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	Observation of the suppressed decay lambda(0)(b) -> p pi(-) mu(+) mu(-)
	Aaij, R.40; Adeva, B.39; Adinolfi, M.48; Ajaltouni, Z.5; Akar, S.59; Albrecht, J.10; Alessio, F.40; Alexander, M.53; Ali, S.43; Alkhazov, G.31
刊名	Journal of high energy physics
	2017-04-06
期号	4页码:16
关键词	B physics Branching fraction Flavour changing neutral currents Hadron-hadron scattering (experiments) Rare decay
ISSN号	1029-8479
DOI	10.1007/jhep04(2017)029
通讯作者	Aaij, r.()
英文摘要	The suppressed decay lambda(0)(b) -> p pi(-) mu(+) mu(-), excluding the j/psi and psi(2s) -> mu(+) mu(-) resonances, is observed for the first time with a significance of 5.5 standard deviations. the analysis is performed with proton- proton collision data corresponding to an integrated luminosity of 3 fb(-1) collected with the lhcb experiment. the lambda(0)(b) -> p pi(-) mu(+) mu(-) branching fraction is measured relative to the lambda(0)(b) -> j/psi (-> mu(+) mu(-)) p pi(-) branching fraction giving b (lambda(0)(b) -> p pi(-) mu(+) mu(-))/b(lambda(0)(b) -> j/psi (-> mu(+) mu(-)) p pi(-)) = 0.044 +/- 0.012 +/- 0.007, where the first uncertainty is statistical and the second is systematic. this is the first observation of a b -> d transition in a baryonic decay.
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:000399274800001
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2177454
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 Savoie Mont Blanc, CNRS, IN2P3, LAPP, Annecy Le Vieux, France 5.Univ Blaise Pascal, Clermont Univ, CNRS, IN2P3,LPC, Clermont Ferrand, France 6.Aix Marseille Univ, CNRS, IN2P3, CPPM, Marseille, France 7.Univ Paris 11, CNRS, IN2P3, LAL, Orsay, France 8.Univ Paris Diderot, Univ Pierre & Marie Curie, CNRS, IN2P3,LPNHE, Paris, France 9.Rhein Westfal TH Aachen, I Phys Inst, 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. Observation of the suppressed decay lambda(0)(b) -> p pi(-) mu(+) mu(-)[J]. Journal of high energy physics,2017(4):16.
APA	Aaij, R..,Adeva, B..,Adinolfi, M..,Ajaltouni, Z..,Akar, S..,...&Zucchelli, S..(2017).Observation of the suppressed decay lambda(0)(b) -> p pi(-) mu(+) mu(-).Journal of high energy physics(4),16.
MLA	Aaij, R.,et al."Observation of the suppressed decay lambda(0)(b) -> p pi(-) mu(+) mu(-)".Journal of high energy physics .4(2017):16.

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