2013 Fiscal Year Final Research Report
Search for Charm/Bottom Nuclei and Heavy Hadron Spectroscopy
| Project/Area Number |
22740174
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Nishogakusha University |
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Principal Investigator |
SUDOH Kazutaka 二松學舍大學, 国際政治経済学部, 准教授 (40360573)
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| Project Period (FY) |
2010-04-01 – 2014-03-31
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| Keywords | ハドロン物理学 / 重いクォーク |
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| Research Abstract |
We study new states of hadrons and nuclei including a heavy quark, charm and bottom. Comparison with the light quark sector, a new symmetry called "heavy quark symmetry" is realized. Respecting the heavy quark symmetry, we construct a heavy meson effective theory in which a systematic expansion by 1/M, M is a heavy quark mass, can be done.
Several types of heavy hadrons, DD, DDbar, BB, BBbar, D/B in nuclei, have been studied in the framework of the heavy meson effective theory. In addition, we calculated the differential cross section of double charm tetraquark production in e+e- collisions. We demonstrated that the heavy quark degrees of freedom in nuclear medium is interesting in research of gluon dynamics in medium.
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