2001
DOI: 10.1103/physrevlett.86.1978
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Limits on the Existence of Heavy Neutrinos in the Range 50–1000 eV from the Study of the187ReBeta Decay

Abstract: We analyzed the spectrum of the 187Re beta decay, obtained with a cryogenic microcalorimeter, searching for heavy neutrinos in the mass range 50-1000 eV. No evidence has been found for them and the upper limits on the mixing angle with a zero-mass neutrino are reported. Upper limits of 9x10(-3) at 1000 eV/c(2), 1.2x10(-2) at 500 eV/c(2), 4.4x10(-2) at 200 eV/c(2), and 0.116 at 100 eV/c(2) at 95% C.L. have been obtained. These upper limits are a factor of 2 to 4 lower than the current limits reported in the lit… Show more

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Cited by 32 publications
(22 citation statements)
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“…+ e − scattering data [27,28]. We confront these results with the bounds on the heavy neutrino mass given by the data of β-decay experiments [16,29] and neutrinoless double-β decay experiments [17,18]. Finally, in Section VI we draw our conclusions.…”
Section: Introductionmentioning
confidence: 88%
“…+ e − scattering data [27,28]. We confront these results with the bounds on the heavy neutrino mass given by the data of β-decay experiments [16,29] and neutrinoless double-β decay experiments [17,18]. Finally, in Section VI we draw our conclusions.…”
Section: Introductionmentioning
confidence: 88%
“…The results reported in [108] were the most precise measurements of the transition energy E 0 Figure 19: Heavy sterile mass exclusion plot of MANU [109] (left). BEFS in the MANU spectrum [110] (right).…”
Section: Manumentioning
confidence: 95%
“…• Searches for heavy neutrinos via the kinematics of β decay have been performed with 187 Re [48] [55]. The results of these searches are shown in Fig.…”
Section: Direct Experimental Constraintsmentioning
confidence: 99%