Yuji Koike

Profile Information

Affiliation: Professor, Faculty of Science Department of Science, Niigata University
: (Concurrent)Professor, Graduate School of Science and Technology Fundamental Sciences

Degree: 理学博士(Mar, 1988, 東京大学)

Researcher number: 60262458
J-GLOBAL ID: 200901011552330056
researchmap Member ID: 1000243636

Research Interests

Research Areas

Natural sciences / Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics /

Research History

Apr, 2017 - Present

Professor, Faculty of Science Department of Science, Niigata University
Nov, 2011 - Present

Professor, Graduate School of Science and Technology Fundamental Sciences, Niigata University
Feb, 1999 - Oct, 2011

Faculty of Science, Niigata University
Apr, 1994 - Feb, 1999

新潟大学自然科学研究科助手
Sep, 1992 - Mar, 1994

Research Associate, Michigan State University
Sep, 1990 - Aug, 1992

Research Associate, The University of Maryland
Sep, 1988 - Aug, 1990

Sponsored Research Staff, Massachusetts Institute of Technology
Apr, 1988 - Aug, 1988

Faculty of Science, The University of Tokyo
Apr, 1987 - Mar, 1988

Faculty of Science, The University of Tokyo

Education

Apr, 1983 - Mar, 1988

Graduate School, Division of Science, The University of Tokyo
Apr, 1979 - Mar, 1983

Faculty of Science, The University of Tokyo

Papers

New derivation of the twist-3 gluon fragmentation contribution to polarized hyperon production

Riku Ikarashi, Yuji Koike, Kenta Yabe, Shinsuke Yoshida

Physical Review D, 106(7), Oct 11, 2022 Peer-reviewed
Twist-3 gluon fragmentation contribution to hyperon polarization in semi-inclusive deep inelastic scattering

Riku Ikarashi, Yuji Koike, Kenta Yabe, Shinsuke Yoshida

Physical Review D, 105(9), May 24, 2022 Peer-reviewed
Transverse polarization of hyperons produced in semi-inclusive deep inelastic scattering

Yuji Koike, Kazuki Takada, Sumire Usui, Kenta Yabe, Shinsuke Yoshida

Physical Review D, 105(5), Mar 28, 2022 Peer-reviewed
Twist-3 gluon fragmentation contribution to polarized hyperon production in unpolarized proton-proton collision

Yuji Koike, Kenta Yabe, Shinsuke Yoshida

Physical Review D, 104(5) 054023, Sep 21, 2021 Peer-reviewed
Exact relations for twist-3 gluon distribution and fragmentation functions from operator identities

Yuji Koike, Kenta Yabe, Shinsuke Yoshida

Physical Review D, 101(5) 054017, Mar 12, 2020 Peer-reviewed
Twist-3 fragmentation contribution to polarized hyperon production in unpolarized hadronic collisions

Yuji Koike, Andreas Metz, Daniel Pitonyak, Kenta Yabe, Shinsuke Yoshida

PHYSICAL REVIEW D, 95(11), Jun, 2017 Peer-reviewed
Twist-3 effect from the longitudinally polarized proton for A(LT) in hadron production from pp collisions

Yuji Koike, Daniel Pitonyak, Shinsuke Yoshida

PHYSICS LETTERS B, 759 75-81, Aug, 2016 Peer-reviewed
Operator constraints for twist-3 functions and Lorentz invariance properties of twist-3 observables

Koichi Kanazawa, Yuji Koike, Andreas Metz, Daniel Pitonyak, Marc Schlegel

PHYSICAL REVIEW D, 93(5), Mar, 2016 Peer-reviewed
Twist-3 fragmentation effects for A(LT) in light hadron production from proton-proton collisions

Y. Koike, D. Pitonyak, Y. Takagi, S. Yoshida

PHYSICS LETTERS B, 752 95-101, Jan, 2016 Peer-reviewed
Hyperon polarization from the twist-3 distribution in unpolarized proton-proton collision

Yuji Koike, Kenta Yabe, Shinsuke Yoshida

PHYSICAL REVIEW D, 92(9), Nov, 2015 Peer-reviewed
Transverse single-spin asymmetries in p(up arrow)p -> gamma X from quark-gluon-quark correlations in the proton

K. Kanazawa, Y. Koike, A. Metz, D. Pitonyak

PHYSICAL REVIEW D, 91(1), Jan, 2015 Peer-reviewed
Transverse Single-Spin Asymmetries in Proton-Proton Collisions at the AFTER@LHC Experiment

K. Kanazawa, Y. Koike, A. Metz, D. Pitonyak

ADVANCES IN HIGH ENERGY PHYSICS, 2015(257934), 2015 Peer-reviewed
Towards an explanation of transverse single-spin asymmetries in proton-proton collisions: The role of fragmentation in collinear factorization

