Comparison ofνnandνpCharged-Current Cross Sections from High-Energy Neutrino Interactions in Deuterium

Abstract

From an analysis of the reaction v^ + d-+\x + X f obtained from an exposure of the Fermilab 15-ft deuterium-filled bubble chamber, the ratios of charged-current cross sections for E v > 10 GeV are determined to be v(vn)/v(vp) = 2.03± 0.28 for <JE V ) = 50 GeV, and a(pn)/o-(Pp) = 0.51 ±0.16 for (E^) = 40 GeV. Bjorken-* distributions for neutron and proton targets show that the majority quark in the nucleon has a broader momentum distribution in the infinite momentum frame than does the minority quark.

Measurement of the ratio of total and differential cross sections on neutrons and protons for charged-current neutrino events

“…show the same tendency, but the comparison with this resuit is not very meaningful since the errors given in réf. [2] for i? as a function of x are only statistical.…”

“…CTp, provides information on the u-and d-quark fractional momentum distributions inside the proton. This ratio has been measured in deuterium and heavy nuclei [1,2] The experiment was carried out at CERN using the wide-band neutrino beam from the SPS at a primary proton energy of 350 GeV. A total of 280 000 neutrino and 270 000 antineutrino pictures were taken.…”

Hadronization Model Tuning in GENIE v3

“…For instance, in BEBC experiment, the muon ID efficiency varies from 40% to 100% in the muon momentum range of 3 GeV/c ≤ p µ ≤ 10 GeV/c, with an average efficiency of 95%. The FNAL 15 ft experiment also uses a kinematic technique to identify negative muons in neutrino interactions [63]. Under this µ − -ID method, only events in which the µ − candidate has transverse momentum, p µ ⊥ , of at least 1 GeV/c are accepted.…”

“…The deuterium target can induce rescattering of the hit nucleon with the spectator: this can increase the number of hadrons in the final state [63]. An odd number of prongs can occur in any possible neutrino interaction because of rescattering, independently of the hit nucleons, so the ν µ p sample will contain ν µ n events.…”