期刊
EUROPEAN PHYSICAL JOURNAL C
卷 80, 期 8, 页码 -出版社
SPRINGER
DOI: 10.1140/epjc/s10052-020-8197-y
关键词
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资金
- Science and Technology Facilities Council, part of UK Research and Innovation
- Royal Society
- European Research Council
- European Union [752309]
- STFC [ST/P000800/1] Funding Source: UKRI
- Marie Curie Actions (MSCA) [752309] Funding Source: Marie Curie Actions (MSCA)
We present a quantitative, direct comparison of constraints on sterile neutrinos derived from neutrino oscillation experiments and from Planck data, interpreted assuming standard cosmological evolution. We extend a 1+1 model, which is used to compare exclusion contours at the 95% Cl derived from Planck data to those from nu e-disappearance measurements, to a 3+1 model. This allows us to compare the Planck constraints with those obtained through nu mu -> nu e appearance searches, which are sensitive to more than one active-sterile mixing angle. We find that the cosmological data fully exclude the allowed regions published by the LSND, MiniBooNE and Neutrino-4 collaborations, and those from the gallium and rector anomalies, at the 95% Cl. Compared to the exclusion region from the Daya Bay nu e-disappearance search, the Planck data are more strongly excluding above |Delta m412|approximate to 0.1eV2 and meffsterileapproximate to 0.2eV, with the Daya Bay exclusion being stronger below these values. Compared to the combined Daya Bay/Bugey/MINOS exclusion region on nu mu -> nu e appearance, the Planck data is more strongly excluding above Delta m412 approximate to 5x10-2eV2, with the exclusion strengths of the Planck data and the Daya Bay/Bugey/MINOS combination becoming comparable below this value.
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