Slfw-pub-527 November 1968. Cw Espe,rimental Inporn1ation on Teie 7i* Phoi'oproduc'1'ion Amplitudes "
نویسنده
چکیده
Recent data on 7;* photoproduction at 3.4 GeV are used to investigate the nature of the amplitudes contributing to these processes. It is found that a large amplitude corresponding to natural-parity G = +I eschangs is necessary to exp1ai.n the data, even in the region t z-0.6 Ge-V2 where Reggeized p exchange must vanish. This implies a large contribution from some p' trajectory or from cnts, absorption, etc. The large G =-i-l exchange amplitzclc needed to explain the ~r-/a' ratio is only marginally consjsit'nl; wi:iih the vector domij;al:ce model.
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Slac - Pub -
We devise an algebra of currents and their first time-derivatives designed to damp at high momentum the asymptotic behavior of leptonpair scattering amplitudes from hadrons consequent from the local current algebra of Gell-Mann. Given certain criteria, the algebra we find is unique, and the commutators are expressed linearly in terms of the currents themselves, The Jacobi identity, however, is’...
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تاریخ انتشار 1968