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	A measurement of the cp asymmetry difference between lambda(+)(c) -> pk(-)k(+) and p pi(-)pi(+) decays
	Aaij, R.41; Adeva, B.40; Adinolfi, M.49; Ajaltouni, Z.5; Akar, S.60; Albrecht, J.10; Alessio, F.41; Alexander, M.54; Albero, A. Alfonso39,72; Ali, S.73
刊名	Journal of high energy physics
	2018-03-29
期号	3页码:21
关键词	Charm physics Cp violation Flavor physics Hadron-hadron scattering (experiments)
ISSN号	1029-8479
DOI	10.1007/jhep03(2018)182
通讯作者	Aaij, r.()
英文摘要	The difference between the cp asymmetries in the decays lambda(+)(c) -> pk(-)k(+) and lambda(+)(c) -> p pi(-)pi(+) is presented. proton-proton collision data taken at centre-of-mass energies of 7 and 8 tev collected by the lhcb detector in 2011 and 2012 are used, corresponding to an integrated luminosity of 3 fb(-1). the lambda(+)(c) candidates are reconstructed as part of the lambda(0)(b) -> lambda(+)(c)mu x- decay chain. in order to maximize the cancellation of production and detection asymmetries in the difference, the final-state kinematic distributions of the two samples are aligned by applying phase-space-dependent weights to the lambda(+)(c) -> pk(-)k(+) sample. this alters the definition of the integrated cp asymmetry to a(cp)(wgt)(p pi(-)pi(+)). both samples are corrected for reconstruction and selection efficiencies across the five-dimensional lambda(+)(c) decay phase space. the difference in cp asymmetries is found to be delta a(cp)(wgt) = a(cp)(pk(-)k(+)) - a(cp)(wgt)(p pi(-)pi(+)) = (0.30 +/- 0.91 +/- 0.61) %, where the first uncertainty is statistical and the second is systematic.
WOS关键词	TOOL
WOS研究方向	Physics
WOS类目	Physics, Particles & Fields
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000430567200002
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2178203
专题	高能物理研究所
通讯作者	Aaij, R.
作者单位	1.CBPF, Rio De Janeiro, Brazil 2.Univ Fed Rio de Janeiro, Rio de Janeiro, Brazil 3.Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China 4.Univ Grenoble Alpes, Univ Savoie Mt Blanc, CNRS, IN2P3,LAPP, Annecy, France 5.Clermont Univ, Univ Blaise Pascal, CNRS, IN2P3,LPC, Clermont Ferrand, France 6.Aix Marseille Univ, CNRS, IN2P3, CPPM, Marseille, France 7.Univ Paris Saclay, Univ Paris Sud, CNRS, IN2P3,LAL, Orsay, France 8.Univ Paris 06, Univ Paris Diderot, CNRS, IN2P3,LPNHE, Paris, France 9.Rhein Westfal TH Aachen, Phys Inst 1, Aachen, Germany 10.Tech Univ Dortmund, Fak Phys, Dortmund, Germany
推荐引用方式 GB/T 7714	Aaij, R.,Adeva, B.,Adinolfi, M.,et al. A measurement of the cp asymmetry difference between lambda(+)(c) -> pk(-)k(+) and p pi(-)pi(+) decays[J]. Journal of high energy physics,2018(3):21.
APA	Aaij, R..,Adeva, B..,Adinolfi, M..,Ajaltouni, Z..,Akar, S..,...&Zucchelli, S..(2018).A measurement of the cp asymmetry difference between lambda(+)(c) -> pk(-)k(+) and p pi(-)pi(+) decays.Journal of high energy physics(3),21.
MLA	Aaij, R.,et al."A measurement of the cp asymmetry difference between lambda(+)(c) -> pk(-)k(+) and p pi(-)pi(+) decays".Journal of high energy physics .3(2018):21.

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