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Exclusive production of pion and kaon meson pairs in two photon collisions at LEP

✍ Scribed by A. Finch

Publisher: Elsevier Science
Year: 2004
Tongue: English
Weight: 557 KB
Volume: 126
Category: Article
ISSN: 0920-5632
DOI: 10.1016/s0920-5632(03)02346-6

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✦ Synopsis

Exclusive production

of n and K meson pairs in two photon collisions is measured with ALEPH data collected between 1992 and 2000. Cross sections are presented as a function of cos 0* and invariant mass, for ( cos 8" [ < 0.6 and invariant masses between 2.0 and 6.0 GeV/c2 (2.25 and 4.0 GeV/c2) for pions (kaons).

The shape of the distributions are found to be well described by QCD predictions but the data have a significantly higher normalisation.

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