Measurement of ratios of fragmentation fractions for bottom hadrons inpp¯collisions ats=1.96 TeV

Measurement of ratios of fragmentation fractions for bottom hadrons in p(p)over-bar collisions at root s=1.96 TeV

Ratios of bottom meson branching fractions involving J/ psi mesons and determination of b quark fragmentation fractions.

We report a measurement of the ratios of the decay rates of the B, B and B s mesons into exclusive final states containing a J/ψ meson. The final states were selected from 19.6 pb of pp̄ collisions recorded by the Collider Detector at Fermilab. These data are interpreted to determine the b quark fragmentation fractions fu, fd and fs. We also determine the branching fractions for the decay modes ...

Fragmentation and Spectroscopy of Hadrons in Ep Collisions

Recent results on charm fragmentation and hadron spectroscopy in e/ep collisions at HERA with the ZEUS and H1 detectors are presented. The measured fragmentation ratios and fragmentation fractions are in agreement with those measured in ee, thus supporting the assumption of universality. Measurements of the inclusive photoproduction of the neutral mesons η, ρ, f0(980) and f2(1270) are also pres...

Measurement of the Ratios of Branching Fractions

We present the measurement of the ratios of branching fractions B(B ° -+ D-r + ) to B(Bo -+ D--+), and B(B2 -+ OD-rr+rr ) to B(Bo -D-urx+r+-r-). We analyze data taken with the CDF II detector that corresponds to an integrated luminosity of 355 pb 1 in pp collisions at V = 1.96 TeV at the Fermilab Tevatron. Using a novel displaced track trigger we reconstruct 494 ± 28 B ° -+ D;-r+ decays, 8098 +...

Measurement of charm fragmentation ratios and fractions in photoproduction at HERA

The production of D, D, D, D s and Λ + c charm hadrons and their antiparticles in ep scattering at HERA was measured with the ZEUS detector using an integrated luminosity of 79 pb. The measurement has been performed in the photoproduction regime with the exchanged-photon virtuality Q < 1GeV and for photon-proton centre-of-mass energies in the range 130 < W < 300GeV. The charm hadrons were recon...