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Title of Journal: Nuov Cim A

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Abbravation: Il Nuovo Cimento A (1965-1970)

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Società Italiana di Fisica

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DOI

10.1002/chin.199828034

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1826-9869

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Nuclear models and the hypernuclear interaction

Authors: G Preparata P G Ratcliffe
Publish Date: 2008/01/30
Volume: 106, Issue: 5, Pages: 685-690
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Abstract

We present a first calculation of the potential and spinorbit coupling for hypernuclei in the framework of a nuclearpotential model based on a spontaneous collective superradiant pionnucleondelta interaction A perturbative evaluation of the propagation of a hyperon in such a coherent medium leads to an effective hypernuclear potential of the same shape and roughly half the depth ie∼30 MeV of the standard nuclear potential and a negligible spinorbit coupling for both Λ and Σ hypernuclei Such results are in complete agreement with existing experimental data Moreover in this framework we are able to explain the surprisingly narrow decay widths of the Σ hypernuclei

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Other Papers In This Journal:
  1. Second-order phase transitions in three dimensions
  2. Projector in constrained quantum dynamics
  3. Pion inclusive distribution at cosmic-ray energies and comparison with ISR data
  4. Analysis of the reaction π + p → ρ 0 Δ ++ at 11.7 GeV/c incident momentum
  5. Primakoff effect and π 0 lifetime
  6. Computation of forward pp dispersion relations
  7. A new approach to heavy-ion fusion
  8. A measurement of the magnetic moment of the Σ + -hyperon
  9. Elastic and inelastic scattering of 0.8 GeV polarized protons from 18 O
  10. Surface waves in pion-proton elastic scattering
  11. A study of two-pion exchange contributions to quasi-elastic scattering at high energies
  12. Discrimination between the standard theory of electroweak interactions and its extensions
  13. Coloured supersymmetry
  14. Three generations and a large top-quark mass
  15. Doppler shift attenuation measurements on 57 Fe and 57 Co
  16. Charge radii of nucleons
  17. Regge poles with kinematic cuts in pion photoproduction
  18. Existence of solutions of partial-wave dispersion relations and singular N/D equations
  19. SU 9 «composite» symmetry and weak interactions
  20. Small-angle scattering and absorption of 3.0 GeV/c antiprotons in nuclear emulsion
  21. The spectrum of b $$\bar c$$ , t $$\bar c$$ and t $$\bar b$$ ; bound states in the two-step potential model
  22. The sequential light-particle emission in peripheral heavy-ion collisions. A theoretical approach
  23. Energy gain of spherical shell targets ablatively imploded by thermal radiation
  24. Finite-energy sum rules on hyperbolas. — II
  25. K X-ray spectrum of Na excited by photons
  26. Singular-value decomposition of the nucleon-nucleon reactance matrix
  27. Inelastic π - 3 He interaction at 180 MeV 3 He interaction at 180 MeV
  28. Mechanism of particle production in nucleon-nucleon interactions at very high energies
  29. 852 keV first-forbidden beta transition in 115 Cd g
  30. Natural orbital calculations of nucleon momentum distributions
  31. A redefinition of quantum-mechanical exchange and Coulomb integrals by a reinterpretation of atomic and molecular orbitals as Taylor expansions of a potential and a similar treatment of the electromagnetic field.
