The goal of the GlueX experiment is to provide critical data needed to address one of the outstanding and fundamental challenges in physics – the quantitative understanding of the confinement of quarks and gluons in quantum chromodynamics (QCD). Confinement is a unique property of QCD and understanding confinement requires an understanding of the soft gluonic field responsible for binding quark...

Since gluons in QCD are interacting fundamental constituents just as quarks are, we expect that in addition to mesons made from a quark and an antiquark, there should also be glueballs and hybrids (bound states of quarks, antiquarks and gluons). In general, these states would mix strongly with the conventional qq mesons. However, 1 Submitted to Physical Review D. they can also have exotic quant...

The production rates of primary vector and P -wave mesons in Z hadronic decays are analysed. The mass dependence of production rates for the bottom, charm, strange charm and three families of the light-flavour mesons is found to be very similar, allowing to relate the relative production rates for mesons with different flavours and, possibly, their masses. The strange axial mesons K1(1273) and ...

We study SU(3)L×SU(3)R chiral quark model of mesons up to the next to leading order of 1/Nc expansion. Composite vector and axial-vector mesons resonances are introduced via non-linear realization of chiral SU(3) and vector meson dominant. Effects of one-loop graphs of pseudoscalar, vector and axial-vector mesons is calculated systematically and the significant results are obtained. We also inv...

In the framework of SU (3) symmetry, we present a general analysis of B meson decays into two lighter uncharmed mesons (both pairs of pseudoscalar mesons and pairs of vector and pseudoscalar mesons). From the analysis we find constraints on γ and discuss their validity. The most useful new constraint is obtained by considering the decay modes B 0 → Kπ and B + → π 0 π +. In decays into pairs of ...

We review mixing and CP violation in D mesons, emphasizing the differences with the other pseudoscalar mesons in the Standard Model, and show that D mesons can be useful to look for physics beyond the Standard Model. Laboratoire associé au Centre National de la Recherche Scientifique URA D0063 In the study of the weak interactions of pseudoscalar mesons, there are a number of interesting proper...

We present results on the production of high transverse momentum charm mesons in collisions of 515 GeV/c negative pions with beryllium and copper targets. The experiment recorded a large sample of events containing high transverse momentum (pT ) showers detected in an electromagnetic calorimeter. From these data, a sample of charm mesons has been reconstructed via their decay into the fully cha...

We derive two model-independent sum rules relating the transition matrix elements for radiative and strong decays of excited heavy mesons to properties of the lowest-lying heavy mesons. The sum rule for the radiative decays is an analog of the Cabibbo-Radicati sum rule and expresses the sum of the radiative widths in terms of the isovector charge radius of the ground state heavy meson. Using mo...

We examine the mechanisms producing departures from ideal mixing for vector mesons within the context of the Hidden Local Symmetry (HLS) model. We show that kaon loop transitions between the ideal combinations of the ω and φ mesons necessitate a field transformation in order to get the mass eigenstates. It is shown that this transformation is close to a rotation for processes involving, like me...