$\Lambda$ and $\Sigma^0$ pair production in two photon collisions at LEP - INSPIRE

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$\Lambda$ and $\Sigma^0$ pair production in two photon collisions at LEP

L3

Collaboration

Feb, 2002

15 pages

Published in:

Phys.Lett.B 536 (2002) 24-33

e-Print:

hep-ex/0204025 [hep-ex]

DOI:

10.1016/S0370-2693(02)01781-1

Report number:

CERN-EP-2002-013

Experiments:

CERN-LEP-L3

View in:

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Abstract: (Elsevier)

Strange baryon pair production in two-photon collisions is studied with the L3 detector at LEP. The analysis is based on data collected at e + e − centre-of-mass energies from 91 GeV to 208 GeV, corresponding to an integrated luminosity of 844 pb −1 . The processes γγ→Λ Λ ̄ and γγ→Σ 0 Σ 0 are identified. Their cross sections as a function of the γγ centre-of-mass energy are measured and results are compared to predictions of the quark–diquark model.

electron positron: colliding beams
exchange: two-photon
photon photon: interaction
hyperon: pair production
Lambda: hadronic decay
Sigma0: radiative decay
channel cross section: energy dependence
quark: diquark
L3
experimental results

References(24)

Figures(11)

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