Bounds on new physics with data of the Dresden-II reactor experiment and COHERENT

Coloma, Pilar; Esteban, Ivan; González-García, M. C.; Leire, Larizgoitia,; Monrabal, F.; Palomares‐Ruiz, Sergio

doi:10.1007/jhep05(2022)037

Cited by 29 publications

(31 citation statements)

References 93 publications

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“…We notice that the Borexino bounds are stronger than those obtained by other experiments under the same flavour assumptions and CL. This is the case for the (over a decade old) experimental results of GEMMA [9,41] (µ ν < 2.9 × 10 −11 µ B ) and TEX-ONO [8] (µ ν < 7.4 × −11 µ B ), as well as the bounds derived from recent results such as CONUS [42] (µ ν < 7.5 × 10 −11 µ B ) and the combined analysis of Dresden-II and COHER-ENT [15] (µ ν < 1.8 × −10 µ B ).…”

Section: Neutrino Magnetic Momentmentioning

confidence: 65%

“…• bounds from CEνNS measurements (on both CsI and Ar nuclei) at COHERENT [16,48] and at the Dresden-II reactor experiment [14], computed as in Ref. [15] (based on the analysis performed in Refs. [46,49]).…”

Section: Light Vector Mediatorsmentioning

confidence: 99%

“…This is so because for the universal model shown the scalar coupling to quarks would lead to additional contributions to CEνNS at the Dresden-II experiment (as well as for CONNIE and CONUS), which enhances their sensitivity in the high-mass region (see, e.g., Ref. [15]). Conversely, in the pseudoscalar scenario our bounds from Borexino dominate for mediator masses M ϕ 5 MeV, with TEXONO being the only other experiment which provides a comparable result.…”

Section: Light Scalar and Pseudoscalar Mediatorsmentioning

confidence: 99%

“…Neutrino electron elastic scattering (ES) can also be searched for at experiments designed to detect Coherent Elastic neutrino-Nucleus Scattering (CEνNS): while the signal in the SM would be too low to yield a significant number of events, the presence of BSM physics may lead to much larger contributions. In fact, CEνNS searches using reactor neutrinos at the CONUS [11,12], CONNIE [13], and Dresden-II reactor experiments [14,15] lead to very strong constraints on some of the BSM scenarios outlined above. Similar searches can be performed using pion decay-at-rest (DAR) sources: for example, the data of the COHERENT experiment on CsI [16] should be sensitive to an ES signal as well [15] since it would pass their signal selection cuts.…”

Section: Introductionmentioning

confidence: 99%

“…In fact, CEνNS searches using reactor neutrinos at the CONUS [11,12], CONNIE [13], and Dresden-II reactor experiments [14,15] lead to very strong constraints on some of the BSM scenarios outlined above. Similar searches can be performed using pion decay-at-rest (DAR) sources: for example, the data of the COHERENT experiment on CsI [16] should be sensitive to an ES signal as well [15] since it would pass their signal selection cuts.…”

Section: Introductionmentioning

confidence: 99%

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Constraining New Physics with Borexino Phase-II spectral data

Coloma,

Gonzalez-Garcia,

Maltoni

et al. 2022

Preprint

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We present a detailed analysis of the spectral data of Borexino Phase II, with the aim of exploiting its full potential to constrain scenarios beyond the Standard Model. In particular, we quantify the constraints imposed on neutrino magnetic moments, neutrino non-standard interactions, and several simplified models with light scalar, pseudoscalar or vector mediators. Our analysis shows perfect agreement with those performed by the collaboration on neutrino magnetic moments and neutrino non-standard interactions in the same restricted cases and expands beyond those, stressing the interplay between flavour oscillations and and flavour non-diagonal interaction effects for the correct evaluation of the event rates. For simplified models with light mediators we show the power of the spectral data to obtain robust limits beyond those previously estimated in the literature.

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Section: Neutrino Magnetic Momentmentioning

confidence: 65%

Section: Light Vector Mediatorsmentioning

confidence: 99%

Section: Light Scalar and Pseudoscalar Mediatorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Constraining New Physics with Borexino Phase-II spectral data

Coloma,

Gonzalez-Garcia,

Maltoni

et al. 2022

Preprint

Self Cite

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Extra dimensions with light and heavy neutral leptons: an application to CEνNS

Khan

2023

J. High Energ. Phys.

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We explore the possibility of relating extra dimensions with light and heavy Dirac-type neutral leptons and develop a framework for testing them in various laboratory experiments. The Kaluza-Klein modes in the large extra dimension models of the light neutral leptons could mix with the standard model neutrinos and produce observable effects in the oscillation experiments. We show that the chirality flipping up-scattering processes occurring through either neutrino magnetic dipole moment or the weakly coupled scalar interactions can also produce heavy Kaluza-Klein modes of the corresponding right-handed neutral leptons propagating in one or more extra dimensions. However, to conserve the four- dimensional energy-momentum, their masses must be below the maximum energy of the neutrinos in the initial state. The appreciable size of extra dimensions connected with these heavy neutral leptons can thus affect the cross-sections of these processes. This framework applies to any up-scattering process. Our work here focuses only on its application to the coherent elastic neutrino-nucleus scattering process. We derive constraints on the size of extra dimensions using the COHERENT data in oscillation and up-scattering processes. For model with one large extra dimension for the light neutral leptons, we obtain the limits, R ~ 3 μm (NH) and R ~ 2.5 μm (IH), on the size of extra dimension corresponding to the absolute mass limit, m0 ≤ 3 × 10−3 eV at 90% C.L. from the short-baseline oscillations. Using the up-scattering process for heavy neutral leptons, we obtain new parameter spaces between the size of extra dimensions and parameters of the dipole or scalar interactions.

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Physics implications of a combined analysis of COHERENT CsI and LAr data

Romeri

Miranda

Papoulias

et al. 2023

J. High Energ. Phys.

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The observation of coherent elastic neutrino nucleus scattering has opened the window to many physics opportunities. This process has been measured by the COHERENT Collaboration using two different targets, first CsI and then argon. Recently, the COHERENT Collaboration has updated the CsI data analysis with a higher statistics and an improved understanding of systematics. Here we perform a detailed statistical analysis of the full CsI data and combine it with the previous argon result. We discuss a vast array of implications, from tests of the Standard Model to new physics probes. In our analyses we take into account experimental uncertainties associated to the efficiency as well as the timing distribution of neutrino fluxes, making our results rather robust. In particular, we update previous measurements of the weak mixing angle and the neutron root mean square charge radius for CsI and argon. We also update the constraints on new physics scenarios including neutrino nonstandard interactions and the most general case of neutrino generalized interactions, as well as the possibility of light mediators. Finally, constraints on neutrino electromagnetic properties are also examined, including the conversion to sterile neutrino states. In many cases, the inclusion of the recent CsI data leads to a dramatic improvement of bounds.

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Bounds on new physics with data of the Dresden-II reactor experiment and COHERENT

Cited by 29 publications

References 93 publications

Constraining New Physics with Borexino Phase-II spectral data

Constraining New Physics with Borexino Phase-II spectral data

Extra dimensions with light and heavy neutral leptons: an application to CEνNS

Physics implications of a combined analysis of COHERENT CsI and LAr data

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