Quark Spin-flip in Pomeron Exchange

Details Quark Spin-flip in Pomeron Exchange Quark Spin-flip in Pomeron Exchange

2005-08-25

arxiv.org/abs/hep-ph/0508262v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Summary of talk given at the XIth International Conference on Elastic and Diffractive Scattering, Chateau de Blois, France, Ma

Scientific paper

It has been shown that the energy dependence of the reaction gamma p -->
b1(1235) requires a contribution from pomeron exchange. This necessitates
spin-flip at the quark level as the transition is from a 3S1 state to a 1P1
state. The same mechanism occurs in the reaction pi p --> a1(1260) p, which is
a 1S0 to 3P1 transition.

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