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Approximate neutrino oscillations in the vacuum

文献类型：期刊论文

作者Emilio Ciuffoli3; Jarah Evslin3; Hosam Mohammed3
刊名The European Physical Journal C
出版日期2021-04-01
卷号81期号:4页码:17
ISSN号1434-6044
DOI10.1140/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.
WOS关键词COHERENCE ; STATES ; MODEL
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研究方向Physics
语种英语
WOS记录号WOS:000641453500004
出版者SPRINGER
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
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.

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来源：近代物理研究所

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