Reaction and total cross sections for low energyπ+andπ−

Abstract

Reaction and total cross sections for ϩ and Ϫ on targets of 2 H, 6 Li, C, Al, Si, S, and Ca have been measured for beam energies from 42 to 65 MeV. The cross sections are proportional to the target mass at 50 MeV, consistent with transparency to these projectiles. The cross sections are compared to theoretical calculations.PACS number͑s͒: 25.80.Ls TR ϭ R ϩ EL ϩ C ϩ NCI , ͑3͒

Measurement of muon plus proton final states inνμinteractions on hydrocarbon at⟨Eν⟩=

“…The uncertainties on the neutrino interaction and FSI models affect dσ/dQ 2 QE,p through the efficiency correction and are dominated by uncertainties on the resonance production axial mass parameter, pion absorption, and pion inelastic scattering. The uncertainties associated with hadron propagation through MINERvA are evaluated by shifting the pion and proton total inelastic cross sections by 10%, an uncertainty derived from external hadron production data [42][43][44][45]. This uncertainty affects proton tracking and PID efficiencies and acceptance for Q 2 QE,p > 0.8 GeV 2 .…”

Charged pion production inνμinteractions on hydrocarbon at⟨Eν⟩=4.0 Eberly1, Aliaga2, Altinok3 et al. 2015Phys. Rev. D911910View full textAdd to dashboardCite

“…[30]. The uncertainties on the hadron interaction models in GEANT4 are determined to be ∼10% by external data [36][37][38][39]. The tracking efficiency and energy response of single hadrons, as well as the scintillation Birks constant, are determined from measurements made with a scaled-down replica of the MINERvA detector in a low energy hadron test beam [40].…”

Measurement ofσABSandσCXofπ+on carbon by the Dual Use Experiment at TRIUMF (DUET)

“…Layers of 0.25 mm thick fiberglass (G10) were glued to both the upstream and downstream surfaces to provide support, and no adhesive was applied between the bars. Each module had dimensions of 32×32×2.02 cm 3 . Unlike the FGDs, 0.8∼1 mm thick lead layers were interspersed in between each module to enhance photon conversion.…”

“…1. The total, elastic and quasi-elastic processes have been measured with < 10% precision by various experiments [1][2][3][4][5][6][7][8][9][10][11], however data are scarce for inelastic processes such as absorption (ABS: π ± + A → (A − N ) + N ) and single charge exchange (CX: π ± +A → π 0 +(A−N )+N ), where "N" represents any number of nucleons leaving the nucleus. Moreover, the majority of past experiments measured the combined rate of these two processes [12,13], and relied on other experimental results or on theoretical calculations to separate their individual contribution while ignoring possible correlations and systematic uncertainties.…”