Pion Production in High-Energy Neutrino Reactions with Nuclei

Ulrich Mosel

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Pion Production in High-Energy Neutrino Reactions with Nuclei

Ulrich Mosel

Nuclear Theory · Submitted 27 Feb 2015

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim [Conclusions] Final state interactions affect the pion kinetic energy spectra significantly.

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What the abstract itself states, as probabilities: claims first 0.02 · states limitation 0.76 · human participants 0.02 · controlled comparison 0.12 · randomized assignment 0.01 · states quantitative result 0.09 · compares with prior results 0.96 · mentions code or data availability 0.02.

The abstract, sentence by sentence

arXiv listing abstract v3. Results and the main claim are underlined; show every role.

[Background] A quantitative understanding of neutrino interactions with nuclei is needed for precision era neutrino long baseline experiments (MINOS, NOvA, DUNE) which all use nuclear targets. Pion production is the dominant reaction channel at the energies of these experiments. [Purpose] Investigate the influence of nuclear effects on neutrino-induced pion production cross sections and compare predictions for pion-production with available data. [Method] The Giessen Boltzmann--Uehling--Uhlenbeck (GiBUU) model is used for the description of all incohrent channels in neutrino-nucleus reactions. [Results] Differential cross sections for charged and neutral pion production for the MINER$\nu$A neutrino and antineutrino flux are calculated. An estimate for the coherent cross section is obtained from a comparison of data with theoretical results. The invariant mass ($W$) distribution of the $\Delta$ resonances produced is analyzed. [Conclusions] Final state interactions affect the pion kinetic energy spectra significantly. The data for charged pion production at MINER$\nu$A are compatible with the results of calculations using elementary data taken from an old Argonne National Laboratory experiment. Remaining differences can be attributed to coherent production; the data for antineutrino induced neutral pion production, where no coherent contribution is present, are reproduced quite well. In contrast, the MiniBooNE data, taken at a lower energy, are consistently higher than the theoretical description. The analysis of $W$-distributions shows that experimental cuts on this quantity lead to shape distortions for nuclear targets.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#	sentence	role	the authors' own work	states the main conclusion	strength
s0	[Background] A quantitative understanding of neutrino interactions with nuclei is needed for precision era neutrino long baseline experiments (MINOS, NOvA, DUNE) which all use nuclear targets.	background 1.00	0.04	0.02	asserted 0.99
s1	Pion production is the dominant reaction channel at the energies of these experiments.	background 1.00	0.05	0.02	asserted 1.00
s2	[Purpose] Investigate the influence of nuclear effects on neutrino-induced pion production cross sections and compare predictions for pion-production with available data.	contribution 0.96	0.40	0.02	unclear 0.63
s3	[Method] The Giessen Boltzmann--Uehling--Uhlenbeck (GiBUU) model is used for the description of all incohrent channels in neutrino-nucleus reactions.	method 1.00	0.71	0.01	asserted 0.99
s4	[Results] Differential cross sections for charged and neutral pion production for the MINER$\nu$A neutrino and antineutrino flux are calculated.	result 0.88	0.94	0.03	asserted 0.99
s5	An estimate for the coherent cross section is obtained from a comparison of data with theoretical results.	result 0.93	0.90	0.04	asserted 0.99
s6	The invariant mass ($W$) distribution of the $\Delta$ resonances produced is analyzed.	contribution 0.53	0.90	0.02	asserted 0.90
s7	[Conclusions] Final state interactions affect the pion kinetic energy spectra significantly.	result 0.63	0.89	0.71	asserted 1.00
s8	The data for charged pion production at MINER$\nu$A are compatible with the results of calculations using elementary data taken from an old Argonne National Laboratory experiment.	result 0.94	0.77	0.11	hedged possibility 0.65
s9	Remaining differences can be attributed to coherent production; the data for antineutrino induced neutral pion production, where no coherent contribution is present, are reproduced quite well.	interpretation 0.77	0.82	0.12	asserted 0.65
s10	In contrast, the MiniBooNE data, taken at a lower energy, are consistently higher than the theoretical description.	result 0.97	0.73	0.06	asserted 1.00
s11	The analysis of $W$-distributions shows that experimental cuts on this quantity lead to shape distortions for nuclear targets.	result 0.97	0.90	0.07	asserted 1.00

What kind of paper the classifier reports this is: simulation study 0.98 · evidence from simulation or computation 0.89.

