Assessing the role of nuclear effects in the interpretation of the MiniBooNE low-energy anomaly

Ericson, M.; Garzelli, Maria Vittoria; Giunti, C.; Martini, M.

doi:10.1103/physrevd.93.073008

Cited by 25 publications

(25 citation statements)

References 196 publications

(257 reference statements)

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“…There are few remarks about this conclusion. First of all, this analysis has been performed by considering the multinucleon contributions as calculated Another example of neutrino oscillation analysis which quantitatively takes into account the effects of the multinucleon emission channel is the one performed by Ericson et al [381] in the context of the MiniBooNE ν µ → ν e low energy anomaly [54,55], related to the possible existence of sterile neutrinos. Ericson et al shown that taking into account the multinucleon effects in the analysis of MiniBooNE data allows a slightly better fit of the MiniBooNE low-energy excess and induces a shift of the allowed region in the sin 2 2ϑ -∆m 2 plane towards smaller values of sin 2 2ϑ and larger values of ∆m 2 in the framework of twoneutrino oscillations.…”

Section: Neutrino Energy Recostruction and Neutrino Oscillation Analysismentioning

confidence: 99%

“…In Ref. [381] Ericson et al also performed a global fit of short-baseline neutrino oscillation data in the framework of 3+1 neutrino mixing showing that taking into account the multinucleon interactions in the analysis of MiniBooNE data lead to a decrease of the appearance-disappearance tension. However, this effect is not enough to solve the problem of the appearance-disappearance tension in the global fit of short-baseline neutrino oscillation data, because the value of the appearance-disappearance parameter goodness-of-fit is still too small.…”

Section: Neutrino Energy Recostruction and Neutrino Oscillation Analysismentioning

confidence: 99%

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Neutrino–nucleus cross sections for oscillation experiments

Katori¹,

Martini²

2017

J. Phys. G: Nucl. Part. Phys.

155

197

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Abstract. Neutrino oscillations physics is entered in the precision era. In this context accelerator-based neutrino experiments need a reduction of systematic errors to the level of a few percent. Today one of the most important sources of systematic errors are neutrinonucleus cross sections which in the hundreds-MeV to few-GeV energy region are known with a precision not exceeding 20%. In this article we review the present experimental and theoretical knowledge of the neutrino-nucleus interaction physics. After introducing neutrino oscillation physics and accelerator-based neutrino experiments, we overview general aspects of the neutrino-nucleus cross sections, both theoretical and experimental views. Then, we focus on these quantities in different reaction channels. We start with the quasielastic and quasielastic-like cross section, putting a special emphasis on multinucleon emission channel which attracted a lot of attention in the last few years. We review the main aspects of the different microscopic models for this channel by discussing analogies and differences among them. The discussion is always driven by a comparison with the experimental data. We then consider the one pion production channel where data-theory agreement remains very unsatisfactory. We describe how to interpret pion data, then we analyze in particular the puzzle related to the impossibility of theoretical models and Monte Carlo to simultaneously describe MiniBooNE and MINERvA experimental results. Inclusive cross sections are also discussed, as well as the comparison between the ν µ and ν e cross sections, relevant for the CP violation experiments. The impact of the nuclear effects on the reconstruction of neutrino energy and on the determination of the neutrino oscillation parameters is reviewed. A window to the future is finally opened by discussing projects and efforts in future detectors, beams, and analysis.

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Section: Neutrino Energy Recostruction and Neutrino Oscillation Analysismentioning

confidence: 99%

Section: Neutrino Energy Recostruction and Neutrino Oscillation Analysismentioning

confidence: 99%

Neutrino–nucleus cross sections for oscillation experiments

Katori¹,

Martini²

2017

J. Phys. G: Nucl. Part. Phys.

155

197

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“…Part of the MiniBooNE low-energy anomaly may be explained by taking into account nuclear effects in the energy reconstruction[151,152], but this effect is not sufficient to solve the problem[153].…”

