Searches for sterile neutrinos at the DANSS experiment

Svirida, Dimirty; Alekseev, I.; Belov, V.; Brudanin, V.; Danilov, M.; Egorov, V.Yu.; Filosofov, D.V.; Fomina, M.; Hons, Z.; Kazartcev, Sergey; Kobyakin, A. S.; Kuznetsov, A.E.; Machikhiliyan, I. V.; Medvedev, D. V.; Nesterov, V.M.; Оlshevsky, А.G.; Pogorelov, N; Ponomarev, Dmitry; Rozova, I.; Rumyantseva, Nadezhda; Rusinov, V.; Samigullin, E.; Shevchik, Yegor; Shirchenko, M.; Shitov, Yuriy; Skrobova, Natalia; Старостин, А.Н.; Tarkovsky, Evgeny; Vlasek, J.; Zhitnikov, I.; Zinatulina, D.

doi:10.22323/1.337.0066

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…Therefore, neither Gd-doped Super-K [71] DANSS collaboration recently announced the observation of an excess around 5 MeV with a low statistical significance. They also pointed out that more effort in the direction of calibration is required in order to robustly claim the excess (see [68] for details). 7 Since this work first appeared on arXiv, Ref.…”

Section: Discussionmentioning

confidence: 99%

Particle physics origin of the 5 MeV bump in the reactor antineutrino spectrum?

Berryman

Brdar

2019

Phys. Rev. D

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One of the most puzzling questions in neutrino physics is the origin of the excess at 5 MeV in the reactor antineutrino spectrum. In this paper, we explore the excess via the reaction 13 C(ν, ν n) 12 C * in organic scintillator detectors. The de-excitation of 12 C * yields a prompt 4.4 MeV photon, while the thermalization of the product neutron causes proton recoils, which in turn yield an additional prompt energy contribution with finite width. Together, these effects can mimic an inverse beta decay event with around 5 MeV energy. We consider several non-standard neutrino interactions to produce such a process and find that the parameter space preferred by Daya Bay is disfavored by measurements of neutrino-induced deuteron disintegration and coherent elastic neutrino-nucleus scattering. While non-minimal particle physics scenarios may be viable, a nuclear physics solution to this anomaly appears more appealing.

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Section: Discussionmentioning

confidence: 99%

Particle physics origin of the 5 MeV bump in the reactor antineutrino spectrum?

Berryman

Brdar

2019

Phys. Rev. D

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“…One of the two experiments, DANSS [20], was discussed in details in the dedicated talk by D. Svirida [21]. DANSS is located below the reactor core of the Kalinin nuclear power plant, in Russia, and uses a movable detector of plastic scintillator in order to detect electron antineutrinos using the Inverse Beta-Decay (IBD) reaction.…”

Section: Pos(now2018)079mentioning

confidence: 99%