Strange Baryon Production in e+ e- Annihilation - INSPIRE

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Strange Baryon Production in e+ e- Annihilation

TASSO

Collaboration

•

W. Braunschweig
(
- Aachen, Tech. Hochsch.
)

Nov, 1988

37 pages

Published in:

Z.Phys.C 45 (1989) 209

DOI:

10.1007/BF01674451

Report number:

DESY-88-173,
OUNP-89-3

Experiments:

DESY-PETRA-TASSO

reference search27 citations

Citations per year

Abstract: (Springer)

The production of strange baryons ine+e− annihilation has been studied at centre of mass energies of 34.8 GeV and 42.1 GeV, using the TASSO detector at DESY. Inclusive cross-sections have been obtained forΛ0 andΞ− production and an upper limit has been placed upon the production rate of Σ*±(1385). We measure theΛ0 multiplicity per event to be\begin{gathered}\hfill \\0.218_{ - 0.011}^{ + 0.011}\pm 0.021 \hfill \\ \end{gathered} and

0.256_{ - 0.029}^{ + 0.030}\pm 0.025

at

\sqrt s=34.8

and 42.1 GeV respectively. The Ξ− multiplicity per event is found to be

0.014_{ - 0.003}^{ + 0.003}\pm 0.004

at

\sqrt s=34.8 GeV

. An investigation has been made of the extent to whichΛ0 are produced in pairs. TheΛ0 cross-section has been studied as a function of event sphericity.

electron positron: colliding beams
electron positron: annihilation
electron positron: inclusive reaction
Lambda: electroproduction
Xi-: electroproduction
Sigma(1385): electroproduction
hyperon: multiplicity
Lambda: pair production
differential cross section: momentum dependence
differential cross section: transverse momentum

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