  32. Two-variable crossing-symmetric expansion of the ππ scattering amplitude and low-energy parameter sum rules
  33. Reduction of complex electromagnetic fields to the irreducible representations of the inhomogeneous Lorentz group
  34. Investigation of the 149 Sm (n, α) 146 Nd reaction induced by fast neutrons
  35. Conformal covariance of Dirac-Maxwell and ’t Hooft-Polyakov monopole theories
  36. The $$\bar K$$ N system near thresholdsystem near thresholdСистема $$\bar K$$ N вблиэи порогавблиэи порога
  37. Changes in the Annihilation’s delay time distribution of stopped antiprotons in helium gas, due to contaminants.—I
  38. An enlarged superfluid model of atomic nucleus
  39. The pion decay constant as a scale for hadron dynamics
  40. Absorption corrections for the double peripheral model
  41. The 12 C+ 12 C→α+ 20 Ne reaction mechanism and angular-momentum effects
  42. Multiple-quark-scattering analysis of hadron charge-exchange scattering
  43. Polarization of $$\Sigma ^ + and \bar \Sigma ^ - $$ hyperons produced in high-energy proton-nucleus collisionshyperons produced in high-energy proton-nucleus collisions
  44. Heavy-ion reactions with nucleon transfer
  45. Vertex functions and form factors for conformal spin-1/2 systems
  46. Baryon properties in chiral models
  47. A χ 2 -test to study the α 1 , α 2 , α 3 convergence for high-precision LEP data, having in mind the SUSY threshold
  48. A study of the low-mass part of the (Kππ) system in the reaction K − p→K − pπ + π − at 8.25 GeV/c
  49. A homological approach to parametric Feynman integrals
  50. Once more on the role of the bound-state wave function in the leptonic decays of light hadrons
  51. Dynamical fission and transitional mechanisms in medium-mass heavy-ion reactions
  52. Non-regge and hyper-regge effects in pion-nucleon charge exchange scattering at high energies
  53. Direct reconstruction of the pp scattering matrix below 500 MeV, an attempt
  54. Alternative interaction between spinor and Yang-Mills fields
  55. The proton leading-particle spectrum at accelerator energies
  56. Multiple pion production associated with % MathType!MTEF!2!1!+- % feaafiart1ev1aaatuuDJXwAK1uy0Hwmaerbfv3ySLgzG0uy0Hgip5 % wzamXvP5wqonvsaeHbfv3ySLgzaeXafv3ySLgzGmvETj2BSbWexLMB % bXgBcf2CPn2qVrwzqf2zLnharCWqVvNCPvMCG4uz3bqehqvATv2CG4 % uz3bIuV1wyUbqeeuuDJXwAKbsr4rNCHbGeaGqiVu0Je9sqqrpepC0x % bbL8F4rqqrFfpiZxe9LqFHe9Lqpepeea0xd9q8as0-LqLs-Jirpepe % ea0-as0Fb9pgea0lrP0xe9Fve9Fve9qapdbiGaaiGadiWacmaaceGa % aqaafaGbaaGcbaacfaGab83sayaaraWaaWbaaSqabeaacaWFWaaaaa % aa!4CBE! $$ \bar K^0 $$ in the 12.6 GeV/c K−p reaction0 in the 12.6 GeV/c K−p reactionМножественное рождение пионов, свяэанное с % MathType!MTEF!2!1!+- % feaafiart1ev1aaatuuDJXwAK1uy0Hwmaerbfv3ySLgzG0uy0Hgip5 % wzamXvP5wqonvsaeHbfv3ySLgzaeXafv3ySLgzGmvETj2BSbWexLMB % bXgBcf2CPn2qVrwzqf2zLnharCWqVvNCPvMCG4uz3bqehqvATv2CG4 % uz3bIuV1wyUbqeeuuDJXwAKbsr4rNCHbGeaGqiVu0Je9sqqrpepC0x % bbL8F4rqqrFfpiZxe9LqFHe9Lqpepeea0xd9q8as0-LqLs-Jirpepe % ea0-as0Fb9pgea0lrP0xe9Fve9Fve9qapdbiGaaiGadiWacmaaceGa % aqaafaGbaaGcbaacfaGab83sayaaraWaaWbaaSqabeaacaWFWaaaaa % aa!4CBE! $$ \bar K^0 $$ в реакции K−p при 12.6 ГэВ/с0 в реакции K−p при 12.6 ГэВ/с
  57. Lifetime of the ∑ − -hyperon
  58. A new approach to conformal invariant field theories
  59. Effective trajectories in the presence of Regge cuts
  60. π—-p interactions at 650 MeV
  61. Composite gauge fields from nonlinear realizations
  62. Approximate saturation of the algebra of axial currents
  63. A general treatment of current algebra
  64. Piecewise analyticity of S -matrix elements and nonlocal interactions
