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Constraining Majorana neutrino electromagnetic properties from the LMA-MSW solution of the solar neutrino problem
High Energy Physics - Phenomenology · Submitted 13 Aug 2002
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim Performing a simultaneous fit of LMA-MSW oscillation parameters and TMs we find that 6.3 times 10^{-10} mu_B and 2.0 times 10^{-10} mu_B are the 90% C.L. bounds from solar and combined solar + reactor data, respectively.
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The abstract, sentence by sentence
In this paper we use solar neutrino data to derive stringent bounds on Majorana neutrino transition moments (TMs). Should such be present, they would contribute to the neutrino--electron scattering cross section and hence alter the signal observed in Super-Kamiokande. Motivated by the growing robustness of the LMA-MSW solution of the solar neutrino problem indicated by recent data, and also by the prospects of its possible confirmation at KamLAND, we assume the validity of this solution, and we constrain neutrino TMs by using the latest global solar neutrino data. We find that all elements of the TM matrix can be bounded at the same time. Furthermore, we show how reactor data play a complementary role to the solar neutrino data, and use the combination of both data sets to improve the current bounds. Performing a simultaneous fit of LMA-MSW oscillation parameters and TMs we find that 6.3 times 10^{-10} mu_B and 2.0 times 10^{-10} mu_B are the 90% C.L. bounds from solar and combined solar + reactor data, respectively. Finally, we perform a simulation of the upcoming Borexino experiment and show that it will improve the bounds from today's data by roughly one order of magnitude.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | In this paper we use solar neutrino data to derive stringent bounds on Majorana neutrino transition moments (TMs). | contribution 0.99 | 0.95 | 0.10 | asserted 0.99 |
| s1 | Should such be present, they would contribute to the neutrino--electron scattering cross section and hence alter the signal observed in Super-Kamiokande. | background 0.88 | 0.07 | 0.03 | hedged possibility 0.84 |
| s2 | Motivated by the growing robustness of the LMA-MSW solution of the solar neutrino problem indicated by recent data, and also by the prospects of its possible confirmation at KamLAND, we assume the validity of this solution, and we constrain neutrino TMs by using the latest global solar neutrino data. | method 0.85 | 0.60 | 0.04 | hedged possibility 0.65 |
| s3 | We find that all elements of the TM matrix can be bounded at the same time. | result 0.99 | 0.95 | 0.15 | asserted 1.00 |
| s4 | Furthermore, we show how reactor data play a complementary role to the solar neutrino data, and use the combination of both data sets to improve the current bounds. | contribution 0.53 | 0.90 | 0.06 | asserted 1.00 |
| s5 | Performing a simultaneous fit of LMA-MSW oscillation parameters and TMs we find that 6.3 times 10^{-10} mu_B and 2.0 times 10^{-10} mu_B are the 90% C.L. bounds from solar and combined solar + reactor data, respectively. | result 1.00 | 0.97 | 0.73 | asserted 1.00 |
| s6 | Finally, we perform a simulation of the upcoming Borexino experiment and show that it will improve the bounds from today's data by roughly one order of magnitude. | result 0.76 | 0.93 | 0.11 | asserted 0.95 |
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The paper
Original abstract
In this paper we use solar neutrino data to derive stringent bounds on Majorana neutrino transition moments (TMs). Should such be present, they would contribute to the neutrino--electron scattering cross section and hence alter the signal observed in Super-Kamiokande. Motivated by the growing robustness of the LMA-MSW solution of the solar neutrino problem indicated by recent data, and also by the prospects of its possible confirmation at KamLAND, we assume the validity of this solution, and we constrain neutrino TMs by using the latest global solar neutrino data. We find that all elements of the TM matrix can be bounded at the same time. Furthermore, we show how reactor data play a complementary role to the solar neutrino data, and use the combination of both data sets to improve the current bounds. Performing a simultaneous fit of LMA-MSW oscillation parameters and TMs we find that 6.3 times 10^{-10} mu_B and 2.0 times 10^{-10} mu_B are the 90% C.L. bounds from solar and combined solar + reactor data, respectively. Finally, we perform a simulation of the upcoming Borexino experiment and show that it will improve the bounds from today's data by roughly one order of magnitude.
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References
How the literature uses it
21 arXiv papers cite this in 40 sentences
Papers citing it · 29 sentences without a confident label
Builds on it 2 papers
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Beyond the analysis of experiments, in this work we update the discussion given in Refs. [ref] concerning the sensitivity of $ν-e$ scattering to the effective neutrino magnetic moment using the solar neutrino data from the Borexino collaboration [ref] .
Probing neutrino transition magnetic moments with coherent elastic neutrino-nucleus scattering · Introduction · 0.92
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Therefore, we can generalize the three-neutrino expression in Ref. [ref] to our case of interest, where we take just four neutrino species (m=1),
Low-energy probes of sterile neutrino transition magnetic moments · Neutrino magnetic moment and massive “sterile” leptons · 0.99
Uses its method or tool 1 paper
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Following the formalism in [ref] , one can express the effective neutrino magnetic moment as [equation] where $ν_L$ and $ν_R$ denote the vectors of the amplitudes of the incoming neutrinos with left- and right-handed chiralities, respectively, and $$ is the matrix of neutrino magnetic moments.
Solar $\bar{\nu}_e$ flux: Revisiting bounds on neutrino magnetic moments and solar magnetic field · Limits from electromagnetic contributions to scattering processes · 0.98
Cites it as support 1 paper
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Note that this expression does not depend on any of the phases of the TMM matrix, as has already been noticed before [ref] [This expression is also equivalent to the equations presented in Refs. [ref] .].
Neutrino magnetic moments: effective versus fundamental parameters · Bounds from solar neutrinos · 0.96
Cites it as background 5 papers
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In recent years, there have been many efforts connecting these constraints to the parameters of the Lagrangian (see, for example, [ref] ).
Majorana versus Dirac Constraints on the Neutrino Dipole Moments · Introduction · 0.91
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This issue has been previously discussed in the literature (see, e.g., Refs. [ref] and the recent Ref. [ref] ), yet some confusion persists in the field.
Neutrino magnetic moments: effective versus fundamental parameters · Introduction · 0.82
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After the discovery of neutrino oscillations [ref] over a decade ago, it became evident that neutrinos are indeed massive particles [ref] and, as a result, they may acquire nontrivial electromagnetic properties as well [ref] .
Probing neutrino magnetic moments at Spallation Neutron Source facilities · Electromagnetic neutrino-nucleus cross sections · 0.93
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