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Title: Rescattering in meson photoproduction from few body systems

Abstract

Exclusive reactions induced at high momentum transfer in few body systems provide us with an original way to study the production and propagation of hadrons in cold nuclear matter. In very well-defined parts of the phase space, the reaction amplitude develops a logarithmic singularity. It is on solid ground since it depends on only on-shell elementary amplitudes and on low momentum components of the nuclear wave function. This is the best window for studying the propagation of exotic configurations of hadrons such as the onset of color transparency. It may appear earlier in meson-photoproduction reactions, more particularly in the strange sector, than in the more classical quasi-elastic scattering of electrons. More generally, those reactions provide us with the best tool to determine the cross section of the scattering of various hadrons (strange particles, vector mesons) from the nucleon and to obtain the production of possible exotic states.

Authors:
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA
Sponsoring Org.:
USDOE - Office of Energy Research (ER)
OSTI Identifier:
882548
Report Number(s):
JLAB-THY-05-465; DOE/ER/40150-3891
DOE Contract Number:
AC05-84ER40150
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review C; Journal Volume: 73
Country of Publication:
United States
Language:
English

Citation Formats

J-M. Laget. Rescattering in meson photoproduction from few body systems. United States: N. p., 2006. Web. doi:10.1103/PhysRevC.73.044003.
J-M. Laget. Rescattering in meson photoproduction from few body systems. United States. doi:10.1103/PhysRevC.73.044003.
J-M. Laget. Sat . "Rescattering in meson photoproduction from few body systems". United States. doi:10.1103/PhysRevC.73.044003. https://www.osti.gov/servlets/purl/882548.
@article{osti_882548,
title = {Rescattering in meson photoproduction from few body systems},
author = {J-M. Laget},
abstractNote = {Exclusive reactions induced at high momentum transfer in few body systems provide us with an original way to study the production and propagation of hadrons in cold nuclear matter. In very well-defined parts of the phase space, the reaction amplitude develops a logarithmic singularity. It is on solid ground since it depends on only on-shell elementary amplitudes and on low momentum components of the nuclear wave function. This is the best window for studying the propagation of exotic configurations of hadrons such as the onset of color transparency. It may appear earlier in meson-photoproduction reactions, more particularly in the strange sector, than in the more classical quasi-elastic scattering of electrons. More generally, those reactions provide us with the best tool to determine the cross section of the scattering of various hadrons (strange particles, vector mesons) from the nucleon and to obtain the production of possible exotic states.},
doi = {10.1103/PhysRevC.73.044003},
journal = {Physical Review C},
number = ,
volume = 73,
place = {United States},
year = {Sat Apr 01 00:00:00 EST 2006},
month = {Sat Apr 01 00:00:00 EST 2006}
}
  • Exclusive reactions induced at high momentum transfer in few body systems provide us with an original way to study the production and propagation of hadrons in cold nuclear matter. In very well-defined parts of the phase space, the reaction amplitude develops a logarithmic singularity. It is on solid ground since it depends on only on-shell elementary amplitudes and on low momentum components of the nuclear wave function. This is the best window for studying the propagation of exotic configurations of hadrons such as the onset of color transparency. It may appear earlier in meson-photoproduction reactions, more particularly in the strangemore » sector, than in the more classical quasi-elastic scattering of electrons. More generally, those reactions provide us with the best tool to determine the cross section of the scattering of various hadrons (strange particles, vector mesons) from the nucleon and to obtain the production of possible exotic states.« less
  • Exclusive reactions induced at high momentum transfer in few body systems allow to adjust the formation time of the produced particles to the distance between two nucleons in the target. They are the best windows to study the propagation of exotic configurations of hadrons such as for instance the onset of color transparency. It may appear earlier in meson photo-production reactions, in the strange sector more particularly, than in more classical quasi elastic scattering of electrons. More generally, those reactions provide them with the best tool to determine the cross section of the scattering of various hadrons (strange particles, vectormore » mesons) with nucleon, to better understand the mechanisms of their formation in cold hadronic matter, and to access the production of possible exotic states. At the top of the unitary rescattering peak (triangular logarithmic singularity), the reaction amplitude is on solid ground since it depends only on on-shell elementary amplitudes and on low momentum components of the nuclear wave function.« less
  • It is shown that if the effects of nucleon binding on deep inelastic scattering are considered within many-body realistic descriptions of nuclei which include nucleon-nucleon correlations, the European-Muon-Collaboration effect in light and medium weight nuclei and nuclear matter can be accounted for in the region 0.2{le}{ital x}{le}0.5, but a systematic discrepancy between theory and experiment remains to be explained for 0.5{le}{ital x}{le}0.9.
  • From a comparison between the binding energies obtained in few-body systems for potentials operating first on relative {ital S} states only, and then on all orbitals we deduce the contribution of the {ital l}{ne}0 orbitals to the binding energy generated by local potentials. By a comparison of the exact solution of the Schroedinger equation to the one obtained from an integro-differential equation approach where only two-body correlations are taken into account one deduces the contribution of the {ital N}-body correlations ({ital N}{gt}2).
  • Within general characteristics of low-energy few-body systems, we revise some well-known correlations found in nuclear physics, and the properties of low-mass halo nuclei in a three-body neutron-neutron-core model. In this context, near the critical conditions for the occurrence of an Efimov state, we report some results obtained for the neutron-{sup 19}C elastic scattering.