Vector-Meson Electroproduction from Generalized Vector Dominance

Including destructively interfering off-diagonal transitions of diffraction-dissociation type, we arrive at a formulation of GVD for exclusive vector-meson production in terms of a continuous spectral representation of dipole form. The transverse cross-section sigma_T for gamma* p -> V p behaves...

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Detalles Bibliográficos
Autores principales: Schildknecht, Dieter, Schuler, Gerhard A., Surrow, Bernd
Lenguaje:eng
Publicado: 1998
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(99)00052-0
http://cds.cern.ch/record/368214
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author Schildknecht, Dieter
Schuler, Gerhard A.
Surrow, Bernd
author_facet Schildknecht, Dieter
Schuler, Gerhard A.
Surrow, Bernd
author_sort Schildknecht, Dieter
collection CERN
description Including destructively interfering off-diagonal transitions of diffraction-dissociation type, we arrive at a formulation of GVD for exclusive vector-meson production in terms of a continuous spectral representation of dipole form. The transverse cross-section sigma_T for gamma* p -> V p behaves asymptotically as 1/Q^4, while R_V = sigma_L/sigma_T becomes asymptotically constant. Contributions violating s-channel helicity conservation stay at the 10-15% level established in low-energy photoproduction and diffractive hadron--hadron interactions. The data for phi- and rho-meson production for 0 predictions.
id cern-368214
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1998
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spelling cern-3682142019-09-30T06:29:59Zdoi:10.1016/S0370-2693(99)00052-0http://cds.cern.ch/record/368214engSchildknecht, DieterSchuler, Gerhard A.Surrow, BerndVector-Meson Electroproduction from Generalized Vector DominanceParticle Physics - PhenomenologyIncluding destructively interfering off-diagonal transitions of diffraction-dissociation type, we arrive at a formulation of GVD for exclusive vector-meson production in terms of a continuous spectral representation of dipole form. The transverse cross-section sigma_T for gamma* p -> V p behaves asymptotically as 1/Q^4, while R_V = sigma_L/sigma_T becomes asymptotically constant. Contributions violating s-channel helicity conservation stay at the 10-15% level established in low-energy photoproduction and diffractive hadron--hadron interactions. The data for phi- and rho-meson production for 0 predictions.Including destructively interfering off-diagonal transitions of diffraction-dissociation type, we arrive at a formulation of GVD for exclusive vector-meson production in terms of a continuous spectral representation of dipole form. The transverse cross-section sigma_T for gamma* p -> V p behaves asymptotically as 1/Q^4, while R_V = sigma_L/sigma_T becomes asymptotically constant. Contributions violating s-channel helicity conservation stay at the 10-15% level established in low-energy photoproduction and diffractive hadron--hadron interactions. The data for phi- and rho-meson production for 0 \lsim Q^2 \lsim 20 GeV^2 from HERA are found to be in agreement with these predictions.Including destructively interfering off-diagonal transitions of diffraction-dissociation type, we arrive at a formulation of GVD for exclusive vector-meson production in terms of a continuous spectral representation of dipole form. The transverse cross-section, σ T ,γ ∗ p →V p , behaves asymptotically as 1/ Q 4 , while R V ≡σ L ,γ ∗ p →V p /σ T ,γ ∗ p →V p becomes asymptotically constant. Contributions violating s -channel helicity conservation stay at the level established in low-energy photoproduction and diffractive hadron–hadron interactions. The data on ρ 0 -meson production from the Fermilab E665 Collaboration and on φ - and ρ 0 -meson production from HERA are found to be in agreement with these predictions.hep-ph/9810370CERN-TH-98-294CERN-TH-98-294oai:cds.cern.ch:3682141998-10-16
spellingShingle Particle Physics - Phenomenology
Schildknecht, Dieter
Schuler, Gerhard A.
Surrow, Bernd
Vector-Meson Electroproduction from Generalized Vector Dominance
title Vector-Meson Electroproduction from Generalized Vector Dominance
title_full Vector-Meson Electroproduction from Generalized Vector Dominance
title_fullStr Vector-Meson Electroproduction from Generalized Vector Dominance
title_full_unstemmed Vector-Meson Electroproduction from Generalized Vector Dominance
title_short Vector-Meson Electroproduction from Generalized Vector Dominance
title_sort vector-meson electroproduction from generalized vector dominance
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/S0370-2693(99)00052-0
http://cds.cern.ch/record/368214
work_keys_str_mv AT schildknechtdieter vectormesonelectroproductionfromgeneralizedvectordominance
AT schulergerharda vectormesonelectroproductionfromgeneralizedvectordominance
AT surrowbernd vectormesonelectroproductionfromgeneralizedvectordominance

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