Decay eta_b->J/ψJ/ψin light cone formalism

Abstract

The decays of pseudoscalar bottomonium eta_b into a pair of vector charmonia, J/ψJ/ψ, J/ψψ', ψ' ψ' are considered in the light cone formalism. Relativistic and leading logarithmic radiative corrections to the amplitudes of these processes are resummed. It is shown that the small value for the branching ratio of the decay eta_b-> J/ψJ/ψobtained within the leading order nonrelativistic QCD is a consequence of a fine-tuning between certain parameters, which is broken when relativistic and leading logarithmic radiative corrections are taken into account. As a result, the branching ratio obtained in this paper is enhanced by an order of magnitude.

7 pages, 1 figure

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Cited by in corpus (17)

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• NRQCD matrix elements for S-wave bottomonia and Gamma[eta_b(nS) -> gamma gamma] with relativistic corrections
• The leading twist light-cone distribution amplitudes for the S-wave and P-wave quarkonia and their applications in single quarkonium exclusive productions
• Comparison of two Minkowski-space approaches to heavy quarkonia
• Pseudoscalar Quarkonium Exclusive Decays to Vector Meson Pair
• Double Charmonia Production in Exclusive $Z$ Boson Decays
• Exclusive decay of P-wave Bottomonium into double J/ψ
• Exclusive decay of ${\rm Y}$ into $J/\psi +{\chi }_{c0,1,2}$
• The Exclusive Decay of Upsilon into $h_c$, the $X(3940)$ and $X(4160)$
• Evidence of ${\rm Y}(1S)\to J/\psi +{\chi }_{c1}$ and search for double-charmonium production in ${\rm Y}(1S)$ and ${\rm Y}(2S)$ decays
• Probing light pseudoscalar, axial vector states through ${\eta }_b\to {\tau }^{+}{\tau }^{-}$
• NLO corrections to ${\chi }_{bJ}$ to two-$J/\psi$ exclusive decay processes
• Relativistic corrections to ${\rm Y}$ exclusive decay into double $S-$wave charmonia
• Mass of nonrelativistic meson from leading twist distribution amplitudes
• Radiative $B_c$ meson decays $B_c\to \gamma u\bar{d}$
• Properties of the quark-antiquark-gluon Fock state in the η_c meson
• Ground state pseudoscalar mesons on the light front: from the light to heavy sector