Dynamics of pion production in heavy-ion collisions around 1A GeV energies

Feng, Zhao-Qing; Jin, Gen-Ming

doi:10.1103/PhysRevC.82.044615

Dynamics of pion production in heavy-ion collisions around 1A GeV energies

Jun, 2010

10 pages

Published in:

Phys.Rev.C 82 (2010) 044615

e-Print:

1006.2459 [nucl-th]

DOI:

10.1103/PhysRevC.82.044615

Report number:

11

View in:

pdf

reference search25 citations

Citations per year

Abstract: (arXiv)

Within the framework of the improved isospin dependent quantum molecular dynamics (ImIQMD) model, the dynamics of pion emission in heavy-ion collisions in the region 1 A GeV as a probe of nuclear symmetry energy at supra-saturation densities is investigated systematically. The total pion multiplicities and the

\pi^{-}/\pi^{+}

yields are calculated for selected Skyrme parameters SkP, SLy6, Ska and SIII, and also for the cases of different stiffness of symmetry energy with the parameter SLy6. The influence of Coulomb potential, symmetry energy and in-medium pion potential on the pion production is investigated and compared each other by analyzing the distributions of transverse momentum and longitudinal rapidity and also the excitation functions of the total pion and the

\pi^{-}/\pi^{+}

ratio. The directed flow, elliptic flow and polar angle distributions are calculated at the cases of different collision centralities and symmetry energies.

13.75.Gx
25.80.Ls
25.75.-q
energy: symmetry
pi: production
heavy ion: scattering
pi: multiplicity
potential: Coulomb
isospin: quantum molecular dynamics
transverse momentum: momentum spectrum

References(44)

Figures(11)

Isospin asymmetry in nuclei and neutron stars

Andrew W. Steiner
(
- Minnesota U. and
- Los Alamos
)
,
Madappa Prakash
(
- SUNY, Stony Brook
)
,
James M. Lattimer
(
- SUNY, Stony Brook
)
,
Paul J. Ellis
(
- Minnesota U.
)

- Phys.Rept. 411 (2005) 325-375
•
e-Print:
- nucl-th/0410066
•
DOI:
- 10.1016/j.physrep.2005.02.004

Recent Progress and New Challenges in Isospin Physics with Heavy-Ion Reactions

Bao-An Li
(
- Texas A-M, Commerce
)
,
Lie-Wen Chen
(
- Shanghai Jiaotong U.
)
,
Che Ming Ko
(
- Texas A-M and
- Texas A-M, Cyclotron Inst.
)

- Phys.Rept. 464 (2008) 113-281
•
e-Print:
- 0804.3580
•
DOI:
- 10.1016/j.physrep.2008.04.005

Determination of the stiffness of the nuclear symmetry energy from isospin diffusion

Lie-Wen Chen
(
- Texas A-M, Cyclotron Inst. and
- Texas A-M
)
,
Che Ming Ko
(
- Texas A-M, Cyclotron Inst. and
- Texas A-M
)
,
Bao-An Li
(
- Arkansas State U.
)

- Phys.Rev.Lett. 94 (2005) 032701
•
e-Print:
- nucl-th/0407032
•
DOI:
- 10.1103/PhysRevLett.94.032701

Systematics of pion emission in heavy ion collisions in the 1A- GeV regime

FOPI

Collaboration

•

W. Reisdorf

et al.

- Nucl.Phys.A 781 (2007) 459-508
•
e-Print:
- nucl-ex/0610025
•
DOI:
- 10.1016/j.nuclphysa.2006.10.085

Circumstantial Evidence for a Soft Nuclear Symmetry Energy at Suprasaturation Densities

Zhigang Xiao
(
- Tsinghua U., Beijing
)
,
Bao-An Li
(
- Texas A-M, Commerce
)
,
Lie-Wen Chen
(
- Shanghai Jiaotong U.
)
,
Gao-Chan Yong
(
- Lanzhou, Inst. Modern Phys.
)
,
Ming Zhang
(
- Tsinghua U., Beijing
)

- Phys.Rev.Lett. 102 (2009) 062502
•
e-Print:
- 0808.0186
•
DOI:
- 10.1103/PhysRevLett.102.062502

