Analysis of the nonleptonic charmonium modes Bs0→J/ψf2′(1525) and Bs0→J/ψK+K

• Published in: Physical review. D 2017-02, Vol.95 (3), p.036013
• Main Authors: Morales, César A, Quintero, Néstor, Vera, Carlos E, Villalba, Alexis
• Format: Article
• Language: English
• Subjects: Form factors
• ISSN: 2470-0010; 2470-0029
• DOI: 10.1103/PhysRevD.95.036013

In this work, we present an analysis of the nonleptonic charmonium modes Bs0→J/ψf2′(1525) and Bs0→J/ψK+K−. Within the framework of the factorization approach and using the perturbative QCD for the evaluation of the relevant form factors, we find a branching fraction for the two-body channel of BR(Bs0→J/ψf2′(1525))=(1.6−0.7+0.9)×10−4 which is in agreement with the experimental values reported by the LHCb and Belle Collaborations. The associated polarization fractions to this vector-tensor mode are also presented. On the other hand, nonresonant and resonant contributions to the three-body decay Bs0→J/ψK+K− are carefully investigated. The dominant contributions of the resonances ϕ(1020) and f2′(1525) are properly taken into account. A detailed analysis of the K+K− invariant mass distributions and Dalitz plot are also performed. The overall result BR(Bs0→J/ψK+K−)=(9.3−1.1+1.3)×10−4 is also in satisfactory agreement with the experimental information reported by LHCb and Belle.