Vector meson production at low x from gauge/gravity duality
Vector meson production at low x from gauge/gravity duality
We use gauge/gravity duality to study vector meson (J/?, ? 0 , ?, ?) production in electron-proton scattering, in the limit of high center of mass energy at fixed momentum transfer, corresponding to the limit of low Bjorken x, where the process is dominated by pomeron exchange. Our approach considers the pomeron at strong coupling, described by the graviton Regge trajectory in AdS space with a hard-wall to mimic confinement effects. Both the proton and vector mesons are described by simple holographic wave functions in AdS. This model agrees with HERA H1 data with a ? 2 per degree of freedom below one on total cross-sections, and below two on differential cross-sections, confirming the success of previous studies that model low x DIS and DVCS using gauge/gravity duality.
gauge-gravity correspondence, AdS-CFT correspondence, phenomenological models, QCD
1-18
Costa, Miguel S.
26184bfe-9dd1-456e-8b8e-bfeb052b3959
Djurić, Marko
66c92243-ba5f-4774-aee7-3c3fac832065
Evans, Nick
4994f4ea-cf3d-4aba-b9f8-fe2458f3e652
17 September 2013
Costa, Miguel S.
26184bfe-9dd1-456e-8b8e-bfeb052b3959
Djurić, Marko
66c92243-ba5f-4774-aee7-3c3fac832065
Evans, Nick
4994f4ea-cf3d-4aba-b9f8-fe2458f3e652
Costa, Miguel S., Djurić, Marko and Evans, Nick
(2013)
Vector meson production at low x from gauge/gravity duality.
Journal of High Energy Physics, 2013 (84), .
(doi:10.1007/JHEP09(2013)084).
Abstract
We use gauge/gravity duality to study vector meson (J/?, ? 0 , ?, ?) production in electron-proton scattering, in the limit of high center of mass energy at fixed momentum transfer, corresponding to the limit of low Bjorken x, where the process is dominated by pomeron exchange. Our approach considers the pomeron at strong coupling, described by the graviton Regge trajectory in AdS space with a hard-wall to mimic confinement effects. Both the proton and vector mesons are described by simple holographic wave functions in AdS. This model agrees with HERA H1 data with a ? 2 per degree of freedom below one on total cross-sections, and below two on differential cross-sections, confirming the success of previous studies that model low x DIS and DVCS using gauge/gravity duality.
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More information
Published date: 17 September 2013
Keywords:
gauge-gravity correspondence, AdS-CFT correspondence, phenomenological models, QCD
Organisations:
Chemistry
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Local EPrints ID: 368044
URI: http://eprints.soton.ac.uk/id/eprint/368044
PURE UUID: 4a87e522-608e-4ad1-8b4f-f2d173b2157f
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Date deposited: 14 Aug 2014 10:42
Last modified: 14 Mar 2024 17:41
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Author:
Miguel S. Costa
Author:
Marko Djurić
Author:
Nick Evans
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