Nonmaximal θ23 Mixing at NOvA from Neutrino Decoherence

被引：31

作者：

Coelho, Joao A. B. ^{[1
,2
]}

Mann, W. Anthony ^{[1
]}

Bashar, Saqib S. ^{[1
]}

机构：

[1] Tufts Univ, Dept Phys, Medford, MA 02155 USA

[2] Univ Paris Diderot, APC, CNRS, Sorbonne Paris Cite,IN2P3, F-75205 Paris, France

来源：

PHYSICAL REVIEW LETTERS | 2017年 / 118卷 / 22期

关键词：

OSCILLATIONS; DISSIPATION;

D O I：

10.1103/PhysRevLett.118.221801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In a study of a muon-neutrino disappearance at 810 km, the NOvA experiment finds flavor mixing of the atmospheric sector to deviate from maximal (sin(2) theta(23) = 0.5) by 2.6 sigma. The result is in tension with the 295-km baseline measurements of T2K, which are consistent with maximal mixing. We propose that theta(23) is in fact maximal, and that the disagreement is a harbinger of environmentally induced decoherence. The departure from maximal mixing can be accounted for by an energy-independent decoherence of strength Gamma = (2.3 +/- 1.1) x 10(-23) GeV.

引用

页数：6

共 34 条

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