• General bounds on the isovector coupling constants of the weak neutral current

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    • Keywords


      Neutral current; weak interaction; isovector couplings; general bounds; octagonal inequality; variational procedure; Bjorken scaling; neutrino scattering

    • Abstract


      We show that experimental data on inclusive neutrino reactions can be used to obtain general bounds on the coupling constants of the isovector part of the hadronic weak neutral current provided this isovector current is related to the charged current by isospin rotation. These bounds are free from the assumption of a specific model for the neutral current as well as any dynamical assumption on the hadronic structure functions. We derive upper bounds on the coupling constants which involve only the cross sections for isospin-averaged nucleon target as well as lower bounds which require a knowledge of the cross sections for proton and neutron separately.

    • Author Affiliations


      G Rajasekaran1 K V L Sarma1

      1. Tata Institute of Fundamental Research, Bombay - 400005
    • Dates

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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