Production cross sections of hyperons and charmed baryons from e(+)e(-) annihilation near root s=10.52 GeV

doi:10.1103/PhysRevD.97.072005

	Production cross sections of hyperons and charmed baryons from e(+)e(-) annihilation near root s=10.52 GeV
	Belle Collaboration
刊名	PHYSICAL REVIEW D
	2018
卷号	97 期号:7 页码:72005
ISSN号	2470-0010
DOI	10.1103/PhysRevD.97.072005
文献子类	Article
英文摘要	We measure the inclusive production cross sections of hyperons and charmed baryons from e(+)e(-) annihilation using a 800 fb(-1) data sample taken near the gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The feed-down contributions from heavy particles are subtracted using our data, and the direct production cross sections are presented for the first time. The production cross sections divided by the number of spin states for S = -1 hyperons follow an exponential function with a single slope parameter except for the Sigma(1385)(+) resonance. Suppression for Sigma(1385)(+) and Xi(1530)(0) hyperons is observed. Among the production cross sections of charmed baryons, a factor of 3 difference for Lambda(+)(c) states over Sigma(c) states is observed. This observation suggests a diquark structure for these baryons.
电子版国际标准刊号	2470-0029
WOS关键词	E+E-ANNIHILATION ; ENERGY REGION ; HEAVY QUARKS ; MASS-ENERGY ; FRAGMENTATION ; MESONS ; STATES ; DECAY ; MODEL
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
WOS记录号	WOS:000429456900003
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285815]
专题	高能物理研究所_实验物理中心
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	Belle Collaboration. Production cross sections of hyperons and charmed baryons from e(+)e(-) annihilation near root s=10.52 GeV[J]. PHYSICAL REVIEW D,2018,97(7):72005.
APA	Belle Collaboration.(2018).Production cross sections of hyperons and charmed baryons from e(+)e(-) annihilation near root s=10.52 GeV.PHYSICAL REVIEW D,97(7),72005.
MLA	Belle Collaboration."Production cross sections of hyperons and charmed baryons from e(+)e(-) annihilation near root s=10.52 GeV".PHYSICAL REVIEW D 97.7(2018):72005.