QCD sum rules analysis of the rare $B_c \rar Xν\barν$ decays

Abstract

Taking into account the gluon correction contributions to the correlation function, the form factors relevant to the rare $B_c \rar X ν\barν$ decays are calculated in the framework of the three point QCD sum rules, where $X$ stands for axial vector particle, $AV(D_{s1})$, and vector particles, $V(D^{\ast },D_s^{\ast })$. The total decay width as well as the branching ratio of these decays are evaluated using the $q^2$ dependent expressions of the form factors. A comparison of our results with the predictions of the relativistic constituent quark model is presented.

arXiv comment21 Pages, 2 Figures and 5 Tables

References in corpus (23)

• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• Effective Hamiltonian for $B \ra X_s e^+ e^-$ Beyond Leading Logarithms in the NDR and HV Schemes
• QCD at Low Energies
• Z^0 Decay into Charmonium via Charm Quark Fragmentation
• Exclusive semileptonic and nonleptonic decays of the Bc meson
• Observation of B_c Mesons in p-bar p Collisions at sqrt{s} = 1.8 TeV
• Phenomenology of non-standard Z couplings in exclusive semileptonic b -> s transitions
• Perturbative QCD Fragmentation Functions for $B_c$ and $B_c^{\ast }$ Production
• Physics of B_c mesons
• Semileptonic B_c-meson decays in sum rules of QCD and NRQCD
• Search for Dark Matter in b -> s Transitions with Missing Energy
• Radiative transitions of $D_{sJ}^{\ast }(2317)$ and $D_{sJ}(2460)$
• Decay Constants of B and D Mesons from Non-perturbatively Improved Lattice QCD
• Measurement of the B_c Meson Lifetime Using B_c ->J/Psi e nu
• $B_c$ Mesons Production at Hadron Colliders by Heavy Quark Fragmentation
• Exclusive semileptonic B_s decays to excited D_s mesons: Search of D_{sJ}(2317) and D_{sJ}(2460)
• B_c -> l nu gamma decay in light cone QCD
• The Effects of Fourth Generation on the Total Branching Ratio and the Lepton Polarization in $Λ_b \rar Λ\ell^+ \ell^-$ decay
• Analysis of the semileptonic (B_c -> B_u* l+ l-) decay from QCD sum rules
• More about on the short distance contribution to the "B_c -> B_u^* gamma" decay
• QCD sum rules analysis of the rare radiative Bc -> D*_s gamma decay
• Exclusive radiative weak decays of B_c meson in light cone QCD

Cited by in corpus (6)

• Analysis of the rare semileptonic $B_c \rar P(D,D_s) l^{+}l^{-}/ν\barν$ decays within QCD sum rules
• Semileptonic B_{c} to P-Wave Charmonia Transitions within QCD Sum Rules
• The radiative decays $B_c^{\ast \pm }\to B_c^{\pm }\gamma$ with QCD sum rules
• Semileptonic $B_c^{-}\to D^{\ast 0}\ell \nu$ transition in three--point QCD sum rules and HQET with gluon condensate corrections
• Investigation of the $D_{s1}$ structure via $B_c$ to $D_{s1}{l}^{+}{l}^{-}/\nu \bar{\nu }$ transitions in QCD
• Rare Radiative $B_c\to D_{s1}(2460)\gamma$ Transition in QCD