102 research outputs found
Soft interaction model and the LHC data
Most models for soft interactions which were proposed prior to the
measurements at the LHC, are only marginally compatible with LHC data, our GLM
model has the same deficiency. In this paper we investigate possible causes of
the problem, by considering separate fits to the high energy (),
and low energy () data. Our new results are moderately higher
than our previous predictions. Our results for total and elastic cross sections
are systematically lower that the recent Totem and Alice published values,
while our results for the inelastic and forward slope agree with the data. If
with additional experimental data, the errors are reduced, while the central
cross section values remain unchanged, we will need to reconsider the physics
on which our model is built.Comment: 12 pp, 12 figures in .eps file
Diffractive dissociation including pomeron loops in zero transverse dimensions
We have recently studied the QCD pomeron loop evolution equations in zero
transverse dimensions [Shoshi:2005pf]. Using the techniques developed in
[Shoshi:2005pf] together with the AGK cutting rules, we present a calculation
of single, double and central diffractive cross sections (for large diffractive
masses and large rapidity gaps) in zero transverse dimensions in which all
dominant pomeron loop graphs are consistently summed. We find that the
diffractive cross sections unitarise at asymptotic energies and that they are
suppressed by powers of alpha_s. Our calculation is expected to expose some of
the diffractive physics in hadron-hadron collisions at high energy.Comment: 14 pages, 5 figures; numerous explanations added, matches the
published versio
Gluon recombination in high parton density QCD: inclusive pion production
We argue that the collinear factorization of the fragmentation functions in
high energy hadron and nuclei collisions breaks down at transverse momenta kT <
Qs/g due to high parton densities in the colliding hadrons and/or nuclei. We
calculate, at next-to-leading order in projectile parton density and to all
orders in target parton density, the double-inclusive cross section for
production of a pair of gluons in the scalar J^(PC)=0^(++) channel. Using the
low energy theorems of QCD we find the inclusive cross section for pi-meson
production.Comment: 24 pages, 5 figure
Gluon multiplicity in coherent diffraction of onium on a heavy nucleus
We derive the cross section for the diffractive gluon production in high
energy onium-nucleus collisions that includes the low-x evolution effects in
the rapidity interval between the onium and the produced gluon and in the
rapidity interval between the gluon and the target nucleus. We analyze our
result in two limiting cases: when the onium size is much smaller than the
saturation scale and when its size is much larger than the saturation scale. In
the later case the gluon multiplicity is very small in the quasi-classical case
and increases when the low-x evolution effects in onium become significant. We
discuss the implications of our result for the RHIC, LHC and EIC phenomenology.Comment: 21 pages, 5 figure
Two-scale hadronic structure and elastic pp scattering: predicted and measured
We update the comparison with experiment of the dynamical model of
high-energy hadron interactions based on the two scale structure of hadrons.
All predictions made over decade ago are confirmed with a high precision by the
TOTEM experiment at LHC.Comment: 6 pages, 6 figure
The Sheinbein Case and the Israeli-American Extradition Experience: A Need for Compromise
This Article will examine the political ramifications of the extradition process and the need for compromise to prevent domestic politics from undermining the ends of law enforcement. This Article will also suggest possible measures to ease the complications that extradition poses to international law enforcement cooperation. Part II of this Article will examine the facts of the most recent and dramatic example of the politics of extradition as played out in the Sheinbein case. Part III will analyze other issues which have placed obstacles in the path of practical law enforcement and international relations, and the way that the United States has reacted to each issue. Special emphasis will be placed on U.S.-Israeli extradition problems. Finally, Part IV will discuss compromises which might be made by the United States and other nations such as Israel to ease the extradition process, particularly in cases involving a national of the asylum state, without sacrificing national sovereignty
Study of Nuclear Suppression at Large Forward Rapidities in d-Au Collisions at Relativistic and Ultrarelativistic Energies
We study a strong suppression of the relative production rate (d-Au)/(p-p)
for inclusive high-pT hadrons of different species at large forward rapidities
(large Feynman xF). The model predictions calculated in the light-cone dipole
approach are in a good agreement with the recent measurements by the BRAHMS and
STAR Collaborations at the BNL Relativistic Heavy Ion Collider. We predict a
similar suppression at large pT and large xF also at lower energies, where no
effect of coherence is possible. It allows to exclude the saturation models or
the models based on Color Glass Condensate from interpretation of nuclear
effects.Comment: Revised version (6 pages, 4 figures) to appear in Physical Review
The Post-Sheinbein Israeli Extradition Law
In this Article, the Authors examine Israel\u27s stance on extradition. In Part II, the Article offers an historical timeline of the development of Israel\u27s extradition policies, from common law to reciprocity. In Part III, the Article examines Israel\u27s initial attempts to address the problems inherent in its operating extradition policy. This section also includes an analysis of the reform movement\u27s effect on specific cases. In Part IV, the Article examines the most recent reform of Israel\u27s extradition policy
Inclusive Gluon Production In High Energy Onium-Onium Scattering
We calculate the inclusive single-gluon production cross section in high
energy onium-onium scattering including pomeron loop effects. The resulting
inclusive cross section is given by the k_T-factorization formula with one of
the unintegrated gluon distribution functions depending on the total
onium-onium scattering cross section, which includes all pomeron loops and has
to be found independently. We discuss the limits of applicability of our result
and argue that they are given by the limits of applicability of pomeron loop
resummation approach. Since the obtained k_T-factorization formula is infrared
divergent we conclude that, in order to consistently calculate the
(infrared-finite) gluon production cross section in onium-onium scattering, one
has to include corrections going beyond the pomeron loop approximation.Comment: 20 pages, 6 figures; v2: version accepted to Phys. Rev. D, minor
corrections include
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