Constraints on atmospheric charmed-meson production from IceCube

Charmed Meson Scattering from Lattice QCD

K−χc0 decay from charmed meson rescattering

We study the process B− → Kχc0 considering intermediate charmed meson rescattering effects. For this decay mode the naive factorization ansatz would predict a vanishing amplitude. We estimate contributions from the D(∗) s D (∗) → Kχc0 rescattering amplitudes, and compare the result with recent experimental measurements. We find that rescattering effects are able to produce a large branching rat...

Charmed Meson and Onium Production at the Tevatron

We report recent results of D meson, J== and production at the Fermilab Tevatron. We observe about 8000 D mesons reconstructed in the decay chain of D ! D 0 ; D 0 ! K+X. We measure the integrated D + production cross section to be 34765(stat:)58(sys:) nb for the rapidity range j(D +)j < 1:0 and the transverse momentum range pT (D +) > 10 GeV/c. The measurement is slightly higher than the theore...

Charmed Meson Production in a Free Quark Model

Production of charmed mesons D and D* in e+eannihilation is analyzed. Experimental tests are proposed for the extraction of form factor information from the cross section ratios. (Submitted for publication. ) i *Work supported in part by the Energy Research and Development Administration. TWork supported in part by Associated Western Universities, Inc. under a contract from the Energy Research ...

Preliminary Results on Charmed Meson Spectroscopy

We present preliminary results from the FOCUS experiment (E831 at Fermilab) on the spectroscopy of bound states of a charm quark and a light quark with orbital angular momentum L = 1, called D∗ 2(cū, cd̄). A theoretical framework for the spectrum of heavy-light mesons is given by Heavy Quark Symmetry (HQS), which predicts both narrow and broad states. While the narrow states are well established...