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Advances in High Energy Physics
Volume 2018, Article ID 7231354, 13 pages
Research Article

Probing the Effects of New Physics in Decays

1Institute of Particle and Nuclear Physics, Henan Normal University, Henan 453007, China
2Institute of Theoretical Physics, Xinyang Normal University, Henan 464000, China

Correspondence should be addressed to Qin Chang; nc.ude.uth@niqgnahc

Received 4 June 2018; Accepted 2 August 2018; Published 27 September 2018

Academic Editor: Enrico Lunghi

Copyright © 2018 Qin Chang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The publication of this article was funded by SCOAP3.


The significant divergence between the SM predictions and experimental measurements for the ratios, with , implies possible hint of new physics in the flavor sector. In this paper, motivated by the “ puzzle” and abundant data samples at high-luminosity heavy-flavor experiments in the future, we try to probe possible effects of new physics in the semileptonic decays induced by transitions in the model-independent vector and scalar scenarios. Using the spaces of NP parameters obtained by fitting to the data of and , the NP effects on the observables including branching fraction, ratio , lepton spin asymmetry, and lepton forward-backward asymmetry are studied in detail. We find that the vector type couplings have large effects on the branching fraction and ratio . Meanwhile, the scalar type couplings provide significant contributions to all of the observables. The future measurements of these observables in the decays at the LHCb and Belle-II could provide a way to crosscheck the various NP solutions to the “ puzzle”.