MINERvA neutrino detector response measured with test beam data

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Neutrino induced coherent charged pion production on nuclei,ν μ A → μ AE π ∓ A, is a rare inelastic interaction in which the four-momentum squared transferred to the nucleus is nearly zero, leaving it intact. We identify such events in the scintillator of MINERvA by reconstructing jtj from the final state pion and muon momenta and by removing events with evidence of energetic nuclear recoil or production of other final state particles. We measure the total neutrino and antineutrino cross sections as a function of neutrino energy between 2 and 20 GeV and measure flux integrated differential cross sections as a function of Q 2 , * Deceased.

Section: Neutrino Beam and Detectormentioning

confidence: 99%

Measurement of total and differential cross sections of neutrino and antineutrino coherent π± production on carbon

Mislivec¹,

Higuera²,

Aliaga³

et al. 2018

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“…MINERvA uses a fine-grained, plastic scintillator tracking detector [38,39] positioned upstream of the magnetized MINOS near detector [40], to record interactions of neutrinos from the high-intensity NuMI beam at Fermilab [41]. In the present analysis the spectrometer's central, scintillator tracking region serves as the target, with the surrounding electromagnetic and hadronic calorimeters providing containment.…”

Section: Overview Of Data and Analysismentioning

confidence: 99%

“…[38]. Subsequently the corrections were refined and validated using measurements obtained with a scaled-downed replicate of the detector operated in a low-energy particle test beam [39]. The test beam data, in conjunction with in-situ measurements, underwrite the determinations of tracking efficiencies and energy responses to protons, charged pions, and electrons, and of the value assigned to the Birks' constant of the scintillator.…”

Section: Detector Response Calibrations Event Isolationmentioning

confidence: 99%

Measurement of νμ charged-current single π0 production on hydrocarbon in the few-GeV region using MINERvA

Altinok¹,

Le²,

Aliaga³

et al. 2017

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The semi-exclusive channel νµ +CH → µ − π 0 +nucleon(s) 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, π 0 kinetic energy and production angle, and for squared fourmomentum transfer are reported, and the cross section σ(Eν ) 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 π + (π 0 ) production by νµ(νµ) neutrinos. Disagreements between data and simulation are observed at very low and relatively high values for muon angle and for Q 2 that may reflect shortfalls in modeling of interactions on carbon. For π 0 kinematic distributions however, the data are consistent with the simulation and provide support for generator treatments of pion intranuclear scattering. Using signal-event subsamples that have reconstructed protons as well as π 0 mesons, the pπ 0 invariant mass distribution is obtained, and the decay polar and azimuthal angle distributions in the rest frame of the pπ 0 system are measured in the region of ∆(1232) + production, W < 1.4 GeV.

“…Full descriptions of the design, calibration, and performance of the MINERvA detector configuration are available in Refs. [11,14].…”

Section: Overview Of the Experiments A Beam Detector And Exposuresmentioning

confidence: 99%

“…[11]. A scaled-down replica of the MINERvA detector, operated in a low-energy particle test beam, was used to establish the spectrometer's tracking efficiency and energy response to single hadrons, and to set the value for the Birks' constant of the scintillator [14]. The average deviation between data and GEANT4 for pions was 5%.…”

Section: Detector Responsementioning

confidence: 99%

Cross sections forνμandν¯μinduced pion production on hydrocarbon in the few-GeV region using MINERvA

McGivern¹,

Le²,

Eberly³

et al. 2016

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Cross sections for ν_{μ} and ν[over ¯]_{μ} induced pion production on hydrocarbon in the few-GeV region using MINERvA FERMILAB-PUB-16-228-NDCross sections for ν µ andν µ induced pion production on hydrocarbon in the few-GeV region using MINERvA Separate samples of charged-current pion production events representing two semi-inclusive channels νµ-CC(π + ) andνµ-CC(π 0 ) have been obtained using neutrino and antineutrino exposures of the MINERvA detector. Distributions in kinematic variables based upon µ ± -track reconstructions are analyzed and compared for the two samples. The differential cross sections for muon production angle, muon momentum, and four-momentum transfer Q 2 , are reported, and cross sections versus neutrino energy are obtained. Comparisons with predictions of current neutrino event generators are used to clarify the role of the ∆(1232) and higher-mass baryon resonances in CC pion production and to show the importance of pion final-state interactions. For the νµ-CC(π + ) (νµ-CC(π 0 )) sample, the absolute data rate is observed to lie below (above) the predictions of some of the event generators by amounts that are typically 1-to-2 σ. However the generators are able to reproduce the shapes of the differential cross sections for all kinematic variables of either data set.