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

ALEPH Collaboration, . and Heister, A. and Schael, S. and Barate, R. and Brunelière, R. and De Bonis, I. and Decamp, D. and Goy, C. and Jezequel, S. and Lees, J. -P. and Martin, F. and Merle, E. and Minard, M. -N. and Pietrzyk, B. and Trocmé, B. and Bravo, S. and Casado, M. P. and Chmeissani, M. and Crespo, J. M. and Fernandez, E. and Jones, Roger W. L. and Smizanska, Maria (2003) Exclusive production of pion and kaon meson pairs in two photon collisions at LEP. Physics Letters B, 569 (3-4). pp. 140-150. ISSN 0370-2693

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Abstract

Exclusive production of π 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 cosθ* and invariant mass, for |cosθ*|<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 normalization.

Item Type: Article
Journal or Publication Title: Physics Letters B
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Lancaster Environment Centre
Faculty of Science and Technology > Physics
ID Code: 10505
Deposited By: Mrs Yaling Zhang
Deposited On: 16 Jul 2008 14:21
Refereed?: Yes
Published?: Published
Last Modified: 17 Sep 2013 10:52
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/10505

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