Charged hadron multiplicities at the HERMES experiment

• Published in: Physics of particles and nuclei Vol. 45; no. 1; pp. 85 - 87
• Main Author: Karyan, G.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01-01-2014
• Subjects: DEEP INELASTIC SCATTERING; DEUTERIUM TARGET; FOUR MOMENTUM TRANSFER; KAONS; MULTIPLICITY; Particle and Nuclear Physics; Physics; Physics and Astronomy; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; PIONS; POSITRON BEAMS; Session 2. Spin in Hadronic Reactions; TRANSVERSE MOMENTUM; HERMES Collaboration; Positron Beam; Spin Asymmetry; Transverse Momentum; Deep Inelastic Scattered
• ISSN: 1063-7796; 1531-8559
• DOI: 10.1134/S1063779614010468

The HERMES collaboration has measured charge-separated pion and kaon multiplicities in semi-inclusive deep inelastic scattering using a 27.6 GeV electron or positron beam scattering off a hydrogen or deuterium target. The results are presented as a function of the Bjorken variable
x
B
, the negative squared four-momentum transfer
Q
2
, the hadron fractional energy
z
and it’s transverse momentum
P
h
⊥
. These data will be very useful to understand the quark-fragmentation process in deep-inelastic hadron electro-production and will serve as crucial input in the understanding of spin asymmetries in polarized semi-inclusive deep-inelastic scattering.