| Project/Area Number |
26247032
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Yamagata University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
松田 達郎 宮崎大学, 工学部, 教授 (20253817)
宮地 義之 山形大学, 理学部, 准教授 (50334511)
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| Co-Investigator(Renkei-kenkyūsha) |
DOSHITA NORIHIRO 山形大学, 理学部, 助教 (90451658)
KONDO KAORI 山形大学, 理学部, 助教 (80451657)
HASHIMOTO RYOU 山形大学, 理学部, プロジェクト研究員 (50644952)
HORIKAWA NAOAKI 中部大学, 工学部, 教育支援員 (70022697)
SUZUKI HAJIME 中部大学, 工学部, 教授 (20260044)
SHIGERU ISHIMOTO KEK, 素粒子原子核研究所, 技術支援員 (50141974)
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| Project Period (FY) |
2014-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥40,950,000 (Direct Cost: ¥31,500,000、Indirect Cost: ¥9,450,000)
Fiscal Year 2017: ¥10,140,000 (Direct Cost: ¥7,800,000、Indirect Cost: ¥2,340,000)
Fiscal Year 2016: ¥9,750,000 (Direct Cost: ¥7,500,000、Indirect Cost: ¥2,250,000)
Fiscal Year 2015: ¥10,010,000 (Direct Cost: ¥7,700,000、Indirect Cost: ¥2,310,000)
Fiscal Year 2014: ¥11,050,000 (Direct Cost: ¥8,500,000、Indirect Cost: ¥2,550,000)
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| Keywords | 核子スピン / 核子スピン構造 / 偏極ドレルヤン / GPD / QCD / クォーク / グルーオン / ＣＯＭＰＡＳＳ / ＣＥＲＮ / 偏極ターゲット / ＱＣＤ |
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| Outline of Final Research Achievements |
This study is on the orbital angular momentum(OAM) contribution of quarks to the nucleon spin, which is a key for the decomposition of the nucleon spin. We performed the first ever polarized Drell-Yan experiment to measure the asymmetry of the reaction with a negative charged pion beam incident on a polarized proton target. The results are consistent with the prediction of the perturbative QCD and suggest presence of the OAM. In addition, we performed a measurement for deeply virtual compton scattering(DVCS) with a 190GeV muon beam on a proton target to extract the generalized parton distribution(GPD) which is important information to study the OAM contribution.
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