activity
19932022
most citedHigher Twist Distribution Amplitudes of Vector Mesons in QCD: Formalism and Twist Three Distributions

457 citations · 2.4k across the 73 of their papers we have counts for

collaborators

74 papers

hep-ph2022

A New Derivation of the Twist-3 Gluon Fragmentation Contribution to Polarized Hyperon Production

Riku Ikarashi, Yuji Koike, Kenta Yabe +1

A novel method of formulating the twist-3 gluon fragmentation function contribution to hyperon polarization in the proton-proton collision is presented. The method employs a covari…

hep-ph2022★ 10 cited

Transverse Polarization of Hyperons Produced in Semi-Inclusive Deep Inelastic Scattering

Yuji Koike, Kazuki Takada, Sumire Usui +2

We study the transverse polarization of hyperons produced in semi-inclusive deep inelastic scattering, , in the framework of the collinear twist-3 factorizatio…

hep-ph2022

Twist-3 Gluon Fragmentation Contribution to Hyperon Polarization in Semi-Inclusive Deep Inelastic Scattering

Riku Ikarashi, Yuji Koike, Kenta Yabe +1

We derive the twist-3 gluon fragmentation function (FF) contribution to the transversely polarized hyperon production in semi-inclusive deep inelastic scattering, $ep\to eΛ^\uparro…

hep-ph2021★ 11 cited

Twist-3 Gluon Fragmentation Contribution to Polarized Hyperon Production in Unpolarized Proton-Proton Collision

Yuji Koike, Kenta Yabe, Shinsuke Yoshida

Understanding the origin and mechanism of the transverse polarization of hyperons produced in unpolarized proton-proton collision, , has been one of the long-st…

hep-ph2019★ 23 cited

Exact Relations for Twist-3 Gluon Distribution and Fragmentation Functions from Operator Identities

Yuji Koike, Kenta Yabe, Shinsuke Yoshida

We perform a systematic study on the twist-3 gluon distribution and fragmentation functions which appear in the collinear twist-3 factorization for hard inclusive processes. Three…

hep-ph2017★ 26 cited

Twist-3 fragmentation contribution to polarized hyperon production in unpolarized hadronic collisions

Yuji Koike, Andreas Metz, Daniel Pitonyak +2

It has been known for a long time that hyperons produced in hadronic collisions are polarized perpendicular to the production plane of the reaction. This effect cannot be described…