Hunting eta_b through radiative decay into J/psi

Abstract

We propose that the radiative decay process, η_b\to J/ψγ, may serve as a clean searching mode for η_b in hadron collision facilities. By a perturbative QCD calculation, we estimate the corresponding branching ratio to be of order 10^{-7}. Though very suppressed, this radiative decay channel in fact has larger branching ratio than the hadronic decay process η_b\to J/ψJ/ψ, which was previously hoped to be a viable mode for ferreting out η_b in Tevatron Run 2. The discovery potential of η_b through this channel seems promising in the forthcoming LHC experiments and maybe even in Tevatron Run 2, thanks to the huge statistics of η_b to be accumulated in these experiments. The same calculational scheme is also used to estimate the branching ratios for the processes η_b (η_c) \to ϕγ.

19 pages, 2 figures. References added/updated. Typo in Fig.1 fixed. Presentation refined. Connection with NRQCD, the major QCD bacground and the impact of NLO correction on the branching ratio are discussed

References in corpus (7)

• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• Model-independent Study of Magnetic Dipole Transitions in Quarkonium
• Which hadronic decay modes are good for ${\eta }_b$ searching: double $J/\psi$ or something else?
• Radiative decays of charmonium into light mesons
• Search for eta_b in two-photon collisions at LEP II with the DELPHI detector
• Radiative decays of bottomonia into charmonia and light mesons

Cited by in corpus (24)

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• Re-Study on the wave functions of ${\rm Y}(nS)$ states in LFQM and the radiative decays of ${\rm Y}(nS)\to {\eta }_b+\gamma$
• Refactorizing NRQCD short-distance coefficients in exclusive quarkonium production
• Exclusive $et{a}_b$ decay to double $J/\psi$ at next-to-leading order in $alph{a}_s$
• Transverse single spin asymmetry in hadronic ${\eta }_{c,b}$ production
• Curing the unphysical behaviour of NLO quarkonium production at the LHC and its relevance to constrain the gluon PDF at low scales
• Double charmonium production in exclusive bottomonia decays
• Pseudoscalar Quarkonium Exclusive Decays to Vector Meson Pair
• Analysis on Heavy Quarkonia Transitions with Pion Emission in Terms of the QCD Multipole Expansion and Determination of Mass Spectra of Hybrids
• Exclusive decay of P-wave Bottomonium into double J/ψ
• Investigation of the bottomonium ground state η_b via its inclusive charm decays
• Inclusive J/ψProduction In ΥDecay Via Color-singlet Mechanism
• Looking for New Physics via Semi-leptonic and Leptonic rare decays of $D$ and $D_s$
• Note on rare $Z$-boson decays to double heavy quarkonia
• The implication of $J/\psi \to (\gamma +)\mathrm{invisible}$ for the effective field theories of neutrino and dark matter
• $B^{(\ast )}{\bar{B}}^{(\ast )}$ intermediate state contribution to ${\rm Y}(4S,5S)\to {\eta }_b+\gamma$ radiative decay
• Next-to-leading-order QCD corrections to a vector bottomonium radiative decay into a charmonium
• Inclusive decays of ${\eta }_b$ into $S$- and $P$-wave charmonium states
• Analysis of $J/\psi ({\eta }_c)\to \gamma +$ invisible decays in the standard model
• EtabFDC: an ${\eta }_b$ event generator in hadroproduction at LHC
• Hunting for possible Higgs-like boson beyond the Standard Model
• Improved analysis of rare $Z$-boson decays into a heavy vector quarkonium plus lepton pair