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arXiv · 2609.40237

First double-differential cross-section measurements in proton multiplicity and kinematics for mesonless $ν_μ$ charged-current interactions on argon using the MicroBooNE detector

MicroBooNE collaboration·P. Abratenko·D. Andrade Aldana·J. Asaadi·A. Ashkenazi·S. Balasubramanian·B. Baller·A. Barnard·G. Barr·D. Barrow·J. Barrow·V. Basque·J. Bateman·B. Behera·O. Benevides Rodrigues·S. Berkman·A. Bhat·M. Bhattacharya·V. Bhelande·A. Binau·M. Bishai·A. Blake·B. Bogart·T. Bolton·M. B. Brunetti·L. Camilleri·D. Caratelli·F. Cavanna·G. Cerati·A. Chappell·Y. Chen·J. M. Conrad·M. Convery·L. Cooper-Troendle·J. I. Crespo-Anadon·R. Cross·M. Del Tutto·S. R. Dennis·P. Detje·R. Diurba·Z. Djurcic·K. Duffy·S. Dytman·B. Eberly·P. Englezos·A. Ereditato·J. J. Evans·C. Fang·B. T. Fleming·W. Foreman·D. Franco·A. P. Furmanski·F. Gao·D. Garcia-Gamez·S. Gardiner·G. Ge·S. Gollapinni·E. Gramellini·P. Green·H. Greenlee·L. Gu·W. Gu·R. Guenette·L. Hagaman·M. D. Handley·O. Hen·A. Hergenhan·M. Harrison·S. Hawkins·C. Hilgenberg·G. A. Horton-Smith·A. Hussain·B. Irwin·M. S. Ismail·C. James·X. Ji·J. H. Jo·A. Johnson·R. A. Johnson·D. Kalra·G. Karagiorgi·W. Ketchum·A. Kelly·M. Kirby·T. Kobilarcik·K. Kumar·N. Lane·J. -Y. Li·Y. Li·K. Lin·B. R. Littlejohn·L. Liu·S. Liu·W. C. Louis·X. Luo·T. Mahmud·N. Majeed·C. Mariani·J. Marshall·D. A. Martinez Caicedo
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Abstract

We present the first double-differential cross-section measurements of muon neutrino charged-current interactions on argon with no mesons and one or more protons ($N_{p} \geq 1$) in the final state as a function of proton multiplicity and kinematics. The analysis uses the full Booster Neutrino Beam dataset collected by the MicroBooNE detector at Fermi National Accelerator Laboratory, corresponding to a total of $1.30 \times 10^{21}$ protons on target. We measure cross sections as a function of the proton multiplicity, the momenta and muon-proton opening angles of the leading and subleading protons up to and including the fourth-leading proton, as well as the total available kinetic energy of the hadronic system. The treatment of the statistical and systematic uncertainties includes correlations between the different extracted distributions. The measured cross sections are compared to predictions from several event generators using different primary and final-state interaction models. The results reveal strong sensitivity to the modeling of final-state interactions, and none of the generators tested provides a fully adequate description of the data. Significant disagreement between data and predictions is observed in the proton multiplicity distributions, particularly at backward opening angles and for subleading proton kinematics.

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MicroBooNE collaboration, P. Abratenko, D. Andrade Aldana, J. Asaadi, A. Ashkenazi, S. Balasubramanian, B. Baller, A. Barnard, G. Barr, D. Barrow, J. Barrow, V. Basque, J. Bateman, B. Behera, O. Benevides Rodrigues, S. Berkman, A. Bhat, M. Bhattacharya, V. Bhelande, A. Binau, M. Bishai, A. Blake, B. Bogart, T. Bolton, M. B. Brunetti, L. Camilleri, D. Caratelli, F. Cavanna, G. Cerati, A. Chappell, Y. Chen, J. M. Conrad, M. Convery, L. Cooper-Troendle, J. I. Crespo-Anadon, R. Cross, M. Del Tutto, S. R. Dennis, P. Detje, R. Diurba, Z. Djurcic, K. Duffy, S. Dytman, B. Eberly, P. Englezos, A. Ereditato, J. J. Evans, C. Fang, B. T. Fleming, W. Foreman, D. Franco, A. P. Furmanski, F. Gao, D. Garcia-Gamez, S. Gardiner, G. Ge, S. Gollapinni, E. Gramellini, P. Green, H. Greenlee, L. Gu, W. Gu, R. Guenette, L. Hagaman, M. D. Handley, O. Hen, A. Hergenhan, M. Harrison, S. Hawkins, C. Hilgenberg, G. A. Horton-Smith, A. Hussain, B. Irwin, M. S. Ismail, C. James, X. Ji, J. H. Jo, A. Johnson, R. A. Johnson, D. Kalra, G. Karagiorgi, W. Ketchum, A. Kelly, M. Kirby, T. Kobilarcik, K. Kumar, N. Lane, J. -Y. Li, Y. Li, K. Lin, B. R. Littlejohn, L. Liu, S. Liu, W. C. Louis, X. Luo, T. Mahmud, N. Majeed, C. Mariani, J. Marshall, D. A. Martinez Caicedo. 2026-09-30. First double-differential cross-section measurements in proton multiplicity and kinematics for mesonless $ν_μ$ charged-current interactions on argon using the MicroBooNE detector. https://arxiv.org/abs/2609.40237

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