Neutrino Physics with Dark Matter Detectors

Dutta, Bhaskar; Strigari, Louis E.

doi:10.1146/annurev-nucl-101918-023450

Cited by 43 publications

(33 citation statements)

References 166 publications

(155 reference statements)

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“…The expected rate of ν-e − scatterings is derived assuming a 8 B-ν flux of φ = (5.46±0.66)×10 6 cm −2 s −1 [21]. The calculation of scattering cross sections follows [22]. The [25].…”

Section: Homogeneously Distributed Intrinsic Backgroundmentioning

confidence: 99%

Sensitivity of the DARWIN observatory to the neutrinoless double beta decay of $$^{136}$$Xe

et al. 2020

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The DARWIN observatory is a proposed nextgeneration experiment to search for particle dark matter and for the neutrinoless double beta decay of 136 Xe. Out of its 50 t total natural xenon inventory, 40 t will be the active target of a time projection chamber which thus contains about 3.6 t of 136 Xe. Here, we show that its projected half-life sensitivity is 2.4 × 10 27 years, using a fiducial volume of 5 t of natural xenon and 10 years of operation with a background rate of less than 0.2 events/(t • year) in the energy region of interest. This sensitivity is based on a detailed Monte Carlo simulation study of the background and event topologies in the large, homogeneous target. DARWIN will be comparable in its science reach to dedicated double beta decay experiments using xenon enriched in 136 Xe.

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Section: Homogeneously Distributed Intrinsic Backgroundmentioning

confidence: 99%

Sensitivity of the DARWIN observatory to the neutrinoless double beta decay of $$^{136}$$Xe

et al. 2020

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“…The general form of the neutrino-electron scattering cross section induced by these low-energy neutral and charged current interactions can then be expressed as [87][88][89][90][91][92],…”

Section: Jhep12(2020)155mentioning

confidence: 99%

Solar neutrino probes of the muon anomalous magnetic moment in the gauged $$ \mathrm{U}{(1)}_{L_{\mu }-{L}_{\tau }} $$

Amaral

Cerdeño

Foldenauer

et al. 2020

J. High Energ. Phys.

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Models of gauged $$ \mathrm{U}{(1)}_{L_{\mu }-{L}_{\tau }} $$ U 1 L μ − L τ can provide a solution to the long-standing discrepancy between the theoretical prediction for the muon anomalous magnetic moment and its measured value. The extra contribution is due to a new light vector mediator, which also helps to alleviate an existing tension in the determination of the Hubble parameter. In this article, we explore ways to probe this solution via the scattering of solar neutrinos with electrons and nuclei in a range of experiments and considering high and low solar metallicity scenarios. In particular, we reevaluate Borexino constraints on neutrino-electron scattering, finding them to be more stringent than previously reported, and already excluding a part of the (g − 2)μ explanation with mediator masses smaller than 2 × 10−2 GeV. We then show that future direct dark matter detectors will be able to probe most of the remaining solution. Due to its large exposure, LUX-ZEPLIN will explore regions with mediator masses up to 5 × 10−2 GeV and DARWIN will be able to extend the search beyond 10−1 GeV, thereby covering most of the area compatible with (g − 2)μ. For completeness, we have also computed the constraints derived from the recent XENON1T electron recoil search and from the CENNS-10 LAr detector, showing that none of them excludes new areas of the parameter space. Should the excess in the muon anomalous magnetic moment be confirmed, our work suggests that direct detection experiments could provide crucial information with which to test the $$ \mathrm{U}{(1)}_{L_{\mu }-{L}_{\tau }} $$ U 1 L μ − L τ solution, complementary to efforts in neutrino experiments and accelerators.

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“…The direct detection cross section can be cast as i.e., close to 0.1 pb. Cross sections of this order are above the expected neutrino background and are within reach of future planned experimental sensitivity [39]. We will return to direct detection prospects in Sec.…”

Section: Direct Dark Matter Detectionmentioning

confidence: 88%

Cosmological implications of the KOTO excess

2020

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The KOTO experiment has reported an excess of K L → π 0 νν events above the Standard Model prediction, in tension with the Grossman-Nir (GN) bound. The GN bound heavily constrains new physics interpretations of an excess in this channel, but another possibility is that the observed events originate from a different process entirely: a decay of the form K L → π 0 X, where X denotes one or more new invisible species. We introduce a class of models to study this scenario with two light scalars playing the role of X, and we examine the possibility that the lighter of the two new states may also account for cosmological dark matter (DM). We show that this species can be produced thermally in the presence of additional interactions apart from those needed to account for the KOTO excess. Conversely, in the minimal version of the model, DM must be produced nonthermally. In this case, avoiding overproduction imposes constraints on the structure of the low-energy theory. Moreover, this requirement carries significant implications for the scale of reheating in the early Universe, generically preferring a low but observationally permitted reheating temperature of Oð10 MeVÞ. We discuss astrophysical and terrestrial signatures that will allow further tests of this paradigm in the coming years.

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Neutrino Physics with Dark Matter Detectors

Cited by 43 publications

References 166 publications

Sensitivity of the DARWIN observatory to the neutrinoless double beta decay of $$^{136}$$Xe

Sensitivity of the DARWIN observatory to the neutrinoless double beta decay of $$^{136}$$Xe

Solar neutrino probes of the muon anomalous magnetic moment in the gauged $$ \mathrm{U}{(1)}_{L_{\mu }-{L}_{\tau }} $$

Cosmological implications of the KOTO excess

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