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Showing 1 to 4 of 4 for “"X(3872)"”.
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Determination of the X(3872) Meson Quantum Numbers
… 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 theoretically predicted …
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Measurements of ψ(2S) and X(3872) → J/ψ π+π- production in pp collisions at √s = 8 TeV with the ATLAS detector
… production of the hidden-charm states X(3872) and ψ(2S), in the decay mode J/ψπ+π −, measured using 11.4 fb−1 of pp collisions at √ s = 8 TeV by the ATLAS detector at the LHC. The ratio of cross sections X(3872)/ψ(2S) is also given, separately for prompt and non-prompt components, as well …
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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
… of the dipion mass spectrum in the decay X(3872) [right arrow] J/ [psi] [pi]⁺ [pi]⁻ using a 360 pb-1 sample of pp collisions at av [square root]s = 1.96 TeV collected with the CDF II detector at the Fermnilab Tevatron Collider. As a benchmark, we also extract the dipion mass distribution for …
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All Dressed Up And Ready To Go: A Tale Of Two Quarks.
… to modern particle physics. States like X(3872), Yb(10890), Zb(10610), and Zb(10650) have proven difficult to reconcile with the conventional quark model. However, analysis of diquark constituent masses has pointed towards tetraquark configurations being responsible for many of these exotic …