Frame Dependence of Vector Dominance in the Veneziano Model and a New Test of <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>ρ</mi></math></span> Universality

A. P. Contogouris; R. Gaskell; M. Svec

doi:10.1103/PhysRevD.3.145

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Frame Dependence of Vector Dominance in the Veneziano Model and a New Test of $ρ$ Universality

A. P. Contogouris^*

R. Gaskell and M. Svec^†

Institute of Theoretical Physics, McGill University, Montreal, Canada
CERN, Geneva, Switzerland

Institute of Theoretical Physics, McGill University, Montreal, Canada

^*Present address.
^†On leave of absence from Department of Physics, Charles University, Prague.

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Phys. Rev. D 3, 145 – Published 1 January, 1971

DOI: https://doi.org/10.1103/PhysRevD.3.145

Abstract

Certain frame-dependent predictions of vector dominance are studied in terms of simple, parameter-free Veneziano models. It is shown that the transverse helicity-frame differential cross section for $π^{-} p \to ρ^{0} n$ has a sharp forward peak, in accord with recent experiments. Within our approach (which is more general than the Veneziano one) this peak is shown to provide a new test and verification of $ρ$ universality. The ratio $\frac{ρ_{1 - 1}}{ρ_{11}}$ of $π^{-} p \to ρ^{0} n$ density-matrix elements is also discussed.

References (12)

J. T. Donohue and H. Högaasen, Phys. Letters 25B, 554 (1967)
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Y. Avni and H. Harari, Phys. Rev. Letters 23, 262 (1969)
Omitted endnote
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[c1] J. T. Donohue and H. Högaasen, Phys. Letters 25B, 554 (1967)

[c2] J. Scharenguivel et al., Phys. Rev. Letters 24, 332 (1970)

[c3] B. Diu and M. Le Bellac, Nuovo Cimento 53A, 158 (1968)

[c4] Y. Avni and H. Harari, Phys. Rev. Letters 23, 262 (1969)

[c5] Omitted endnote

[c6] C. Cho and J. Sakurai, Phys. Letters 30B, 119 (1969)

[c7] D. Horn and M. Jacob, Nuovo Cimento 56A, 63 (1968)

[c8] J. D. Jackson and C. Quigg, Phys. Letters 29B, 236 (1969)

[c9] E. Argyres, A. P. Contogouris, C. S. Lam, and S. Ray (unpublished) M. Ahmad, Fayyazuddin, and Riazuddin, Phys. Rev. Letters 23, 504 (1969)

[c10] G. F. Chew, M. Goldberger, F. E. Low, and Y. Nambu, Phys. Rev. 106, 1345 (1957)

[c11] ([6]) R. Diebold and J. Poirier, Phys. Rev. Letters 22, 255 (1969)

[c12] M. Le Bellac and G. Plaut, Nuovo Cimento 54A, 97 (1969) W. T. Potter and J. D. Sullivan, University of Illinois report, 1969 (unpublished) J. P. Ader, M. Capdeville, and Ph. Salin, Nucl. Phys. B17, 221 (1970)

Physical Review D

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Frame Dependence of Vector Dominance in the Veneziano Model and a New Test of $ρ$ Universality

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Frame Dependence of Vector Dominance in the Veneziano Model and a New Test of ρ Universality

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References (12)

Frame Dependence of Vector Dominance in the Veneziano Model and a New Test of $ρ$ Universality