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Cross section of hadron production in γγ collisions at LEP

✍ Scribed by H. Vogt

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
237 KB
Volume
79
Category
Article
ISSN
0920-5632

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✦ Synopsis

Cross sections of 7*7* collisions are presented and diffractive contributions axe studied. Interactions of quasi real and highly virtual photons axe considered. The Regge parameterization of Donnachie and Landshoff describes the cross section behavior of quasi real processes whereas BFKL Pomeron calculations axe not consistent with our data.

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Measurement of the inclusive D∗± product
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✍ J. Heß; A. Ngac 📂 Article 📅 2004 🏛 Elsevier Science 🌐 English ⚖ 648 KB

The inclusive production of D\*\* mesons in two-photon collisions is measured with the ALEPH detector at e+e-centre-of-mass energies from 183 GeV to 209 GeV. A total of 360 i 27 D\*' meson events are observed from an integrated luminosity of 699 pb-'. Cont$>tions from direct and single-resolved proc