Very high multiplicity hadron processes
نویسندگان
چکیده
منابع مشابه
Multiplicity Distribution and Mechanisms of the High-Energy Hadron Collisions
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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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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Oscillatory behavior of cumulant moments obtained from the experimental data in pp collisions and p̄p collisions are analyzed by the modified negative binomial distribution (MNBD) and the negative binomial distribution (NBD). Both distributions well describe the cumulant moments obtained from the data. This fact shows sharp contrast to the result in ee collisions, which is described by the the M...
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It is shown that QCD is able to predict very tiny features of multiplicity distributions at very high energies which demonstrate that the negative binomial distribution (and, more generally speaking, any infinitely divisible distribution) is inappropriate for precise description of experimental data. New precise fits of high energy multiplicity distributions can be derived. In this report, I br...
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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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ژورنال
عنوان ژورنال: Physics Reports
سال: 2001
ISSN: 0370-1573
DOI: 10.1016/s0370-1573(00)00102-2