Koichi Kanazawa, Yuji Koike, Andreas Metz, Daniel Pitonyak

PHYSICAL REVIEW D, 89(11), Jun, 2014 Peer-reviewed
Three-gluon contribution to the single spin asymmetry for light hadron production in pp collision

Hiroo Beppu, Koichi Kanazawa, Yuji Koike, Shinsuke Yoshida

PHYSICAL REVIEW D, 89(3), Feb, 2014 Peer-reviewed
Contribution of the twist-3 fragmentation function to the single transverse-spin asymmetry in semi-inclusive deep inelastic scattering

Koichi Kanazawa, Yuji Koike

Physical Review D - Particles, Fields, Gravitation and Cosmology, 88(7), Oct 21, 2013 Peer-reviewed
Single transverse-spin asymmetry for direct-photon and single-jet productions at RHIC

Koichi Kanazawa, Yuji Koike

PHYSICS LETTERS B, 720(1-3) 161-165, Mar, 2013 Peer-reviewed
Single transverse-spin asymmetry in large P-T open charm production at an electron-ion collider

Hiroo Beppu, Yuji Koike, Kazuhiro Tanaka, Shinsuke Yoshida

PHYSICAL REVIEW D, 85(11) 1-11, Jun, 2012 Peer-reviewed
Three-gluon contribution to the single spin asymmetry in Drell-Yan and direct-photon processes

Yuji Koike, Shinsuke Yoshida

PHYSICAL REVIEW D, 85(3) 1-8, Feb, 2012 Peer-reviewed
Probing the three-gluon correlation functions by the single spin asymmetry in p(up arrow)p -> DX

Yuji Koike, Shinsuke Yoshida

PHYSICAL REVIEW D, 84(1), Jul, 2011 Peer-reviewed
Hard- and soft-fermion-pole contributions to single transverse-spin asymmetry for Drell-Yan process

Koichi Kanazawa, Yuji Koike

PHYSICS LETTERS B, 701(5) 576-580, Jul, 2011 Peer-reviewed

Misc.

Collinear Twist-3 Approach to Hyperon Polarization in SIDIS

Kazuki Takada, Yuji Koike, Sumire Usui, Kenta Yabe, Shinsuke Yoshida

Proceedings of the 24th International Spin Symposium (SPIN2021), 37 020302, Dec 26, 2022 Peer-reviewed
Twist-3 Gluon Fragmentation Contribution to Polarized Hyperon Production and its Frame Independence

Yuji Koike, Kenta Yabe, Shinsuke Yoshida

Proceedings of the 24th International Spin Symposium (SPIN2021), 37 020114, Dec 26, 2022 Peer-reviewed
Transverse Polarization of Hyperons in SIDIS from Twist-3 Gluon Fragmentation Functions

Riku Ikarashi, Yuji Koike, Kenta Yabe, Shinsuke Yoshida

Proceedings of the 24th International Spin Symposium (SPIN2021), 37 020113, Dec 26, 2022 Peer-reviewed
Twist-3 gluon fragmentation contribution to transversely polarized hyperon production in semi-inclusive deep-inelastic scattering

Riku Ikarashi, Yuji Koike, Kenta Yabe, Shinsuke Yoshida

Proceedings of Particles and Nuclei International Conference 2021 — PoS(PANIC2021), PANIC2021 370, Mar 2, 2022 Peer-reviewed
Keyword: Twist-3

Yuji Koike

66(2) 74-75, Mar, 2022 Peer-reviewed
Twist-3 Gluon Fragmentation Contribution to the Polarized Hyperon Production in Unpolarized Proton–Proton Collision

Kenta Yabe, Yuji Koike, Andreas Metz, Daniel Pitonyak, Shinsuke Yoshida

Proceedings of the 8th International Conference on Quarks and Nuclear Physics (QNP2018), Nov 8, 2019 Peer-reviewed
Twist-3 fragmentation contribution to polarized hyperon production in unpolarized proton-proton collision

Yabe Kenta, Yuji Koike, Andreas Metz, Daniel Pitonyak, Shinsuke Yoshida

Proceedings of 23rd International Spin Physics Symposium — PoS(SPIN2018), 192-196, Aug 19, 2019 Peer-reviewed
Twist-3 Spin Asymmetries And Parton Correlations In High-energy Processes

KOIKE Yuji

Pos INPC, 2016(312), 2017 Peer-reviewed
Twist-3 asymmetries in proton-proton collisions

