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
Full text not available from this repository.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.