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Study of vector-meson production in /ital e//sup +/e/sup /minus// annihilation at /radical//ital s/ =29 GeV

Journal Article · · Phys. Rev. D; (United States)
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This paper reports cross-section measurements for the /rho//sup 0/ and /ital K//sup */(890) vector mesons produced in /ital e//sup +/e/sup /minus// annihilation at /radical//ital s/ =29 GeV. The data, which were taken with the High Resolution Spectrometer operating at the SLAC colliding-beam facility PEP,correspond to an integrated luminosity of 291 pb/sup /minus/1/. The measured multiplicities for fractional momentum /ital x//gt/0.05 are /ital N//sub /rho//sup 0//=0.79/plus minus/0.04 and /ital N//sub /ital K//sup *0/(890)/=0.53/plus minus/0.04. The measured fragmentation functions agree well with the predictions of the Lund model and when extrapolated to threshold, the corresponding total multiplicities are /ital N//sub /rho//sup 0//=0.90/plus minus/0.05 and /ital N//sub /ital K//sup *0/(890)/=0.59/plus minus/0.05.
Research Organization:
Argonne National Laboratory, Argonne, Illinois 60439 (US); Indiana University, Bloomington, Indiana 47405; University of Michigan, Ann Arbor, Michigan 48109
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
5891063
Journal Information:
Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 40:3; ISSN PRVDA
Country of Publication:
United States
Language:
English

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Related Subjects

645102* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BASIC INTERACTIONS
BOSONS
ELECTROMAGNETIC INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
FIELD THEORIES
FRAGMENTATION
GEV RANGE
GEV RANGE 10-100
HADRONS
INTERACTIONS
K -892 MESONS
LEPTON-LEPTON INTERACTIONS
MESONS
MULTIPLICITY
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PEP STORAGE RINGS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
STORAGE RINGS
STRANGE MESONS
STRANGE PARTICLES
TIME-OF-FLIGHT METHOD
VECTOR MESONS