Polarisation in deeply virtual meson production
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✦ hep-ph
keywords
mesonpolarisationproductionaspectsdecaydeeplydifferentdiscuss
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We discuss two aspects of polarisation in hard exclusive meson production: the leading-twist selection rule for the meson helicity, and the different partial waves of a (pi pi)-pair which may or may not be due to the decay of a rho.
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