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We investigate the photon structure functions at small Bjorken variable $x$ in the framework of the holographic QCD, assuming dominance of the Pomeron exchange. The quasi-real photon structure functions are expressed as convolution of the…

High Energy Physics - Phenomenology · Physics 2015-11-04 Akira Watanabe , Hsiang-nan Li

We present our analysis on the photon structure functions at small Bjorken variable x in the framework of the holographic QCD. In the kinematic region, a photon can fluctuate into vector mesons and behaves like a hadron rather than a…

High Energy Physics - Phenomenology · Physics 2016-12-21 Akira Watanabe , Hsiang-nan Li

We present analyses on nucleon structure functions at the small Bjorken-$x$ in the framework of holographic QCD. In this study, we improve the description of the target nucleon in the current setup of the holographic model by introducing a…

High Energy Physics - Phenomenology · Physics 2014-08-04 Akira Watanabe , Katsuhiko Suzuki

The analysis on nucleon structure functions at small Bjorken $x$ in the framework of holographic QCD is presented. In the model setup, the complicated nonperturbative interaction between the virtual photon and the target nucleon is…

High Energy Physics - Phenomenology · Physics 2016-06-22 Akira Watanabe , Katsuhiko Suzuki

We study the electron-photon deep inelastic scattering at small Bjorken variable x in the framework of holographic QCD, employing the Pomeron exchange to describe the involved strong interaction. With the Brower-Polchinski-Strassler-Tan…

High Energy Physics - Phenomenology · Physics 2018-08-03 Akira Watanabe , Hsiang-nan Li

We study the nucleon and pion structure functions at small Bjorken-$x$ region in the framework of holographic QCD with a special emphasis on the roles of AdS space wave functions. Using the BPST kernel for the Pomeron exchange and…

High Energy Physics - Phenomenology · Physics 2012-08-14 Akira Watanabe , Katsuhiko Suzuki

We discuss weak-vector-boson scattering, at next-to-leading order in QCD, within the framework of hadronic structure functions. We use this approach to calculate the Higgs-boson production cross section via vector-boson fusion at the…

High Energy Physics - Phenomenology · Physics 2009-10-22 T. Han , G. Valencia , S. Willenbrock

We perform an analysis of the elastic production of vector mesons with polarized photon beams at high energy in order to investigate the validity of a recently proposed dynamical mechanism based on the dominance of the f_1 trajectory at…

High Energy Physics - Phenomenology · Physics 2009-10-31 Yongseok Oh , Nikolai I. Kochelev , Dong-Pil Min , Vicente Vento , Andrey V. Vinnikov

Whereas the theoretical results for the dominant contributions to hadronic light-by-light scattering coming from pseudoscalar meson exchange have converged over the past years, the various published estimates of the contribution due to…

High Energy Physics - Phenomenology · Physics 2020-12-14 Josef Leutgeb , Anton Rebhan

We present our analysis on the high energy scattering processes in the framework of the holographic QCD, assuming that the Pomeron exchange gives a dominant contribution to the cross sections. Focusing on the two-body scattering, we employ…

High Energy Physics - Phenomenology · Physics 2019-10-23 Akira Watanabe

Symmetric and antisymmetric structure functions from electromagnetic deep inelastic scattering of charged leptons off spin-1/2 hadrons are investigated in the framework of a top-down holographic dual description. We consider the BPST…

High Energy Physics - Phenomenology · Physics 2022-10-12 David Jorrin , Martin Schvellinger

High-statistics total cross sections for the vector meson photoproduction at the threshold: $\gamma p\to\omega p$ (from A2 at MAMI, ELPH, and CBELSA/TAPS), $\gamma p\to \phi p$ (from CLAS and LEPS), and $\gamma p\to J/\psi p$ (from GlueX)…

High Energy Physics - Phenomenology · Physics 2025-08-12 Igor Strakovsky

We discuss diffractive photon-production of vector mesons in holographic QCD. At large $\sqrt{s}$, the QCD scattering amplitudes are reduced to the scattering of pair of dipoles exchanging a closed string or a pomeron. We use the…

High Energy Physics - Phenomenology · Physics 2018-09-19 Chang Hwan Lee , Hui-Young Ryu , Ismail Zahed

The photonuclear production of vector mesons in ultraperipheral heavy ion collisions is investigated within the QCD color dipole picture, with particular emphasis on the saturation model. The integrated cross section and the rapidity…

High Energy Physics - Phenomenology · Physics 2011-09-13 V. P. Goncalves , M. V. T. Machado

A recently developed model for $\rho$-meson propagation in dense hadronic matter is applied to total photoabsorption cross sections in $\gamma$-proton and $\gamma$-nucleus reactions. Within the vector dominance model the photon coupling to…

Nuclear Theory · Physics 2008-11-26 R. Rapp , M. Urban , M. Buballa , J. Wambach

The vector dominance of the electromagnetic form factors both for mesons and baryons arises naturally in holographic QCD, where both the number of colors and the 't Hooft coupling are taken to be very large, offering a bona-fide derivation…

High Energy Physics - Phenomenology · Physics 2008-11-26 Deog Ki Hong , Mannque Rho , Ho-Ung Yee , Piljin Yi

Under the framework of the vector meson dominance model (VMD), the absolute scattering lengths of light vector mesons ($\phi$, $\omega$, and $\rho$) with the deuteron are calculated from the cross sections of vector meson photoproduction…

High Energy Physics - Phenomenology · Physics 2024-07-04 Xiao-Yun Wang , Chen Dong , Quanjin Wang

We explain that the generalized vector meson dominance (GVMD) model is successful in describing hard high energy processes because it contains expected in QCD Color Coherent Phenomena. Within the model, which reproduces Bjorken scaling and…

High Energy Physics - Phenomenology · Physics 2016-08-25 L. Frankfurt , V. Guzey , M. Strikman

We study diffractive vector meson photoproduction using string theory via AdS/CFT. The large $s$ behavior of the cross sections for the scattering of the vector meson $V$ on a proton is dominated by the soft Pomeron, $\sigma_V\sim…

High Energy Physics - Theory · Physics 2009-11-06 Peter G. O. Freund , Horatiu Nastase

We argued that deep inelastic scattering (DIS) at small values of Q squared is an essentially nonperturbative process and can be described, partially at least, by the vector meson dominance (VMD) model. We showed by the straightforward…

High Energy Physics - Phenomenology · Physics 2015-06-19 Edgar Bugaev , Boris Mangazeev
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