Reactor neutrino oscillations as constraints on effective field theory

Autor(es)

Falkowski, Adam ; Gonzalez-Alonso, Martin ; Tabrizi, Zahra

• Tipo de documento: Artigo Científico
• Fonte: Journal of High Energy Physics; v. N/A, n. 5, p. 34-pg., 2019-05-27.

Resumo

We study constraints on the Standard Model Effective Field Theory (SMEFT) from neutrino oscillations in short-baseline reactor experiments. We calculate the survival probability of reactor antineutrinos at the leading order in the SMEFT expansion, that is including linear effects of dimension-6 operators. It is shown that, at this order, reactor experiments alone cannot probe charged-current contact interactions between leptons and quarks that are of the (pseudo)vector (V +/- A) or pseudo-scalar type. We also note that flavor-diagonal (pseudo)vector coefficients do not have observable effects in oscillation experiments. In this we reach novel or different conclusions than prior analyses of non-standard neutrino interactions. On the other hand, reactor experiments offer a unique opportunity to probe tensor and scalar SMEFT operators that are off-diagonal in the lepton-flavor space. We derive constraints on the corresponding SMEFT parameters using the most recent data from the Daya Bay and RENO experiments. (AU)

• Processo FAPESP: 16/02636-8 - Testando a física além do modelo padrão usando modelos com neutrinos estéreis
• Beneficiário: Zahra Khajeh Tabrizi
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado