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(Seminar) The Normal Neutrino Mass Hierarchy is Exactly What We Need!
2019-11-12  【 】【打印】【关闭

CAS Key Laboratory of Theoretical Physics

Institute of Theoretical Physics

Chinese Academy of Sciences

Seminar

Title

题目

The Normal Neutrino Mass Hierarchy is Exactly What We Need!

Speaker

报告人

Shoo-Feng Ge (葛绍峰)

Affiliation

所在单位

Tsung-Dao Lee Institute and Shanghai Jiao Tong University

Date

日期

3:00pm, Nov 12, 2019, Tuesday

Venue

地点

ITP South Building 6420

Abstract

摘要

The preference of the normal neutrino mass hierarchy from the recent cosmological constraints and the global fits of neutrino oscillation experiments does not seem like a wise choice at first glance since it obscures the neutrinoless double beta decay and hence the Majorana nature of neutrinos. Contrary to this naive expectation, we point out that the actual situation is the opposite. Choosing the normal mass hierarchy opens up the possibility of determining the solar octant and simultaneously measuring the two Majorana CP phases. If the neutrino mass hierarchy is normal, the funnel region would completely disappear if the solar mixing angle lives in the higher octant. With a typical O(meV) sensitivity on the effective mass |mee|, the neutrinoless double beta decay experiment can tell if the funnel region really exists and hence if the solar octant takes the higher octant. With the sensitivity further improved to sub-meV, the two Majorana CP phases can be simultaneously determined. We need the normal neutrino mass hierarchy with very good reasons. 

Contact Person

所内联系人

于江浩
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