Structures in Multiplicity Distributions and Oscillations of Moments

The possibility to relate multiplicity distributions and their moments, as measured in the hadronic final state in e(+)e(-) annihilation, to features of the initial partonic state is analyzed from a theoretical and phenomenological point of view. Recent developments on the subject are discussed.Comment: 13 pages, 3 figures (PS included); LaTeX 2e compatibility mode, uses epsfig and amstex. Available also via http://www.thep.lu.se/tf2/hep/article.hep.html . To be published in the Proceedings of XXVI Multiparticle Dynamics (Faro, Portugal, Sept 96

Forward-Backward Multiplicity Correlations in Symmetric and Asymmetric High Energy Collisions

Forward-backward correlations are explored within the two-component clan model of multiparticle production. It is found that existing data are well described, and, in hh collisions, that clans must be allowed to leak particles from one hemisphere to the other. General formulae given for the symmetric case are then extended to the asymmetric one, which is relevant for pA and AB collisions.Comment: 5 pages, no figures. Talk given at XXXII Int.l Symp. on Multiparticle Dynamics (Alushta, Crimea, Ukraine, Sept. 7-13, 2002

Power series distributions in clan structure analysis: new observables in strong interactions

We present a new thermodynamical approach to multiparticle production in high energy hadronic interactions, making use of the formalism of infinitely divisible power series distributions. This approach allows us to define new observables, linked to the system fugacity, which characterise different classes of events.Comment: 9 pages, 2 figures, talk presented by R. Ugoccioni at "Correlations and Fluctuations 2002", Crete, Greece, 8-15 June 200

Forward-backward multiplicity correlations in e+e- annihilation and pp collisions and the weighted superposition mechanism

Forward-backward multiplicity correlations in symmetric collisions are calculated independently of the detailed form of the corresponding multiplicity distribution. Applications of these calculations to e+e- annihilation and ppbar collisions confirm the existence of the weighted superposition mechanism of different classes of substructures or components. When applied to ppbar collisions in particular, clan concept and its particle leakage from one hemisphere to the opposite one become of fundamental importance. The increase with c.m. energy of the correlation strength as well as the behaviour of the average number of backward particles vs. the number of forward particles are correctly reproduced.Comment: 8 pages, 2 figures, talk presented by A. Giovannini at "Correlations and Fluctuations 2002", Crete, Greece, 8-15 June 200

Large Scale Structure and Cosmic Rays revisited

We investigate the possibility that ultra high energy cosmic rays (E > 10^19 eV) are related to the distribution of matter on large scales. The large scale structure (LSS) data stems from the recent IRAS PSCz redshift survey. We present preliminary predictions drawn from an anisotropic distribution of sources which follows the galaxy distribution.Comment: 6 pages, 2 figures, uses World Scientific style. To appear in the proceedings of "Third International Workshop on New Worlds in Astro-Particle Physics", 1-3 Set. 2000, Faro, Portugal and X ENAA, 27-28 Jul. 2000, Lisbon, Portuga