Charged current b → cτν -τ anomalies in a general W' boson scenario

Rojas, Eduardo (2019) Charged current b → cτν -τ anomalies in a general W' boson scenario. In: Workshop de Materia Oscura en Colombia (MOCa 2019), Universidad de los Andes, Bogotá. (Unpublished)

	Text Eduardo.pdf Download (94kB)
	Text socializacion.pdf Download (33kB)
	Text book-of-abstracts.pdf Download (102kB)

Resumen

The very recent experimental information obtained from Belle experiment, along with the one accu- mulated by the BABAR and LHCb experiments have shown the existence of anomalies in the ratios R(D) and R(D ∗ ) associated with the charged current transition b → cτν ̄τ . Although the Belle measurements are in agreement with the SM predictions, the new experimental world averages still exhibit tension. In addition, the D ∗ longitudinal polarization FL(D ∗ ) related to the channel B → D ∗ τν ̄τ observed by the Belle and the ratio R(J/ψ) measured by the LHCb also show discrepancies with their corresponding SM estimations. In this work, we present a model-independent study based on the most general effective Lagrangian that yields to a tree-level effective contribution to the tran- sition b → cτν ̄τ induced by a general W0 gauge boson. Instead of considering any specific new physics (NP) realization, we performed an analysis by considering all the different chiral charges to the charm-bottom and τ -ντ interaction terms with a charged W0 boson that explain the anoma- lies. We present a phenomenological study of parameter space allowed by the new experimental b → cτν ̄τ data and with the mono-tau signature pp → τhX + MET at the LHC. For comparison, we include some of the W0 boson NP realizations that have already been studied in the literature

Tipo de Elemento:	Conferencia o Taller artículo (Speech)
Asunto:	Q Ciencias > QC Physics
Division:	Facultad de Ciencias Exactas y Naturales > Programa de Física > Eventos
Depósito de Usuario:	Prof. Eduardo Rojas
Fecha Deposito:	10 Dec 2021 15:50
Ultima Modificación:	10 Dec 2021 15:50
URI:	http://sired.udenar.edu.co/id/eprint/7080

Ver Elemento