Experimental study of hadrons produced in high-energy charged-current neutrino-proton interactions

Mean charged multiplicities in charged-current neutrino scattering on hydrogen and deuterium

“…Although this result partially supersedes the earlier data subset of FNAL E45 [22] at W > 2 GeV, the kinematic cuts used in Refs. [23] are at variance with our purposes. So we have to use the low-statistics data set from Ref.…”

“…The intercept value is not reported in Ref. [23]; our estimation yields a = 0.30 ± 0.51 TABLE I. Values of the intercept a and slope b obtained in different experiments on charged-current ν μ and ν μ scatterings on hydrogen and deuterium targets, by fitting the mean charged-hadron multiplicity n ch to the relation (1) within the W 2 ranges shown in the fourth column (W in GeV).…”

“…The mean charged-hadron multiplicity in the muon neutrino and antineutrino charged-current reactions on hydrogen and deuterium has been measured in the Fermilab experiments E31 [14][15][16][17][18][19][20], E45 [21][22][23][24], and E545 [25][26][27] with the 15 ft bubble chamber and in the CERN experiments WA21 [28][29][30][31][32][33][34] and WA25 [35][36][37][38][39] with the Big European Bubble Chamber (BEBC). The data obtained with the Fermi National Accelerator Laboratory (FNAL) and BNL hydrogen bubble chambers before 1976 are gathered in Ref.…”

“…Table I summarizes the results of Refs. [14][15][16][20][21][22][23][26][27][28][29][30][32][33][34][35][36][37], represented in terms of the intercept and slope coefficients a and b of Eq. (1).…”

“…The final result of the neutrino-hydrogen experiment FNAL E45 [23] (see also Ref. [24]) is based on a data sample reduced by the conditions 2 < W < 10 GeV and 2 < Q 2 < 64 GeV 2 and presented as a dependence of n ch on Q 2 for five narrow W bins located above the region of low-lying baryon resonances in exclusive channels.…”