IFLP   13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
artículos
Título:
One pion production in neutrino-nucleon scattering and the different parametrizations of the weak N → Delta vertex
Autor/es:
C. BARBERO; G. LOPEZ CASTRO; A. MARIANO
Revista:
PHYSICS LETTERS B
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2014 vol. 728 p. 282 - 287
ISSN:
0370-2693
Resumen:
The N→Δ weakvertex provides an important contribution to the one pion production in neutrino?nucleon and neutrino?nucleus scattering for πN invariant masses below 1.4GeV. Beyond its interest as a tool in neutrino detection and their background analyses, one pion production in neutrino?nucleon scattering is useful to test predictions based on the quark model and other internal symmetries of strong interactions. Here we try to establish a connection between two commonly used parameterizations of the weak N→Δ vertex and form factors (FF) and we study their effects on the determination of the axial coupling CA5(0), the common normalization of the axial FF, which is predicted to hold 1.2 by using the PCAC hypothesis. Predictions for the νμp→μ−pπ+ total cross sections within the two approaches, which include the resonant Δ++ and other background contributions in a coherent way, are compared to experimental data.