2,257 research outputs found
Can the "standard" unitarized Regge models describe the TOTEM data?
The standard Regge poles are considered as inputs for two unitarization
methods: eikonal and U-matrix. It is shown that only models with three input
pomerons and two input odderons can describe the high energy data on and
elastic scattering including the new data from Tevatron and LHC.
However, it seems that the both considered models (eikonal and U-matrix)
require a further modification (e.g., to explore nonlinear reggeon trajectories
and/or nonexponential vertex functions) for a more satisfactory description of
the data at 19.0 GeV 7 TeV and 0.01 14.2
GeV.Comment: 11 pages, 7 figures, typos are corrected, minor corrections in the
text, No changes in results and conclusion. To appear in EP
Elastic Meson-Nucleon and Nucleon-Nucleon Scattering: Models vs. All Available Data
We consider simple-pole descriptions of soft elastic scattering at small
and , and allow for the presence of a hard pomeron. We have built and
analyzed an exhaustive dataset and we show that simple poles provide an
excellent description of the data in the region GeV
GeV, 6 GeV63 GeV. We show that new form factors have to be
used, and get information on the trajectories of the soft and hard pomerons.Comment: Contribution to the proceedings of the XIth International Conference
on Elastic and Diffractive Scattering, Chateau de Blois, France, May 15 - 20,
2005. Needs Blois.sty (provided
Chiral color symmetry and possible -boson effects at the Tevatron and LHC
A gauge model with chiral color symmetry is considered and possible effects
of the color -boson octet predicted by this symmetry are investigated in
dependence on two free parameters, the mixing angle and mass
. The allowed region in the plane is found from the
Tevatron data on the cross section and forward-backward
asymmetry of the production. The mass limits
for the -boson are shown to be stronger than those for the axigluon. A
possible effect of the -boson on the production at the LHC is
discussed and the mass limits providing for the -boson evidence at the LHC
are estimated in dependence on .Comment: 11 pages, 2 figures, accepted for publication in Modern Physics
Letters
Impact analysis of TOTEM data at the LHC: black disk limit exceeded
We discuss the profile of the impact--parameter dependent elastic scattering
amplitude. Extraction of impact-parameter dependence from the dataset with
inclusion of the experimental data on elastic scattering at the LHC energies
helps to reveal the asymptotics of hadron interactions. Analysis of the data
clearly indicates that the impact-parameter elastic scattering amplitude exceed
the black disk limit at the LHC energy 7TeV and the inelastic overlap function
reaches its maximum value at Comment: 5 pages, 5 figure
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