We study the threshold production of two pions induced by neutrinos in nucleon targets. The contribution of nucleon pole, pion and contact terms is calculated using a chiral Lagrangian. The contribution of the Roper resonance, neglected in earlier studies, has also been taken into account.
Valverde Hermosilla, Manuel Nieves Pamplona, Juan Miguel Hernández Gajate, Eliecer Singh, Shri Krishna Vicente Vacas, Manuel José 2008 Production of Two Pions Induced by Neutrinos Modern Physics Letters A 23 27-30 2309 2312
