QQ客服 官方微博 反馈留言

	Doubly-heavy baryon weak decays: xi(0)(bc) -> pk(-) and xi(+)(cc) -> sigma(++)(c)(2520)k-
	Li, Run-Hui1; Lu, Cai-Dian2,3; Wang, Wei4; Yu, Fu-Sheng5,6,7; Zou, Zhi-Tian8
刊名	Physics letters b
	2017-04-10
卷号	767页码:232-235
关键词	Doubly-heavy baryons Electro-weak decays Branching ratios W-exchange process
ISSN号	0370-2693
DOI	10.1016/j.physletb.2017.02.003
通讯作者	Li, run-hui(lirh@imu.edu.cn)
英文摘要	Doubly-heavy baryons, with two heavy and one light quarks, are expected to exist in qcd and their masses have been predicted in the quark model. however their existence is not well established so far in experiment. in this work, we explore the possibility of searching for xi(bc) and xi(+)(cc) ccin the w-exchange processes, xi(0)(bc) -> pk(-) and xi(+)(cc) -> sigma(++)(c) -> (2520) k-. on the basis of perturbative calculations, we estimate the branching ratio of the first decay as br(xi(0)(bc)-> p(+) k-) approximate to 3.21 xr(f)(2)xr tau x10(-7), where r-f(r-tau) are the ratios of the decay constants (lifetimes) of xi(0)(bc) and lambda(0)(b). the branching ratio of xi(+)(cc) -> sigma(++)(c) (2520) k- is related to that of lambda(+)(c)-> delta(++) k-, and thereby a conjectured topology analysis leads to the range for the branching ratio as: br(xi(+)(cc) -> sigma(++)(c)(2520) k-) is an element of[0.36%, 1.80%]. the decay xi(+)(cc) -> sigma(++)(c) (2520) k- would be reconstructed in the lambda k-+(c)-pi(+) final state which is easy to access even at a hadron collider. based on the two facts that abundant heavy quarks can be produced at a hadron collider like lhc, and the branching ratios of xi(0)(bc)-> pk(-) and xi(+)(cc) -> sigma(++)(c) (2520) k- are sizable, we urge our experimental colleagues to perform a search at lhcb. this will presumably lead to the discovery of the xi(bc) and xi(+)(cc), and precision measurements of the branching ratios in the future are helpful to investigate their decay mechanism. (c) 2017 the author(s). published by elsevier b.v.
WOS关键词	RELATIVISTIC QUARK-MODEL ; CHARMED BARYONS ; HADRONIC PRODUCTION ; INTRINSIC CHARM ; SUM-RULES ; XI(CC) ; GENERATOR ; XI(BB) ; MASSES
WOS研究方向	Astronomy & Astrophysics ; Physics
WOS类目	Astronomy & Astrophysics ; Physics, Nuclear ; Physics, Particles & Fields
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000397861700035
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2176677
专题	高能物理研究所
通讯作者	Li, Run-Hui
作者单位	1.Inner Mongolia Univ, Sch Phys Sci & Technol, Hohhot 010021, Peoples R China 2.Inst High Energy Phys, YuquanLu 19B, Beijing 100049, Peoples R China 3.Univ Chinese Acad Sci, Sch Phys, YuquanLu 19A, Beijing 100049, Peoples R China 4.Shanghai Jiao Tong Univ, INPAC, Dept Phys & Astron, Shanghai Key Lab Particle Phys & Cosmol, Shanghai 200240, Peoples R China 5.Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China 6.Lanzhou Univ, Res Ctr Hadron & CSR Phys, Lanzhou 730000, Peoples R China 7.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 8.Yantai Univ, Dept Phys, Yantai 264055, Peoples R China
推荐引用方式 GB/T 7714	Li, Run-Hui,Lu, Cai-Dian,Wang, Wei,et al. Doubly-heavy baryon weak decays: xi(0)(bc) -> pk(-) and xi(+)(cc) -> sigma(++)(c)(2520)k-[J]. Physics letters b,2017,767:232-235.
APA	Li, Run-Hui,Lu, Cai-Dian,Wang, Wei,Yu, Fu-Sheng,&Zou, Zhi-Tian.(2017).Doubly-heavy baryon weak decays: xi(0)(bc) -> pk(-) and xi(+)(cc) -> sigma(++)(c)(2520)k-.Physics letters b,767,232-235.
MLA	Li, Run-Hui,et al."Doubly-heavy baryon weak decays: xi(0)(bc) -> pk(-) and xi(+)(cc) -> sigma(++)(c)(2520)k-".Physics letters b 767(2017):232-235.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。