| Full text | |
| Author(s): |
Rosauro-Alcaraz, S.
;
Leal, L. P. S.
Total Authors: 2
|
| Document type: | Journal article |
| Source: | EUROPEAN PHYSICAL JOURNAL C; v. 84, n. 8, p. 16-pg., 2024-08-10. |
| Abstract | |
The first observation of B(B+-> K+nu nu)bythe Belle II experiment lies almost 3 sigma away from the Standard Model expectation. In this letter we study this result in the SMEFT, extended by a light right-handed neutrino. We explore the correlations between the measureddecay rate and other observables, such asB(B -> K & lowast;nu nu)andFL(B -> K & lowast;nu nu), showing that they could disentangle among scenarios involving left-handed neutrinos and those with the right-handed ones. Furthermore, we find that thehigh -p Ttails of D rell-Yan processes studied at LHC pro-vide important constraints that help us exclude some of the scenarios consistent with the Belle II result. (AU) | |
| FAPESP's process: | 23/00643-0 - Unveiling the origin of flavor of quarks and leptons |
| Grantee: | Renata Zukanovich Funchal |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 23/12330-7 - Neutrinos and leptoquarks |
| Grantee: | Luighi Pierre Santos Leal |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate |
| FAPESP's process: | 21/02283-6 - Neutrinos and Violation of the Lepton Charge |
| Grantee: | Luighi Pierre Santos Leal |
| Support Opportunities: | Scholarships in Brazil - Doctorate |