title "Phenomenology of $phi$ photoproduction from recent CLAS data at Jefferson Lab" @default.
- W1751350998 hasPublicationYear "2014" @default.
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