Search of neutrino magnetic moments with a high-purity germanium detector at the Kuo-Sheng nuclear power station

Wong, H. T.; Li, H. B.; Lin, Shou-De; Lee, F. S.; Singh, V.; Wu, Shengji; Chang, C. Y.; Chang, Hung-Chi; Chen, C. P.; Chou, Marty; Deniz, M.; Fang, J.; Hu, C. H.; Huang, Hanxiong; Jon, G. C.; Kuo, W. S.; Lai, W. P.; Lee, S. C.; Li, J.; Liao, H.; Lin, F. K.; Lin, Shin-Ted; Lu, Jingbin; Sheng, H. Y.; Su, R. F.; Tong, W. S.; Xin, B.; Yeh, T.R.; Yue, Qian; Zhou, Z. Y.; Zhuang, B. A.

doi:10.1103/physrevd.75.012001

Cited by 171 publications

(110 citation statements)

References 52 publications

(48 reference statements)

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“…. 7) × 10 −11 µ B [3,4]. Similar limits were obtained for solar neutrinos [5,6], but due to oscillations at long distance (as well as matter-enhanced oscillations in the Sun) their flavor composition changes and therefore the solar NMM results could differ from the reactor ones.…”

supporting

confidence: 61%

Experiment GEMMA: Search for the Neutrino Magnetic Moment

Егоров¹

2011

Proceedings of 35th International Conference of High Energy Physics — PoS(ICHEP 2010)

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The result of the 3-year neutrino magnetic moment measurement at the Kalinin Nuclear Power Plant (KNPP) with the GEMMA spectrometer is presented. Antineutrino-electron scattering is investigated. A high-purity germanium detector of 1.5 kg placed at a distance of 13.9 m from the centre of the 3 GW th reactor core is used in the spectrometer. The antineutrino flux is 2.7×10 13ν e /cm 2 /s. The differential method is used to extract ν-e electromagnetic scattering events. The scattered electron spectra taken in 5184+6798 and 1853+1021 hours for the reactor ON and OFF periods are compared. The upper limit for the neutrino magnetic moment µ ν was found to be 3.2×10 −11 µ B at 90% CL.

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supporting

confidence: 61%

Experiment GEMMA: Search for the Neutrino Magnetic Moment

Егоров¹

2011

Proceedings of 35th International Conference of High Energy Physics — PoS(ICHEP 2010)

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“…Neutrino scattering and APV are insensitive to the longitudinal mode of X, and at very small m X the constraints are m X -independent. The most powerful limits from ν e − e scattering are from a combination of the TEXONO [37][38][39][40], LSND [41], BOREXINO [42], GEMMA [43], and CHARM II [44] experiments. Ref.…”

Section: Fermionic Processesmentioning

confidence: 99%

Light vectors coupled to bosonic currents

2019

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New spin-1 particles with masses below the weak scale are present in many theories of beyond Standard Model (SM) physics. In this work, we extend previous analyses by systematically considering the couplings of such a vector to the bosonic sector of the SM, focusing on models that lead to mass-mixing with the Z boson. These couplings generically lead to enhanced emission of the vector's longitudinal mode, both in Higgs decays and in flavor changing meson decays. We present bounds in the SM+X effective theory and investigate their model-dependence. For the case of Higgs decays, we point out that tree-level vector emission is, depending on the model, not always enhanced, affecting the constraints. For meson decays, which are the dominant constraints at small vector masses, we find that while B decay constraints can be weakened by fine-tuning UV parameters, it is generically difficult to suppress the stringent constraints from kaon decays.

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“…In this case, the differential cross section, including the corrections coming from the Lagrangian shown in equation (1), will be given by This is illustrated in figure 4, where we show the differential cross section for anti-neutrino electron scattering, e e e e n n  --¯, averaged over a typical anti-neutrino reactor spectrum [111,112]. The plot is given in terms of the electron recoil energy, T e , for an energy window relevant for an anti-neutrino detector such as TEXONO [113,114]. In the plot, the prediction for the SM cross section is shown, as well as that for the NSI one.…”

Section: Nsi Phenomenology In Detectionmentioning

confidence: 99%

Non standard neutrino interactions: current status and future prospects

2015

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Neutrino oscillations have become well-known phenomena; the measurements of neutrino mixing angles and mass squared differences are continuously improving. Future oscillation experiments will eventually determine the remaining unknown neutrino parameters, namely, the mass ordering, normal or inverted, and the CP-violating phase. On the other hand, the absolute mass scale of neutrinos could be probed by cosmological observations, single beta decay as well as by neutrinoless double beta decay experiments. Furthermore, the last one may shed light on the nature of neutrinos, Dirac or Majorana, by measuring the effective Majorana mass of neutrinos. However, the neutrino mass generation mechanism remains unknown. A well-motivated phenomenological approach to search for new physics, in the neutrino sector, is that of non-standard interactions. In this short review, the current constraints in this picture, as well as the perspectives from future experiments, are discussed.

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Search of neutrino magnetic moments with a high-purity germanium detector at the Kuo-Sheng nuclear power station

Cited by 171 publications

References 52 publications

Experiment GEMMA: Search for the Neutrino Magnetic Moment

Experiment GEMMA: Search for the Neutrino Magnetic Moment

Light vectors coupled to bosonic currents

Non standard neutrino interactions: current status and future prospects

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