منابع مشابه
Heavy Quarkonia
Recent experimental results on heavy quarkonia spectroscopy and decays are reviewed. In particular, new results are discussed on charmonium spin singlet states, bottomonium D-states, photon and hadronic transitions from heavy quarkonium states, and the unexplained narrow X(3872) state.
متن کاملFinal State Interaction in Heavy Hadron Decay
Though nothing is known for B → ππ,Kπ,KK, we might conjecture that the FSI phases diminish as the initial mass increases. Meanwhile the relative FSI phase is known for the ggg and ”γ” decay amplitudes of the J/ψ decays: 3 ∆δ ≈ 90 and 75 for J/ψ → 00 and 01, respectively. Therefore, if the FSI phases diminish with the increasing initial mass, it should start diminishing somewhere between mJ/ψ an...
متن کاملPhotoproduction of Heavy Quarkonia
We investigate the reaction γp → V p, with V denoting a Φ or a J/Ψ meson, within the scope of perturbative QCD, treating the proton as a quark-diquark system. Our predictions extrapolate the existing forward differential cross-section data into the few-GeV momentum-transfer region. In case of the J/Ψ reasonable results are only obtained by properly taking into account its mass in the perturbati...
متن کاملSpectroscopy of Heavy Quarkonia
In the last few years, the CLEO III experiment has recorded a large collection of data sets at the Υ(1S), Υ(2S), Υ(3S) and ψ(2S) resonances. Preliminary results of studies of these data sets are shown here, which include the observation of a new Υ(1D) state, as well as several hadronic and radiative transitions of Υ and ψ(2S) states. In addition, precision branching ratio measurements of charmo...
متن کاملProduction of heavy quarks and heavy quarkonia
Uncertainties in the next-to-leading-order calculations of heavyquark (Q) production are investigated. Predictions for total cross sections, single-inclusive distributions of heavy quarks and heavy flavoured hadrons, as well as for QQ̄ correlations, are compared with charm and bottom data. The description of heavy-quarkonium production requires a separation of the short-distance scale of QQ̄ prod...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2012
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.85.034012