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Lepton transverse polarization in the B→Dlvl decay due to the electromagnetic final state interaction
(2002-01-01)
The effect of lepton transverse polarization in B0 → D - l+ νl, B+ → D̄0 l+ νl decays (l = τ,μ) is analyzed within the framework of the standard model in the leading order of heavy quark effective theory. It is shown that ...
Search of the B c + → η c μ + ν μ decay with LHCb data.
(Bogotá - Ciencias - Maestría en Ciencias - FísicaFacultad de CienciasBogotá, ColombiaUniversidad Nacional de Colombia - Sede Bogotá, 2023)
Using pp collisions corresponding to 4fb −1 integrated luminosity, recorded by the LHCb experiment at centre-of-mass energies of 13TeV, the ratio of branching fractions
B(B c + → η c μ + ν μ )/B(B c → J/ψ μ ν μ )= (3.49 ...
Final taus and initial state polarization signatures from effective interactions of Majorana neutrinos at future e + e - colliders
(Springer, 2019-03)
We study the possibility of future e + e - colliders to disentangle different new physics contributions to the production of heavy sterile Majorana neutrinos in the lepton number violating channel e + e - → l + l + + 4 ...
Final taus and initial state polarization signatures from effective interactions of Majorana neutrinos at future e+e− colliders
(Springer, 2019)
We study the possibility of future e+e− colliders to disentangle different new physics contributions to the production of heavy sterile Majorana neutrinos in the lepton number violating channel e+e− → l+l+ + 4jets, with l ...
Modelos U(1)' con y sin universalidad de sabor leptónica
(Universidad Nacional de ColombiaBogotá - Ciencias - Doctorado en Ciencias - FísicaFacultad de CienciasBogotá, ColombiaUniversidad Nacional de Colombia - Sede Bogotá, 2022)
Se realiza un análisis fenomenológico en el marco de dos extensiones abelianas del grupo del Modelo Estándar de partículas elementales, uno universal en las familias de leptones y el otro no universal que distingue estas ...