KOIKE Yuji

PoS QCDEV, 2016(029), 2017 Peer-reviewed
Lorentz invariance relations for twist-3 functions and frame-independence of twist-3 cross sections

Yuji Koike, Koichi Kanazawa, Andreas Metz, Daniel Pitonyak, Marc Schlegel

Proceedings of XXIV International Workshop on Deep-Inelastic Scattering and Related Subjects — PoS(DIS2016), 2016(220), Nov 9, 2016 Peer-reviewed
Twist-3 approach to hyperon polarization in unpolarized proton-proton collision

K. Yabe, Y. Koike, S. Yoshida

PoS DIS, 2016(222), 2016 Peer-reviewed
Collinear Twist-3 Approach to Transverse Single-Spin Asymmetry in Proton-Proton Collision

Koichi Kanazawa, Andreas Metz, Yuji Koike, Daniel Pitonyak

Proceedings of 12th Conference on the Intersections of Particle and Nuclear Physics (CIPANP 2015), Vail, Colorado, USA, Sep, 2015
New Collinear Twist-3 Analysis of Transverse SSA: Toward a Solution for the Sign-Mismatch Problem

Koichi Kanazawa, Yuji Koike, Andreas Metz, Daniel Pitonyak

FEW-BODY SYSTEMS, 56(6-9) 343-348, Sep, 2015 Peer-reviewed
Transverse Single-Spin Asymmetries in Proton-Proton Collisions Within Collinear Factorization

D. Pitonyak, K. Kanazawa, Y. Koike, A. Metz

Int. J. Mod. Phys. Conf. Ser., 37(1560033), 2015 Peer-reviewedInvited
The role of three-gluon correlation functions in the single spin asymmetry

Hiroo Beppu, Koichi Kanazawa, Yuji Koike, Shinsuke Yoshida

4TH INTERNATIONAL WORKSHOP ON TRANSVERSE POLARISATION PHENOMENA IN HARD PROCESSES (TRANSVERSITY 2014), 85, 2015 Peer-reviewed
A(N) in proton-proton collisions and the role of twist-3 fragmentation

Daniel Pitonyak, Koichi Kanazawa, Yuji Koike, Andreas Metz

4TH INTERNATIONAL WORKSHOP ON TRANSVERSE POLARISATION PHENOMENA IN HARD PROCESSES (TRANSVERSITY 2014), 85, 2015 Peer-reviewed
Twist-3 quark-gluon correlation contribution to single-transverse spin asymmetry for direct-photon and single-jet productions in pp collision

K. Kanazawa, Y. Koike

PHYSICS OF PARTICLES AND NUCLEI, 45(1) 82-84, Jan, 2014 Peer-reviewed
Contribution of the twist-3 fragmentation function to single transverse-spin asymmetry in SIDIS

Koichi Kanazawa, Yuji Koike

PoS DIS, 2013 245, Jun, 2013
Twist-3 approach to single transverse-spin asymmetry

K. Kanazawa, Y. Koike

Nuovo Cimento della Societa Italiana di Fisica C, 36(5) 101-104, 2013 Peer-reviewed
Probing the multi-gluon correlations through single-spin asymmetries

Yuji Koike, Shinsuke Yoshida

Nuovo Cimento della Societa Italiana di Fisica C, 35(2) 137-142, 2012 Peer-reviewed

Books and Other Publications

Gluons and the quark sea at high energies: Distributions, polarization, tomography

D. Boer (Role: Joint author, 95-119頁の一部)

INT-PUB-11-034, Aug, 2011

Presentations

Spin observables in twist-3 approach

KOIKE Yuji

22nd International Spin Symposium (SPIN2016), Univ. Illinois at Urbana-Champaign, IL, USA,, Sep 26, 2016 Invited
Twist-3 spin asymmetries and parton correlations

KOIKE Yuji

26th International Nuclear Physics Conference (INPC2016), Adelaide, Australia, Sep 11, 2016 Invited
Twist-3 asymmetries in proton-proton collisions

KOIKE Yuji

QCD Evolution 2016, Amsterdam, Netherland,, May 30, 2016 Invited
`Twist-3 fragmentation effect in spin asymmetries

KOIKE Yuji

From 1D fragmentation towards 3D correlated fragmentation, ECT*, Trento, Italy, Oct 26, 2015 Invited
Overview of the collinear twist-3 factorization for spin asymmetries

KOIKE Yuji

23rd International conference on deep-inelastic scattering and related subjects (DIS2015), Dallas, Texas, USA, Apr 27, 2015 Invited
Single spin asymmetries in $pp$ collisions

KOIKE Yuji

KEK theory cernter workshop on hadron physics with high-momentum hadron beams at J-PARC in 2015, KEK, Tsukuba, Mar 16, 2015 Invited
Single transverse spin asymmetry

