Charge-symmetry breaking of parton distribution functions and flavor-asymmetry of sea-quark distributions
| Project/Area Number |
21540268
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 | Osaka University |
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Principal Investigator |
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 核子の内部構造 / カイラル対称性 / 海クォーク分布 / 荷電非対称性 / 深部非弾性散乱 / NuTeVアノマリー / ストレンジ・クォーク分布 / 荷電対称性 / 反クォーク分布 / 核子スピン分解 / ゲージ不変性 / 観測可能性 |
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| Research Abstract |
We investigated the effects of charge-symmetry breaking and flavor-symmetry breaking on the quark and antiquark distribution functions in a unified manner within the framework of the chiral quark soliton model. Different from the past analysis based on a naive model, we find that the effect of strange and anti-strange quark asymmetry is more than a factor of 5 larger than the charge-symmetry breaking effects.
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Report
(4 results)
Research Products
(50 results)
