New Developments in the Investigation of the Nucleon Spin Structure with Spin Polarized Proton Collisions

2010 Fiscal Year Final Research Report

• Project/Area Number: 18GS0210
• Research Category: Grant-in-Aid for Creative Scientific Research
• Allocation Type: Single-year Grants
• Research Institution: High Energy Accelerator Research Organization
• Principal Investigator: SAITO Naohito 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 教授 (20321763)
• Co-Investigator(Kenkyū-buntansha): MURAKAMI Tetsuya 京都大学, 大学院・理学研究科, 助教 (50219896) ; MURATA Jiro 立教大学, 理学部, 教授 (50360649) ; TAKETANI Atsushi 理化学研究所, 延與放射線研究室, 先任研究員 (30222095) ; KURITA Kazuyoshi 立教大学, 理学部, 准教授 (90234559)
• Research Collaborator: TANIDA Kiyoshi ソウル大学, 准教授
• Project Period (FY): 2006 – 2010
• Keywords: スピン / 核子構造 / クォーク / 強い相互作用 / 弱い相互作用

Research Abstract

We have developed an event selection system for PHENIX experiment at the only polarized proton-proton collider in the world. The main purpose of the project is to understand the structure of the proton, which is the fundamental constituents of the matter, which includes ourselves, from the viewpoint of the important characteristic of an elementary particle, spin. This new system has opened a new era of the proton spin-structure studies to measure the spin polarization of sea quarks directly, by means of weak boson production in polarized proton-proton collision for the first time in the world.

Research Products

• [Journal Article] (2011)
  • Author(s): A. Adare, K. Kurita, T. Murakami, J. Murata, N. Saito, K. Tanida, ほか
  • Journal Title: Physical Review Letteer Volume: 106 Pages: 062001
• [Journal Article] (2009)
  • Author(s): A. Adare, K. Kurita, T. Murakami, J. Murata, N. Saito, K. Tanida, ほか
  • Journal Title: Physical Review Volume: D79 Pages: 012003
• [Journal Article] (2009)
  • Author(s): A. Adare, K. Kurita, T. Murakami, J. Murata, N. Saito, K. Tanida, ほか
  • Journal Title: Physical Review Letter Volume: 103 Pages: 012003
• [Presentation] High Energy Spin Physics (2011)
  • Author(s): 中川格(NAKAGAWA ITARU)
  • Organizer: Circum-Pan-Pacific Symposium
  • Place of Presentation: オーストラリア・アデレイド大学
  • Year and Date: 2011-06-24
• [Presentation] (2010)
  • Author(s): 深尾祥紀(FUKAO YOSHINORI)
  • Organizer: BNL W Physics Workshop
  • Year and Date: 20100624-25
• [Presentation] (2009)
  • Author(s): 齊藤直人(SAITO NAOHITO)
  • Organizer: XXIX International Symposium on Physics in Collision
  • Place of Presentation: 神戸大学
  • Year and Date: 20090830-0902
• [Remarks] ホームページ等実験のホームページ
  • URL: http://www.phenix.bnl.gov
• [Remarks] W生成に関する論文発表のページ
  • URL: http://www.bnl.gov/bnlweb/pubaf/pr/PR_display.asp?prID=1232