Chiral-odd GPDs in the bag model

Tezgin, Kemal; Maynard, Brean; Schweitzer, Peter

doi:10.1103/PhysRevD.110.054028

Title: Chiral-odd GPDs in the bag model

Journal Article · 20 September 2024 · Physical Review. D.

DOI: https://doi.org/10.1103/PhysRevD.110.054028 · OSTI ID:2447524

; Maynard, Brean;

A study of chiral-odd generalized parton distributions (GPDs) of the nucleon is presented in the bag model demonstrating that in this model all four chiral-odd GPDs are nonzero contrary to other claims in literature. The bag model results for the GPDs $H_{T}^{q} (x, ξ, t)$ , $E_{T}^{q} (x, ξ, t)$ , ${\tilde{H}}_{T}^{q} (x, ξ, t)$ agree with other models within a typical quark model accuracy. We present one of the few quark model calculations where polynomiality is satisfied and the sum rule $\int d x {\tilde{E}}_{T}^{q} (x, ξ, t) = 0$ holds. We confront our results with predictions from the large- $N_{c}$ limit, and with lattice QCD calculations. We conclude that the bag model successfully catches the main features of chiral-odd GPDs. Published by the American Physical Society 2024

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Sponsoring Organization:: USDOE

Grant/Contract Number:: SC0012704; SC0023646

OSTI ID:: 2447524

Journal Information:: Physical Review. D., Journal Name: Physical Review. D. Journal Issue: 5 Vol. 110; ISSN PRVDAQ; ISSN 2470-0010

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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