About estimations of an one-photon background in neutrino oscillation experiments at low neutrino energies

  • V. P. Efrosinin
  • Published 2006

Abstract

The possible sources of one-photon radiation as background for quasielastic reaction νμ + n → μ + p are considered. The ones are relevant in experiments on determination of oscillation parameters at low neutrino energies (Eν ∼ 1 GeV ). The estimation for the cross section of reaction νμ + n → μ + p + γ is given at E ν = 0.7 GeV as 0.65% from the corresponding cross section of quasi-elastic reaction. The mechanisms of quasielastic reaction are also considered at low neutrino energies on quark level. The current now accelerator experiments on νμ − νe neutrino oscillation deal with neutrino beams at low energies (Eν ∼ 1 GeV ). To shed liht on the neutrino oscillation parameters, the rather precise knowledge of the neutrino-nucleon interactions in this energy region is required. Since Cherenkov detectors employed in these experiments poorly distinguish an electron from a photon, it is extremely important to study the possible background from other reactions with one or two photons to the main quasi-elastic reaction a neutrino on a nucleon: νμ + n → μ− + p. (1) In this work we give estimations of the cross-sections of the processes, wich are interested for us, at neutrino energy in laboratory system E ν = 0.7 GeV . The processes with neutral currents νμ + p → νμ + p, νμ + n → νμ + n (2)

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Cite this paper

@inproceedings{Efrosinin2006AboutEO, title={About estimations of an one-photon background in neutrino oscillation experiments at low neutrino energies}, author={V. P. Efrosinin}, year={2006} }