2,556 research outputs found
Extraction of Neutrino Flux with the Low Method at MiniBooNE Energies
We describe the application of the `low-' method to the extraction of
the neutrino flux at MiniBooNE energies. As an example, we extract the relative
energy dependence of the flux from published MiniBooNE quasielastic scattering
cross sections with GeV and GeV (here is the
energy transfer to the target). We find that the flux extracted from the
`low-' cross sections is consistent with the nominal flux used by
MiniBooNE. We fit the MiniBooNE cross sections over the entire kinematic range
to various parametrizations of the axial form factor. We find that if the
overall normalization of the fit is allowed to float within the normalization
errors, the extracted values of the axial vector mass are independent of the
flux. Within the Fermi gas model, the distribution of the MiniBooNE data
is described by a standard dipole form factor with GeV. If
nuclear transverse enhancement in the vector form factors is accounted for, the
data are best fit with a modified dipole form factor with
GeV.Comment: 5 pages, 6 figures, (presented by A. Bodek at CIPANP 2012, St.
Petersburg, FL, June 2012, and at NuFact 2012, Williamsburg, VA, July 2012
Two- and Three-particle States in a Nonrelativistic Four-fermion Model in the Fine-tuning Renormalization Scheme. Goldstone mode "against" extension theory
In a nonrelativistic contact four-fermion model we show that simple
regularisation prescriptions together with a definite fine-tuning of the
cut-off-parameter dependence of ``bare'' quantities give the exact solutions
for the two-particle sector and Goldstone modes. Their correspondence with the
self-adjoint extension into Pontryagin space is established leading to
self-adjoint semi-bounded Hamiltonians in three-particle sectors as well.
Renormalized Faddeev equations for the bound states with Fredholm properties
are obtained and analysed.Comment: 23 pages, LaTeX, changed content, added references and two figures,
to appear in the Few Body System
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