Wide-angle photoproduction of the η′-meson and its gluon content

Kroll, Peter; Passek-Kumerički, Kornelija (2022) Wide-angle photoproduction of the η′-meson and its gluon content. Physical review. D, 105 (3). ISSN 2470-0010

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Abstract

We investigate wide-angle photoproduction of the η′ meson within the handbag approach to twist-3 accuracy. It turns out that, due to the gluon content of the η ′, this process is dominated by twist 2 in contrast with pion and η photoproduction. Using the presently avail- able information on the twist-2 and twist-3 distribution amplitudes and on the η − η ′ mixing, we provide prediction for ′ the η′ cross sec- tion and helicity correlations. It is argued that η photoproduction is well suited to improve our knowledge of the two-gluon distribution amplitude.

Item Type:	Article
Uncontrolled Keywords:	exclusive processes ; meson photoproduction ; wide-angle ; eta'-meson, higher-twist
Subjects:	NATURAL SCIENCES > Physics
Divisions:	Theoretical Physics Division
Projects:	Project title Project leader Project code Project type Razotkrivanje strukture hadrona pomoću tvrdih ekskluzivnih procesa Passek-Kumerički, Kornelija IP-2019-04-9709 HRZZ The strong interaction at the frontier of knowledge: fundamental research and applications Korolija, Milorad; Bosnar, Damir; Kumerički, Krešimir; Passek-Kumerički, Kornelija 824093 EK
Depositing User:	Kornelija Passek-Kumerički
Date Deposited:	29 Jun 2022 12:36
URI:	http://fulir.irb.hr/id/eprint/7434
DOI:	10.1103/PhysRevD.105.034005

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