ρ<i>-</i>ω mixing in nuclear charge asymmetry

Coon, S. A.; Barrett, R. C.

doi:10.1103/physrevc.36.2189

Cited by 123 publications

(171 citation statements)

References 45 publications

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“…as found [1] from the observed [2] isospin violating (∆I = 1) decay ω → π + π − , which underlies the dominant charge-symmetry-violating (CSV) nucleon-nucleon interaction of refs. [3,4].…”

Section: Introductionmentioning

confidence: 73%

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Vector meson dominance and ρ-ω mixing

Coon

Scadron

1998

Phys. Rev. C

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The scale of a phenomenologically successful charge-symmetry-violating nucleon-nucleon interaction, that attributed to meson exchange with a ∆I = 1 rho-omega transition, is set by the Coleman-Glashow SU (2) breaking tadpole mechanism. A single tadpole scale has been obtained from symmetry arguments, electromagnetic meson and baryon measured mass splittings, and the observed isospin violating (∆I = 1) decay ω → π + π − . The hadronic realization of this tadpole mechanism lies in the I = 1 a 0 scalar meson. We show that measured hadronic and two-photon widths of the a 0 meson, with the aid of the Vector Meson Dominance model, recover the universal Coleman-Glashow tadpole scale.

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Section: Introductionmentioning

confidence: 73%

“…One element of this universality is the value of the effective em ρ • −ω transition found [1] from the observed [2] isospin violating (∆I = 1) decay ω → π + π − .…”

Section: Discussionmentioning

confidence: 99%

Vector meson dominance and ρ-ω mixing

Coon

Scadron

1998

Phys. Rev. C

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“…(6) in our calculation of the NN-interaction. A comparison of the definition [3] of the mixing amplitude ω|H|ρ 0 with the usual Feyman rules shows that this is identical with the ρω mixing self-energy Π(q 2 ), i.e., ω|H|ρ 0 ≡ Π(q 2 ).…”

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confidence: 99%

“…These phenomena include: (i) differences between pp and nn scattering lengths and effective range parameters, (ii) binding energy difference of 3 H and 3 He, (iii) analyzing power difference in n-p elastic scattering, and (iv) the Nolen-Schiffer anomaly. In the one-boson exchange model of the nucleon-nucleon interaction the ρ 0 -ω potential is generated by ρ 0 -ω mixing in the intermediate vectormeson propagators [3]. Another source of CSB arising from meson mixing is that from π 0 -η mixing, but this is typically much less important than that due to the ρ 0 and ω.…”

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confidence: 99%

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Charge-symmetry breaking, rho-omega mixing, and the quark propagator

1993

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The momentum-dependence of the ρ 0 -ω mixing contribution to chargesymmetry breaking (CSB) in the nucleon-nucleon interaction is compared in a variety of models. We focus in particular on the role that the structure of the quark propagator plays in the predicted behaviour of the ρ 0 -ω mixing amplitude. We present new results for a confining (entire) quark propagator and for typical propagators arising from explicit numerical solutions of quark Dyson-Schwinger equations. We compare these to hadronic and free quark calculations. The implications for our current understanding of CSB experiments is discussed.

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The Meson Theory of Nuclear Forces and Nuclear Structure

Machleidt

1989

Advances in Nuclear Physics

1,395

1,873

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After a historical review, I present the progress in the field of realistic NN potentials that we have seen in recent years. A new generation of very quantitative (high-quality/high-precision) NN potentials has emerged. These potentials will serve as reliable input for microscopic nuclear structure calculations and will allow for a systematic investigation of off-shell effects. The issue of three-nucleon forces is also discussed.

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ρ-ω mixing in nuclear charge asymmetry

Cited by 123 publications

References 45 publications

Vector meson dominance and ρ-ω mixing

Vector meson dominance and ρ-ω mixing

Charge-symmetry breaking, rho-omega mixing, and the quark propagator

The Meson Theory of Nuclear Forces and Nuclear Structure

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