Inclusive π 0 and KS 0 production in two-photon collisions at LEP

Inclusive Direct - Photon and Π 0 Production in Proton – Nucleon Collisions

Hadron production in two-photon collisions at LEP-L3∗

The reaction ee → eeγγ → ee hadrons is analysed for quasi-real virtual photons using data collected by the L3 detector during the LEP high energy runs at √ s = 183 and 189 GeV. Preliminary results on the cross sections σ(ee → ee hadrons) and σ(γγ → hadrons) are given in the interval 5 GeV ≤ Wγγ ≤ 145 GeV. The centre-of-mass energy dependence of the two-photon cross section is well described by ...

Jet production in two-photon collisions at LEP

Jet and di-jet production are studied in collisions of quasi-real photons collected during the LEP2 program at ee center-of-mass energies from 189 to 209GeV. OPAL reports good agreement of NLO perturbative QCD with the measured differential di-jet cross sections, which reach a mean transverse energy of the di-jet system of 25GeV. L3, on the other hand, finds drastic disagreement of the same cal...

Inclusive 0 , , and direct photon production at high transverse momentum in p + p and d + Au collisions at sNN = 200

Citation Abelev, B. et al. " Inclusive ^{0}, , and direct photon production at high transverse momentum in p+p and d+Au collisions at sqrt[s_{NN}]=200 GeV. " Physical Review C 81.6 (2010): n. pag. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article...

Double Tag Events in Two-photon Collisions at Lep

Double tag events in two photon collisions are studied using the L3 detector at the LEP center of mass energies √ s ≃ 189 − 202 GeV. The cross-section of γ * γ * collisions is measured at an average photon virtuality Q 2 = 15 GeV 2. The results are in agreement with Monte Carlo predictions based on perturbative QCD, while the Quark Parton Model alone is insufficient to describe the data. The me...