Friday, October 26, 2012

1210.6940 (C. Barbero et al.)

Single photon production $ν_l N\rightarrow ν_l N γ$ in
neutrino-nucleon scattering
   [PDF]

C. Barbero, A. Mariano
The quasielastic charged current (CCQE) $\nu_e n \rightarrow e^- p$ scattering is the dominant mechanism to detect appearance of a $\nu_e$ in an almost $\nu_\mu$ flux at the 1 GeV scale. Actual experiments show a precision below 1% and between less known background contributions, but necessary to constraint the event excess, we have the radiative corrections. A consistent model recently developed for the simultaneous description of elastic and radiative $\pi N$ scattering, pion-photoproduction and single pion production processes, both for charged and neutral current neutrino-nucleon scattering, is extended for the evaluation of the radiative $\nu_l N\rightarrow \nu_l N \gamma$ cross section. Our results are similar to a previous (but inconsistent) theoretical evaluation in the low energy region, and show an increment in the upper region where the $\Delta$ resonance becomes relevant.
View original: http://arxiv.org/abs/1210.6940

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