The Bc→ψ(2S)π, ηc(2S)π decays in the perturbative QCD approach View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2015-06

AUTHORS

Zhou Rui, Wen-Fei Wang, Guang-xin Wang, Li-hua Song, Cai-Dian Lü

ABSTRACT

Nonleptonic two-body Bc decays including radially excited ψ(2S) or ηc(2S) mesons in the final state are studied using the perturbative QCD approach based on kT factorization. The charmonium distribution amplitudes are extracted from the n=2,l=0 Schrödinger states for the harmonic oscillator potential. Utilizing these distribution amplitudes, we calculate the numerical results of the Bc→ψ(2S),ηc(2S) transition form factors and branching fractions of Bc→ψ(2S)π,ηc(2S)π decays. The ratio between two decay modes Bc→ψ(2S)π and Bc→J/ψπ is compatible with the experimental data within uncertainties, which indicates that the harmonic-oscillator wave functions for ψ(2S) and ηc(2S) work well. It is found that the branching fraction of Bc→ηc(2S)π, which is dominated by the twist-3 charmonium distribution amplitude, can reach the order of 10-3. We hope it can be measured soon in the LHCb experiment. More... »

PAGES

293

Identifiers

URI

http://scigraph.springernature.com/pub.10.1140/epjc/s10052-015-3528-0

DOI

http://dx.doi.org/10.1140/epjc/s10052-015-3528-0

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1035201296


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