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Title: Charged current neutrino-induced coherent pion production

Abstract

We analyze the neutrino induced charged current coherent pion production at the energies of interest for recent experiments like K2K and MiniBooNE. Medium effects in the production mechanism and the distortion of the pion wave function, obtained solving the Klein Gordon equation with a microscopic optical potential, are included in the calculation. We find a strong reduction of the cross section due to these effects and also substantial modifications of the energy distributions of the final lepton and pion.

Authors:
; ;  [1];  [2]
  1. Departamento de Fisica Teorica and IFIC, Universidad de Valencia-CSIC, Institutos de Investigacion de Paterna, Aptdo. 22085, E-46071 Valencia (Spain)
  2. Department of Physics, Nara Women's University, Nara, 630-8506 (Japan)
Publication Date:
OSTI Identifier:
20995327
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 75; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevC.75.055501; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; CHARGED CURRENTS; CROSS SECTIONS; ENERGY SPECTRA; KLEIN-GORDON EQUATION; MODIFICATIONS; NEUTRINOS; PARTICLE PRODUCTION; PIONS; POTENTIALS; WAVE FUNCTIONS

Citation Formats

Alvarez-Ruso, L., Geng, L. S., Vacas, M. J. Vicente, and Hirenzaki, S. Charged current neutrino-induced coherent pion production. United States: N. p., 2007. Web. doi:10.1103/PHYSREVC.75.055501.
Alvarez-Ruso, L., Geng, L. S., Vacas, M. J. Vicente, & Hirenzaki, S. Charged current neutrino-induced coherent pion production. United States. doi:10.1103/PHYSREVC.75.055501.
Alvarez-Ruso, L., Geng, L. S., Vacas, M. J. Vicente, and Hirenzaki, S. Tue . "Charged current neutrino-induced coherent pion production". United States. doi:10.1103/PHYSREVC.75.055501.
@article{osti_20995327,
title = {Charged current neutrino-induced coherent pion production},
author = {Alvarez-Ruso, L. and Geng, L. S. and Vacas, M. J. Vicente and Hirenzaki, S.},
abstractNote = {We analyze the neutrino induced charged current coherent pion production at the energies of interest for recent experiments like K2K and MiniBooNE. Medium effects in the production mechanism and the distortion of the pion wave function, obtained solving the Klein Gordon equation with a microscopic optical potential, are included in the calculation. We find a strong reduction of the cross section due to these effects and also substantial modifications of the energy distributions of the final lepton and pion.},
doi = {10.1103/PHYSREVC.75.055501},
journal = {Physical Review. C, Nuclear Physics},
number = 5,
volume = 75,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}
  • No abstract prepared.
  • The SciBooNE Collaboration has performed a search for charged current coherent pion production from muon neutrinos scattering on carbon, nu{sub {mu}}{sup 12}C- {yields} {mu}{sup 12}Cpi{sup +}, with two distinct data samples. No evidence for coherent pion production is observed. We set 90% confidence level upper limits on the cross section ratio of charged current coherent pion production to the total charged current cross section at 0.67 x 10{sup -2} at mean neutrino energy 1.1 GeV and 1.36 x 10{sup -2} at mean neutrino energy 2.2 GeV.
  • SciBooNE is a neutrino experiment measuring the neutrino cross sections on carbon in the one GeV region. We have performed a search for charged current coherent pion production from muon neutrinos scattering on carbon, v{sub {mu}}{sup 12}C{yields}{mu}{sup -12}C{pi}{sup +}. No evidence for coherent pion production is observed. We set 90% confidence level upper limits on the cross section ratio of charged current coherent pion production to the total charged current cross section at 0.67x10{sup -2} at mean neutrino energy 1.1 GeV and 1.36x10{sup -2} at mean neutrino energy 2.2 GeV. The kinematic distributions of the final data sample are alsomore » presented.« less
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  • We review the Rein-Sehgal model and criticize its use for low energy neutrino induced coherent pion production. We have studied the validity of the main approximations implicit in that model, trying to compare with physical observables when that is possible and with microscopical calculations. Next, we have tried to elaborate a new improved model by removing the more problematic approximations, while keeping the model still reasonably simple. Last, we have discussed the limitations intrinsic to any approach based on the partial conservation of the axial current hypothesis. In particular, we have shown the inability of such models to determine themore » angular distribution of the outgoing pion with respect to the direction of the incoming neutrino, except for the q{sup 2}=0 kinematical point.« less