Axial-vector nucleon-to-delta transition form factors using the complex-mass renormalization scheme

Unal Y., KÜÇÜKARSLAN A., Scherer S.

PHYSICAL REVIEW D, cilt.104, sa.9, 2021 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 104 Sayı: 9
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1103/physrevd.104.094014
  • Dergi Adı: PHYSICAL REVIEW D
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, INSPEC, zbMATH
  • Çanakkale Onsekiz Mart Üniversitesi Adresli: Evet

Özet

We investigate the axial-vector nucleon-to-delta transition form factors in the framework of relativistic baryon chiral perturbation theory at the one-loop order using the complex-mass renormalization scheme. We determine the available six free parameters by fitting to an empirical parametrization of the form factors obtained from the BNL neutrino bubble chamber experiments. A unique feature of our calculation is the prediction of a nonvanishing form factor C-3(A)(Q(2)). Moreover, our results show a surprising sensitivity to the coupling constant g1 of the leading-order Lagrangian L-pi Delta((1)).