{phi} meson width in the medium from proton induced {phi} production in nuclei

Journal Article · Wed Jun 01 00:00:00 EDT 2005 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.71.065202· OSTI ID:20698776

Magas, V K; Roca, L; Oset, E ^[1]

---

1. Departamento de Fisica Teorica and IFIC Centro Mixto Universidad de Valencia-CSIC, Institutos de Investigacion de Paterna, Apdo. correos 22085, E-46071, Valencia (Spain)

We perform calculations for the production of {phi} mesons in nuclei at energies just above threshold and study the A dependence of the cross section. We use results for the {phi} self-energy in the medium obtained within a chiral unitary approach. We find a strong A dependence which is tied to the distortion of the incident proton and to the absorption of the {phi} on its way out of the nucleus. The effect of this latter process reduces the cross section by about a factor of 2 in heavy nuclei, proving that the A dependence of the cross section bears valuable information on the {phi} width in the nuclear medium. Calculations are done for energies accessible in an experimental facility like COSY.

• OSTI ID: 20698776
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 71, Issue 6; Other Information: DOI: 10.1103/PhysRevC.71.065202; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ABSORPTION
CHIRALITY
CROSS SECTIONS
HEAVY NUCLEI
NUCLEAR MATTER
PARTICLE PRODUCTION
PHI-1020 MESONS
PROTON REACTIONS
PROTON-NUCLEON INTERACTIONS
PROTONS
SELF-ENERGY