$\Lambda$ polarization in peripheral collisions at moderate relativistic energies

The polarization of Λ hyperons from relativistic flow vorticity is studied in peripheral heavy ion reactions at FAIR and NICA energies, just above the threshold of the transition to the quark-gluon plasma. Previous calculations at higher energies with larger initial angular momentum, predicted significant Λ polarization based on the classical vorticity term in the polarization, while relativistic modifications decreased the polarization and changed its structure in the momentum space. At the lower energies studied here, we see the same effect namely that the relativistic modifications decrease the polarization arising from the initial shear flow vorticity.

25.75.-q
24.70.+s
47.32.Ef
flow: relativistic
energy: high
quark gluon: plasma
polarization
peripheral
angular momentum
heavy ion: scattering

References(38)

Figures(15)

[1]

Global collective flow in heavy ion reactions from the beginnings to the future

L.P. Csernai
(
- Bergen U.
)
,
H. Stöcker
(
- Darmstadt, GSI and
- Frankfurt U., FIAS
)

- J.Phys.G 41 (2014) 12, 124001
•
e-Print:
- 1406.1153
•
DOI:
- 10.1088/0954-3899/41/12/124001

[2]

Characterization of initial fluctuations for the hydrodynamical description of heavy ion collisions

Stefan Floerchinger
(
- CERN
)
,
Urs Achim Wiedemann
(
- CERN
)

- Phys.Rev.C 88 (2013) 044906
•
e-Print:
- 1307.7611
•
DOI:
- 10.1103/PhysRevC.88.044906

[3]

Fluid Dynamical Prediction of Changed v1-flow at LHC

L.P. Csernai
(
- Bergen U. and
- Budapest, RMKI and
- Frankfurt U.
)
,
V.K. Magas
(
- Barcelona U., ECM
)
,
H. Stocker
(
- Frankfurt U.
)
,
D.D. Strottman
(
- Bergen U. and
- Frankfurt U.
)

- Phys.Rev.C 84 (2011) 024914
•
e-Print:
- 1101.3451
•
DOI:
- 10.1103/PhysRevC.84.024914

[4]

Kelvin-Helmholz instability in high energy heavy ion collisions

L.P. Csernai
(
- Bergen U. and
- Wigner RCP, Budapest and
- Frankfurt U., FIAS
)
,
D.D. Strottman
(
- Wigner RCP, Budapest and
- Frankfurt U., FIAS
)
,
Cs. Anderlik
(
- Bergen U.
)

- Phys.Rev.C 85 (2012) 054901
•
e-Print:
- 1112.4287
•
DOI:
- 10.1103/PhysRevC.85.054901

[5]

Vorticity in peripheral collisions at the Facility for Antiproton and Ion Research and at the JINR Nuclotron-based Ion Collider fAcility

L.P. Csernai
(
- Bergen U.
)
,
D.J. Wang
(
- Bergen U.
)
,
M. Bleicher
(
- Frankfurt U., FIAS and
- Frankfurt U.
)
,
H. Stöcker
(
- Frankfurt U., FIAS and
- Frankfurt U. and
- Darmstadt, GSI
)

- Phys.Rev.C 90 (2014) 2, 021904
•
DOI:
- 10.1103/PhysRevC.90.021904

[6]

DECELERATION OF HIGH-ENERGY PROTONS BY HEAVY NUCLEI

L.P. Csernai
(
- Minnesota U.
)
,
Joseph I. Kapusta
(
- Minnesota U.
)

- Phys.Rev.D 31 (1985) 2795-2799,
- Phys. Rev. D31 ( 1985) 2795-2799
•
DOI:
- 10.1103/PhysRevD.31.2795

[7]

The Initial state of ultrarelativistic heavy ion collision

V.K. Magas
(
- Bergen U.
)
,
L.P. Csernai
(
- Bergen U. and
- Budapest, RMKI
)
,
D.D. Strottman
(
- Los Alamos and
- Frankfurt U.
)

- Phys.Rev.C 64 (2001) 014901
•
e-Print:
- hep-ph/0010307
•
DOI:
- 10.1103/PhysRevC.64.014901

[7]

Effective string rope model for the initial stages of ultrarelativistic heavy ion collisions

V.K. Magas
(
- CFIF, Lisbon and
- Lisbon, IST and
- Bergen U.
)
,
L.P. Csernai
(
- Bergen U. and
- Budapest, RMKI
)
,
D. Strottman
(
- Los Alamos
)

- Nucl.Phys.A 712 (2002) 167-204
•
e-Print:
- hep-ph/0202085
•
DOI:
- 10.1016/S0375-9474(02)01073-4

[8]

Color Rope Model for Extreme Relativistic Heavy Ion Collisions

T.S. Biro
(
- Bohr Inst. and
- Darmstadt, GSI
)
,
Holger Bech Nielsen
(
- Bohr Inst. and
- Darmstadt, GSI
)
,
Joern Knoll
(
- Bohr Inst. and
- Darmstadt, GSI
)

- Nucl.Phys.B 245 (1984) 449-468,
- Darmstadt Schwerionenforsch. - GSI 84-23 (84,REC.APR.) 41p,
- Nucl. Phys. B245 ( 1984) 449-468 and Darmstadt Schwerionenforsch. - GSI 84-23 (84,REC.APR.) 41p
•
DOI:
- 10.1016/0550-3213(84)90441-3