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Titles listMeasurements of the cross sections for open charm and beauty production in γγ collisions at √s=189–202 GeV
Titles listMeasurements of the cross sections for open charm and beauty production in γγ collisions at √s=189–202 GeV
Scientific Article
unige:44046 
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Measurements of the cross sections for open charm and beauty production in γγ collisions at √s=189–202 GeV |
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| Collaboration | With : Achard, Pablo / Ambrosi, Giovanni / Bourquin, Maurice / Braccini, Saverio / Chamizo Llatas, Maria / Deglon, Patrick / Delmeire, Evelyne / Extermann, Pierre / Field, John / Kienzle, Maria-Novella / Malgeri, Luca / Pohl, Martin | |
| Published in | Physics Letters. B. 2001, vol. 503, no. 1-2, p. 10-20 | |
| Abstract | The production of c and b quarks γγ collisions is studied with the L3 detector at LEP with 410 pb−1 of data, collected at centre-of-mass energies from 189 GeV to 202 GeV. Hadronic final states containing c and b quarks are identified by detecting electrons or muons from their semileptonic decays. The cross sections σ (e+e-→e+e-ccX) and σ (e+e-→e+e-bbX) are measured and compared to next-to-leading order perturbative QCD calculations. The cross section of b production is measured in γγ collisions for the first time. It is in excess of the QCD prediction by a factor of three | |
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Article (Published version) (428 Kb) - Free access Other version: http://www.sciencedirect.com/science/article/pii/S0370269301001344 |
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| Citation (ISO format) | L3 COLLABORATION. Measurements of the cross sections for open charm and beauty production in γγ collisions at √s=189–202 GeV. In: Physics Letters. B, 2001, vol. 503, n° 1-2, p. 10-20. doi: 10.1016/S0370-2693(01)00134-4 https://archive-ouverte.unige.ch/unige:44046 |
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