Analysis of rho-omega interference in the pion form-factor

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dc.creatorMaltman, K.
dc.creatorO'Connell, H. B.
dc.creatorWilliams, A. G.
dc.date1996-01-23
dc.date1996-08-19
dc.date.accessioned2026-07-07T11:14:36Z
dc.date.available2026-07-07T11:14:36Z
dc.descriptionThe formalism underlying the analysis of e+e- -> pi+pi- in the rho-omega interference region is carefully revisited. We show that the standard neglect of the pure I=0 omega, omega_I, `direct'' coupling to pi-pi is not valid, and extract those combinations of the direct coupling and ρ-omega mixing allowed by experiment. The latter is shown to be only very weakly constrained by experiment, and we conclude that data from the e+e- -> pi+pi- interference region cannot be used to fix the value of rho-omega mixing in a model-independent way unless the errors on the experimental phase can be significantly reduced. Certain other modifications of the usual formalism necessitated by the unavoidable momentum-dependence of rho-omega mixing are also discussed.
dc.description15 pages of REVTEX, uses epsfig.sty with 1 figure. Entire manuscript available as a ps file at http://www.physics.adelaide.edu.au/theory/home.html or ftp://adelphi.adelaide.edu.au/pub/theory/ADP-95-50.T197.ps Minor changes to text and some equations for publication in Physics Letters B
dc.identifierhttps://arxiv.org/abs/hep-ph/9601309
dc.identifierhttp://arxiv.org/abs/hep-ph/9601309
dc.identifierPhys.Lett.B376:19-24,1996
dc.identifierdoi:10.1016/0370-2693(96)00293-6
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/192124
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleAnalysis of rho-omega interference in the pion form-factor
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