55 research outputs found
Light-Front Approach for Pentaquark Strong Decays
Assuming the two diquark structure for the pentaquark state as advocated in
the Jaffe-Wilczek model, we study the strong decays of light and heavy
parity-even pentaquark states using the light-front quark model in conjunction
with the spectator approximation. The narrowness of the Theta width is ascribed
to the p-wave configuration of the diquark pair. Taking the Theta width as a
benchmark, we estimate the rates of the strong decays Xi_{3/2}-- to Xi- pi-,
Sigma- K-, Sigma_{5c}0 to D_s- p, D_{s0}*- p and Xi_{5c}0 to D_s- Sigma+,
D_{s0}^{*-} Sigma+ with Sigma_{5c} Xi_{5c} being antisextet charmed pentaquarks
and D_{s0}* a scalar strange charmed meson. The ratio of Gamma(P_c to Baryon
D_{s0}*)/Gamma(P_c to Baryon D_s) is very useful for verifying the parity of
the antisextet charmed pentaquark P_c. It is expected to be of order unity for
an even parity P_c and much less than one for an odd parity pentaquark.Comment: 24 pages, 2 figure
Building partnerships to address the HIV epidemic
Singapore Medical Journal495376-379SIMJ
The effects of current spreading in the semiconductor on the determination of contact resistance
Solid State Electronics3381110-1112SSEL
Optimization of cutting conditions for multi-pass turning operations using sequential quadratic programming
Journal of Materials Processing Tech.281-2253-262JMPT
Equipment design and control of advanced thermal-processing module in lithography
10.1109/TIE.2009.2026230IEEE Transactions on Industrial Electronics5731112-1119ITIE
A preliminary study on the dielectric constant of WPC based on some tropical woods
International Journal of Radiation Applications and Instrumentation. Part273207-21
Determination of optimal cutting conditions using design of experiments and optimization techniques
International Journal of Machine Tools and Manufacture332297-305IMTM
Seizures associated with ertapenem
10.1016/j.ijantimicag.2007.08.024International Journal of Antimicrobial Agents313290-IAAG
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