Transition GPDs and exclusive electroproduction of π−Δ(1232) final states

Kroll, Peter; Passek-Kumerički, Kornelija (2023) Transition GPDs and exclusive electroproduction of π−Δ(1232) final states. Physical Review D, 107 (5). ISSN 2470-0010

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Abstract

We investigate exclusive electroproduction of π-Δ++ within the handbag approach in which the helicity amplitudes factorize into generalized parton distributions (GPDs) and hard partonic subprocesses. We define the p-Δ transversity GPDs while the helicity nonflip GPDs are taken from the literature. For the numerical estimates of observables we utilize large-NC results in order to relate a few of the p-Δ GPDs to the proton-proton ones and neglect all other GPDs. In the calculation of the twist-2 and twist-3 subprocess amplitudes we take into account quark transverse momenta in combination with Sudakov suppressions. The partial cross sections for γ*p→π-Δ++ are predicted in the large-NC limit.

Item Type:	Article
Uncontrolled Keywords:	QCD phenomenology; Generalized parton distributions (GPD); meson electroproduction
Subjects:	NATURAL SCIENCES > Physics > Physics of Elementary Particles and Fields
Divisions:	Theoretical Physics Division
Projects:	Project title Project leader Project code Project type Razotkrivanje strukture hadrona pomoću tvrdih ekskluzivnih procesa-REVESTRUCTURE Kornelija Passek-Kumerički IP-2019-04-9709 HRZZ The strong interaction at the frontier of knowledge: fundamental research and applications-STRONG-2020 Kornelija Passek-Kumerički 824093 EK
Depositing User:	Kornelija Passek-Kumerički
Date Deposited:	07 Feb 2024 09:44
URI:	http://fulir.irb.hr/id/eprint/8508
DOI:	10.1103/PhysRevD.107.054009

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