Systematic analysis of the form factors of $B_c\to {\eta }_c$, $J/\psi$ and corresponding weak decays

Abstract

The form factors of $B_c\to {\eta }_c$ and $B_c\to J/\psi$ are analyzed in the framework of three-point QCD sum rules. In these analyses, the contributions of the vacuum condensate terms $⟨g_s^{2}GG⟩$ and $⟨g_s^{3}GGGf⟩$ are considered. In addition, the decay widths and branching ratios of several decay channels are obtained by using the calculated form factors. These decay processes include the nonleptonic decays of $B_c^{-}\to {\eta }_c{\pi }^{-}$, ${\eta }_c{K}^{-}$, ${\eta }_c{\rho }^{-}$, ${\eta }_c{K}^{\ast -}$, $B_c^{-}\to J/\psi {\pi }^{-}$, $J/\psi K^{-}$, $J/\psi {\rho }^{-}$, $J/\psi K^{\ast -}$, and the semileptonic decays of $B_c^{-}\to {\eta }_{c}l\bar{\nu }$, $B_c^{-}\to J/\psi l\bar{\nu }$. These results about the form factors and decay properties of $B_c$ meson provide useful information for us to study the heavy-quark dynamics and find new physics(NP) beyond Standard Model(SM).

References in corpus (55)

• Weak Decays Beyond Leading Logarithms
• QCD Factorization for $B\to \pi \pi$ Decays: Strong Phases and CP Violation in the Heavy Quark Limit
• QCD factorization for exclusive, non-leptonic B meson decays: General arguments and the case of heavy-light final states
• Model-independent description of $B\to \pi l\nu$ decays and a determination of $|V_{ub}|$
• Constraints on Form Factors For Exclusive Semileptonic Heavy to Light Meson Decays
• Measurement of the ratio of branching fractions $\mathcal{B}(B_c^{+}\to J/\psi {\tau }^{+}{\nu }_{\tau })$/$\mathcal{B}(B_c^{+}\to J/\psi {\mu }^{+}{\nu }_{\mu })$
• Observation of B_c Mesons in p-bar p Collisions at sqrt{s} = 1.8 TeV
• An analysis of two-body non-leptonic B decays involving light mesons in the standard model
• Weak decays of the B_c meson to charmonium and D mesons in the relativistic quark model
• B_c Decays and Lifetime in QCD Sum Rules
• QCD Calculation of the $B\to \pi ,K$ Form Factors
• Gluon Condensates and m_{c,b} from QCD-Moments and their ratios to Order alpha_s^3 and <G^4>
• Semileptonic B_c-meson decays in sum rules of QCD and NRQCD
• Lattice QCD and QCD Sum Rule determination of the decay constants of eta_c, J/psi and hc states
• Gluon Condensates and m_b(m_b) from QCD-Exponential Moments at Higher Orders
• QCD corrections to $B\to \pi$ form factors from light-cone sum rules
• Semileptonic decays $B_c\to ({\eta }_c,J/\Psi )l\nu$ in the perturbative QCD approach
• Gluon condensates and c, b quark masses from quarkonia ratios of moments
• CP violation and kaon-pion interactions in B --> K pi+ pi- decays
• Measurements of $B_c^{+}$ production and mass with the $B_c^{+}\to J/\psi {\pi }^{+}$ decay
• Implications of new physics in the decays $B_c\to (J/\psi ,{\eta }_c)\tau \nu$
• Charm couplings and form factors in QCD sum rules
• QCD Sum Rule Analysis for the Λ_b to Λ_c Semileptonic Decay
• Semileptonic $B_c$ decays and Charmonium distribution amplitude
• The masses and residues of doubly heavy spin--3/2 baryons
• $B_c$ Exclusive Decays to Charmonium and a Light Meson at Next-to-Leading Order Accuracy
• The transition form factors for semi-leptonic weak decays of $J/\psi$ in QCD sum rules
• Revisiting charmless hadronic B decays to scalar mesons
• QCD Sum Rules Analysis of Weak Decays of Doubly-Heavy Baryons
• Decays of the $B_c$ Meson in a Relativistic Quark-Meson Model
• $B_c\to J/\psi$ Form Factors for the full $q^2$ range from Lattice QCD
• Measurement of the $B_c^{+}$ meson lifetime using $B_c^{+}\to J/\psi {\mu }^{+}{\nu }_{\mu }X$ decays
• Analysis of the vector and axialvector $B_c$ mesons with QCD sum rules
• Gauge Invariant and Infrared Finite Theory of Nonleptonic Heavy Meson Decays
• Weak productions of new charmonium in semi-leptonic decays of B_c
• The semi-leptonic form factors of ${\Lambda }_b\to {\Lambda }_c$ and ${\Xi }_b\to {\Xi }_c$ in QCD sum rules
• $B_c\to B_{sJ}$ form factors and $B_c$ decays into $B_{sJ}$ in covariant light-front approach
• Lepton flavor universality violation in semileptonic tree level weak transitions
• Analysis of the strong coupling constant $G_{D_s^{\ast }{D}_s\varphi }$ and the decay width of $D_s^{\ast }\to D_s\gamma$ with QCD sum rules
• Covariant Light-Front Approach for $B_c$ Decays into Charmonium: Implications on Form Factors and Branching Ratios
• Improved perturbative QCD formalism for $B_c$ meson decays
• Relativistic description of the semileptonic decays of bottom mesons
• Study of $CP$ Violation in $B^{-}\to K^{-}{\pi }^{+}{\pi }^{-}$ and $B^{-}\to K^{-}\sigma (600)$ decays in the QCD factorization approach
• D Wave Heavy Mesons
• ${\Lambda }_c$ semileptonic decays
• The radiative decays $B_c^{\ast \pm }\to B_c^{\pm }\gamma$ with QCD sum rules
• Next-to-leading-logarithm $k_T$ resummation for $B_c\to J/\psi$ decays
• The $B_c$ meson and its scalar cousin with the QCD sum rules
• Scrutinizing New Physics in Semi-leptonic $B_c\to J/\psi \tau \nu$ Decay
• The strong vertices of charmed mesons $D$, $D^{\ast }$ and charmonia $J/\psi$, ${\eta }_c$
• Analysis of the strong vertices of ${\Sigma }_c\Delta D^{\ast }$ and ${\Sigma }_b\Delta B^{\ast }$ in QCD sum rules
• The $B_c$-decays $B_c^{+}\to J/\psi {\pi }^{+}{\pi }^{-}{\pi }^{+}$, ${\eta }_c{\pi }^{+}{\pi }^{-}{\pi }^{+}$
• The strong vertices of bottom mesons $B$, $B^{\ast }$ and bottomonia ${\rm Y}$, ${\eta }_b$
• Analysis of the electromagnetic form factors and the radiative decays of the vector heavy-light mesons
• General Theoretical Introduction to Hadronic $B$ Decays

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• Analysis of the strong vertices ${\Lambda }_c{D}^{(\ast )}{N}^{\ast }(1535)$ and ${\Lambda }_b{B}^{(\ast )}{N}^{\ast }(1535)$ in QCD sum rules
• Systematic analysis of the transition form factors of $B_c$ to $D$-wave charmonia and corresponding semileptonic decays
• Systematic analysis of the form factors of $B_c$ to $P$-wave charmonia and corresponding weak decays
• Baryons and baryoniums in the perspective of QCD sum rules
• Analysis of the form factors of $B_c\to D^{(\ast )}$, $D_s^{(\ast )}$ and their nonleptonic decays