[PDF] Top 20 The light meson spectroscopy program

... Much of the experimental interest in the light meson spectrum is focused on configurations outside the naive quark model, i.e. glueballs (valence gluons only), multi-quark systems and hybrids (valence ... See full document

... Isoscalar meson spectrum labeled by J PC ...The light-strange content of each state ð cos 2 ; sin 2 Þ is given by the fraction of (black, green) and the mixing angle for identified pairs is also ... See full document

... Framework Program under grant agreement ...PAID program (Y.L.); and by the Visiting Scholars Program of the Universities Research Association ... See full document

... of spectroscopy calculations described ...and light quarks have found the lightest exotic meson in the associated spectrum is a candidate hybrid and is nearly degenerate with three states in the ... See full document

... The light meson group was established in ...of light meson decays using data obtained with the CLAS ...the program, the g11 and g12 ...of meson decays the LMD group plans to ... See full document

... The spectroscopy of exotic mesons program performed at the CMS experiment includes the measure- ment of X(3872) production via decays to J/ψπ + π − ... See full document

... The talk is based on the collaboration with Miguel Albaladejo, Pedro Fernández-Soler, Feng- Kun Guo, Christoph Hanhart, Ulf-G. Meißner, Juan Nieves, and De-Liang Yao. This work is partially supported by the National ... See full document

... Here τ represents the five phase space coordinates that com- pletely describe the three-body kinematics. They are mea- sured for each event and are used to calculate the decay amplitudes ψ i which are constructed using ... See full document

... a light constituent, are very interesting objects for the understanding of the strong interaction, since they combine the aspect of the heavy quark as a static colour source on one side and the aspect of chiral ... See full document

... Abstract. The GlueX experiment[1] is scheduled to begin taking data in 2015. The goal is to discover evidence for the existence of exotic hybrid mesons and to map out their spectrum in the light quark sector. ... See full document

... Figure 1: The charm-light (D) meson spectrum up to around 3.8 GeV labelled by J P . The green boxes are our calculated masses while the black boxes correspond to experimental masses of neutral ... See full document

... compatible with the perturbative treatment. Among the non central parts of the potential, the hyperfine terms of III has 12 additional strength and size parameters  ’s and  ’s ( in Eqns. 18-20) respectively. We note ... See full document

... by meson spectroscopy. Meson, being made by a quark and an anti- quark, is the simplest quark bound system and therefore the ideal benchmark to study the interaction between quarks and understand ... See full document

... The GlueX Experiment is a 4π full acceptance spectrom- eter which will be completely dedicated to meson spec- troscopy studies with a real photon beam. The photon beam will be produced by a dedicated facility ... See full document

... We present results of an exploratory study of singlet scalar states in unquenched QCD using both glueball and meson operators. Results for non-singlet non-strange scalar mesons are also presented. We use Asqtad ... See full document

... with respect to the reference amplitude (2 ++ E 1), is constrained to be real. Above the K K ¯ threshold, two distinct sets of solutions are apparent in most bins as expected. These results may be combined with those of ... See full document

... The spectroscopy of light mesons is performed with negative (mostly π − ) and positive (p, π + ) hadron beams with a momentum of 190 ...The light-meson spectrum is measured in different final ... See full document

... and spin are important benchmarks in understanding quantum chromodynamics (QCD) of light quarks and gluons. The COMPASS collaboration uses pion beams produced by the CERN Super Proton Synchrotron in order to ... See full document

... the light pseudoscalar mesons, and they appear as poles in the pertinent scattering ...such meson-meson interactions is di ff erent from that in quark models, see, ...and light-meson ... See full document

... The light-front quantization [Dir49; Ste80] has been applied successfully in the context of current algebra [Wei66; JS68] and the parton model [Bjo69; Dre69] in the ...renormalization program [PB85; BP91; ... See full document