Isospin effects on sub-threshold kaon production at intermediate energies

G. Ferini
(
- Catania U. and
- INFN, LNS
)
,
T. Gaitanos
(
- Munich U.
)
,
M. Colonna
(
- Catania U. and
- INFN, LNS
)
,
M. Di Toro
(
- Catania U. and
- INFN, LNS
)
,
H.H. Wolter
(
- Munich U.
)

- Phys.Rev.Lett. 97 (2006) 202301
•
e-Print:
- nucl-th/0607005
•
DOI:
- 10.1103/PhysRevLett.97.202301

Isospin Effects on Strangeness in Heavy-Ion Collisions

V. Prassa
(
- Aristotle U., Thessaloniki
)
,
T. Gaitanos
(
- Giessen U.
)
,
G. Ferini
(
- INFN, LNS
)
,
M. Di Toro
(
- INFN, LNS
)
,
G.A. Lalazissis
(
- Thessaloniki U.
)

et al.

- Nucl.Phys.A 832 (2010) 88-99
•
e-Print:
- 0907.4611
•
DOI:
- 10.1016/j.nuclphysa.2009.11.009

Improved isospin dependent quantum molecular dynamics model and its application to fusion reactions near Coulomb barrier

- Nucl.Phys.A 750 (2005) 232-244
•
DOI:
- 10.1016/j.nuclphysa.2005.01.001

Dynamical analysis on heavy-ion fusion reactions near Coulomb barrier

Zhao-Qing Feng
(
- Lanzhou, Inst. Modern Phys. and
- Darmstadt, GSI
)
,
Gen-Ming Jin
(
- Lanzhou, Inst. Modern Phys.
)
,
Feng-Shou Zhang
(
- Beijing Normal U.
)

- Nucl.Phys.A 802 (2008) 91-106
•
e-Print:
- 0711.3721
•
DOI:
- 10.1016/j.nuclphysa.2008.01.022

Fusion dynamics of symmetric systems near barrier energies

- Phys.Rev.C 80 (2009) 037601
•
e-Print:
- 0909.1089
•
DOI:
- 10.1103/PhysRevC.80.037601

Pion Production in Heavy-ion Collisions in the 1 A GeV region

- Chin.Phys.Lett. 26 (2009) 062501
•
e-Print:
- 0904.2996
•
DOI:
- 10.1088/0256-307X/26/6/062501

Probing high-density behavior of symmetry energy from pion emission in heavy-ion collisions

- Phys.Lett.B 683 (2010) 140-144
•
e-Print:
- 0904.2990
•
DOI:
- 10.1016/j.physletb.2009.12.006

'Quantum' molecular dynamics: A Dynamical microscopic n body approach to investigate fragment formation and the nuclear equation of state in heavy ion collisions

J. Aichelin
(
- Heidelberg U.
)

- Phys.Rept. 202 (1991) 233-360
•
DOI:
- 10.1016/0370-1573(91)90094-3

Modeling the many body dynamics of heavy ion collisions: Present status and future perspective

et al.

- Eur.Phys.J.A 1 (1998) 151-169
•
e-Print:
- nucl-th/9811015
•
DOI:
- 10.1007/s100500050045

Analysis of isospin dependence of nuclear collective flow in an isospin-dependent quantum molecular dynamics model

- Phys.Rev.C 58 (1998) 2283-2291
•
DOI:
- 10.1103/PhysRevC.58.2283

Importance of Momentum Dependent Interactions for the Extraction of the Nuclear Equation of State From High-energy Heavy Ion Collisions

J. Aichelin
(
- Heidelberg U. and
- Heidelberg, Max Planck Inst.
)
,
A. Rosenhauer
(
- Frankfurt U.
)
,
G. Peilert
(
- Frankfurt U.
)
,
Horst Stoecker
(
- Frankfurt U.
)
,
W. Greiner
(
- Frankfurt U.
)

- Phys.Rev.Lett. 58 (1987) 1926-1929,
- Phys. Rev. Lett. 58 ( 1987) 1926-1929,
- IN *HIRSCHEGG 1987, PROCEEDINGS, GROSS PROPERTIES OF NUCLEI AND NUCLEAR EXCITATIONS*, 116-127. (PHYS. REV. LETT. 58 (1987) 1926).
•
DOI:
- 10.1103/PhysRevLett.58.1926