Diffractive $\rho$ and $\varphi$ production at HERA using an AdS/QCD holographic light-front meson wavefunction

Abstract

We use an anti-de Sitter/Quantum Chromodynamics (AdS/QCD) holographic light-front wavefunction for the $\rho$ and $\varphi$ mesons, in conjunction with the Color Glass Condensate (CGC) dipole cross-section whose parameters are fitted to the most recent 2015 high precision HERA data on inclusive Deep Inelastic Scattering (DIS), in order to predict the cross-sections for diffractive $\rho$ and $\varphi$ electroproduction. Our results suggest that the holographic meson light-front wavefunction is able to give a simultaneous description of the $\rho$ and $\varphi$ production data provided we use a set of light quark masses with $m_{u,d}$ < $m_s$ ~ 0.14 GeV.

27 pages, 10 figures, 4 tables. References updated. Minor corrections to improve presentation. Conclusions and plots unchanged. Matches PRD version

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• An overview of scale invariance in proton structure with holographic insights
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