Transversity in exclusive meson electroproduction
P. Kroll (Wuppertal Univ.)
TL;DR
This paper reviews spin effects in exclusive meson electroproduction, highlighting the role of transversity GPDs and twist-3 pion wave functions in modeling the process, supported by recent theoretical calculations and data analysis.
Contribution
It introduces a detailed analysis of transversity GPDs in meson electroproduction, emphasizing the significance of photon-pion transitions and twist-3 effects.
Findings
Strong contribution from photon-pion transitions in electroproduction of pions
Modeling with transversity GPD H_T and twist-3 pion wave function fits data
Theoretical calculations align with experimental observations
Abstract
In this talk various spin effects in hard exclusive electroproduction of mesons are briefly reviewed and the data discussed in the light of recent theoretical calculations within the frame work of the handbag approach. For electroproduction of positively charged pions it is shown that there is a strong contribution from photon-pion transitions which can be modeled by the transversity GPD H_T accompanied by the twist-3 pion wave function.
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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · Particle physics theoretical and experimental studies · High-Energy Particle Collisions Research