Low Q**2, high neutrino nu physics (CVC, PCAC, hadron dominance)
Oct 27, 199296 pages
Published in:
- Int.J.Mod.Phys.A 8 (1993) 1513-1602
Report number:
- IIHE-92-02
Citations per year
Abstract: (WSP)
A critical review is given of the main theoretical bases and of the experimental results of neutrino physics at low four-momentum transfer (Q2≤1 GeV2) and high energy transfer (ν≥a few GeV). The theoretical predictions for the vector current are first presented, using the CVC hypothesis and the hadron dominance model of Piketty and Stodolsky. The predictions for the axial current at very small Q2 values are discussed on the basis of the PCAC hypothesis (Adler’s theorem), and extended for Q2≲1 GeV2 in the lines of hadron dominance; the structure of the longitudinal component of the axial current is particularly discussed. Experimental data on neutrino and antineutrino interactions on nucleons are reviewed, in particular the total cross sections, which provide good tests of the PCAC hypothesis and of the model of Piketty and Stodolsky; also reviewed are the data on diffractive production of π, ρ and a1 mesons. The observation of shadowing, from the comparison of the total cross sections of neutrinos and ant...- review
- CVC model
- PCAC model
- neutrino nucleon: interaction
- interaction: neutrino nucleon
- neutrino nucleus: interaction
- interaction: neutrino nucleus
- neutrino nucleus: coherent interaction
- coherent interaction: neutrino nucleus
- effect: shadowing
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