Simultaneous Measurement of Muon Neutrino ν μ Charged-Current Single π + Production in CH, C, Physical Review Letters (2023)
A. BercellieK. A. Kroma-WileyS. AkhterZ. Ahmad DarF. AkbarV. AnsariM. V. AscencioM. Sajjad AtharL. BellantoniM. BetancourtA. BodekJ. L. BonillaA. BravarH. S. BuddG. CáceresT. CaiG. A. DíazH. da MottaS. A. DytmanJ. FélixL. FieldsA. FilkinsR. FineA. M. GagoH. GallagherP. K. GaurA. GhoshS. M. GilliganR. GranE. GranadosD. A. HarrisC. JenaS. JenaJ. KleykampA. KlustováM. KordoskyD. LastT. LeAna LozanoX.-G. LuI. MahbubE. MaherS. ManlyW. A. MannC. MaugerK. S. McFarlandB. MesserlyJ. MillerO. MorenoJ. G. MorfínD. NaplesJ. K. NelsonC. NguyenA. OlivierV. PaoloneG. N. PerdueKomninos-John PlowsM. A. RamírezR. D. RansomeH. RayD. RuterboriesH. SchellmanC. J. Solano SalinasHang SuM. SultanaV. S. SyrotenkoB. UttE. ValenciaN. H. VaughanA. V. WaldronB. YaeggyL. Zazueta
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Neutrino-induced charged-current single ${\ensuremath{\pi}}^{+}$ production in the $\mathrm{\ensuremath{\Delta}}(1232)$ resonance region is of considerable interest to accelerator-based neutrino oscillation experiments. In this Letter, high statistic differential cross sections are reported for the semiexclusive reaction ${\ensuremath{\nu}}_{\ensuremath{\mu}}A\ensuremath{\rightarrow}{\ensuremath{\mu}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}+$ nucleon(s) on scintillator, carbon, water, iron, and lead targets recorded by MINERvA using a wideband ${\ensuremath{\nu}}_{\ensuremath{\mu}}$ beam with $⟨{E}_{\ensuremath{\nu}}⟩\ensuremath{\approx}6\text{ }\text{ }\mathrm{GeV}$. Suppression of the cross section at low ${Q}^{2}$ and enhancement of low ${T}_{\ensuremath{\pi}}$ are observed in both light and heavy nuclear targets compared with phenomenological models used in current neutrino interaction generators. The cross sections per nucleon for iron and lead compared with CH across the kinematic variables probed are 0.8 and 0.5 respectively, a scaling which is also not predicted by current generators.The differential energy distribution for electrons and taus produced from lepton pair production from muons in transit through materials is numerically evaluated. We use the differential cross section to calculate underground lepton fluxes from an incident atmospheric muon flux, considering contributions from both conventional and prompt fluxes. An approximate form for the charged current differential neutrino cross section is provided and used to calculate single lepton production from atmospheric neutrinos. We compare the fluxes of underground leptons produced from incident muons with those produced from incident neutrinos and photons from muon bremsstrahlung. We discuss their relevance for underground detectors.
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