  65. The deck model for nucleon diffraction dissociation at very high energies
  66. Deformation and interaction energies in statistical multifragmentation
  67. Strings and fields
  68. Bound states of the two-dimensional O N model at finite temperatures
  69. Charm and beauty hadroproduction models: QGSM vs. lund
  70. On the pionic production of the eta meson
  71. Off-energy-shell phase shifts in potential scattering
  72. A boundary-condition model for the P 33 pion-nucleon state
  73. O 4 invariance of a Bethe-Salpeter equation
  74. Tests for general models of deep inelastic lepton scattering
  75. Dual model with second-sheet resonances for pion-nucleon scattering
  76. Evidences for associated heat generation and nuclear products release in palladium heavy-water electrolysis
  77. Nonstatistical structures in 12 C( 14 N, 4 He) 22 Na reaction
  78. On some properties of the multi-particle amplitude expressed as a function of group-theoretical variables
  79. Fully-symmetric dual models and Lorentz invariance
  80. A temporarily free SU 6 gauge field theory model for strong interactions
  81. Inclusive and exclusive cross-sections in K − p interactions at 14.3 GeV/c
  82. Parafermion representations of the lie-algebra chain O 7 ⊃ G 2 ⊃ SU 3
  83. An alternative way to the direct product of groups
  84. Direct-channel fermion Regge poles
  85. A gravitational Lagrangian and some identities in the Newman-Penrose formalism
  86. Remarks on Poincaré generators, unitary transformations and helicity representations
  87. Fundamental coupling for weak interactions and masses
  88. Analogue-to-antianalogue M 1 transitions in odd Cu isotopes
  89. Distribution of transverse and longitudinal momentum in π−p interactions at 7.0 GeV/c
  90. Structure equations for a monopole model with a coleman-weinberg potential
  91. Surface description of QCD with fermionic quark boundaries
  92. Light-fragment production in p-nucleus interactions at 600 MeV. Astrophysical application
  93. Circular photon polarization detection by pair production
  94. On renormalization-invariant masses
  95. Field equations and action from centrally charged N =4 super yang-mills
  96. Feynman diagrams for unitary representations of SL 2, C
  97. SLAC measurements of the neutron spin-structure function
  98. Charge symmetry and neutral current in a unified model of weak and electromagnetic interactions
  99. Inclusive and semi-inclusive two-pion correlations in pp collisions at 69 GeV/c
  100. Electron form factors up to fourth order. - I
  101. On deusons or deuteronlike meson-meson bound states
  102. On the alternative interpretation of the aharonov-bohm effect
  103. Scalar densities and mesons
  104. The reaction $$\bar p$$ p → $$\bar p$$ pπ+π−π0 at 5.7 GeV/c and a pω0 ( $$\bar p$$ ω0) enhancement at 1.81 GeVРеакция $$\bar p$$ p → $$\bar p$$ pπ+π−π0 при 5.7 ГзВ/с и увеличение pω0 ( $$\bar p$$ ω0) при 1.81 ГзВ
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  106. Semi-relativistic equation for quark-antiquark systems
  107. Continuum shell model calculations and the resonances below the GDR in 12 C
  108. Gross features of pionization and fragmentation
  109. $${\mathcal{N}}\overline {\mathcal{N}}$$ annihilation at rest in the statistical bootstrap modelannihilation at rest in the statistical bootstrap model $${\mathcal{N}}\overline {\mathcal{N}}$$ аннигиляция в покое в рамках статистической модели бутстрапааннигиляция в покое в рамках статистической модели бутстрапа
  110. Some remarks on charges and their conservation in a classical SU 2 yang-mills theory
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