Holographic charm and bottom pentaquarks III: Excitations through photo-production of heavy mesons

Abstract

We consider the photo-excitation of charm and bottom pentaquarks with the holographic assignments $[\frac{1}{2}{\frac{1}{2}}^{-}{]}_{S=0,1}$ and $[\frac{1}{2}{\frac{3}{2}}^{-}{]}_{S=1}$, in the photo-production of heavy vector mesons such as charmonia and bottomonia near threshold. We use a Witten diagram to combine the s-channel photo-excitation of holographic pentaquarks with a massive t-channel graviton or tensor glueball exchange, to extract the scattering amplitude for heavy meson photo-production in the threshold region. The pentaquark signal is too weak to be detected at current electron facilities.

21 pages, 6 figures

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Cited by in corpus (6)

• Gravitational form factors of pion from top-down holographic QCD
• Holographic charm and bottom pentaquarks II: Open and hidden decay widths
• Holographic charm and bottom pentaquarks I: Mass spectra with spin effects
• Evidence supporting the existence of $P_c(4380{)}^{\pm }$ from the recent measurements of $B_s\to J/\psi p\bar{p}$
• Investigation of a candidate spin-$\frac{1}{2}$ hidden-charm triple strange pentaquark state $P_{csss}$
• Scalar-glueball-mediated scale-anomaly dominance of the confining pressure of the pion in holographic QCD