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Exclusive π+π−π+π− and π+π0π−π0 production in two photon collisions at L3

✍ Scribed by O. Fedin; S. Nesterov; G. Sultanov; I. Vorobiev

Publisher
Elsevier Science
Year
2004
Tongue
English
Weight
465 KB
Volume
126
Category
Article
ISSN
0920-5632

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✦ Synopsis

Exclusive pop0 and p+pproduction in two-photon collisions for quasi-real photons and pop0 production, involving highly virtual photons, was measured by the L3 experiment at LEP. The spin-parity-helicity analysis of pop0 and p+psystems at Q2 M 0 was performed.

A dominance of J p = 2' and helicity 2 is observed. The cross sections of the process yy* + p * p * for 1.2 < Q2 < 30 GeV' and for 1.1 < W,, < 3.0 GeV are determined as a function of photon virtuality Q2 and as a function of the two-photon center-of-mass energy W,,.

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