$B_c$ meson exclusive decays to a $P$-wave charmonium and a pion at NLO accuracy

Abstract

In this paper, we calculate the next-to-leading order (NLO) quantum chromodynamics (QCD) corrections to the exclusive processes $B_c^{+}\to {\chi }_{cJ}(h_c){\pi }^{+}$ in the framework of the nonrelativistic QCD (NRQCD) factorization formalism. The results show that NLO QCD corrections markedly enhance the branching ratios with $K$ factors of about 2.5. In combination with the study of $B_c^{+}\to J/\psi {\pi }^{+}$, we find that the NLO NRQCD prediction for the ratio of branching fractions $\frac{\mathcal{B}(B_c^{+}\to {\chi }_{c0}{\pi }^{+})}{\mathcal{B}(B_c^{+}\to J/\psi {\pi }^{+})}$ is then compatible with the experimental measurement.

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References in corpus (10)

• Exclusive semileptonic and nonleptonic decays of the Bc meson
• Study of exclusive semileptonic and nonleptonic decays of $B_c^{-}$ in a nonrelativistic quark model
• Measurement of the Bc meson mass in the exclusive decay Bc --> Jpsi Pi
• Observation of two excited B${}_{\mathrm{c}}^{+}$ states and measurement of the B${}_{\mathrm{c}}^{+}$(2S) mass in pp collisions at $\sqrt{s}=$ 13 TeV
• Measurement of $B_c^{+}$ production in proton-proton collisions at $\sqrt{s}=8$ TeV
• Observation of an excited $B_c^{+}$ state
• Measurement of the lifetime of the B_c meson in the semileptonic decay channel
• Extraction of alpha_s from radiative Upsilon(1S) decays
• Study of $B_c^{+}$ decays to the $K^{+}{K}^{-}{\pi }^{+}$ final state and evidence for the decay $B_c^{+}\to {\chi }_{c0}{\pi }^{+}$
• Precision measurement of the $B_c^{+}$ meson mass

Cited by in corpus (1)

• Nonleptonic $B_c$ decay rates from model independent relations