Approximate neutrino oscillations in the vacuum

doi:10.1140/epjc/s10052-021-09110-y

	Approximate neutrino oscillations in the vacuum
	Emilio Ciuffoli 3; Jarah Evslin 3; Hosam Mohammed 3
刊名	The European Physical Journal C
	2021-04-01
卷号	81 期号:4 页码:17
ISSN号	1434-6044
DOI	10.1140/epjc/s10052-021-09110-y
通讯作者	Evslin, Jarah(jarah@impcas.ac.cn)
英文摘要	It is well known that neutrino oscillations may damp due to decoherence caused by the separation of mass eigenstate wave packets or by a baseline uncertainty of order the oscillation wave length. In this note we show that if the particles created together with the neutrino are not measured and do not interact with the environment, then the first source of decoherence is not present. This demonstration uses the saddle point approximation and also assumes that the experiment lasts longer than a certain threshold. We independently derive this result using the external wave packet model and also using a model in which the fields responsible for neutrino production and detection are treated dynamically. Intuitively this result is a consequence of the fact that the neutrino emission time does not affect the final state and so amplitudes corresponding to distinct emission times must be added coherently. This fact also implies that oscillations resulting from mass eigenstates which are detected simultaneously arise from neutrinos which were not created simultaneously but are nonetheless coherent, realizing the neutrino oscillation paradigm of Kobach, Manohar and McGreevy.
资助项目	CAS Key Research Program of Frontier Sciences[QYZDY-SSW-SLH006] ; NSFC MianShang grants[11875296] ; NSFC MianShang grants[11675223] ; NSFC[11605247] ; Chinese Academy of Sciences Presidents International Fellowship Initiative Grant[2015PM063] ; Recruitment Program of High-end Foreign Experts
WOS关键词	COHERENCE ; STATES ; MODEL
WOS研究方向	Physics
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000641453500004
资助机构	CAS Key Research Program of Frontier Sciences ; NSFC MianShang grants ; NSFC ; Chinese Academy of Sciences Presidents International Fellowship Initiative Grant ; Recruitment Program of High-end Foreign Experts
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/136937]
专题	中国科学院近代物理研究所
作者单位	1.中国科学院大学 2.Beni-Suef University 3.Institute of Modern Physics, Chinese Academy of Sciences
推荐引用方式 GB/T 7714	Emilio Ciuffoli,Jarah Evslin,Hosam Mohammed. Approximate neutrino oscillations in the vacuum[J]. The European Physical Journal C,2021,81(4):17.
APA	Emilio Ciuffoli,Jarah Evslin,&Hosam Mohammed.(2021).Approximate neutrino oscillations in the vacuum.The European Physical Journal C,81(4),17.
MLA	Emilio Ciuffoli,et al."Approximate neutrino oscillations in the vacuum".The European Physical Journal C 81.4(2021):17.