Measurement of scintillation response of CsI[Na] to low-energy nuclear recoils by COHERENT

We present the constraints on the parameters of several light boson mediator models obtained from the analysis of the current data of the COHERENT CEνNS experiment. We consider a variety of vector boson mediator models: the so-called universal, the B − L and other anomaly-free U(1)′ gauge models with direct couplings of the new vector boson with neutrinos and quarks, and the anomaly-free Le− Lμ, Le− Lτ, and Lμ− Lτ gauge models where the coupling of the new vector boson with the quarks is generated by kinetic mixing with the photon at the one-loop level. We consider also a model with a new light scalar boson mediator that is assumed, for simplicity, to have universal coupling with quarks and leptons. Since the COHERENT CEνNS data are well-fitted with the cross section predicted by the Standard Model, the analysis of the data yields constraints for the mass and coupling of the new boson mediator that depend on the charges of quarks and neutrinos in each model under consideration. We compare these constraints with the limits obtained in other experiments and with the values that can explain the muon g − 2 anomaly in the models where the muon couples to the new boson mediator.

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“…where f Q is the quenching factor, which is given in refs. [23,83] for the CsI detector and in ref. [22] for the Ar detector.…”

Section: Coherent Data Analysismentioning

confidence: 99%

“…the analyses of the COHERENT CsI and Ar data using the timing information provided by the COHERENT Collaboration [22,23,83] and distributing the theoretical CEνNS event numbers N CEνNS i in eq. (2.4) in time bins that are calculated from the exponential decay laws of the generating pions and muons.…”

Section: Jhep05(2022)109mentioning

confidence: 99%

Probing light mediators and (g − 2)μ through detection of coherent elastic neutrino nucleus scattering at COHERENT

Corona

Cadeddu

Cargioli

et al. 2022

J. High Energ. Phys.

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“…The CsI detector was decommissioned and removed from Neutrino Alley in July 2019. Analysis from the full CsI data sample, with additional data amounting to more than twice the statistics and improved QF evaluation (104), is now complete (105). Data selection cuts and efficiencies are improved with respect to the initial analysis.…”

Section: First Cevns Measurement On Cesium Iodidementioning

confidence: 99%

COHERENT at the Spallation Neutron Source

Barbeau

Efremenko

Scholberg

2023

Annu. Rev. Nucl. Part. Sci.

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The Spallation Neutron Source (SNS) at Oak Ridge National Laboratory provides an intense, high-quality source of neutrinos from pion decay at rest. This source was recently used for the first measurements of coherent elastic neutrino–nucleus scattering (CEvNS) by the COHERENT Collaboration, which resulted in new constraints of physics beyond the Standard Model. The SNS neutrino source will enable further CEvNS measurements, exploration of inelastic neutrino–nucleus interactions of particular relevance for understanding supernova neutrinos, and searches for accelerator-produced sub-GeV dark matter. Taking advantage of this unique facility, COHERENT's suite of detectors in Neutrino Alley at the SNS is accumulating more data to address a broad physics program at the intersection of particle physics, nuclear physics, and astrophysics. This review describes COHERENT's first two CEvNS measurements, their interpretation, and the potential of a future physics program at the SNS. Expected final online publication date for the Annual Review of Nuclear and Particle Science, Volume 73 is September 2023. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

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“…High-quality, repeatable and verifiable measurements are a priority to improve the confidence in the interpretation of the CEvNS searches. The COHERENT collaboration addresses this with a dedicated neutron scattering facility with a pulsed, collimated, quasi-monoenergetic, tunable beam at the tandem Van de Graaff accelerator at TUNL (1,101,102).…”

Section: Reducing Signal Uncertaintiesmentioning

confidence: 99%

COHERENT at the Spallation Neutron Source

Barbeau¹,

Efremenko²,

Scholberg³

2021

Preprint

Self Cite

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The Spallation Neutron Source (SNS) at Oak Ridge National Laboratory provides an intense, high-quality source of neutrinos from pion decay at rest. This source was recently used for the first measurements of coherent elastic neutrino-nucleus scattering (CEvNS) by the COHERENT collaboration, resulting in new constraints of beyond-thestandard-model physics. The SNS neutrino source will enable further CEvNS measurements, exploration of inelastic neutrino-nucleus interactions of particular relevance for understanding of supernova neutrinos, and searches for accelerator-produced sub-GeV dark matter. Taking advantage of this unique facility, COHERENT's suite of detectors in "Neutrino Alley" at the SNS is accumulating more data to address a broad physics program at the intersection of particle physics, nuclear physics, and astrophysics. This review describes COHERENT's first two CEvNS measurements, their interpretation, and the potential of a future physics program at the SNS.

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Measurement of scintillation response of CsI[Na] to low-energy nuclear recoils by COHERENT

Cited by 4 publications

References 43 publications

Probing light mediators and (g − 2)μ through detection of coherent elastic neutrino nucleus scattering at COHERENT

Probing light mediators and (g − 2)μ through detection of coherent elastic neutrino nucleus scattering at COHERENT

COHERENT at the Spallation Neutron Source

COHERENT at the Spallation Neutron Source

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