Cabibbo suppressed decays and the ${\Xi }_c^{+}$ lifetime

Abstract

The problem of the ${\Xi }_c^{+}$ lifetime is considered in the framework of {\em Heavy-Quark Expansion} and $SU(3{)}_{flavor}$ symmetry. The lifetime of ${\Xi }_c^{+}$ is expressed in terms of measurable inclusive quantities of the other two charmed baryons belonging to the same $SU(3{)}_{flavor}$ multiplet in a model-independent way. In such a treatment, inclusive decay rates of singly Cabibbo suppressed decay modes have a prominent role. An analogous approach is applied to the multiplet of charmed mesons yielding interesting predictions on $D_s^{+}$ properties. The results obtained indicate that a more precise measurement of inclusive decay quantities of some charmed hadrons (such as ${\Lambda }_c^{+}$) that are more amenable to experiment can contribute significantly to our understanding of decay properties of other charmed hadrons (such as ${\Xi }_c^{+}$) where discrepancies or ambiguities exist.

9 pages, revtex4; certain improvements in text as suggested by the referee, acknowledgement changed; version to appear in Phys. Rev. D

References in corpus (4)

• A Vademecum on Quark-Hadron Duality
• A New Measurement of the Cascade(c)+ Lifetime
• On the $D^0$ -- $D_s$ lifetime difference and $\tau \to 7\pi +{\nu }_{\tau }$ decays
• Measurement of the Xi^+_c Lifetime

Cited by in corpus (6)

• Estimates of W-exchange contributions to ${\Xi }_{cc}$ decays
• Phenomenological Study of Heavy Hadron Lifetimes
• Axial-Vector Emitting Weak Nonleptonic Deacys of ${\Omega }_c^0$ Baryon
• Measurements of ${\Xi }_c^{+}$ Branching Ratios
• Cabibbo-suppressed decays of the Omega_c^0 - feedback to the Xi_c^+ lifetime
• Measurement of branching fractions of ${\Lambda }_c^{+}$ decays to ${\Sigma }^{+}{K}^{+}{K}^{-}$, ${\Sigma }^{+}\varphi$ and ${\Sigma }^{+}{K}^{+}{\pi }^{-}({\pi }^0)$