Thesis: Precise determination of the axial contribution to the coherent elastic neutrino-nucleus scattering event rate
| datacite.subject.fos | Natural sciences::Physical sciences::Particles and fields physics | |
| datacite.subject.fos | Natural sciences::Physical sciences::Nuclear physics | |
| dc.contributor.department | Departamento de Física | |
| dc.contributor.guia | Aristizabal Sierra, Diego | |
| dc.coverage.spatial | Campus Casa Central Valparaíso | |
| dc.creator | Trincado Saldibar, Laura Belen | |
| dc.date.accessioned | 2026-04-24T20:35:17Z | |
| dc.date.available | 2026-04-24T20:35:17Z | |
| dc.date.issued | 2026-04-24 | |
| dc.description.abstract | Coherent elastic neutrino–nucleus scattering (CEνNS) is a low-energy process within the Standard Model, characterized by an enhanced cross section due to the coherent vector weak charge. Although this dominant contribution has been thoroughly investigated, subleading axial-vector effects are typically considered suppressed and have consequently received limited attention. In this work, we present a systematic determination of the axial contribution to the CEνNS differential cross section within an effective field theory framework, incorporating spin-dependent nuclear structure factors from modern nuclear calculations. We identify target-dependent regimes in which the axial contribution is not strongly suppressed relative to the vector term, challenging the common assumption of its negligibility and providing a basis for precision CEνNS analyzes beyond the coherent approximation. | en_US |
| dc.description.abstract | La dispersión coherente elástica de neutrinos con núcleos (CEνNS) es un proceso de baja energía dentro del Modelo Estándar, caracterizado por una sección eficaz aumentada debido a la carga débil vectorial coherente. Aunque esta contribución dominante ha sido investigada exhaustivamente, los efectos axiales-vectoriales subdominantes suelen considerarse suprimidos y, en consecuencia, han recibido una atención limitada. En este trabajo, presentamos una determinación sistemática de la contribución axial a la sección eficaz diferencial de CEνNS dentro de un marco de teoría de campos efectiva, incorporando factores de estructura nuclear dependientes del espín provenientes de cálculos nucleares modernos. Identificamos regímenes dependientes del blanco en los cuales la contribución axial no está fuertemente suprimida en relación con el término vectorial, desafiando la suposición común de su despreciabilidad y proporcionando una base para análisis de CEνNS de alta precisión más allá de la aproximación coherente. | es |
| dc.description.degree | Magíster en Ciencias mención Física | |
| dc.description.sponsorship | FONDECYT-122144 | |
| dc.driver | info:eu-repo/semantics/masterThesis | |
| dc.format.extent | 93 páginas | |
| dc.identifier.doi | 10.71959/6spm-0736 | |
| dc.identifier.uri | https://cris.usm.cl/handle/123456789/4374 | |
| dc.identifier.uri | https://doi.org/10.71959/6spm-0736 | |
| dc.language.iso | en | |
| dc.publisher | Universidad Técnica Federico Santa María | |
| dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 International | en |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | |
| dc.subject | Coherent elastic neutrino–nucleus scattering | |
| dc.subject | axial contribution | |
| dc.subject | Shell model | |
| dc.subject | Multipole operators | |
| dc.subject | Nuclear structure factors | |
| dc.subject.ods | 9 Industria, innovación e infraestructura | |
| dc.title | Precise determination of the axial contribution to the coherent elastic neutrino-nucleus scattering event rate | |
| dspace.entity.type | Tesis |
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