Balance of Transverse Momentum of Hadrons Produced in Deep Inelastic Muon Proton Scattering

Abstract Data are presented on the balance of transverse momenta of final state charged hadrons in 280 GeV muon-proton scattering. In particular the way in which the transverse momentum of either leading particles ( z > 0.5) f high p T particles ( p T 2 > 2 GeV 2 ) is compensated by further hadrons in the forward hemisphere is studied. The results are consistent with a QCD based model. The agreement is achieved by including in the model the emission of soft gluons and assuming that the partons have a distribution of primordial transverse momentum with 〈k T 2 〉 ⋍ 0.2 GeV 2 , a value considerably less then found in previous analyses.