Regge-like relation and a universal description of heavy-light systems

doi:10.1140/epjc/s10052-017-5512-3

	Regge-like relation and a universal description of heavy-light systems
	Lv QF(吕齐放); Dong, YB; Liu, X; Lu, QF; Matsuki, T; Chen, K; Dong YB(董宇兵)
刊名	EUROPEAN PHYSICAL JOURNAL C
	2018
卷号	78 期号:1 页码:20
ISSN号	1434-6044
DOI	10.1140/epjc/s10052-017-5512-3
文献子类	Article
英文摘要	Using the Regge-like formula (M - m(Q))(2) = pi sigma L between hadron mass M and angular momentum L with a heavy quark mass mQ and a string tension sigma, we analyze all the heavy-light systems, i.e., D/D-s/B/B-s mesons and charmed and bottom baryons. Numerical plots are obtained for all the heavy-light mesons of experimental data whose slope becomes nearly equal to 1/2 of that for light hadrons. Assuming that charmed and bottom baryons consist of one heavy quark and one light cluster of two light quarks (diquark), we apply the formula to all the heavy-light baryons including the recently discovered Omega(c) and find that these baryons experimentally measured satisfy the above formula. We predict the average mass values of B, B-s, Lambda(b), Lambda(c), Xi(c), and Omega(c) with L = 2 to be 6.01, 6.13, 6.15, 3.05, 3.07, and 3.34 GeV, respectively. Our results on baryons suggest that these baryons can be safely regarded as heavy quark-light cluster configuration. We also find a universal description for all the heavy-light mesons as well as baryons, i.e., one unique line is enough to describe both of charmed and bottom heavy-light systems. Our results suggest that instead of mass itself, gluon flux energy is essential to obtain a linear trajectory. Our method gives a straight line for B-c although the curved parent Regge trajectory was suggested before.
电子版国际标准刊号	1434-6052
WOS关键词	QUARK-MODEL ; BARYONS ; MESONS ; DEGENERACY
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:000422661200002
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285537]
专题	高能物理研究所_理论物理室高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Lv QF,Dong, YB,Liu, X,et al. Regge-like relation and a universal description of heavy-light systems[J]. EUROPEAN PHYSICAL JOURNAL C,2018,78(1):20.
APA	吕齐放.,Dong, YB.,Liu, X.,Lu, QF.,Matsuki, T.,...&董宇兵.(2018).Regge-like relation and a universal description of heavy-light systems.EUROPEAN PHYSICAL JOURNAL C,78(1),20.
MLA	吕齐放,et al."Regge-like relation and a universal description of heavy-light systems".EUROPEAN PHYSICAL JOURNAL C 78.1(2018):20.