Threshold photoproduction of η c and η b using holographic QCD

Hechenberger, Florian; Mamo, Kiminad A.; Zahed, Ismail

doi:10.1103/PhysRevD.109.074013

Title: Threshold photoproduction of $η_{c}$ and $η_{b}$ using holographic QCD

Journal Article · 12 April 2024 · Physical Review. D.

DOI: https://doi.org/10.1103/PhysRevD.109.074013 · OSTI ID:2336833

; Mamo, Kiminad A.; Zahed, Ismail

We discuss the possibility that threshold photoproduction of $η_{c, b}$ may be sensitive to the pseudovector $1^{+ -}$ glueball exchange. We use the holographic construction to identify the pseudovector glueball with the Kalb-Ramond field, minimally coupled to bulk Dirac fermions. We derive the holographic C-odd form factor and its respective charge radius. Using the pertinent Witten diagrams, we derive and analyze the differential photoproduction cross section for $η_{c, b}$ in the threshold regime, including the interference from the dual bulk photon exchange with manifest vector dominance. The possibility of measuring this process at current and future electron facilities is discussed. Published by the American Physical Society 2024

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Sponsoring Organization:: USDOE

Grant/Contract Number:: SC0023646; FG02-04ER41302

OSTI ID:: 2336833

Journal Information:: Physical Review. D., Journal Name: Physical Review. D. Journal Issue: 7 Vol. 109; ISSN PRVDAQ; ISSN 2470-0010

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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