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	Polarization observables in e(+) e(-) annihilation to a baryon-antibaryon pair
	Perotti, Elisabetta1; Faldt, Goran1; Kupsc, Andrzej1; Leupold, Stefan1; Song, Jiao Jiao2,3
刊名	Physical review d
	2019-03-18
卷号	99期号:5页码:16
ISSN号	2470-0010
DOI	10.1103/physrevd.99.056008
通讯作者	Perotti, elisabetta()
英文摘要	Using the helicity formalism of jacob and wick, we derive spin density matrices of baryon antibaryon pairs produced in e(+)e(-) annihilation. we consider the production of pairs with spins 1/2 + (1/2) over bar, 1/2 + (3/2) over bar (+c.c.) and 3/2 + (3/2) over bar. we provide modular expressions to include chains of weak hadronic two-body decays of the produced hyperons. the expressions are suitable for the analysis of high statistics data from j/psi and psi(2s) ecays at e(+) e(-) colliders, by fits to the fully differential angular distributions of the measured particles. we illustrate the method by examples, such as the inclusive measurement of the e(+) e(-) -> psi(2s) -> omega(-)(omega) over bar (+) process where one decay chain omega(-) -> ak(-) followed by a -> p pi(-) is considered. finally, we show that the inclusive angular distributions can be used to test spin assignment of the produced baryons.
资助项目	Chinese Academy of Science President's International Fellowship Initiative (PIFI)
WOS关键词	J/PSI
WOS研究方向	Astronomy & Astrophysics ; Physics
WOS类目	Astronomy & Astrophysics ; Physics, Particles & Fields
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000461907100009
资助机构	Chinese Academy of Science President's International Fellowship Initiative (PIFI)
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2160929
专题	高能物理研究所
通讯作者	Perotti, Elisabetta
作者单位	1.Uppsala Univ, Dept Phys & Astron, Box 516, SE-75120 Uppsala, Sweden 2.Shandong Univ, Jinan 250100, Shandong, Peoples R China 3.Inst High Energy Phys, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Perotti, Elisabetta,Faldt, Goran,Kupsc, Andrzej,et al. Polarization observables in e(+) e(-) annihilation to a baryon-antibaryon pair[J]. Physical review d,2019,99(5):16.
APA	Perotti, Elisabetta,Faldt, Goran,Kupsc, Andrzej,Leupold, Stefan,&Song, Jiao Jiao.(2019).Polarization observables in e(+) e(-) annihilation to a baryon-antibaryon pair.Physical review d,99(5),16.
MLA	Perotti, Elisabetta,et al."Polarization observables in e(+) e(-) annihilation to a baryon-antibaryon pair".Physical review d 99.5(2019):16.

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