Quasielastic neutrino-nucleus scattering
Date
2004
Authors
Van Der Ventel B.I.S.
Piekarewicz J.
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Abstract
We study the sensitivity of neutral-current neutrino-nucleus scattering to the strange-quark content of the axial-vector form factor of the nucleon. A model-independent formalism for this reaction is developed in terms of eight nuclear-structure functions. Taking advantage of the insensitivity of the ratio of proton (v,p) to neutron (v,n) yields to distortion effects, we compute all structure functions in a relativistic plane-wave impulse approximation approach. Further, by employing the notion of a bound-state nucleon propagator, closed-form, analytic expressions for all nuclear-structure functions are developed in terms of an accurately calibrated relativistic mean-field model, Using a strange-quark contribution to the axial-vector form factor of g As= -0.19, a significant enhancement in the proton-to-neutron yields is observed relative to one with gAs=0.
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Physical Review C - Nuclear Physics
69
3
69
3