Measurement of the Lambda(b) polarization and angular parameters in Lambda(b) -> J/psi Lambda decays from pp collisions at root s=7 and 8 TeV

doi:10.1103/PhysRevD.97.072010

CORC > 高能物理研究所 > 中国科学院高能物理研究所 > 粒子天体物理中心

	Measurement of the Lambda(b) polarization and angular parameters in Lambda(b) -> J/psi Lambda decays from pp collisions at root s=7 and 8 TeV
	CMS Collaboration
刊名	PHYSICAL REVIEW D
	2018
卷号	97 期号:7 页码:72010
ISSN号	2470-0010
DOI	10.1103/PhysRevD.97.072010
文献子类	Article
英文摘要	An analysis of the bottom baryon decay Lambda(b) -> J/psi(-> mu(+)mu(-))Lambda( -> p pi(-)) is performed to measure the Lambda(b) polarization and three angular parameters in data from pp collisions at root s = 7 and 8 TeV, collected by the CMS experiment at the Large Hadron Collider. The Lambda(b) polarization is measured to be 0.00 +/- 0.06(stat) +/- 0.06(syst) and the parity-violating asymmetry parameter is determined to be 0.14 +/- 0.14(stat) +/- 0.10(syst). The measurements are compared to various theoretical predictions, including those from perturbative quantum chromodynamics.
电子版国际标准刊号	2470-0029
WOS关键词	WEAK DECAYS ; BARYONS
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
WOS记录号	WOS:000430163500001
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285831]
专题	高能物理研究所_粒子天体物理中心
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	CMS Collaboration. Measurement of the Lambda(b) polarization and angular parameters in Lambda(b) -> J/psi Lambda decays from pp collisions at root s=7 and 8 TeV[J]. PHYSICAL REVIEW D,2018,97(7):72010.
APA	CMS Collaboration.(2018).Measurement of the Lambda(b) polarization and angular parameters in Lambda(b) -> J/psi Lambda decays from pp collisions at root s=7 and 8 TeV.PHYSICAL REVIEW D,97(7),72010.
MLA	CMS Collaboration."Measurement of the Lambda(b) polarization and angular parameters in Lambda(b) -> J/psi Lambda decays from pp collisions at root s=7 and 8 TeV".PHYSICAL REVIEW D 97.7(2018):72010.