Hint of CPT violation in short-baseline electron neutrino disappearance data

被引：25

作者：

Giunti, Carlo ^{[1
,4
]}

Laveder, Marco ^{[2
,3
]}

机构：

[1] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy

[2] Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy

[3] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy

[4] Univ Turin, Dept Theoret Phys, I-10124 Turin, Italy

来源：

PHYSICAL REVIEW D | 2010年 / 82卷 / 11期

关键词：

SEARCH; OSCILLATIONS; LSND; PHENOMENOLOGY; REACTOR; MASS;

D O I：

10.1103/PhysRevD.82.113009

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We analyzed the electron neutrino data of the Gallium radioactive source experiments and the electron antineutrino data of the reactor Bugey and Chooz experiments in terms of neutrino oscillations allowing for a CPT-violating difference of the squared masses and mixings of neutrinos and antineutrinos. We found that the discrepancy between the disappearance of electron neutrinos indicated by the data of the Gallium radioactive source experiments and the limits on the disappearance of electron antineutrinos given by the data of reactor experiments reveal a positive CPT-violating asymmetry of the effective neutrino and antineutrino mixing angles (with a statistical significance of about 3.5 sigma), whereas the squared-mass asymmetry is practically not bounded.

引用

页数：4

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