Theory of kaonic atoms

Alberg, Mary; Henley, E.M.; Wilets, L.

doi:10.1016/0003-4916(76)90111-1

Cited by 69 publications

(30 citation statements)

References 39 publications

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“…We also note that the Brueckner-type calculations of Ref. [13] obtained a shallow K − -nucleus potential, of the order of −40 MeV at the center of 12 C, and predicted reasonably well the data available at that time.…”

Section: Resultssupporting

confidence: 79%

“…For instance, Pauli blocking on the intermediate nucleon states, makes theKN interaction density dependent and this, in turn, modifies the K − properties from those in free space. These medium modifications were already included long time ago in the context of Brueckner-type many body theory [13] to obtain the kaon-nucleus optical potential for kaonic atoms. The medium properties of kaons and antikaons have also been obtained from mean field theories, built within the framework of chiral Lagrangians [4,14], based on the relativistic Walecka-type model extended to incorporate strangeness in the form of hyperons or kaons [15], or using explicitly quark degrees of freedom [16].…”

Section: Introductionmentioning

confidence: 99%

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The properties of K̄ in the nuclear medium

Ramos¹,

Oset²

2000

Nuclear Physics A

297

578

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The self-energy of the K − meson in nuclear matter is calculated in a selfconsistent microscopic approach, using aKN interaction obtained from the lowest-order meson-baryon chiral Lagrangian. The effectiveKN interaction in the medium is derived by solving the coupled-channel Bethe-Salpeter equation including Pauli blocking on the nucleons, mean-field binding potentials for the baryons and the self-energy of the π andK mesons. The incorporation of the self-consistentK self-energy in the description, in addition to the Pauli blocking effects, yields a weaker attractive in-mediumKN interaction and a Λ(1405) which dissolves faster with increasing matter density, as a result of theK spectral function being spread out over a wide range of energies. These effects are further magnified when the intermediate pions are dressed.

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Section: Resultssupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

The properties of K̄ in the nuclear medium

Ramos¹,

Oset²

2000

Nuclear Physics A

297

578

View full text Add to dashboard Cite

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“…In fact, there are studies of kaonic atoms carried out by modifying the properties of (1405) in nuclear medium [9][10][11]. These works reproduce the properties of specific kaonic atoms reasonably well.…”

Section: Introductionmentioning

confidence: 99%

In-flight (K−,p) reactions for the formation of kaonic atoms and kaonic nuclei using the Green function method

2006

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We study theoretically the kaonic atom and kaonic nucleus formations in the in-flight (K − , p) reactions using the Green function method, which is suited to evaluate formation rates both of stable and unstable bound systems. We consider 12 C and 16 O as the targets and calculate the spectra of the (K − , p) reactions. We conclude that no peak structure resulting from kaonic nucleus formation is expected in the reaction spectra calculated with the chiral unitary kaon-nucleus optical potential. In the spectra with the phenomenological deep kaon-nucleus potential, it may be possible to observe some structures because of the formation of the kaonic nucleus states. For all cases, we find clear signals because of the kaonic atom formations in the reaction spectra, which show very interesting structures, such as the RESONANCE DIP instead of the resonance peak for the atomic 1s state formation.

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“…The problem of kaonic atoms has attracted considerable attention along the years [1][2][3][4][5][6][7][8][9] and has regained interest recently due to the new perspective that the use of chiral Lagrangians has brought to the problem of the kaon interaction with a nuclear medium [10][11][12][13]. The need to obtain accurate results for the kaon selfenergy in a nuclear medium in view of the possibility to get kaon condensates in neutron-proton stars [14][15][16] has also added a renewed interest in the subject.…”

Section: Introductionmentioning

confidence: 99%

“…The dominance of the s-wave in the elementary interaction has been the justification for using traditionally s-waveK nucleus optical potentials [1][2][3][4][5][6][7][8][9], by means of which good agreement with data can be obtained. This is in contrast with the situation in pionic atoms, since the relative small contribution of the s-wave part of the potential, together with a sizeable p-wave part, make this latter contribution quite important in the interpretation of the pionic atom data [26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Nonlocalities and Fermi motion corrections in K− atoms

et al. 2002

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We evaluate the p-wave K − N amplitudes from the chiral Lagrangians and from there construct the p-wave part of the K − nucleus optical potential plus a small s-wave part induced from the elementary p-wave amplitude and the nuclear Fermi motion. Simultaneously, the momentum and energy dependence of the s-wave optical potential, previously developed, are taken into account and shown to generate a small p-wave correction to the optical potential. All the corrections considered are small compared to the leading s-wave potential, and lead to changes in the shifts and widths which are smaller than the experimental errors. A thorough study of the threshold region and low densities is conducted, revealing mathematical problems for which a physical solution is given.

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Theory of kaonic atoms

Cited by 69 publications

References 39 publications

The properties of K̄ in the nuclear medium

The properties of K̄ in the nuclear medium

In-flight (K−,p) reactions for the formation of kaonic atoms and kaonic nuclei using the Green function method

Nonlocalities and Fermi motion corrections in K− atoms

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