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J-GLOBAL ID：200901011552330056   Update date: Dec. 06, 2023

Koike Yuji

コイケ ユウジ | Koike Yuji
Affiliation and department：
Niigata University Faculty of Science Department of Science

About Niigata University Faculty of Science Department of Science


Job title： Professor
Other affiliations (1)：
  • Niigata University  Graduate School of Science and Technology Fundamental Sciences   Professor
Research field  (1)： Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
Research keywords  (6)： パートン分布・破砕関数 ,  パートン間量子多体相関 ,  スピン非対称 ,  ハドロン構造 ,  摂動QCD ,  高エネルギーハドロン反応
Research theme for competitive and other funds  (5)：
  • 2019 - 2024 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
  • 2014 - 2019 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
  • 2011 - 2014 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
  • 2008 - 2009 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
  • 2000 - 2003 RHIC-SPINにおけるハドロンの内部構造の研究
Papers (69)：
  • Riku Ikarashi, Yuji Koike, Kenta Yabe, Shinsuke Yoshida. New derivation of the twist-3 gluon fragmentation contribution to polarized hyperon production. Physical Review D. 2022. 106. 7
  • Riku Ikarashi, Yuji Koike, Kenta Yabe, Shinsuke Yoshida. Twist-3 gluon fragmentation contribution to hyperon polarization in semi-inclusive deep inelastic scattering. Physical Review D. 2022. 105. 9
  • Yuji Koike, Kazuki Takada, Sumire Usui, Kenta Yabe, Shinsuke Yoshida. Transverse polarization of hyperons produced in semi-inclusive deep inelastic scattering. Physical Review D. 2022. 105. 5
  • Yuji Koike, Kenta Yabe, Shinsuke Yoshida. Twist-3 gluon fragmentation contribution to polarized hyperon production in unpolarized proton-proton collision. Physical Review D. 2021. 104. 5. 054023
  • Yuji Koike, Kenta Yabe, Shinsuke Yoshida. Exact relations for twist-3 gluon distribution and fragmentation functions from operator identities. Physical Review D. 2020. 101. 5. 054017
ｍore...
MISC (43)：
  • Kazuki Takada, Yuji Koike, Sumire Usui, Kenta Yabe, Shinsuke Yoshida. Collinear Twist-3 Approach to Hyperon Polarization in SIDIS. Proceedings of the 24th International Spin Symposium (SPIN2021). 2022. 37. 020302
  • Yuji Koike, Kenta Yabe, Shinsuke Yoshida. Twist-3 Gluon Fragmentation Contribution to Polarized Hyperon Production and its Frame Independence. Proceedings of the 24th International Spin Symposium (SPIN2021). 2022. 37. 020114
  • Riku Ikarashi, Yuji Koike, Kenta Yabe, Shinsuke Yoshida. Transverse Polarization of Hyperons in SIDIS from Twist-3 Gluon Fragmentation Functions. Proceedings of the 24th International Spin Symposium (SPIN2021). 2022. 37. 020113
  • Riku Ikarashi, Yuji Koike, Kenta Yabe, Shinsuke Yoshida. Twist-3 gluon fragmentation contribution to transversely polarized hyperon production in semi-inclusive deep-inelastic scattering. Proceedings of Particles and Nuclei International Conference 2021 - PoS(PANIC2021). 2022. PANIC2021. 370
  • Yuji Koike. Keyword: Twist-3. 2022. 66. 2. 74-75
ｍore...
Books (1)：
  • Gluons and the quark sea at high energies: Distributions, polarization, tomography
    INT-PUB-11-034 2011
Lectures and oral presentations  (39)：
  • Spin observables in twist-3 approach
    (22nd International Spin Symposium (SPIN2016), Univ. Illinois at Urbana-Champaign, IL, USA, 2016)
  • Twist-3 spin asymmetries and parton correlations
    (26th International Nuclear Physics Conference (INPC2016), Adelaide, Australia 2016)
  • Twist-3 asymmetries in proton-proton collisions
    (QCD Evolution 2016, Amsterdam, Netherland, 2016)
  • `Twist-3 fragmentation effect in spin asymmetries
    (From 1D fragmentation towards 3D correlated fragmentation, ECT*, Trento, Italy 2015)
  • Overview of the collinear twist-3 factorization for spin asymmetries
    (23rd International conference on deep-inelastic scattering and related subjects (DIS2015), Dallas, Texas, USA 2015)
ｍore...
Education (2)：
  • 1983 - 1988 The University of Tokyo Graduate School, Division of Science
  • 1979 - 1983 The University of Tokyo Faculty of Science
Professional career (1)：
  • 理学博士 (東京大学)
Work history (9)：
  • 2017/04/01 - 現在 Niigata University Faculty of Science Department of Science Professor
  • 2011/11 - 現在 Niigata University Graduate School of Science and Technology Fundamental Sciences Professor
  • 1999/02 - 2011/10 Niigata University Faculty of Science
  • 1994/04 - 1999/02 新潟大学 自然科学研究科 助手
  • 1992/09 - 1994/03 Michigan State University Research Associate
Show all
Association Membership(s) (1)：
日本物理学会
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