In-Medium Effects on K$^0$ Mesons in Relativistic Heavy-Ion Collisions

Agakishiev, G.; Balanda, A.; Bannier, B.; Bassini, R.; Belver, D.; Belyaev, A.V.; Blanco, A.; Bohmer, M.; Boyard, J.L.; Cabanelas, P.

doi:10.1103/PhysRevC.82.044907

In-Medium Effects on K $^0$ Mesons in Relativistic Heavy-Ion Collisions

Apr, 2010

10 pages

Published in:

Phys.Rev.C 82 (2010) 044907

e-Print:

1004.3881 [nucl-ex]

DOI:

10.1103/PhysRevC.82.044907

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Abstract: (arXiv)

We present the transverse momentum spectra and rapidity distributions of

\pi^{-}

and K

^0_S

in Ar+KCl reactions at a beam kinetic energy of 1.756 A GeV measured with the spectrometer HADES. The reconstructed K

^0_S

sample is characterized by good event statistics for a wide range in momentum and rapidity. We compare the experimental

\pi^{-}

and K

^0_S

distributions to predictions by the IQMD model. The model calculations show that K

^0_S

at low tranverse momenta constitute a particularly well suited tool to investigate the kaon in-medium potential. Our K

^0_S

data suggest a strong repulsive in-medium K

^0

potential of about 40 MeV strength.

Note:

10 pages, 10 figures, accepted by Phys. Rev. C

25.75.Dw
25.75.-q
heavy ion: scattering
argon
potassium: chlorine
K0(S): hadroproduction
pi-: hadroproduction
transverse momentum: momentum spectrum
rapidity spectrum
K0 nucleus: potential

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In-Medium Effects on K0^00 Mesons in Relativistic Heavy-Ion Collisions

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In-Medium Effects on K $^0$ Mesons in Relativistic Heavy-Ion Collisions