Chirally motivated $\bar{K}N$ amplitudes for in-medium applications - INSPIRE

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Chirally motivated $\bar{K}N$ amplitudes for in-medium applications

A. Cieply
(
- Rez, Nucl. Phys. Inst.
)
,
J. Smejkal
(
- IEAP CTU, Prague
)

Dec, 2011

18 pages

Part of Progress in strangeness nuclear physics. Proceedings, ECT Workshop on Strange Hadronic Matter, Trento, Italy, September 26-30, 2011, 115-126

Published in:

Nucl.Phys.A 881 (2012) 115-126

Contribution to:

ECT* Workshop on Strange Hadronic Matter, 115-126

e-Print:

1112.0917 [nucl-th]

DOI:

10.1016/j.nuclphysa.2012.01.028

View in:

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Abstract: (Elsevier)

A new fit of a chirally motivated coupled-channel model for meson–baryon interactions is presented including the recent SIDDHARTA data on the 1 s level characteristics of kaonic hydrogen. The kaon–nucleon amplitudes generated by the model are fully consistent with our earlier studies. We argue that a sharp increase of the real part of the in-medium K−p amplitude at subthreshold energies provides a link between the shallow K¯ –nuclear optical potentials obtained microscopically from threshold K¯N interactions and the phenomenological deep ones deduced from kaonic atoms data. The impact on the A -dependence of the Λ -hypernuclear formation rates measured in reactions with stopped kaons is discussed too.

Note:

18 pages, updated to match the version accepted for publication in a special issue of Nuclear Physics A on Strangeness Nuclear Physics

21.65.Jk
13.75.Jz
21.80.+a
Chiral model
Kaon-nucleon amplitude
Nuclear medium effects
Optical potential
Hypernuclei
Kaon–nucleon amplitude
anti-K nucleon: interaction

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Figures(5)

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