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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

10.1006/dbio.1997.8779

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1826-9869

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Fullysymmetric dual models and Lorentz invariance

Authors: R Musto F Nicodemi M L Paciello B Taglienti
Publish Date: 2008/02/21
Volume: 7, Issue: 2, Pages: 407-416
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Abstract

The purpose of this paper is to clarify the origin of the projective invariance in dualresonance models in terms of the Lorentz group We find that the assignment of external particles to irreducible representations ofSL2C and the requirement that this group be an invariant group of the amplitude together with some physical requirements lead to the fully symmetric model proposed by Shapiro and Virasoro Only the value α0=2 for the trajectory intercept is possibleLo scopo di questo lavoro è di indagare lorigine dellinvarianza proiettiva nei modelli duali in termini del gruppo di Lorentz Noi troviamo che la richiesta che il gruppoSL2C che classifica gli stati sia in gruppo di invarianza per lampiezza insieme ad altre richieste fisiche porta al modello completamente simmetrico proposto da ShapiroVirasoro Il solo valore permesso per lintercetta della traiettoria è α0=2

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  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
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  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
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  39. The pion decay constant as a scale for hadron dynamics
  40. Absorption corrections for the double peripheral model
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  53. Non-regge and hyper-regge effects in pion-nucleon charge exchange scattering at high energies
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  58. Lifetime of the ∑ − -hyperon
  59. A new approach to conformal invariant field theories
  60. Effective trajectories in the presence of Regge cuts
  61. π—-p interactions at 650 MeV
  62. Composite gauge fields from nonlinear realizations
  63. Approximate saturation of the algebra of axial currents
  64. A general treatment of current algebra
  65. Piecewise analyticity of S -matrix elements and nonlocal interactions
  66. The deck model for nucleon diffraction dissociation at very high energies
  67. Deformation and interaction energies in statistical multifragmentation
  68. Strings and fields
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  75. Tests for general models of deep inelastic lepton scattering
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  78. Nonstatistical structures in 12 C( 14 N, 4 He) 22 Na reaction
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  81. Inclusive and exclusive cross-sections in K − p interactions at 14.3 GeV/c
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  97. SLAC measurements of the neutron spin-structure function
  98. Charge symmetry and neutral current in a unified model of weak and electromagnetic interactions
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  100. Electron form factors up to fourth order. - I
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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
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