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

(2003) Physics Letters B — Vol. 569, n° 3-4, p. 140-150 (2003)

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Abstract
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.
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Delaere, C., Lemaitre, V., & et al. (2003). Exclusive production of pion and kaon meson pairs in two photon collisions at LEP. Physics Letters B, 569(3-4), 140-150. https://doi.org/10.1016/j.physletb.2003.07.031 (Original work published 2003)