Multiplicities of charged pions and kaons from semi-inclusive deep-inelastic scattering by the proton and the deuteron

TL;DR

This paper reports detailed measurements of charged pion and kaon multiplicities in semi-inclusive deep-inelastic scattering, providing valuable data to improve understanding of quark fragmentation processes.

Contribution

It presents a comprehensive data set of identified hadron multiplicities as functions of multiple kinematic variables, enhancing insights into quark fragmentation in DIS.

Findings

Provides multiplicity data for nd K^\u00b1 mesons

Data covers a wide range of x_B, Q^2, z, and P_hrr

Enhances understanding of quark fragmentation mechanisms

Abstract

Multiplicities in semi-inclusive deep-inelastic scattering are presented for each charge state of \pi^\pm and K^\pm mesons. The data were collected by the HERMES experiment at the HERA storage ring using 27.6 GeV electron and positron beams incident on a hydrogen or deuterium gas target. The results are presented as a function of the kinematic quantities x_B, Q^2, z, and P_h\perp. They represent a unique data set for identified hadrons that will significantly enhance our understanding of the fragmentation of quarks into final-state hadrons in deep-inelastic scattering.