Measurement of multiplicity and momentum spectra in the current and target regions of the Breit frame in deep inelastic scattering at HERA - INSPIRE

DataBETA

Measurement of multiplicity and momentum spectra in the current and target regions of the Breit frame in deep inelastic scattering at HERA

ZEUS

Collaboration

Mar, 1999

40 pages

Published in:

Eur.Phys.J.C 11 (1999) 251-270

e-Print:

hep-ex/9903056 [hep-ex]

DOI:

10.1007/s100520050630

Report number:

DESY-99-041

Experiments:

DESY-HERA-ZEUS

View in:

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Abstract:

Charged particle production in neutral current deep inelastic scattering (DIS) has been studied using the ZEUS detector.The evolution of the mean multiplicities, scaled momenta and transverse momenta in

Q^2

and

x

for

10 < Q^2 < 5120 GeV^2

and

x > 6\times 10^{-4}

has been investigated in the current and target fragmentation regions of the Breit frame. Distributions in the target region, using HERA data for the first time, are compared to distributions in the current region. Predictions based on MLLA and LPHD are inconsistent with the data.

Note:

Few clarifications added to text for referee. Updated figure 16 Report-no: DESY-99-041

positron p: colliding beams
positron p: deep inelastic scattering
hadron: multiple production
kinematics: Breit frame
target: fragmentation
current: fragmentation
charged particle: multiplicity
momentum spectrum
transverse momentum: spectrum
momentum transfer dependence

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Figures(17)

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