Multiplicities of secondary hadrons produced in vp and charged current interactions

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

“…[30] obtained in the resonance region (W 2 GeV) were not incorporated into the three latter analyses presented in Refs. [32][33][34]. Considering that the results of all four analyses of the WA21 data sample in the overlapping mid-W region agree with each other within (Color online) Mean multiplicities of charged hadrons in ν μ p (left panels) and ν μ p (right panels) CC interactions vs Q 2 for various W slices measured in the experiment WA21 with the hydrogen filled BEBC bubble chamber at CERN [33] (filled circles).…”

“…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).…”

“…[30] (CERN BEBC WA21, νp) are based on about two-thirds of the data published in Ref. [32] and the latter is in turn superseded by the final statistics of the WA21 experiment used in Refs. [33,34] Mean multiplicities of charged hadrons as a function of Q 2 for various W slices measured by the neutrinohydrogen experiment E45 at FNAL.…”

“…Five input parameters of PYTHIA 6.1 are adjusted for better agreement with the measured charged multiplicities from Refs. [27,37] (deuterium) and [32] (hydrogen).…”