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Measurement of Absolute Amount of Anti-Quarks in Proton at SeaQuest Experiment

Research Project

Project/Area Number 25800133
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionTokyo Institute of Technology

Principal Investigator

Nakano Kenichi  東京工業大学, 理工学研究科, 助教 (20525779)

Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2015: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2014: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords陽子 / 反クォーク分布 / フレーバー非対称性 / Drell-Yan反応 / Drell-Yan 反応 / SeaQuest 実験 / ビーム強度測定器
Outline of Final Research Achievements

The Drell-Yan process from proton+proton and proton+deuteron reactions was measured using proton beam and liquid hydrogen/deuterium targets at Fermilab in USA. It is aimed at deriving the asymmetry and the absolute amounts of anti-up and anti-down quarks in the proton. Physics data were accumulated in three data-taking periods from H25/11 to H28/07 (planned), and in the first period a detector for absolute beam intensity was developed and installed. The physics data were analyzed and a preliminary result of the asymmetry of anti-up and anti-down quarks was obtained.

Report

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

    (18 results)

All 2015 2014 2013 Other

All Int'l Joint Research (2 results) Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results,  Open Access: 2 results,  Acknowledgement Compliant: 1 results) Presentation (8 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results) Remarks (2 results)

  • [Int'l Joint Research] Abilene Christian Univ./Argonne National Lab/Fermi National Accelerator Lab(米国)

    • Related Report
      2015 Annual Research Report
  • [Int'l Joint Research] Academia Sinica/Ling-Tung Univ.(Taiwan)

    • Related Report
      2015 Annual Research Report
  • [Journal Article] Progress in probing flavor asymmetry of antiquarks in protons in the E906/SeaQuest experiment at Fermilab2015

    • Author(s)
      K. Nagai, Y. Goto, Y. Miyachi, S. Miyasaka, K. Nakano, S. Nara, S. Sawada and T.-A. Shibata
    • Journal Title

      RIKEN Accel. Prog. Rep.

      Volume: 48 Pages: 123-123

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] FPGA-based trigger system for the Fermilab SeaQuest experiment2015

    • Author(s)
      Shiuan-Hal Shiu, Jinyuan Wu, Randall Evan McClellan, Ting-Hua Chang, Wen-Chen Chang, Yen-Chu Chen, Ron Gilman, Kenichi Nakano, Jen-Chieh Peng, Su-Yin Wang
    • Journal Title

      Nucl. Instrum. Meth.

      Volume: A802 Pages: 82-88

    • DOI

      10.1016/j.nima.2015.09.001

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] フェルミ研ドレル・ヤン実験 SeaQuest の現状 ─陽子内の反クォーク分布のフレーバー非対称性─2015

    • Author(s)
      中野健一, 澤田真也, 宮地義之
    • Journal Title

      高エネルギーニュース

      Volume: 34-2 Pages: 81-88

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Probing flavor asymmetry of antiquarks of the proton in the E906/SeaQuest experiment2014

    • Author(s)
      S. Miyasaka, Y. Goto, Y. Miyachi, K. Nagai, K. Nakano, S. Obata, F. Sanftl, S. Sawada and T.-A. Shibata
    • Journal Title

      RIKEN Accel. Prog. Rep.

      Volume: 47 Pages: 97-97

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Results of the commissioning run of E906/SeaQuest Drell-Yan experiment at the Fermilab2013

    • Author(s)
      S. Miyasaka, Y. Goto, Y. Kudo, Y. Miyachi, K. Nagai, K. Nakano, S. Obata, F. Sanftl, S. Sawada and T.-A. Shibata
    • Journal Title

      RIKEN Accel. Prog. Rep.

      Volume: 46 Pages: 78-78

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Drift chamber construction for Drell-Yan measurement in SeaQuest experiment at Fermilab2013

    • Author(s)
      K.Nagai, S. Obata, Y. Kudo, S. Miyasaka, Y. Goto, Y. Miyachi, K. Nakano, F. Sanftl, S. Sawada and T.-A. Shibata
    • Journal Title

      RIKEN Accel. Prog. Rep.

