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arxiv: 2606.13613 · v1 · pith:NOSR4N2Snew · submitted 2026-06-11 · ✦ hep-ex

First Measurement of Sub-GeV ν_(μ) Charged-Current Coherent Pion Production on Argon in MicroBooNE

MicroBooNE collaboration: P. Abratenko , D. Andrade Aldana , J. Asaadi , A. Ashkenazi , S. Balasubramanian , B. Baller , A. Barnard , G. Barr
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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 F. Martinez Lopez M. G. Manuel Alves S. Martynenko A. Mastbaum I. Mawby N. McConkey B. McConnell L. Mellet J. Mendez J. Micallef T. Mohayai A. Mogan M. Mooney A.F. Moor C.D. Moore L. Mora Lepin M. A. Hernandez Morquecho M.M. Moudgalya S. Mulleria Babu D. Naples A. Navrer-Agasson N. Nayak M. Nebot-Guinot C. Nguyen L. Nguyen J. Nowak N. Oza O. Palamara N. Pallat V. Paolone A. Papadopoulou V. Papavassiliou H. Parkinson S.F. Pate N. Patel Z. Pavlovic E. Piasetzky K. Pletcher I. Pophale X. Qian J.L. Raaf V. Radeka A. Rafique M. Reggiani-Guzzo J. Rodriguez Rondon M. Rosenberg M. Ross-Lonergan I. Safa C. Sauer D.W. Schmitz A. Schukraft W. Seligman M.H. Shaevitz R. Sharankova J. Shi L. Silva E.L. Snider S. Soldner-Rembold J. Spitz M. Stancari J. St. John T. Strauss A.M. Szelc N. Taniuchi K. Terao C.Thorpe D. Torbunov D. Totani M. Toups A. Trettin Y.-T. Tsai J. Tyler M.A. Uchida T. Usher B. Viren J. Wang L. Wang M. Weber H. Wei A.J. White S. Wolbers T. Wongjirad K. Wresilo W. Wu E. Yandel T. Yang L.E. Yates H.W. Yu G.P. Zeller J. Zennamo C. Zhang Y. Zhang
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classification ✦ hep-ex
keywords neutrinoargonmeasurementpiontextcharged-currentcoherentmicroboone
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We report a measurement of the charged-current coherent pion production cross section on argon using the MicroBooNE liquid argon time projection chamber exposed to the Booster Neutrino Beam at Fermilab. The measurement uses the MicroBooNE data set corresponding to $1.26 \times 10^{21}$ protons on target with a mean neutrino energy of $0.8$~GeV. The flux-averaged cross section is measured to be $(9.1 \pm 1.2_{\text{stat}} \pm 1.2_\text{syst}) \times 10^{-40}\,\text{cm}^2/\text{Ar}$. This result represents the first measurement of charged-current coherent pion production on argon at sub-GeV neutrino energies. Due to its clean two-body kinematics, where the neutrino interacts coherently with the entire nucleus producing a forward muon and pion with no nuclear breakup, this process provides a useful tool for constraining neutrino flux uncertainties in current and future oscillation experiments such as DUNE.

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