Lepton number violation in D meson decay

	Lepton number violation in D meson decay
	Dong HR(董海荣); Dong, HR; Feng, F; Li, HB; 李海波(实)
刊名	CHINESE PHYSICS C
	2015
卷号	39 期号:1 页码:13101
关键词	Majorana neutrino D meson decay lepton number violating mixing matrix element
通讯作者	董海荣 ; 李海波（实）
英文摘要	The lepton number violation (LNV) process can be induced by introducing a fourth generation heavy Majorana neutrino, which is coupled to the charged leptons of the Standard Model (SM). There have been many previous studies on the leptonic number violating decay processes with this mechanism. We follow the trend to study the process: D -> Kll pi with the same-sign dilepton final states. We restrict ourselves to certain neutrino mass regions, in which the heavy neutrino could be on-shell and the dominant contribution to the branching fraction comes from the resonance enhanced effect. Applying the narrow width approximation (NWA), we found that the upper limit for the branching fractions for D-0 -> K(-)l(+)l(+)pi(-) are generally at the order of 10(-12) to 10(-9), if we take the most stringent upper limit bound currently available in the literature for the mixing matrix elements. We also provide the constraints, which is competitive compared to the LNV B decays, on the mixing matrix element vertical bar V-eN vertical bar(2) based on the upper limit of D-0 -> K(-)e(+)e(-)pi(-) estimated from the Monte-Carlo (MC) study at BESIII. Although the constraints are worse than the ones from (0 nu beta beta) decay in the literature, the future experiment at the charm factory may yield more stringent constraints.
学科主题	Physics
类目[WOS]	Physics, Nuclear ; Physics, Particles & Fields
收录类别	SCI ; CA
WOS记录号	WOS:000347762100002
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/228187]
专题	高能物理研究所_实验物理中心
推荐引用方式 GB/T 7714	Dong HR,Dong, HR,Feng, F,et al. Lepton number violation in D meson decay[J]. CHINESE PHYSICS C,2015,39(1):13101.
APA	董海荣,Dong, HR,Feng, F,Li, HB,&李海波.(2015).Lepton number violation in D meson decay.CHINESE PHYSICS C,39(1),13101.
MLA	董海荣,et al."Lepton number violation in D meson decay".CHINESE PHYSICS C 39.1(2015):13101.