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Quark fragmentation functions

Research Project

Project/Area Number 25400270
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionTokai University

Principal Investigator

Bentz Wolfgang  東海大学, 理学部, 教授 (20168769)

Co-Investigator(Kenkyū-buntansha) YAZAKI Koichi  国立研究開発法人理化学研究所, 仁科加速器研究センター, 研究員 (60012382)
Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywordsクォーク / ハドロン / 破砕関数 / 形状因子 / 応答関数 / fragmentation functions / hadron form factors / response functions / electron scattering / accelerator experiments / quark distributions
Outline of Final Research Achievements

We calculated the quark fragmentation functions, which describe the hadronn production in deep inelastic scattering of leptons on hadron targets.We included the dependence on the spin and transverse momentum of the fragmenting quark to describe multi-fragmentation processes. In our theoretical framework, the 3-dimensional momentum sum rules and the isospin sum rules are satisfied automatically. We pointed out that the spin independent and the spin dependent (so called Collins) fragmentation functions are coupled with each other. We also calculated the fragmentation functions for a quark to two hadrons (dihadron fragmentation functions), and found that the intermediate vector mesons give important contributions. By using our numerical analyses, we made theoretical predictions for the dihadron fragmentation functions.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (18 results)

All 2016 2015 2014 2013 Other

All Int'l Joint Research (2 results) Journal Article (12 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 12 results,  Open Access: 8 results,  Acknowledgement Compliant: 8 results) Presentation (3 results) Remarks (1 results)

  • [Int'l Joint Research] University of Adelaide/CSSM/ARC Centre of Excellence(Australia)

    • Related Report
      2015 Annual Research Report
  • [Int'l Joint Research] Argonne National Laboratory(U.S.A.)

    • Related Report
      2015 Annual Research Report
  • [Journal Article] Relativistic and nuclear medium effects on the Coulomb sum rule2016

    • Author(s)
      I.C. Cloet, W. Bentz, A.W. Thomas
    • Journal Title

      Physical Review Letters

      Volume: 116 Issue: 3 Pages: 1-5

    • DOI

      10.1103/physrevlett.116.032701

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Transverse momentum dependent jet model for quark fragmentation functions2016

    • Author(s)
      W. Bentz, K. Yazaki
    • Journal Title

      RIKEN accelerator progress report

      Volume: 49 Pages: 1-1

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Rho meson form factors in a confining Nambu-Jona-Lasinio model2015

    • Author(s)
      M.E. Carrillo-Serrano, W. Bentz, I.C. Cloet, A.W. Thomas
    • Journal Title

      Physical Review C

      Volume: 92 Issue: 1 Pages: 1-8

    • DOI

      10.1103/physrevc.92.015212

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Pion and Kaon form factors in the NJL model2015

    • Author(s)
      Y. Ninomiya, W. Bentz, I.C. Cloet
    • Journal Title

      RIKEN accelerator progress report

      Volume: 48 Pages: 132-132

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Dressed quark mass dependence of pion and kaon form factors2015

    • Author(s)
      Y. Ninomiya, W. Bentz, I.C. Cloet
    • Journal Title

      Physical Review C

      Volume: 91 Issue: 2 Pages: 1-14

    • DOI

      10.1103/physrevc.91.025202

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Pion and kaon form factors in the NJL model2015

    • Author(s)
      Y. Ninomiya, W. Bentz, I.C. Cloet
    • Journal Title

      RIKEN Accelerator Progress Report

      Volume: 48

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Role of diquark correlations and the pion cloud in nucleon elastic form factors2014

    • Author(s)
      I.C. Cloet, W. Bentz, A.W. Thomas
    • Journal Title

      Physical Review C

      Volume: 90 Issue: 4 Pages: 1-29

    • DOI

      10.1103/physrevc.90.045202

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Dihadron fragmentation functions in the NJL-jet model2014

    • Author(s)
      H. Matevosyan, W. Bentz, A.W. Thomas
    • Journal Title

      RIKEN Accelerator Progress Report

      Volume: 47 Pages: 105-105

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Te effect of vector meson decays on dihadron fragmentation functions2014

    • Author(s)
      H. H. Matevosyan, A.W. Thomas, W. Bentz
    • Journal Title

      EPJ Web of Conferences

      Volume: 66 Pages: 06014-06014

    • DOI

      10.1051/epjconf/20146606014

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Dihadron fragmentation functions in the NJL-jet model2014

    • Author(s)
      H. Matevosyan, W. Bentz, A.W. Thomas
    • Journal Title

      RIKEN Accel. Prog. Rep.

      Volume: 47 Pages: 1-1

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Dihadron fragmentation functions within the Nambu-Jona-Lasinio-jet model2013

    • Author(s)
      H. H.Matevosyan, A.W. Thomas, W. Bentz
    • Journal Title

      Physical Review D

      Volume: 88 Issue: 9

    • DOI

      10.1103/physrevd.88.094022

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Nucleon form factors in a covariant effective quark theory2013

    • Author(s)
      I.C. Cloet, W. Bentz, A.W. Thomas
    • Journal Title

      RIKEN Accel. Prog. Rep.

      Volume: 46 Pages: 82-82

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] Quark fragmentation functions in the NJL-jet model2014

    • Author(s)
      W. Bentz
    • Organizer
      Fourth joint meeting of the nuclear physics divisions of the American Physical Society and the Physical Society of Japan
    • Place of Presentation
      Waikoloa Village, Hawaii, USA
    • Year and Date
      2014-10-11
    • Related Report
      2014 Research-status Report
  • [Presentation] Dressed quark mass dependence of pion and kaon form factors2014

    • Author(s)
      Y. Ninomuya
    • Organizer
      Fourth joint meeting of the nuclear physics divisions of the American Physical Society and the Physical Society of Japan
    • Place of Presentation
      Waikoloa Village, Hawaii, USA
    • Year and Date
      2014-10-10
    • Related Report
      2014 Research-status Report
  • [Presentation] The EMC effect in spin structure functions2014

    • Author(s)
      W.K. Brooks et al
    • Organizer
      42nd program advisory committee (PAC42) meeting
    • Place of Presentation
      Jefferson National Laboratory, Newport News, USA
    • Year and Date
      2014-07-28 – 2014-07-31
    • Related Report
      2014 Research-status Report
  • [Remarks] Quark-jet model for TMD fragmentation functions

    • URL

      http://arxiv.org/pdf/1603.08333.pdf

    • Related Report
      2015 Annual Research Report

URL: 

Published: 2014-07-25   Modified: 2019-07-29  

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