Energy and momentum distributions of hadrons produced in inelastic muon-proton scattering

We present inclusive distributions for final-state hadrons produced in inelastic muon-proton scattering. Over the total energy range $2<W<\mathrm{}4.7\mathrm{}$ GeV and the momentum-transfer range $0.3<\mathrm{}{Q}^2<4.5\mathrm{}$ Ge${\mathrm{V}}^2$, the fractional momentum and energy distributions approximately scale. Distributions in transverse momentum display an interesting two-component behavior. They show no dependence on the virtual-photon "mass squared" $Q^2$, and have average values typical of other hadron-initiated reactions. A comparison of our distributions with those seen in $e^{+}{e}^{-}$ annihilation and neutrino-nucleon scattering shows agreement, in support of quark-parton fragmentation ideas. We further break these distributions down by event topology.