328 research outputs found
Behavior of the Hadron Potential at Large Distances and Properties of the Hadron Spin-flip Amplitude
The impact of the form of the hadron potential at large distances on the
behaviour of the hadron spin-flip amplitude at small angles is examined. The
-dependence of the spin-flip amplitude of high energy hadron elastic
scattering is analyzed under different assumptions on the hadron interaction.
It is shown that the long tail of the non-Gaussian form of the hadron potential
of the hadron interaction in the impact parameter representation leads to a
large value of the slope of the spin-flip amplitude (without the kinematical
factor ) as compared with the slope of the spin-non-flip amplitude.
This effect can explain the form of the differential cross section and the
analyzing power at small transfer momenta. The methods for the definition of
the spin-dependent part of the hadron scattering amplitude are presented. A
possibility to investigate the structure of the hadron spin-flip amplitude from
the accurate measure of the differential cross section and the spin correlation
parameters is shown.Comment: 13 pages, LaTeX, 3 figures.p
Can experimental tests of Bell inequalities performed with pseudoscalar mesons be definitive?
We discuss if experimental tests of Bell inequalities performed with
pseudoscalar mesons (K or B) can be definitive. Our conclusion is that this is
not the case, for the efficiency loophole cannot be eliminated.Comment: submitted for publicatio
Of Dips, Structures and Eikonalization
We have investigated several models of Pomeron and Odderon contributions to
high energy elastic and scattering. The questions we address
concern their role in this field, the behavior of the scattering amplitude (or
of the total cross-section) at high energy, and how to fit all high energy
elastic data. The data are extremely well reproduced by our approach at all
momenta and for sufficiently high energies. The relative virtues of Born
amplitudes and of different kinds of eikonalizations are considered. An
important point in this respect is that secondary structures are predicted in
the differential cross-sections at increasing energies and these phenomena
appear quite directly related to the procedure of eikonalizing the various Born
amplitudes. We conclude that these secondary structures arise naturally within
the eikonalized procedure (although their precise localization turns out to be
model dependent). The fitting procedure naturally predicts the appearance of a
zero at small in the real part of the even amplitude as anticipated by
general theorems. We would like to stress, once again, how important it would
be to have at LHC both and options for many questions connected
to the general properties of high energy hadronic physics and for a check of
our predictions.Comment: 28 pages, LaTeX, 7 figure
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