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  1. No Access

    Article

    Evidence for pion-pion interactions froms-wave pion-nucleon scattering

    By fitting the s-wave partial amplitudes for π- -scattering, in an unphysical region, we have greatly extended the energy range over which we can examine the contribution from t...

    J. Hamilton, P. Menotti, T. D. Spearman, W. S. Woolcock in Il Nuovo Cimento (1955-1965) (1961)

  2. No Access

    Article

    Subtraction constants inπ-π→ dispersion relationdispersion relation

    P. Menotti in Il Nuovo Cimento (1955-1965) (1962)

  3. No Access

    Article

    Analysis ofS-matrix singularities by means of operator technique

    The problem of determining the singularities of theS-matrix for a given angular momentum in thek-plane, is reduced to an eigenvalue problem for compact operators. In particular we examine the dependence of the po...

    M. Ciafaloni, P. Menotti in Il Nuovo Cimento (1955-1965) (1965)

  4. No Access

    Article

    Properties of relativistic bound states

    In this paper we examine some properties of two-boson bound states for very high binding energy in the Bethe-Salpeter framework. We point out the relativistic nature of the high binding energy limit and we giv...

    M. Ciafaloni, P. Menotti in Il Nuovo Cimento A (1965-1970) (1966)

  5. No Access

    Article

    Retardation effects and gauge transformations in the Bethe-Salpeter equations

    The ladder Bethe-Salpeter equation with Feynman propagators gives rise to spurious corrections of orderv/c to the nonrelativistic limit. The exact cancellation of these retardation effects by the introduction of ...

    R. Barbieri, M. Ciafaloni, P. Menotti in Il Nuovo Cimento A (1965-1970) (1968)

  6. No Access

    Article

    Regge families in the wick-cutkosky model. Extension of previous results

    R. Gatto, P. Menotti in Lettere al Nuovo Cimento (1969-1970) (1969)

  7. No Access

    Article

    Regge families in the Wick-Cutkosky model

    The bound solutions of the Wick-Cutkosky model are analytically continued to the whole complexl-plane by means of a method utilizing a Volterra integral equation equivalent to the Cutkosky differential equation. ...

    R. Gatto, P. Menotti in Il Nuovo Cimento A (1965-1970) (1970)

  8. No Access

    Article

    Commutators near the light cone, bjorken limits andO 4 expansion. Study of ladder models

    A method based onO 4 expansion of thet=0 Compton amplitude is developed to discuss the light-cone behaviour of the matrix element of a current commutator. The behaviour of theO 4 partial waves at small distances ...

    R. Gatto, P. Menotti in Il Nuovo Cimento A (1965-1970) (1971)

  9. No Access

    Article

    Commutators near the light-cone

    A concrete dynamical model is studied to obtain information on scaling and related problems. The role ofO 4 expansion is pointed out, and the relation of scaling to small-distance behaviour of interactions is mad...

    R. Gatto, P. Menotti in Il Nuovo Cimento A (1971-1996) (1972)

  10. No Access

    Article

    Continuation from deep electroproduction to deep electron-positron annihilation

    R. Gatto, P. Menotti, I. Vendramin in Lettere al Nuovo Cimento (1971-1985) (1972)

  11. No Access

    Article

    General threshold relation between deep inelastic electron scattering and deep inelastic electron-positron annihilation

    R. Gatto, P. Menotti, I. Vendramin in Lettere al Nuovo Cimento (1971-1985) (1972)

  12. No Access

    Article

    Light-cone dominance of vertex functions for composite fields and asymptotic behaviour of elastic form factors

    M. Ciafaloni, P. Menotti in Lettere al Nuovo Cimento (1971-1985) (1973)

  13. No Access

    Article

    Vertex functions and form factors for conformal spin-1/2 systems

    Conformal on-shell wave functions are derived for spin-1/2 particle decaying virtually in spin 0 and spin 1/2. The relation to the off-shell vertex function is worked out and it is shown that shadow singularit...

    P. Menotti, M. C. Prati in Il Nuovo Cimento A (1965-1970) (1977)

  14. No Access

    Article

    The radial gauge propagator

    We solve the Green’s function equation for a gauge field both in presence of the sharp gauge fixingx·A=0 and with the gauge-fixing term (x·A)2/2β. The ensuing propagators are symmetric in the field arguments.

    P. Menotti, D. Seminara in Il Nuovo Cimento A (1971-1996) (1993)