Pseudoscalar - sterile neutrino interactions: reconciling the cosmos with neutrino oscillations

被引：87

作者：

Archidiacono, Maria ^{[1
]}

Gariazzo, Stefano ^{[2
,3
]}

Giunti, Carlo ^{[3
]}

Hannestad, Steen ^{[4
]}

Hansen, Rasmus ^{[5
]}

Laveder, Marco ^{[6
,7
]}

Tram, Thomas ^{[8
]}

机构：

[1] Rhein Westfal TH Aachen, Inst Theoret Particle Phys & Cosmol TTK, D-52056 Aachen, Germany

[2] Univ Turin, Dept Phys, Via P Guria 1, I-10125 Turin, Italy

[3] Ist Nazl Fis Nucl, Sez Torino, Via P Guria 1, I-10125 Turin, Italy

[4] Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark

[5] Max Planck Inst Kernphys, Saupfercheckweg 1, D-69117 Heidelberg, Germany

[6] Univ Padua, Dipartimento Fis & Astron G Galilei, Via F Marzolo 8, I-35131 Padua, Italy

[7] Ist Nazl Fis Nucl, Sez Padova, Via F Marzolo 8, I-35131 Padua, Italy

[8] Univ Portsmouth, Inst Gravitat & Cosmol, Dennis Sciama Bldg,Burnaby Rd, Portsmouth PO1 3FX, Hants, England

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2016年 / 08期

关键词：

cosmological parameters from CMBR; neutrino masses from cosmology; neutrino properties; particle physics - cosmology connection; BARYON ACOUSTIC-OSCILLATIONS; SEARCHES;

D O I：

10.1088/1475-7516/2016/08/067

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Short BaseLine (SBL) neutrino oscillation anomalies hint at the presence of a sterile neutrino with a mass of around 1 eV. However, such a neutrino is incompatible with cosmological data, in particular observations of the Cosmic Microwave Background (CMB) anisotropies. However, this conclusion can change by invoking new physics. One possibility is to introduce a secret interaction in the sterile neutrino sector mediated by a light pseudoscalar. In this pseudoscalar model, CMB data prefer a sterile neutrino mass that is fully compatible with the mass ranges suggested by SBL anomalies. In addition, this model predicts a value of the Hubble parameter which is completely consistent with local measurements.

引用

页数：19

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