Distinguishing Dirac/Majorana sterile neutrinos at the LHC

doi:10.1103/PhysRevD.94.013005

	Distinguishing Dirac/Majorana sterile neutrinos at the LHC
	Dib, CO; Kim, CS; Wang KC(王科臣); Zhang J(张珏); Wang, KC; Zhang, J
刊名	PHYSICAL REVIEW D
	2016
卷号	94 期号:1
DOI	10.1103/PhysRevD.94.013005
通讯作者	王科臣 ; 张珏
文献子类	Article
英文摘要	We study the purely leptonic decays of W-+/- -> e(+/-)e(+/-)mu(-/+)nu and mu +/-mu +/- e -/+nu produced at the LHC, induced by sterile neutrinos with mass m(N) below M-W in the intermediate state. Since the final state neutrino escapes detection, one cannot tell whether this process violates lepton number, which would indicate a Majorana character for the intermediate sterile neutrino. Our study shows that when the sterile neutrino mixings with electrons and muons are different enough, one can still discriminate between the Dirac and Majorana character of this intermediate neutrino by simply counting and comparing the above decay rates. After performing collider simulations and statistical analysis, we find that at the 14 TeV LHC with an integrated luminosity of 3000 fb(-1), for two benchmark scenarios m(N) = 20 and 50 GeV, at least a 3 sigma level of exclusion on the Dirac case can be achieved for disparities as mild as, e.g., vertical bar U-Ne vertical bar(2) < 0.7 vertical bar U-N mu vertical bar(2) or vertical bar U-N mu vertical bar(2) < 0.7 vertical bar U-Ne vertical bar(2), provided that vertical bar U-Ne vertical bar(2) and vertical bar U-N mu vertical bar(2) are both above similar to 2 x 10(-6).
WOS关键词	LEPTON FLAVOR VIOLATION ; MAJORANA NEUTRINOS ; NUMBER ; DECAYS
语种	英语
WOS记录号	WOS:000379721900005
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/260609]
专题	高能物理研究所_理论物理室
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	Dib, CO,Kim, CS,Wang KC,et al. Distinguishing Dirac/Majorana sterile neutrinos at the LHC[J]. PHYSICAL REVIEW D,2016,94(1).
APA	Dib, CO,Kim, CS,王科臣,张珏,Wang, KC,&Zhang, J.(2016).Distinguishing Dirac/Majorana sterile neutrinos at the LHC.PHYSICAL REVIEW D,94(1).
MLA	Dib, CO,et al."Distinguishing Dirac/Majorana sterile neutrinos at the LHC".PHYSICAL REVIEW D 94.1(2016).