A note on Ξ c (3055) + and Ξ c (3123) +

Magnetic Moment of the Λ c , Ξ + c 1 and Ξ 0 c 1

The magnetic moment of the Λc, Ξ + c1 and Ξ 0 c1 vanish when the charm quark mass is taken to infinity because the light degrees of freedom are in a spin zero configuration. The heavy quark spin-symmetry violating contribution from the light degrees of freedom starts at order 1/mc, the same order as the contribution from the heavy charm quark. We compute the leading long-distance contribution t...

a π + Ξ − CORRELATIONS AND THE Ξ ∗ (1530) PUZZLE.

Lepton Photon 543 Measurement of the Ξ + c Lifetime

The Ξc lifetime is measured using 9.0 fb −1 of ee annihilation data collected on and just below the Υ(4S) resonance with the CLEO II.V detector at CESR. The Ξc lifetime is measured using an unbinned maximum likelihood fit. The preliminary result for the Ξc lifetime is (503 ± 47(stat.)± 18(syst.)) fs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

Production of the pentaquark exotic baryon Ξ 5 in KN scattering : KN → K Ξ 5 and KN → K ∗ Ξ 5

Abstract We investigate the production of the newly found pentaquark exotic baryon Ξ5 in the KN → KΞ5 and KN → KΞ5 reactions at the tree level. We consider the both positiveand negativeparities of the Ξ5. The reactions are dominated by the sand u-channel processes, and it is observed that the resulting cross sections are very much dependent on the parity of Ξ5 and on the type of form factor. We...

Quantum Fluctuation Effects on Hyperfragment Formation from Ξ � Absorption at Rest on 12 C

Formation mechanisms of single, twin and double hypernuclei from Ξ− absorption at rest on C are investigated with a refined microscopic transport model that incorporates the recently developed quantal Langevin treatment into antisymmetrized molecular dynamics. With a choice of the fluctuation strength that describes dynamical fragmentation processes in the p + C reaction at 45 MeV quite well, t...