Hadron multiplicity as the limit of jet multiplicity at high resolution
نویسندگان
چکیده
منابع مشابه
Hadron Multiplicity as the Limit of Jet Multiplicity at High Resolution *
Recently exact numerical results from the evolution equation for parton multiplicities in QCD jets have been obtained. A comparison with various approximate results is presented. A good description is obtained not only of the jet multiplicities measured at LEP-1 but also of the hadron multiplicities for cms energies above 1.6 GeV in eeannihilation. The solution suggests that a final state hadro...
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Recently, the moments of multiplicity distributions in ee annihilation and the ratios Hq (cumulant over factorial moments Kq/Fq) have been determined both for the hadronic final state and for jets at variable resolution. These ratios show an oscillatory behaviour as function of q with strong dependence of the amplitude and length of oscillation on the jet resolution parameter ycut. The recent e...
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Ratios of multiplicity moments, Hq (cumulant over factorial moments Kq/Fq), have been observed to show an oscillatory behaviour with respect to order, q. Recent studies of e+e− annihilations at LEP have shown, moreover, that the amplitude and oscillation length vary strongly with the jet resolution parameter ycut. We study the predictions of the perturbative QCD parton cascade assuming low nonp...
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We describe recent applications of the MLLA evolution equations to the calculation of mean multiplicities in quark and gluon jets and the higher moments of hadron and sub-jet multiplicity distributions in e + e −-annihilation as function of c.m.s. energy Q and resolution parameter ycut. The transition from jets to hadrons with increasing jet resolution is considered.
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We discuss the multiplicity distribution for highest accessible energies of ppand p̄pinteractions from the point of view of the multiparton collisions. The inelastic cross sections for the single, σ1, and multiple (double and, presumably, triple, σ2+3) parton collisions are extracted from the analysis of the experimental data on the multiplicity distribution up to the Tevatron energies. It follo...
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 1998
ISSN: 0920-5632
DOI: 10.1016/s0920-5632(97)01039-6