Renormalization of the f0(980) and a0(980) scalar resonances in a nuclear medium

E. Oset; M.J. Vicente Vacas

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Renormalization of the f0(980) and a0(980) scalar resonances in a nuclear medium

E. Oset, M.J. Vicente Vacas

Nuclear Theory · Submitted 12 Apr 2000

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim By using a chiral unitary approach which generates the f0 and a0 resonances and reproduces their free properties, we find that the position of the resonances in the medium is barely changed but their widths are considerably broadened.

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arXiv IDnucl-th/0004030 (version 1)

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CitationE. Oset, M.J. Vicente Vacas. "Renormalization of the f0(980) and a0(980) scalar resonances in a nuclear medium." arXiv:nucl-th/0004030 (2000). https://pith.science/paper/7E6GTYFK

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The meson meson interaction in the scalar sector in the presence of a nuclear medium is studied with particular attention to the change of the properties of the f0(980) and a0(980) resonances. By using a chiral unitary approach which generates the f0 and a0 resonances and reproduces their free properties, we find that the position of the resonances in the medium is barely changed but their widths are considerably broadened. New many body corrections generating from higher orders in the chiral Lagrangian plus the contribution from N*h excitations, not considered before in connection with the pion-pion interaction in the nuclear medium, are also investigated.

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#	sentence	role	the authors' own work	states the main conclusion	strength
s0	The meson meson interaction in the scalar sector in the presence of a nuclear medium is studied with particular attention to the change of the properties of the f0(980) and a0(980) resonances.	contribution 0.72	0.81	0.04	asserted 0.81
s1	By using a chiral unitary approach which generates the f0 and a0 resonances and reproduces their free properties, we find that the position of the resonances in the medium is barely changed but their widths are considerably broadened.	result 1.00	0.96	0.85	asserted 1.00
s2	New many body corrections generating from higher orders in the chiral Lagrangian plus the contribution from N*h excitations, not considered before in connection with the pion-pion interaction in the nuclear medium, are also investigated.	contribution 0.90	0.85	0.05	asserted 0.89

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Original abstract

The meson meson interaction in the scalar sector in the presence of a nuclear medium is studied with particular attention to the change of the properties of the f0(980) and a0(980) resonances. By using a chiral unitary approach which generates the f0 and a0 resonances and reproduces their free properties, we find that the position of the resonances in the medium is barely changed but their widths are considerably broadened. New many body corrections generating from higher orders in the chiral Lagrangian plus the contribution from N*h excitations, not considered before in connection with the pion-pion interaction in the nuclear medium, are also investigated.

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Cites it as background 1 paper

In addition, only few attempts at understanding the modifications of the $f_0(980)$ in dense matter exist (see e.g. [ref] ), mostly due to its unclear nature.

The structure of the f_0(980) from system size dependent hadronic resonance ratios in p+p, p+Pb, and Pb+Pb collisions at the LHC · Introduction · 0.84

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