arXiv subjects

Brian T. Meadows

Publications and source records attributed to Brian T. Meadows.

3 recordsLinked to original sources

arXiv2002

Some Developments in Light Quark Spectroscopy

Among the many unresolved questions in light quark spectroscopy, the underlying structure of the scalar mesons and the identification of states with a gluonic content rank high. Recently, new information has come from $ϕ$ radiative decays, $J/ψ$, $τ$, $D$ and $D_s$ meson decays. Other papers in this conference review radiative transitions of $ϕ$ and $J/ψ$. This paper discusses new information on the scalar sector primarily that from decays of $D$ and $D_s$ mesons.

hep-ex↗

arXiv2002

Light Mesons from Charm Meson Decays in FNAL E791

An analysis of the Dalitz plots for the decays $D^+\to K^-π^+π^+$ and $D^+\toπ^-π^+π^+$ indicates that structure with significant phase variation is required in the s-wave $K^-π^+$ and $π^-π^+$ systems in the region below 1 GeV/c$^2$ effective mass. A constant, non resonant "contact" term, together with a simple s-wave Breit Wigner amplitude with $M_{0}=797\pm 19\pm 43, Γ_{0}= 175\pm 12\pm 12$ MeV/c$^2$ for the $\Km\pip$ system and $M_{0}=478^{+24}_{-23}\pm 17, Γ_{0}=324^{+42}_{-40}\pm 21$ MeV/c$^2$ for the $π^-π^+$ system provide good fits to the data in this region.

hep-ex↗

arXiv2000

Experimental results on hadronic c decays

Recent results involving hadronic decays of charmed mesons and baryons are reviewed. Information relevant to decay mechanisms and to light quark scalar mesons is discussed.

hep-ex↗