      Volume: 46 Pages: 206-206

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] TMD in Drell-Yan Experiments at Fermilab2015

    • Author(s)
      Kenichi Nakano
    • Organizer
      The 10th Circum-Pan-Pacific Symposium on High Energy Spin Physics (PacSpin2015)
    • Place of Presentation
      Taipei, Taiwan
    • Year and Date
      2015-10-08
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] SeaQuest 実験の Drell-Yan 反応を用いた陽子内の sea クォークのフレーバー非対称度の研究2015

    • Author(s)
      宮坂翔, 後藤雄二, 眞田塁, 澤田真也, Florian Sanftl, 柴田利明, 永井慧, 中野健一, 奈良旬平, 宮地義之, 他 SeaQuest Collaboration
    • Organizer
      日本物理学会 第70回年次大会
    • Place of Presentation
      早稲田大学
    • Year and Date
      2015-03-24
    • Related Report
      2014 Research-status Report
  • [Presentation] Measurement of Boer-Mulders Function via Drell-Yan Process by SeaQuest Experiment at Fermilab2014

    • Author(s)
      K. Nakano for E906/SeaQuest Collaboration
    • Organizer
      SPIN2014
    • Place of Presentation
      北京大学, 中国
    • Year and Date
      2014-10-24
    • Related Report
      2014 Research-status Report
  • [Presentation] Status of Physics Run of Fermilab SeaQuest Experiment2014

    • Author(s)
      K. Nakano
    • Organizer
      Meeting on High-energy hadron physics at J-PARC
    • Place of Presentation
      KEK 東海キャンパス
    • Related Report
      2013 Research-status Report
  • [Presentation] SeaQuest の本実験ビームタイムのスタートと実験の進行状況 I2014

    • Author(s)
      永井慧, 小畑滋希, 後藤雄二, 澤田真也, Florian Sanftl, 柴田利明, 中野健一, 宮地義之, 他 SeaQuest Collaboration
    • Organizer
      日本物理学会 第69回年次大会
    • Place of Presentation
      東海大学 湘南キャンパス
    • Related Report
      2013 Research-status Report
  • [Presentation] SeaQuest の本実験ビームタイムのスタートと実験の進行状況 II2014

    • Author(s)
      宮坂翔, 小畑滋希, 後藤雄二, 澤田真也, Florian Sanftl, 柴田利明, 永井慧, 中野健一, 宮地義之, 他 SeaQuest Collaboration
    • Organizer
      日本物理学会 第69回年次大会
    • Place of Presentation
      東海大学 湘南キャンパス
    • Related Report
      2013 Research-status Report
  • [Presentation] Experimental study with Drell-Yan process2014

    • Author(s)
      Kenichi Nakano
    • Organizer
      日本物理学会 第69回年次大会
    • Place of Presentation
      東海大学 湘南キャンパス
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] フェルミ研 SeaQuest 実験のコミッショニング結果と今後の実験計画2013

    • Author(s)
      澤田真也, 小畑滋希, 後藤雄二, Florian Sanftl, 柴田利明, 永井慧, 中野健一, 宮坂翔, 宮地義之, 他 SeaQuest Collaboration
    • Organizer
      日本物理学会 2013年秋季大会
    • Place of Presentation
      高知大学 朝倉キャンパス
    • Related Report
      2013 Research-status Report
  • [Remarks] 高エネルギー陽子・陽子反応におけるドレル・ヤン過程を用いた陽子内反クォークの研究

    • URL

      http://www.nucl.phys.titech.ac.jp/e906/

    • Related Report
      2015 Annual Research Report 2014 Research-status Report
  • [Remarks] 高エネルギー陽子・陽子反応におけるドレル・ヤン過程を用いた陽子内反クォークの研究

    • URL

      http://www.nucl.phys.titech.ac.jp/e906/

    • Related Report
      2013 Research-status Report

URL: 

Published: 2014-07-25   Modified: 2022-02-16  

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