284 research outputs found
Unified approach to hard diffraction
Using a combination of S-Matrix and perturbative QCD properties in the small
x_{Bj} regime, we propose a formulation of hard diffraction unifying the
partonic (Ingelman-Schlein) Pomeron, Soft Colour Interaction and QCD dipole
descriptions.Comment: 4 pages, 1 figure, to appear in Proceedings of 9th International
Workshop on Deep Inelastic Scattering and QCD (DIS 2001), Bologna, Italy, 27
Apr-1 May 200
Soft Physics and Intermittency: Open Question(s) in Krakow
This contribution contains a summary of the Krakow meeting on Soft Physics
and Fluctuations. It emphasizes both the experimental and the theoretical
investigations on correlations/fluctuations and intermittency in multi-particle
processes and discusses of the present status of this concept. A clarification
of the main open questions in this field of research is now within reach,
thanks to the studies presented at the meeting. Summary Talk of the Krakow
Workshop on Multiparticle Physics, May, 4-7, 1993. E-mail contact:
[email protected]: 12p., Plain Tex file, Saclay-T93/11
Testing resummed NLO-BFKL kernels
We propose a new method to test the (resummed) next-to-leading-order BFKL
evolution kernels using the Mellin transformed j-moments of the proton
structure function F_2.Comment: 12 pages,2 figures, To appear in the special issue of Acta Physica
Polonica to celebrate the 65th Birthday of Professor Jan Kwiecinsk
Diffractive Production of the Higgs Boson
Diffractive production of the Higgs boson at hadron colliders is discussed in
the light of the observed rate of hard diffractive dijet events at the
Tevatron. The Higgs predictions of models successful for dijets are compared.
LHC seems promising for a diffractive light Higgs boson and its mass
determination. Hard diffractive dijets, diphotons and dileptons at the Tevatron
(Run II) will be necessary to remove the remaining large uncertainties on
cross-sections and signals.Comment: 4 pages,3 figures,1 table; Talk presented at the XXXVIIIth Rencontres
de Moriond, QCD and High Energy Hadronic Interactions, Les Arcs, France,
March 22-29 200
Factorial correlators: angular scaling within QCD jets
Factorial correlators measure the amount of dynamical correlation in
multiplicity between two separated phase-space windows. We present the
analytical derivation of factorial correlators for a QCD jet described at the
double logarithmic (DL) accuracy. We obtain a new angular scaling property for
properly normalized correlators between two solid-angle cells or two rings
around the jet axis. Normalized QCD factorial correlators scale with the
angular distance and are independent of the window size. Scaling violations are
expected beyond DL approximation, in particular from the subjet structure.
Experimental tests are feasible, and thus welcome.Comment: preprint SACLAY-T00-182, TSL/ISV-00-0239; 18 pages, latex, 4 figures;
submitted to Eur. Phys. J.
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