CP-Violating and Charged Current Neutrino Non-standard Interactions in CE$ν$NS

Khan, Amir N.; McKay, Douglas W.; Rodejohann, Werner

doi:10.48550/arxiv.2104.00425

Cited by 4 publications

(4 citation statements)

References 58 publications

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“…This observation invalidates the bounds found in Ref. [45], where the indirect NP effect was not taken into account.…”

Section: Event Ratecontrasting

confidence: 75%

EFT analysis of New Physics at COHERENT

Bresó-Pla¹,

Falkowski²,

González–Alonso³

et al. 2023

Preprint

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Using an effective field theory approach, we study coherent neutrino scattering on nuclei, in the setup pertinent to the COHERENT experiment. We include non-standard effects both in neutrino production and detection, with an arbitrary flavor structure, with all leading Wilson coefficients simultaneously present, and without assuming factorization in flux times cross section. A concise description of the COHERENT event rate is obtained by introducing three generalized weak charges, which can be associated (in a certain sense) to the production and scattering of ν e , ν µ and νµ on the nuclear target. Our results are presented in a convenient form that can be trivially applied to specific New Physics scenarios. In particular, we find that existing COHERENT measurements provide percent level constraints on two combinations of Wilson coefficients. These constraints have a visible impact on the global SMEFT fit, even in the constrained flavor-blind setup. The improvement, which affects certain 4-fermion LLQQ operators, is significantly more important in a flavor-general SMEFT. Our work shows that COHERENT data should be included in electroweak precision studies from now on.

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“…This observation invalidates the bounds found in Ref. [45], where the indirect NP effect was not taken into account.…”

Section: Event Ratecontrasting

confidence: 75%

EFT analysis of New Physics at COHERENT

Bresó-Pla¹,

Falkowski²,

González–Alonso³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…[89]. dφ να (E ν )/dE ν is the flux corresponding to the flavor 'α' [115]. Here, N = (2m det /M CsI ) N A is the total number of CsI nucleons, m det = 14.57 kg, N A is the Avogadro's number, M CsI is the molar mass of CsI, E min ν = M T /2, M is the mass of the target nucleus, E max ν is the maximum neutrino energy.…”

Section: Jhep01(2023)052 3 Event Rate and Analysismentioning

confidence: 99%

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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“…Such a new interaction leads to a rich phenomenology in both scattering experiments and neutrino oscillation experiments. Various experimental data are being analyzed to see the bounds on such effects [54][55][56][57][58][59][60][61][62][63][64][65][66][67][68][69][70][71][72][73].…”

Section: Jhep06(2022)129mentioning

confidence: 99%

Exploring the effects of scalar non standard interactions on the CP violation sensitivity at DUNE

Medhi

Dutta

Devi

2022

J. High Energ. Phys.

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The Neutrino oscillations have provided an excellent opportunity to study new-physics beyond the Standard Model, popularly known as BSM. The unknown couplings involving neutrinos, termed non-standard interactions (NSI), may appear as ‘new-physics’ in different neutrino experiments. The neutrino NSI offers significant effects on neutrino oscillations and CP-sensitivity, which may be probed in various neutrino experiments. The idea of neutrinos coupling with a scalar has evolved recently and looks promising. The effects of scalar NSI may appear as a perturbation to the neutrino mass matrix in the neutrino Hamiltonian. It modifies the neutrino mass matrix and may provide a direct possibility of probing neutrino mass models. As the scalar NSI affects the neutrino mass matrix in the Hamiltonian, its effect is energy independent. Moreover, the matter effects due to scalar NSI scales linearly with the matter density.In this work, we have performed a model-independent study of the effects of scalar NSI at long baseline neutrino experiments, taking DUNE as a case study. We have performed such a thorough study for DUNE for the first time. Various neutrino parameters may get affected due to the inclusion of scalar NSI as it modifies the effective mass matrix of neutrinos. We have explored the impact of scalar NSI in neutrino oscillations and its impact on the measurements of various mixing parameters. We have probed the effects of scalar NSI on different oscillation channels relevant to the experiment. We have also explored the impact of various possible elements in the scalar NSI term on the CP-violation sensitivity at DUNE.

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CP-Violating and Charged Current Neutrino Non-standard Interactions in CE$ν$NS

Cited by 4 publications

References 58 publications

EFT analysis of New Physics at COHERENT

EFT analysis of New Physics at COHERENT

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

Exploring the effects of scalar non standard interactions on the CP violation sensitivity at DUNE

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