Inverse-square law violation and reactor antineutrino anomaly

Naumov, D.; Naumov, Vadim A.; Shkirmanov, Dmitry S.

doi:10.1134/s1063779616060174

Cited by 5 publications

(8 citation statements)

References 35 publications

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“…that approximately corresponds to 0.7-1.2 eV for the spectrum and reactor/detector averaged effective parameter σ eff , reciprocal of which, 1/σ eff ∼ (0.2-0.3) µ, characterizes, in order of magnitude, the spatial-temporal overlap between the wave packets of the particles and nuclei involved into the antineutrino production and detection processes. These results are roughly consistent, within uncertainties, with our earlier estimates [62], which did not include the data from the new reactor experiments, the most influential of which is DANSS.…”

Section: Discussionsupporting

confidence: 90%

“…In this article, which is a continuation of our previous studies [61][62][63], we discuss an explanation of the RAA alternative (fully or partially) to the sterile neutrino hypothesis and complementary to the more prosaic one, associated with the difficulties in the ν e flux modeling. Our hypothesis is based on the possibility of violation of the classical (geometric) inverse-square law (ISL) at short but macroscopic distances between the (anti)neutrino source and the detector.…”

Section: Introductionmentioning

confidence: 83%

“…It may be even more interesting that the steady decrease of the event rate at very short baselines, mentioned in our previous works [62,63], if real, cannot be described by a flux renormalization alone, as well as by the eV-scale sterile neutrinos with the parameters following from the "global ν e disappearance" fits. Thus, it seems pertinent to consider an alternative or complementary explanation, namely the ISLV hypothesis.…”

Section: Extra Neutrinos or Miscalculated Flux?mentioning

confidence: 90%

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Reactor Antineutrino Anomaly Reanalysis in Context of Inverse-Square Law Violation

Naumov

Shkirmanov

2021

Universe

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We discuss a possibility that the so-called reactor antineutrino anomaly (RAA), which is a deficit of the ν¯e rates in the reactor experiments in comparison to the theoretical expectations, can at least in part be explained by applying a quantum field-theoretical approach to neutrino oscillations, which in particular predicts a small deviation from the classical inverse-square law at short (but still macroscopic) distances between the neutrino source and detector. An extensive statistical analysis of the current reactor data on the integrated ν¯e event rates vs. baseline is performed to examine this speculation. The obtained results are applied to study another long-standing puzzle—gallium neutrino anomaly (GNA), which is a missing νe flux from 37Ar and 51Cr electron-capture decays as measured by the gallium–germanium solar neutrino detectors GALLEX and SAGE.

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Section: Discussionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 83%

Section: Extra Neutrinos or Miscalculated Flux?mentioning

confidence: 90%

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Reactor Antineutrino Anomaly Reanalysis in Context of Inverse-Square Law Violation

Naumov

Shkirmanov

2021

Universe

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“…,(36) disappear again, and similar to (10), we obtainΣ ren sj (R) = v s v j f + sj (ℓ s n; ℓ j κ) 2 dΩ(n) = σ ren sj , and σ ren j…”

supporting

confidence: 66%

“…When the experimental resolution will permit to distinguish between these different renormalized differential scattering fluxes (37) at different R, the perturbative mode j = 1 with different s 1 modes (arised in Eqs. (26, (27), (29), (36)) will be the most interesting for observation due to the amplification factor (35). Now for the total cross-sections all the inverse-power terms in (29)…”

mentioning

confidence: 99%

Corrections to scattering processes due to minimal measurable length

et al. 2019

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In this paper, we will analyze the short distance corrections to low energy scattering. They are produced because of an intrinsic extended structure of the background geometry of spacetime. It will be observed that the deformation produced by a minimal measurable length can have low energy consequences, if this extended structure occurs at a scale much larger than the Planck scale. We explicitly calculate short distance corrections to the Green function of the deformed Lippmann-Schwinger equation, and to the conserved currents for these processes. We then use them to analyze the pre-asymptotic corrections to the differential scattering flux at finite macroscopically small distances.We do not have a complete theory of quantum gravity, however, there are various approaches to quantum gravity. It is expected from various different approaches to quantum gravity that the geometry of spacetime could be deformed by the existence of a minimal measurable length scale [5]. In fact, it is known that in string theory, the background geometry of spacetime gets deformed by the existence of a such minimal measurable length [1,2]. The reason is that the smallest probe available in string theory is the fundamental string, and so the spacetime cannot be probed below the string length scale [3,4]. In fact, it has been demonstrated that in perturbative string theory, the minimal measurable length l min is related to the string length as l min = g 1/4 s l s (where l s = α ′ is the string length, and g s is the string coupling constant). Even though non-perturbative effects can produce point like objects (such a D0-branes), it can be argued that a minimal length of the order of l min = l s g 1/3 s is produced by these non-perturbative effects [5,6]. Such a minimal measurable length exists in string theory because the total energy of the quantized string depends on the winding number w and the excitation number n. Now under T-duality, as ρ → l 2 s /ρ, we have n → w. Thus, it is possible to argue using the T-duality that a description of string theory below and above l s are the same, and so string theory contains a minimal measurable length scale [5]. It should be noted that an effective path integral of the center of mass of the string (for strings propagating in compactified extra dimensions) has been constructed, and T-duality has been used to demonstrate that such a system has a minimal length associated with it [7,8]. As the construction of double field theory has been motivated from T-duality [9, 10], it is expected that such a minimal length will also exist in the double field theory [11].It may be noted that even if the string theory does not turn to be the true theory of quantum gravity, the argument for the existence of a minimal measurable length in spacetime could still hold. As it can be argued, a minimal measurable length scale, at least of the order of Planck length, would exist in all approaches to quantum gravity. This is because any theory of quantum gravity has to produce consistent black hole physics, and the black ...

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