Neutrino-induced forward meson-production reactions in nucleon resonance region

作者：Kamano H^*; Nakamura S X; Lee T S H; Sato T

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2012, 86(9): 097503.

DOI：10.1103/PhysRevD.86.097503

As a first step toward developing a reaction model that enables a comprehensive description of neutrino-nucleon reactions in the nucleon resonance region, we have applied for the first time a dynamical coupled-channels model, which successfully describes pi N, gamma N --> pi N, eta N, pi pi N, K Lambda, and K Sigma reactions up to W = 2 GeV, to predict the neutrino-induced meson production reactions with Delta S = 0 at the forward-angle limit. This has been achieved by relating the divergence of the axial current matrix elements at Q(2) = 0 to the pi N --> X reaction amplitudes through the partially conserved axial current hypothesis. We present the contributions from each of the pi N, eta N, pi pi N, K Lambda, and K Sigma channels to the F-2 structure function at the Q(2) --> 0 limit up to W = 2 GeV.

• 出版日期2012-11-8