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arXiv listing abstract v3

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full text
figures and tables
references and citing sentences
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T body sentences
C citations
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Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper

Original abstract

[Background] A quantitative understanding of neutrino interactions with nuclei is needed for precision era neutrino long baseline experiments (MINOS, NOvA, DUNE) which all use nuclear targets. Pion production is the dominant reaction channel at the energies of these experiments. [Purpose] Investigate the influence of nuclear effects on neutrino-induced pion production cross sections and compare predictions for pion-production with available data. [Method] The Giessen Boltzmann--Uehling--Uhlenbeck (GiBUU) model is used for the description of all incohrent channels in neutrino-nucleus reactions. [Results] Differential cross sections for charged and neutral pion production for the MINER$\nu$A neutrino and antineutrino flux are calculated. An estimate for the coherent cross section is obtained from a comparison of data with theoretical results. The invariant mass ($W$) distribution of the $\Delta$ resonances produced is analyzed. [Conclusions] Final state interactions affect the pion kinetic energy spectra significantly. The data for charged pion production at MINER$\nu$A are compatible with the results of calculations using elementary data taken from an old Argonne National Laboratory experiment. Remaining differences can be attributed to coherent production; the data for antineutrino induced neutral pion production, where no coherent contribution is present, are reproduced quite well. In contrast, the MiniBooNE data, taken at a lower energy, are consistently higher than the theoretical description. The analysis of $W$-distributions shows that experimental cuts on this quantity lead to shape distortions for nuclear targets.

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References

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7 arXiv papers cite this in 9 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers whose main result relates to this one's

Found among the papers closest to this one by title and main claim. Pith's classifier compared each pair's main results and a second model family confirmed the relation; checked against two further families, shown conflicts agreed 118 times in 120 and shown same results 218 times in 239. The quoted sentence is the other paper's main claim.

States the same result 1 paper

It is shown, that final state interaction can noticeably change the spectra of the outgoing hadrons.

Neutrino nucleus reactions at high energies within the GiBUU model · 0.92

Papers citing it · 6 sentences without a confident label

Compares with it 2 papers

Here, theoretical calculation by GiBUU is compared with MiniBooNE [ref] (left) and MINERvA data [ref] (right).

Neutrino-Nucleus Cross Sections for Oscillation Experiments · Flux-integrated cross section · 0.92
Predictions from the GiBUU model can be found in Refs. [ref] .

Charged Pion Production in $\nu_\mu$ Interactions on Hydrocarbon at $\langle E_{\nu}\rangle$= 4.0 GeV · Models · 0.86

Cites it as background 1 paper

One of the interesting processes of neutrino-nucleon scattering is the production of the lowest-lying Delta state [ref] .

Low-energy axial-vector transitions from decuplet to octet baryons · Introduction and summary · 0.97

What it cites · 54 sentences without a confident label

Contests 1 paper

This model does not describe the $π-N-Δ$ dynamics correctly and indeed the authors of [ref] themselves ascribe the failure of the model to describe the MINER$ν$A data to the absence of all pion-nucleon interactions, except for absorption, in that model.

Comparison of the ANP model with the data for neutrino induced single pion production from the MiniBooNE and MINER$\nu$A experiments · Method · contest 0.94

Builds on 2 papers

While first results were already contained in [ref] in the present paper now a detailed comparison with MINER$ν$A data is performed using their flux and invariant mass cuts.