mentioning

confidence: 99%

Updated global 3+1 analysis of short-baseline neutrino oscillations

Gariazzo

Giunti

Laveder

et al. 2017

J. High Energ. Phys.

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263

335

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We present the results of an updated fit of short-baseline neutrino oscillation data in the framework of 3+1 active-sterile neutrino mixing. We first consider ν e andν e disappearance in the light of the Gallium and reactor anomalies. We discuss the implications of the recent measurement of the reactorν e spectrum in the NEOS experiment, which shifts the allowed regions of the parameter space towards smaller values of |U e4 | 2 . The β-decay constraints of the Mainz and Troitsk experiments allow us to limit the oscillation length between about 2 cm and 7 m at 3σ for neutrinos with an energy of 1 MeV. The corresponding oscillations can be discovered in a model-independent way in ongoing reactor and source experiments by measuring ν e andν e disappearance as a function of distance. We then consider the global fit of the data on short-baselinetransitions in the light of the LSND anomaly, taking into account the constraints from ν µ disappearance experiments, including the recent data of the MINOS and IceCube experiments. The combination of the NEOS constraints on |U e4 | 2 and the MINOS and IceCube constraints on |U µ4 | 2 lead to an unacceptable appearance-disappearance tension which becomes tolerable only in a pragmatic fit which neglects the MiniBooNE low-energy anomaly. The minimization of the global χ 2 in the space of the four mixing parameters Open Access, c The Authors. Article funded by SCOAP 3 .https://doi.org/10.1007/JHEP06 (2017)135 JHEP06 (2017)135 ∆m 2 41 , |U e4 | 2 , |U µ4 | 2 , and |U τ 4 | 2 leads to three allowed regions with narrow ∆m 2 41 widths at ∆m 2 41 ≈ 1.7 (best-fit), 1.3 (at 2σ), 2.4 (at 3σ) eV 2 . The effective amplitude of short-baselineν e oscillations is limited by 0.00048 sin 2 2ϑ eµ 0.0020 at 3σ. The restrictions of the allowed regions of the mixing parameters with respect to our previous global fits are mainly due to the NEOS constraints. We present a comparison of the allowed regions of the mixing parameters with the sensitivities of ongoing experiments, which show that it is likely that these experiments will determine in a definitive way if the reactor, Gallium and LSND anomalies are due to active-sterile neutrino oscillations or not.

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“…We considered the space of the two parameters ∆m 2 41 m 2 4 and sin 2 2ϑ ee = 4|U e4 | 2 (1− |U e4 | 2 ) in order to compare the sensitivity of 163 Ho experiments with the results of global analyses of short-baseline neutrino oscillation data [18,22,55,[120][121][122][123][124][125][126][127][128][129]. We calculated the sensitivity of 163 Ho experiments in the sin 2 2ϑ ee -∆m 2 41 plane with a method similar to that described in section 4, using the spectrum in eq.…”

Section: +1 Neutrino Mixingmentioning

confidence: 99%

Light sterile neutrino sensitivity of 163Ho experiments

Gastaldo

Giunti

Zavanin

2016

J. High Energ. Phys.

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Abstract:We explore the sensitivity of 163 Ho electron capture experiments to neutrino masses in the standard framework of three-neutrino mixing and in the framework of 3+1 neutrino mixing with a sterile neutrino which mixes with the three standard active neutrinos, as indicated by the anomalies found in short-baseline neutrino oscillations experiments. We calculate the sensitivity to neutrino masses and mixing for different values of the energy resolution of the detectors, of the unresolved pileup fraction and of the total statistics of events, considering the expected values of these parameters in the two planned stages of the ECHo project (ECHo-1k and ECHo-1M). We show that an extension of the ECHo-1M experiment with the possibility to collect 10 16 events will be competitive with the KATRIN experiment. This statistics will allow to explore part of the 3+1 mixing parameter space indicated by the global analysis of short-baseline neutrino oscillation experiments. In order to cover all the allowed region, a statistics of about 10 17 events will be needed.

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Assessing the role of nuclear effects in the interpretation of the MiniBooNE low-energy anomaly

Cited by 25 publications

References 196 publications

Neutrino–nucleus cross sections for oscillation experiments

Neutrino–nucleus cross sections for oscillation experiments

Updated global 3+1 analysis of short-baseline neutrino oscillations

Light sterile neutrino sensitivity of 163Ho experiments

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