Hadrons in medium

Mosel, U.

doi:10.1007/bf02704802

Cited by 3 publications

(4 citation statements)

References 33 publications

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“…Therefore, it is useful to explore the reactions with elementary probes (γ, π, p) since sizeable -about 20% -medium effects were predicted already at the density of ordinary nuclei [2], [13], [14]. The advantage of the investigations of the reactions on nuclei is related to the fact that they proceed in the nearly cold static nuclear matter and thus the colliding system is much better under control.…”

Section: Physics Motivaionmentioning

confidence: 99%

Study of in-medium ω-meson properties in Ap and pA collisions

Kiselev

Chumakov

2010

Phys. Atom. Nuclei

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We propose to investigate the in-medium properties of vector ω mesons at the normal nuclear density in Ap(pA) collisions and at higher density in AA collisions at the ITEP accelerator facility TWAC. Using of the inverse Ap kinematics will permit us to study the ω meson production in a wide momentum interval included the not yet explored range of small meson momenta relative to the projectile nuclei where the mass modification effect in nuclear matter is expected to be the strongest. Momentum dependence of the in-medium ω meson width will be studied in the traditional pA kinematics. We intend to use the electromagnetic calorimeter for reconstruction of the ω meson invariant mass by detecting photons from the ω → π 0 γ → 3γ decay. The model calculations and simulations with RQMD generator show feasibility of the proposed experiment. Available now intensity of the ion beams provides a possibility to collect large statistics and make decisive conclusion about the ω meson properties at density of normal nuclei. At the second stage of the investigation the ω meson properties will be studied in AA collisions at higher density. Interpretation of these measurements will be based on the results obtained in Ap(pA) interactions. Further investigation of the in-medium properties of light unflavored and charmed mesons can be performed at ITEP and at GSI(FAIR) where higher ion energies will be accessible in near future.

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Section: Physics Motivaionmentioning

confidence: 99%

Study of in-medium ω-meson properties in Ap and pA collisions

Kiselev

Chumakov

2010

Phys. Atom. Nuclei

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“…From eqs (3,4) one can observe that χ can be nonzero if ρ s is nonzero but χ must vanish when ρ s vanishes. To simplify the problem, we assume that the dielectric field is spherically symmetirc and time independent and quarks are in 1s 1/2 orbital.…”

Section: Chiral Color Dielectric Modelmentioning

confidence: 99%

“…3 For example, the change in the pole position of nucleon propagator in nuclear medium means the nucleon mass changes because the pole of the propagator is interpretted as the mass of an interating particle. This interaction does lead to the change in the properties (mass, propagator, electromagnetic form factors etc) of the nucleon.…”

Section: Introductionmentioning

confidence: 99%

Nucleon in Nuclear Medium

Phatak

2009

Int. J. Mod. Phys. E

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The behavior of a nucleon in nuclear medium is discussed in Chiral Color Dielectric Model. It is assumed that the nucleons in nuclear medium produces a background dielectric field and the quark and dielectric field equations are solved self consistantly in presence of the dielectric field. A nucleon in nuclear medium is then constructed by means of standard procedure followed in chiral bag models. The corrections due to center of mass motion, color magnetic interaction and meson interaction are included. The calculations show that the nucleon becomes bigger in the medium but its mass does not change much. It is found that beyond a certian density, bound solutions in which quarks are bound in self-generated dielectric field are not possible. Thus, the calculations indicate that there is a critical density beyond which the matter consists of deconfined quarks.

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“…The behavior of mesons in a nuclear medium has attracted much attention during the last years [1]. We mention the existence and properties of deeply bound meson-nuclear states [2] as well as the possible restoration of chiral symmetry in the nuclear environment [3], a point closely related to modifications of widths and masses of the mesons propagating through nuclear matter [4].…”

Section: Introductionmentioning

confidence: 99%

Binding of charmonium with two- and three-body nuclei

et al. 2006

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The energies of the (eta_c d) and (eta_c 3He) bound states are calculated on the basis of exact three- and four-body AGS equations. For the eta_c N interaction a Yukawa-type potential has been adopted. The calculations are done for a certain range of its strength parameter. The results obtained are quite different from calculations based on the folding model.Comment: 5 pages, 2 figures; added present address of NV

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Hadrons in medium

Cited by 3 publications

References 33 publications

Study of in-medium ω-meson properties in Ap and pA collisions

Study of in-medium ω-meson properties in Ap and pA collisions

Nucleon in Nuclear Medium

Binding of charmonium with two- and three-body nuclei

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