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Showing 1 to 9 of 9 for “"charmonium states"”.
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Production of Charmonium States in 225 Gev/c Negative Pion Beryllium Interactions
… to perform a study of the hadronic production of charmonium. A 225 GeV/c negative pion beam was incident on a beryllium target. The trigger required a dimuon signature which favored opposite sign muon pairs with a large combined p(,(tau)). A search was then made for (chi) mesons of the charmonium …
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Production of charmonium states in 225 GeV/c pi-minus beryllium interactions
… to perform a study of the hadronic production of charmonium. A 225 GeV/c negative pion beam was incident on a beryllium target. The trigger required a dimuon signature which favored opposite sign muon pairs with a large combined PT. A search was then made for psi mesons of the charmonium spectrum …
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Measurement Of Branching Fractions Of Rare Semi-Leptonic Ds Decays Ds → π0 L ν, Ds →ρ L ν, Ds →ks L ν (near ϒ (4s), ϒ (5s)) At Belle
… of charm quark and anti-charm quark are known as charmonium states. Different inspections of exotic charmonium states have been understood as 4-quark states. Charmonium states are produced via e+e− annihilation. We search at Belle, based on 119000 tagged events in the ϒ (4S) and ϒ (5S) energy …
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Radiative Transitions in Charmonium
… this thesis, we analyse radiative transitions in charmonium using Lattice QCD, to provide insight into the internal structure and photocoupling of charmonium states. Distillation is used to allow the efficient computation of a high number of correlation functions, leading to the construction of …
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Measurement of the dipion mass spectrum in the decay X(3872) [right arrow] J/ [psi] [pi]⁺ [pi]⁻ at the CDFII experiment
… QCD multipole expansion predictions for various charmonium states, as well as to the hypothesis [right arrow] J/ [psi] po. We find that the measured spectrum is compatible with 3S1 charmonium decaying to J/ [psi] [pi]⁺ [pi]⁻ - and with the X(3872) - J/po hypothesis. There is, however, no 3S1 …
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Charmonium correlation and spectral functions in quenched lattice QCD at finite temperature
… thesis, we have investigated the properties of charmonium states at finite temperature in quenched QCD on isotropic lattices. The standard Wilson plaquette action for the gauge field and the non-perturbatively $cO(a)$ improved clover fermion action for charm quarks are implemented in the …
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Resolution Studies for the Micro Vertex Detector of the PANDA Experiment and the Reconstruction of Charmed Mesons for Specific Hadronic Channels
… reactions such as the spectroscopy of the charmonium system. To ensure different studies of hadronic systems an universal detector is being designed, the PANDA detector. A high resolution Micro Vertex Detector (MVD), as part of the whole setup, is an important component of the track and …
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Determination of the X(3872) Meson Quantum Numbers
… of the candidates for a four-quark state is the charmonium-like state X(3872) which was first observed by the Belle experiment in 2003. This narrow state has a mass of about 3872 MeV which is located in a region of excited charmonium states (cc-bar). However its mass does not match to any …
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Exotic charm resonances and coupled-channel scattering from lattice QCD
… confining of quarks and gluons into composite states called hadrons, of which the proton and neutron are two examples amongst many. However, this strong coupling also renders the conventional perturbative methods inapplicable, and so there is little analytical understanding of these hadrons. …