Residual interaction effects on deeply bound pionic states

Hirenzaki, S.; Kaneyasu, Hirono; Kume, K.; Toki, H.; Umemoto, Y.

doi:10.1103/physrevc.60.058202

Cited by 11 publications

(51 citation statements)

References 10 publications

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“…In this case with 207 Pb nuclei, the calculated shifts are reasonably smaller than the experimental errors and we think we can safely neglect the residual interaction effects as concluded in Ref. [14]. We show the calculated results in Table III for pionic atoms in 205 Pb with the experimental errors reported in Ref.…”

supporting

confidence: 71%

“…This is actually true for pionic atoms in 207 Pb case because experimental errors are significantly larger than the estimated residual interaction effects [14]. However, in the present cases for the 1s states in Sn isotopes, it is not obvious whether the effects are negligible because the experimental errors for Sn cases are comparable to the calculated residual interaction effects for 207 Pb [14]. Thus, it is very important to evaluate the residual interaction effects for 1s states in Sn isotopes to deduce physical quantities related to pion behaviors in the nuclear medium from the observed spectra.…”

mentioning

confidence: 91%

“…So far all theoretical calculations and analyses of the data, except for Ref. [14], postulate that the residual interaction effects are small enough and can be neglected. This is actually true for pionic atoms in 207 Pb case because experimental errors are significantly larger than the estimated residual interaction effects [14].…”

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confidence: 99%

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Residual interaction effects on deeply bound pionic states in Sn and Pb isotopes

Nose-Togawa¹,

Nagahiro²,

Hirenzaki

et al. 2005

Phys. Rev. C

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We have studied the residual interaction effects theoretically on the deeply bound pionic states in Pb and Sn isotopes. We need to evaluate the residual interaction effects carefully to deduce the nuclear medium effects for pion properties, which are believed to provide valuable information on nuclear chiral dynamics. The s-and p-wave πN interactions are used for the pion-nucleon residual interactions. We show that the complex energy shifts are around [(10-20) + i(2-7)] keV for 1s states in Sn, which should be taken into account in the analyses of the high precision data of deeply bound pionic 1s states in Sn isotopes./2 1.7 + 0.8i −6.0i J = 11/2 1.5 + 0.7i −5.1i J = 11/2 1.4 + 0.6i J = 13/2 −6.2 − 3.3i J = 13/2 −5.6 − 2.8i J = 13/2 −5.1 − 2.5i d −1 5/2 −15.1 J = 3/2 −7.6 − 2.6i −13.6 J = 3/2 −7.1 − 2.2i −12.2 J = 3/2 −6.5 − 1.9i −4.8i J = 5/2 1.0 + 0.6i −3.7i J = 5/2 0.9 + 0.4i −2.8i J = 5/2 0.8 + 0.3i J = 7/2 −5.0 − 1.7i J = 7/2 −4.6 − 1.4i J = 7/2 −4.3 − 1.2i

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supporting

confidence: 71%

mentioning

confidence: 91%

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Residual interaction effects on deeply bound pionic states in Sn and Pb isotopes

Nose-Togawa¹,

Nagahiro²,

Hirenzaki

et al. 2005

Phys. Rev. C

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“…We expect that this pionic state does not have additional shifts due to the effects of the residual interaction between neutron-hole and pionic states [12,13]. For the even-neutron nuclear target cases, we may have to take into account the residual interaction effects to deduce the binding energies of the pionic states precisely from the high-precision experimental data, since the final pionic states are pion-particle plus neutron-hole [π ⊗ n −1 ] states.…”

Section: (D 3 He) Spectra Of Pionic Atom Formation In Neutron-odd Numentioning

confidence: 99%

Formation of Deeply Bound Pionic Atoms and Pion Properties in Nuclei

Ikeno

Yamagata-Sekihara

Nagahiro

et al. 2017

Proceedings of the 14th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon (MENU2016)

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We report the recent theoretical studies for the formation of deeply bound pionic atoms. It is important to know the pion properties in nuclei since they are believed to provide valuable information on the aspects of the symmetry of strong interaction at finite density. In order to deduce precise information on the pion properties in nuclei from observables of the deeply bound pionic atom, we consider the pionic atom formation on the even-even and neutron-odd nucleus targets. Furthermore, we also calculate the formation spectra using the Green's function method. Theoretical results using the Green's function method will be necessary to investigate the high precision data which will be obtained in near future.

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“…In the (d, 3 He) reaction for the pionic atom formation on an even-neutron nuclear target, one neutron in the target nucleus is picked-up and removed from the nucleus. For the even-neutron nuclear target cases, since thenal pionic states are the pionparticle plus neutronhole [π ⊗ n −1 ] states, we will have to take into account the residual interaction eects [10,11] to deduce the pion nucleus interaction precisely from the high precision experimental data.…”

Section: Introductionmentioning

confidence: 99%

Formation of Deeply Bound Pionic Atoms and Pion Properties in Nuclei

et al. 2015

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We study theoretically the formation of deeply bound pionic atoms to deduce the pion properties in nuclei precisely from the observables. We show the theoretical formation spectra of deeply bound pionic atoms in the various cases. We consider the pionic atom formation on the eveneven and neutronodd nucleus targets. We also show the angular dependence of the formation spectra in the (d, 3 He) reactions. Based on these theoretical results, we have found that we can obtain the systematic information on several deeply bound states for various nuclei. Actually, these observations have been performed in the experiments at RIBF/RIKEN.

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Residual interaction effects on deeply bound pionic states

Cited by 11 publications

References 10 publications

Residual interaction effects on deeply bound pionic states in Sn and Pb isotopes

Residual interaction effects on deeply bound pionic states in Sn and Pb isotopes

Formation of Deeply Bound Pionic Atoms and Pion Properties in Nuclei

Formation of Deeply Bound Pionic Atoms and Pion Properties in Nuclei

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