2000/10/12 by Pablo Achard, Achard, Pablo
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #hep-ex
paper · pdf · doi:10.48550/arxiv.hep-ex/0010024
7 pages, to appear in the proceedings of PHOTON'2000 (Ambleside, England)
arxiv created 2000/10/12 · arxiv updated 2009/11/30
The ee -> ee+pi0+X and ee -> ee+K0s+X reactions are studied at LEP using data collected with the L3 detector at sqrts=189-202 GeV. Preliminary results for the differential cross section dsigma/dpt in the transverse momentum range 0.2 GeV < pt < 7.5 GeV at central values of pseudo-rapidity, |eta| < 0.5 or |eta| < 1.5, and the differential cross section dsigma/d|eta| for different values of pt are presented. For pt le 1 GeV, the pt -dependence of the data are well described by an exponential fit. For pt > 1 GeV the cross sections are compared to NLO QCD calculations and to LO Monte Carlo predictions.