Limit on double beta decay with majoron emission

Fisher, P. H.; Boehm, F.; Bovet, E.; Egger, J.‐P.; Gabathuler, K.; Henrikson, H.; Vuilleumier, J. L.

doi:10.1016/0370-2693(87)90138-9

Cited by 29 publications

(6 citation statements)

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“…~4 It should be pointed out that other searches in V6Ge by Caldwell et al [ 17] and Fisher et al [ 18 ] suggest bounds on gcc which are somewhat smaller than the value used above. None of our above conclusions will be modified by such a small change.…”

mentioning

confidence: 73%

Neutronization neutrino pulses from supernovae and the triplet majoron model

Aharonov

Avignone²,

Nussinov

1988

Physics Letters B

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We address a possible implication of the triplet majoron (TM) model for neutrino pulses from supernovae. If the v~v~-majoron coupling is ~ 0.7 X 10-3, suggested by one of the recent ~13-decay experiments, equilibration of v-species via v~v~--.%v,(v~v~), occurs on a time scale ~ 10 -4 s. Rapid equilibration followed by decay in flight via v(v~) --.9~ +X °, could dramatically enhance the probability of observing neutronization neutrinos, even for g~ ~ ~ 10-is. This effect would make nearby supernovae sensitive tests of TM models.A millisecond "neutronization" pulse of v e is predicted by most stellar collapse calculations [1][2][3]. Unfortunately this pulse is virtually undetectable in the present water Cerenkov counters. Thus the eleven and eight neutrinos from SN 1987A detected by the Kamioka II [ 4 ] and IMB [ 5 ] detectors respectively, are believed to originate from the thermal %, emitted with approximately equal numbers and energies as the other five species v~, 9~, v~, %, v~, over a 1-10 s interval, rather than from the neutronization pulse [6-81.The reason for this is that the % are strongly absorbed on free protons with a cross section a(%p+e+ n) ~E 2 (MeV) X 10 -43 cm 2,whereas electron neutrinos can be detected only via electron recoil in elastic collisions with a hundred time smaller cross section at typical energies (E= E~ =E~ = 10 MeV). This scattering cross section is a(vee -,v~e) ~E~ (MeV) × 10 -44 cm 2.Considering the five-to-one ratio of electrons to protons in water, and the fact that at the source, the v~ from the neutronization pulse carry < 5% of the total energy while they are three to four times less numerous than the %, we expect that between 60 and 80 % should be detected for each detected neutronization re. This picture is considerably modified if the triplet majoron (TM) model [9,10] and in particular, the value ge~ = 0.7 × 10-3 for majoron-ve couplings suggested by the recent PNL-USC experiment [ 11 ], are indeed correct. The simplest minimal version of this model, designed to spontaneously generate Majorana v masses, introduces one new Higgs triplet, (~°X-X --), each carrying two units of lepton number. Assuming that the ~ multiplet couples roughly equally to the various leptonic flavors (i.e. gu, ~ g,~ gec-~0.7×10-3), the interconversion reaction, v~ve-~ (virtual X °) ~v,vi, has a large cross section,This guarantees almost instantaneous (t~< 10 -4 S) equilibration of all neutrino species. Since vu and v~ have approximately six times smaller cross sections for scattering on electrons, this appears to make the neutronization signal even more elusive. However, in the TM model, neutrinos can also change into the much more readily detected %. Direct v~ge vac-122

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mentioning

confidence: 73%

Neutronization neutrino pulses from supernovae and the triplet majoron model

Aharonov

Avignone²,

Nussinov

1988

Physics Letters B

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“…decay induced by majoron emission. Fisher et al 25 have reached a similar negative conclusion. This work was supported in part by the U.S. Department of Energy, and the results could not have been obtained without the invaluable help of D. L. Hale, D. A. Landis, N. W. Madden, and R. H. Pehl.…”

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confidence: 80%

Limits on neutrinolessββdecay, including that with majoron emission

et al. 1987

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“…There was a timing anomaly in Karmen, which was interpreted as a massive new particle 66 , but this was ruled out by Daum et al 67 and shown by J. Reichenbacher to be caused by neutrons 68 . A double beta decay experiment reported evidence for a Majoron 69 , which was contradicted in 70 and the argument continued in 71 . It does not seem to be a topic of current interest.…”

Section: Other Neutrino Mistakesmentioning

confidence: 99%

Neutrino Mistakes: Wrong tracks and Hints, Hopes and Failures

Goodman

2019

Preprint

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In the last two decades, the field of neutrino physics has made enormous progress in measuring the strength and frequency of neutrino and antineutrino oscillations. Along the way, there have been many instances of misunderstanding which led to wrong measurements or speculation for new features of neutrino physics that are not now accepted as correct. This is part of the natural process of science, but given the well-accepted notion that we learn from our mistakes, it is worthwhile to look at some examples and see what the lessons might be. With that goal in mind, I have a list of results which might be termed neutrino mistakes, with the fact in mind that there is no well-accepted definition of a mistake, and no unique threshold for counting something as a mistake when you change your mind after you obtain more information. After making the list, I chose seven of them to discuss. No clear conclusions were drawn from this exercise, but some interesting issues regarding putative wrong results are discussed.

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Limit on double beta decay with majoron emission

Cited by 29 publications

References 5 publications

Neutronization neutrino pulses from supernovae and the triplet majoron model

Neutronization neutrino pulses from supernovae and the triplet majoron model

Limits on neutrinolessββdecay, including that with majoron emission

Neutrino Mistakes: Wrong tracks and Hints, Hopes and Failures

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