Twist-3 contribution to deeply virtual electroproduction of pions

Duplančić, Goran; Kroll, Peter; Passek-Kumerički, Kornelija; Szymanowski, Lech (2024) Twist-3 contribution to deeply virtual electroproduction of pions. Physical Review D, 109 (3). ISSN 2470-0029

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Abstract

The twist-3 contribution, consisting of twist-2 transversity generalized parton distributions (GPDs) and a twist-3 meson wave function, to deeply virtual pion electroproduction is discussed. The twist-3 meson wave function includes both the $q\bar{q}$ and the $q\bar{q}g$ Fock components. Two methods to regularize the end-point singularities are introduced - quark transverse momenta and a gluon mass. Using existing GPD parameterizations the transverse and the transverse-transverse interference cross sections for $\pi^0$ production are calculated and compared to experimental data.

Item Type:	Article
Additional Information:	Imported from arXiv
Uncontrolled Keywords:	QCD Phenomenology; Generalized Parton Distributions; Electroproduction; Mesons
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:	16 Feb 2024 08:45
URI:	http://fulir.irb.hr/id/eprint/8587
DOI:	10.1103/PhysRevD.109.034008

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