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$Q^2$ Independence of $QF_2/F_1$, Poincare Invariance and the Non-Conservation of Helicity

Gerald A. Miller·Michael R. Frank
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Abstract

A relativistic constituent quark model is found to reproduce the recent data regarding the ratio of proton form factors, $F_2(Q^2)/F_1(Q^2)$. We show that imposing Poincare invariance leads to substantial violation of the helicity conservation rule, as well as an analytic result that the ratio $F_2(Q^2)/F_1(Q^2)\sim 1/Q$ for intermediate values of $Q^2$.

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Gerald A. Miller, Michael R. Frank. 2002-01-29. $Q^2$ Independence of $QF_2/F_1$, Poincare Invariance and the Non-Conservation of Helicity. https://doi.org/10.1103/physrevc.65.065205

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