Publicación:
Measurement of νμ charged-current single π0 production on hydrocarbon in the few-GeV region using MINERvA
Measurement of νμ charged-current single π0 production on hydrocarbon in the few-GeV region using MINERvA
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Fecha
2017
Autores
Altinok O.
Le T.
Aliaga L.
Bellantoni L.
Bercellie A.
Betancourt M.
Bodek A.
Bravar A.
Budd H.
Caceres Vera G.F.R.
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American Physical Society
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Abstracto
The semiexclusive channel νμ þ CH → μ−π0 þ nucleonðsÞ is analyzed using MINERvA exposed to the
low-energy NuMI νμ beam with spectral peak at Eν ≃ 3 GeV. Differential cross sections for muon
momentum and production angle, π0 kinetic energy and production angle, and for squared four-momentum
transfer are reported, and the cross section σðEνÞ is obtained over the range 1.5 GeV ≤ Eν < 20 GeV.
Results are compared to GENIE and NuWro predictions and to published MINERvA cross sections for
charged-current πþðπ0Þ production by νμðν¯μÞ neutrinos. Disagreements between data and simulation are
observed at very low and relatively high values for muon angle and for Q2 that may reflect shortfalls in
modeling of interactions on carbon. For π0 kinematic distributions, however, the data are consistent with
the simulation and provide support for generator treatments of pion intranuclear scattering. Using signalevent subsamples that have reconstructed protons as well as π0 mesons, the pπ0 invariant mass distribution
is obtained, and the decay polar and azimuthal angle distributions in the rest frame of the pπ0 system are
measured in the region of Δð1232Þþ production, W < 1.4 GeV.
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Palabras clave
Neutral pion (π0) production,
Charged-current neutrino interactions,
MINERvA experiment