Improving the global SMEFT picture with bounds on neutrino NSI

被引：3

作者：

Coloma, Pilar ^{[1
]}

Fernandez-Martinez, Enrique ^{[1
]}

Lopez-Pavon, Jacobo ^{[2
,3
]}

Marcano, Xabier ^{[1
]}

Naredo-Tuero, Daniel ^{[1
]}

Urrea, Salvador ^{[2
,3
,4
]}

机构：

[1] Univ Autonoma Madrid, Inst Fis Teor UAM CSIC, Cantoblanco, E-28049 Madrid, Spain

[2] Univ Valencia, Inst Fis Corpuscular, Edificio Inst Invest,Catedrat Jose Beltran 2, Valencia 46980, Spain

[3] CSIC, Edificio Inst Invest, Catedrat Jose Beltran 2, Paterna 46980, Valencia, Spain

[4] IN2P3, CNRS, Pole Theorie Bat 210, IJCLab, F-91405 Orsay, France

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2025年 / 02期

关键词：

Non-Standard Neutrino Properties; SMEFT; ELECTROWEAK PARAMETERS; PARITY NONCONSERVATION; MUON-NEUTRINOS; SOLAR; SCATTERING; PHYSICS; SEARCH; OSCILLATIONS; DECAYS; MATTER;

D O I：

10.1007/JHEP02(2025)137

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We analyze how neutrino oscillation and coherent elastic neutrino-nucleus scattering data impact the global SMEFT fit. We first review the mapping between the SMEFT parameters and the so-called NSI framework, commonly considered in the neutrino literature. We also present a detailed discussion of how the measurements for the normalization of neutrino fluxes and cross sections, that will also be affected by the new physics, indirectly impact the measured oscillation probabilities. We then analyze two well-motivated simplified scenarios. Firstly, we study a lepton flavour conserving case, usually assumed in global SMEFT analyses, showing the complementarity of neutrino oscillation and CE nu NS experiments with other low-energy observables. We find that the inclusion of neutrino data allows to constrain previously unbounded SMEFT operators involving the tau flavour and confirm the improvement of the constraint on a combination of Wilson coefficients previously identified. Moreover, we find that neutrino oscillation constraints on NSI are improved when embedded in the global SMEFT framework. Secondly, we study a lepton flavour violating scenario and find that neutrino data also improves over previously derived global constraints thanks to its sensitivity to new combinations of Wilson coefficients.

引用

页数：36

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