A possible NN*(1440) quasi-molecular state

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	*A possible NN(1440) quasi-molecular state**
	Zou, BS
刊名	EUROPEAN PHYSICAL JOURNAL A
	2013
卷号	49 期号:5 页码:59
关键词	MESON ENHANCEMENTS
ISSN号	1434-6001
通讯作者	Zhao, L (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
英文摘要	Inspired by the recent observation of a narrow resonance-like structure around 2360 MeV in the pn -> d pi(0)pi(0) cross section, the possibility of forming a NN(1440) quasi-molecular state is investigated by using a meson exchange model in which the pi, sigma, rho and omega exchanges in t- and u-channels are considered. By adopting the coupling constants extracted from the relevant NN scattering and N(1440) decay data, it is found that a deuteron-like quasi-molecular state of NN(1440) with a binding energy in the range of 2 similar to 67 MeV can be formed. Therefore, it is speculated that the observed structure around 2360 MeV might be or may have a large component of the NN(1440) quasi-molecular state.
学科主题	Physics
收录类别	SCI
资助信息	National Natural Science Foundation of China [10975038, 11035006, 11165005, 11121092, 11261130311]; DFG [CRC110]; NSFC; Chinese Academy of Sciences [KJCX2-EW-N01]; Ministry of Science and Technology of China [2009CB825200]
原文出处	http://dx.doi.org/10.1140/epja/i2013-13059-x
语种	英语
WOS记录号	WOS:000321430600002
公开日期	2014-04-25
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/15376]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Zou, BS. A possible NN*(1440) quasi-molecular state[J]. EUROPEAN PHYSICAL JOURNAL A,2013,49(5):59.
APA	Zou, BS.(2013).A possible NN*(1440) quasi-molecular state.EUROPEAN PHYSICAL JOURNAL A,49(5),59.
MLA	Zou, BS."A possible NN*(1440) quasi-molecular state".EUROPEAN PHYSICAL JOURNAL A 49.5(2013):59.