Momentum transfer dependence of the proton's electric and magnetic polarizabilities
Date
2014
Authors
Hall, N.
Thomas, A.
Young, R.
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Journal article
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Physical Review D: Particles, Fields, Gravitation and Cosmology, 2014; 89(11):117502-1-117502-4
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N. L. Hall, A.W. Thomas and R. D. Young
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Abstract
The Q²-dependence of the sum of the electric and magnetic polarizabilities of the proton is calculated over the range 0≤Q²≤6 GeV² using the generalized Baldin sum rule. Employing a parametrization of the F₁ structure function valid down to Q²=0.06 GeV², the polarizabilities at the real photon point are found by extrapolating the results of finite Q² to Q²=0 GeV². We determine the evolution over four-momentum transfer to be consistent with the Baldin sum rule using photoproduction data, obtaining α+β=13.7±0.7×10¯⁴ fm³.
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© 2014 American Physical Society