Q2 Independence of QF2/F1, Poincare Invariance and the Non-Conservation of Helicity
Gerald A. Miller, Michael R. Frank
Abstract
A relativistic constituent quark model is found to reproduce the recent data regarding the ratio of proton form factors, F2(Q2)/F1(Q2). We show that imposing Poincare invariance leads to substantial violation of the helicity conservation rule, as well as an analytic result that the ratio F2(Q2)/F1(Q2) 1/Q for intermediate values of Q2.
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