In-medium pion dispersion relation and medium correction of near the threshold energy of pion production *
- 1 April 2021
- journal article
- Published by IOP Publishing in Chinese Physics C
- Vol. 45 (4), 044109
- https://doi.org/10.1088/1674-1137/abe10e
Abstract
Transport models cannot simultaneously explain very recent data on pion multiplicities and pion charged ratios from central collision of Sn+Sn at 0.27 A GeV. This stimulates further investigations on the pion dispersion relation, in-medium cross sections, and decay widths near the threshold energy or at subthreshold energy of pion production in isospin asymmetric nuclear matter. In this study, the pion dispersion relation, in-medium cross section, and decay width near the threshold energy are investigated in isospin asymmetric nuclear matter by using the one-boson-exchange model. With the consideration of the energy conservation effect, the in-medium cross sections are enhanced at GeV in a nuclear medium. The prediction of pion multiplicity and ratios near the threshold energy could be modified if this effect is considered in transport model simulations.Keywords
Funding Information
- National Natural Science Foundation of China (11875323, 11875125, 11475262, 11961141003,)
- National Key R&D Program of China (2018 YFA0404404)
- Continuous Basic Scientific Research Project (WDJC-2019-13,No BJ20002501)
This publication has 48 references indexed in Scilit:
- Probing high-density behavior of symmetry energy from pion emission in heavy-ion collisionsPhysics Letters B, 2010
- Off-shell pions in Boltzmann-Uehling-Uhlenbeck transport theoryPhysical Review C, 2002
- Probing the High Density Behavior of the Nuclear Symmetry Energy with High Energy Heavy-Ion CollisionsPhysical Review Letters, 2002
- Relativistic quantum transport theory of hadronic matter: The coupled nucleon,, and pion systemPhysical Review C, 1999
- Δdecay in the nuclear mediumPhysical Review C, 1997
- Transport model with quasipionsPhysical Review C, 1993
- Pion-pion scattering in nuclear matterPhysics Letters B, 1992
- Problems of describing spin-(3/2 baryon resonances in the effective Lagrangian theoryPhysical Review C, 1989
- The bonn meson-exchange model for the nucleon—nucleon interactionPhysics Reports, 1987
- Isobar-hole doorway states and π-16O scatteringAnnals of Physics, 1979