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Neutrino and axion emissivities of neutron stars from nucleon-nucleon scattering data

Christoph Hanhart·Daniel R. Phillips·Sanjay Reddy
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Abstract

Neutrino and axion production in neutron stars occurs mainly as bremsstrahlung from nucleon-nucleon (NN) scattering. The energy radiated via neutrinos or axions is typically very small compared to other scales in the two-nucleon system. The rate of emission of such "soft" radiation is directly related to the on-shell NN amplitude, and thereby to the NN experimental data. This facilitates the model-independent calculation of the neutrino and axion radiation rates which is presented here. We find that the resultant rates are a factor of four below earlier estimates based on a one-pion-exchange NN amplitude.

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Christoph Hanhart, Daniel R. Phillips, Sanjay Reddy. 2000-06-22. Neutrino and axion emissivities of neutron stars from nucleon-nucleon scattering data. https://doi.org/10.1016/s0370-2693(00)01382-4

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