000169368 001__ 169368
000169368 005__ 20260225105429.0
000169368 0247_ $$2doi$$a10.1007/s10773-026-06263-y
000169368 0248_ $$2sideral$$a148327
000169368 037__ $$aART-2026-148327
000169368 041__ $$aeng
000169368 100__ $$0(orcid)0000-0002-9408-4406$$aPeñaranda, S.$$uUniversidad de Zaragoza
000169368 245__ $$aFlavour anomalies: a comparative analysis using a machine learning algorithm
000169368 260__ $$c2026
000169368 5060_ $$aAccess copy available to the general public$$fUnrestricted
000169368 5203_ $$aWe present an analysis on flavour anomalies in semileptonic rare B-meson decays using an effective field theory approach and assuming that new physics affects only one generation in the interaction basis and non-universal mixing effects are generated by the rotation to the mass basis. A global fit to experimental data is performed, focusing on LFU ratios RD(∗) and RJ /ψ and branching ratios that exhibit tensions with Standard Model predictions on B → K(∗) νν¯ decays. In our analysis, we use a Machine Learning Montecarlo algorithm, a framework that emulates the highly non-Gaussian structure of the likelihood landscape with minimal training cost. This method enables the generation of high-resolution confidence regions and detailed correlation analyses. By comparing three different scenarios, we show that the one that introduces only mixing between the second and third quark generations and no mixing in the lepton sector, as well as independent coefficients for the singlet and triplet four fermion effective operators, provides the best fit to the experimental data. A comparison with previous results is performed. We highlight the key strengths of the Machine Learning framework in our analysis.
000169368 536__ $$9info:eu-repo/grantAgreement/ES/DGA-FSE/E21-17R$$9info:eu-repo/grantAgreement/ES/MICINN/PGC2022-126078NB-C21
000169368 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es
000169368 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000169368 700__ $$aAlda, J.
000169368 700__ $$aMir, A.$$uUniversidad de Zaragoza
000169368 7102_ $$12004$$2405$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cÁrea Física Teórica
000169368 773__ $$g65, 2 (2026), [22 pp.]$$pInt. j. theor. phys.$$tInternational journal of theoretical physics$$x0020-7748
000169368 8564_ $$s1723184$$uhttps://zaguan.unizar.es/record/169368/files/texto_completo.pdf$$yVersión publicada
000169368 8564_ $$s1342645$$uhttps://zaguan.unizar.es/record/169368/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000169368 909CO $$ooai:zaguan.unizar.es:169368$$particulos$$pdriver
000169368 951__ $$a2026-02-24-14:47:41
000169368 980__ $$aARTICLE