Neutrino induced threshold production of two pions and N^*(1440) electroweak form factors

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dc.creatorHernandez, E.
dc.creatorNieves, J.
dc.creatorSingh, S. K.
dc.creatorValverde, M.
dc.creatorVicente-Vacas, M. J.
dc.date2007-10-18
dc.date2008-03-24
dc.date.accessioned2026-07-07T11:12:22Z
dc.date.available2026-07-07T11:12:22Z
dc.descriptionWe study the threshold production of two pions induced by neutrinos in nucleon targets. The contribution of nucleon, pion and contact terms are calculated using a chiral Lagrangian. The contribution of the Roper resonance, neglected in earlier studies, has also been taken into account. The numerical results for the cross sections are presented and compared with the available experimental data. It has been found that in the two pion channels with $π^+π^-$ and $π^0π^0$ in the final state, the contribution of the $N^*(1440)$ is quite important and could be used to determine the $N^*(1440)$ electroweak transition form factors if experimental data with better statistics become available in the future.
dc.descriptionThis version corrects a mistake on the helicity amplitudes sign. Additional comments on resonance-background relative sign are added. Other minor corrections. Matches published version. 17 pages, 7 figures
dc.identifierhttps://arxiv.org/abs/0710.3562
dc.identifierhttp://arxiv.org/abs/0710.3562
dc.identifierPhys.Rev.D77:053009,2008
dc.identifierdoi:10.1103/PhysRevD.77.053009
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/191363
dc.subjectHigh Energy Physics - Phenomenology
dc.titleNeutrino induced threshold production of two pions and N^*(1440) electroweak form factors
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