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Electroweak form factors of non-strange baryons

Dirk Merten·Ulrich Loering·Klaus Kretzschmar·Bernard Metsch·Herbert-R. Petry
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Abstract

We compute electroweak form factors of the nucleon and photon transition form factors of non-strange baryon resonances up to the third resonance region in a model with instanton-induced interaction. The calculation is based on the Bethe-Salpeter equation for three light constituent quarks and is fully relativistic (U. Löring {\it et al.}, Eur. Phys. J. {\bf A10}, 309 (2001)). Static nucleon properties and photon resonance couplings are in good agreement with experiment and the $Q^2$-behaviour of the experimentally known form factors up to large momentum transfer is accounted for.

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Dirk Merten, Ulrich Loering, Klaus Kretzschmar, Bernard Metsch, Herbert-R. Petry. 2002-04-02. Electroweak form factors of non-strange baryons. https://arxiv.org/abs/hep-ph/0204024

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