KOIKE Yuji

4th Joint Meeting of the Nuclear Physics Divisions of the American Physical Society and The Physical Society of Japan, (HAWAII 2014), October 7-11, 2014, Waikoloa, Hawaii, Oct 7, 2014 Invited
The role of three-gluon correlation functions in the single-spin asymmetry

KOIKE Yuji

4th International Workshop on Transverse Plarization Phenomena in Hard Processes (Transversity 2014), Cagliari, Italy, Sep 13, 2014 Invited
Single transverse spin asymmetry in QCD

KOIKE Yuji

9th Circum-Pan-Pacific Symposium on High Energy Spin Physics, Jinan, China, Oct 28, 2013 Invited
Single transverse-spin asymmetry in twist-3

KOIKE Yuji

Berkeley Summer Program, "QCD Landscape of the Nucleon and Atomic Nuclei", Lawrence Berkerey National Laboratory, California, USA, Aug 11, 2013 Invited
Single transverse-spin asymmetry: New theory frameworks confront RHIC and eRHIC data

KOIKE Yuji

PHENIX Workshop on Physics Prospects With Detector and Accelerator Upgrades, 理研，和光市（埼玉）, Jul 29, 2013 Invited
Single transverse-spin asymmetry in high-energy QCD

KOIKE Yuji

The 10th Particle Physics Phenomenology Workshop (PPP10)、 Chung-Yuan Christian University, Taiwan,, May 29, 2013 Invited
Twist-3 single spin asymmetries

Y. Koike

3rd Workshop on the QCD Structure of the Nucleon (QCD-N'12), Bilbao, Spain, Oct 22, 2012 Invited
Single Transverse Spin Asymmetry in the Forward and Backward Directions

Y. Koike

Workshop On Forward Physics at RHIC, Jul 30, 2012, RIKEN-BNL Research Center Invited
Probing multi-parton correlations through single-spin asymmetries in QCD hard processes

Y. Koike

Modern Trends in Quantum Chromodynamics, Oct 3, 2011, DESY Invited
Probing the multi-gluon correlations through single spin asymmetries

Y. Koike

Third International Workshop on Transverse Polarization Phenomena in Hard Scattering, Aug 29, 2011, International Spin Physics Committee, Trieste unit of the PRIN 2008 project Invited
Probing multi-gluon correlations through single spin asymmetries in pp collisions

Y. Koike

8th Circum-Pan-Pacific Symposium on High Energy Spin Physics: PacSPIN2011, Cairns, Australia, Jun 20, 2011 Invited
Probing multi-gluon correlations in pp collisions

Y. Koike

RIKEN-BNL center workshp ``Opportunities for Drell-Yan Physics at RHIC", BNL, Upton, NY, USA, May 11, 2011 Invited
Single transverse spin asymmetry in pp collisions: new results from twist-3 mechanism

Y. Koike

INT program``Gluons and the quark sea at high energies: distributions, polarization, tomography", (Univ. of Washington, Seattle, USA), Nov 7, 2010 Invited
Overview of single transverse spin asymmetry: Twist-3 mechanism

Y. Koike

Brookhaven summer program on nucleon spin physics (Brookhaven National Laboratory, New York, USA), Jul 14, 2010 Invited

Teaching Experience

Professional Memberships

日本物理学会

Research Projects

QCD高次ツイスト効果を起源とする謎現象の解明とハドロン構造の新側面の開拓

科学研究費助成事業, 基盤研究(C), 日本学術振興会, Apr, 2019 - Mar, 2024

小池裕司
クォーク・グルーオン多体相関がもたらす新奇現象の解明と構造関数の格子QCD計算

科学研究費助成事業基盤研究（Ｂ）, 基盤研究(B), 日本学術振興会, Apr, 2014 - Mar, 2019

小池裕司
QCD高次ツイスト効果がもたらす新奇な現象の解明とハドロン構造の研究

科学研究費助成事業基盤研究（Ｃ）, 基盤研究(C), 日本学術振興会, Apr, 2011 - Mar, 2014

小池裕司
高エネルギー核子ー核子衝突におけるシングルスピン非対称の研究

内田エネルギー財団・試験研究, 民間財団等, Jul, 2008 - Mar, 2009

小池裕司
RHIC-SPINにおけるハドロンの内部構造の研究

科学研究費助成事業基盤研究（Ｃ）, 基盤研究(C), 日本学術振興会, Apr, 2000 - Mar, 2003

小池裕司

Profile Information

Research Interests

Research Areas

Research History

Education

Papers

Misc.

Books and Other Publications

Presentations

Teaching Experience

Professional Memberships

Research Projects

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