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Morris, Christopher; Boyer, K.; Moore, C. Fred; Harvey, Carol J.; Kallianpur, Kalpana J.; Moore, I. B.; Seidl, P.A.; Seestrom-Morris, S. J.; Holtkamp, D. B.; Greene, S. J.; Cottingame, W. B.

doi:10.1103/physrevc.24.231

Cited by 26 publications

(5 citation statements)

References 24 publications

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“…where N is the total number of the experimental points, σ th (θ i ) is the predicted differential cross section at angle θ i and σ exp (θ i ) and ∆σ exp (θ i ) are the experimental cross section and its associated error, respectively, where relative errors of 10% [16]- [18] were taken for computing χ 2 .…”

Section: The Folding Modelmentioning

confidence: 99%

Cluster Model Analysis of Kaon Scattering from 12C

Ebrahim

2012

Braz J Phys

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Angular distributions of differential cross sections for the interaction of K + mesons with 12 C nucleus at beam momenta of 635, 715, and 800 MeV/c have been analyzed using 3α-particle model of 12 C. Differential cross sections for inelastic transitions to the (2 + ; 4.44 MeV) and (3 − ; 9.64 MeV) states in 12 C are calculated, and deformation lengths δ 2 and δ 3 are extracted and consistent with other works. Good agreement with experimental data of elastic and inelastic K ± -12 C scattering is obtained. IntroductionThe K + nucleus scattering is of considerable interest because of relative weak kaon nucleon (KN) interaction. K + -nucleus cross sections should be fairly weak and the amplitudes reasonably simple because of the simplicity of K + N system. The K + -nucleus interaction is the weakest of any strongly interacting probe, and the resulting mean free path is expected to be large (in the order of 7 fm). Therefore, K + can penetrate quite freely into the central region of the target nucleus, having time to undergo predominantly single K + N collisions and appearing to be a good probe for the distribution of neutrons in nuclei, while electron scattering is applied to study the nuclear charge density. There is no true absorption of K + to complicate things, in distinction to the case of low energy π-nucleus scattering, where the mean free path is also large. Another difference is that K + wave lengths are small enough to sense individual nucleons within nuclei, where λ=2 fm for 50 MeV pion kentic energy while λ=0.5 fm for 715 MeV/c kaon lab momentum [1].On the contrary, the K − N system has many narrow resonances and there are open channels down to the K − N threshold. Cross sections are comparable to those for NN scattering. Therefore, we expect that K − -nucleus cross sections reflect these features: The interaction is strong and the amplitudes are expected to be complicated [2].Recently, coupled-channels calculations for elastic and inelastic scattering of K + at

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Section: The Folding Modelmentioning

confidence: 99%

Cluster Model Analysis of Kaon Scattering from 12C

Ebrahim

2012

Braz J Phys

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“…[11]) have also been experimentally tested. Deformation lengths in inelastic scattering were extracted from experimental data [lengths for (2 + ; 4.44 MeV) and (3 − ; 9.64 MeV) states of 12 C [20], etc.]. These characteristics confirm perspectives of the study on pion-nucleus interaction (reactions), when electromagnetic measurements do not exist.…”

Section: Introductionmentioning

confidence: 99%

“…The experimental measurements have been performed at CERN Synchro-cyclotron [5], in M 13 pion channel using the quadrupole-quadrupole-dipole pion spectrometer at TRIUMF (Vancouver) [6] (for example, see a detailed description of the channel and the spectrometer in Refs. [7,8]), at 7 GeV proton synchrotron NIMROD at Rutherford Laboratory [9], in pion channel and spectrometer (EPICS) at Clinton P. Anderson Meson Physics Facility (LAMPF, Los Alamos) [9][10][11][12], at pion spectrometer facility at Swiss Institute for Nuclear Research (SIN, Switzerland) [13,14]. Experimental program (for wide range of experiments) has been proposed at SIN to study the pion-nucleus interactions in systematic way (see Ref.…”

Section: Introductionmentioning

confidence: 99%

“…[15] for details). Until now, we have experimental data of cross-sections for 6,7 Li, 9 Be, 12 C, 16 O, 28 Si, 32,34 S, 40,42,44,48 Ca, 54 Fe, 90 Zr, 208 Pb, etc. at the incident pion energy T π from 30 MeV up to 860 MeV [5,6,[9][10][11][12][13][14]16].…”

Section: Introductionmentioning

confidence: 99%

“…Optical model [6,10,14,[17][18][19], α-cluster model [20], DWIA collective model [11,12,14,16], microscopical form-factor model [11] have been used to analyze (and predict in some cases) total and differential cross section measurements. The parameters in pion-nucleus interaction in these models were determined by fitting procedures.…”

Section: Introductionmentioning

confidence: 99%

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Manifestation of the important role of nuclear forces in the emission of photons in pion scattering off nuclei

Maydanyuk¹,

Zhang²,

Zou³

2018

Phys. Rev. C

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Bremsstrahlung of photons emitted during the scattering of π + -mesons off nuclei is studied for the first time. Role of interactions between π + -mesons and nuclei in the formation of the bremsstrahlung emission is analyzed in details. We discover essential contribution of emitted photons from nuclear part of Johnson-Satchler potential to the full spectrum, in contrast to the optical Woods-Saxon potential. We observe unusual essential influence of the nuclear part of both potentials on the spectrum at high photon energies. This phenomenon opens a new experimental way to study and check non-Coulomb and nuclear interactions between pions and nuclei via measurements of the emitted photons. We provide predictions of the bremsstrahlung spectra for pion scattering off 44 Ca.

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Evidence for Δ-h Components from Pion Reactions

Morris

1984

Spin Excitations in Nuclei

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Pion inelastic scattering to low-lying states inC12andCa

Cited by 26 publications

References 24 publications

Cluster Model Analysis of Kaon Scattering from 12C

Cluster Model Analysis of Kaon Scattering from 12C

Manifestation of the important role of nuclear forces in the emission of photons in pion scattering off nuclei

Evidence for Δ-h Components from Pion Reactions

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