Hadron Formation in DIS in a nuclear environment

Abstract

The influence of the nuclear medium on the production of charged hadrons in semi-inclusive deep inelastic scattering has been studied by the HERMES experiment at DESY using 27.5 GeV positrons. A substantial reduction of the multiplicity of charged hadrons and identified charged pions from nuclei relative to that from deuterium has been measured as function of the relevant kinematic variables. The preliminary results on krypton show a larger reduction of the multiplicity ratio $R_M^h$ with respect to the one previously measured on nitrogen and suggest a possible modification of the quark fragmentation process in the nuclear environment.

5 pages, 5 figures, Proceeding of DIS 2001, IX International Workshop on Deep Inelastic Scattering Bologna, 27 April-1 May 2001

References in corpus (4)

• Suppression of Hadrons with Large Transverse Momentum in Central Au+Au Collisions at $sqrt {s sub {sub {NN}}}_ = 130 GeV
• Multiple Parton Scattering in Nuclei: Parton Energy Loss
• Hadron Formation in Deep-Inelastic Positron Scattering in a Nuclear Environment
• Transverse mass distributions of neutral pions from ${}^{208}$Pb-induced reactions at 158$\cdot A$ GeV

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• Multiple Parton Scattering in Nuclei: Twist-Four Nuclear Matrix Elements and Off-Forward Parton Distributions
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• Parton Energy Loss and Modified Beam Quark Distribution Functions in Drell-Yan Process in p+A Collisions