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

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Delaere, Christophe [UCL] Lemaitre, Vincent [UCL]

Exclusive production of pi 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 theta* and invariant mass, for cos theta* < 0.6 and invariant masses between 2.0 and 6.0 GeV/c(2) (2.25 and 4.0 GeV/c(2)) for pions (kaons). The shape of the distributions are found to be well described by QCD predictions but the data have a significantly higher normalization. (C) 2003 Published by Elsevier B.V.

Document type Article de périodique (Journal article) – Article de recherche
Access type Accès restreint
Publication date 2003
Language Anglais
Journal information "Physics Letters B" - Vol. 569, no. 3-4, p. 140-150 (2003)
Peer reviewed yes
Publisher ELSEVIER SCIENCE BV (AMSTERDAM, NETHERLANDS )
issn 0370-2693
Publication status Publié
Affiliation UCL - SST/IRMP - Institut de recherche en mathématique et physique
Keywords 1221
Links
Bibliographic reference Delaere, Christophe ; Lemaitre, Vincent ; et. al. Exclusive production of pion and kaon meson pairs in two photon collisions at LEP . In: Physics Letters B, Vol. 569, no. 3-4, p. 140-150 (2003)
Permanent URL http://hdl.handle.net/2078.1/71943