Neutrino- and antineutrino-induced reactions with nuclei between 1 and 50 GeV · Introduction · 0.94
While first results were already contained in [ref] in the present paper now a detailed comparison with MINER$ν$A data is performed using their flux and invariant mass cuts.

Reaction Mechanisms at MINER$\nu$A · Introduction · 0.94

Uses the method or tool of 6 papers

In GiBUU these resonances are treated explicitly; they become excited and then are being propagated until they decay or collide with other nucleons; this is described in some detail in [ref] .

Transport-theoretical Description of Nuclear Reactions · Method · 0.89
The production cross section at fixed neutrino energy is then given by (cf. [ref] where all the details can be found) [equation] Here $f_corr$ is a flux correction factor, $f_corr = (k ·p)/(k^0p^0)$; $k$ and $p$ denote the four-momenta of the neutrino and nucleon momentum, respectively. $𝒫_PB(𝐫,𝐩)$ describes the Pauli-blocking and the factor $F_π(𝐪_π, 𝐫)$ in ([ref]) describes the effects of all the FSI contained in GiBUU.

Charged Current Neutrino Nucleus Interactions at Intermediate Energies · Method · 0.90
Therefore, for the FSI process $π+ N →Δ→π+ N$ a more sophisticated parametrization of the $p$-wave behavior of the $Δ$ decay is used as explained in detail in [ref] .

Pion induced double charge exchange reactions in the Delta resonance region · Method · 0.93

Uses data or values from 1 paper

In this paper primarily the recent MINER$ν$A data on charged pion production [ref] were analyzed.

Charged Pion Production in $\nu_\mu$ Interactions on Hydrocarbon at $\langle E_{\nu}\rangle$= 4.0 GeV · Summary and Conclusion · 0.96

Compares with 7 papers

In Fig. [ref] the calculated kinetic energy distribution for the sum of $π^+$ and $π^-$ is shown in comparison with the data [ref] .

Charged Pion Production in $\nu_\mu$ Interactions on Hydrocarbon at $\langle E_{\nu}\rangle$= 4.0 GeV · Charged pion production in the neutrino beam · 0.89
The extensive pion production data from the MiniBooNE experiment [ref] obtained on a CH$_2$ target are consistently higher than the ones calculated within GiBUU, both for the ANL and – less so – for the BNL input cross sections [ref] .

Measurement of Neutrino-Induced Charged-Current Charged Pion Production Cross Sections on Mineral Oil at E$_{\nu}\sim 1~\textrm{GeV}$ · Method · 0.89
The extensive pion production data from the MiniBooNE experiment [ref] obtained on a CH$_2$ target are consistently higher than the ones calculated within GiBUU, both for the ANL and – less so – for the BNL input cross sections [ref] .

Measurement of $\nu_\mu$-induced charged-current neutral pion production cross sections on mineral oil at $E_\nu\in0.5-2.0$ GeV · Method · 0.89

Cites as support 1 paper

It was shown in [ref] that the flux cuts used by the MINER$ν$A experiment can significantly distort the event rates, requiring a fairly large and generator-dependent correction through energy-migration matrices.

Reaction Mechanisms at MINER$\nu$A · Summary and Conclusion · 0.96

Cites as background 4 papers

Over the last few years valuable insight into the neutrino-induced pion production on nuclei at lower energies has been obtained mainly from the MiniBooNE experiment [ref] .

Measurement of $\nu_\mu$-induced charged-current neutral pion production cross sections on mineral oil at $E_\nu\in0.5-2.0$ GeV · Introduction · 0.96
Over the last few years valuable insight into the neutrino-induced pion production on nuclei at lower energies has been obtained mainly from the MiniBooNE experiment [ref] .

Pion production in the MiniBooNE experiment · Introduction · 0.96
Over the last few years valuable insight into the neutrino-induced pion production on nuclei at lower energies has been obtained mainly from the MiniBooNE experiment [ref] .

Single pion production in neutrino nucleus scattering · Introduction · 0.96

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