Magnetic Moment of the ${\Lambda }_c$, ${\Xi }_{c1}^{+}$ and ${\Xi }_{c1}^0$

Abstract

The magnetic moment of the ${\Lambda }_c$, ${\Xi }_{c1}^{+}$ and ${\Xi }_{c1}^0$ 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 $1/m_c$, the same order as the contribution from the heavy charm quark. We compute the leading long-distance contribution to the magnetic moments from the spin-symmetry breaking ${\Sigma }_c^{\ast }-{\Sigma }_c$ mass splitting in chiral perturbation theory. These are nonanalytic in the pion mass and arise from calculable one-loop graphs. Further, the difference between the magnetic moments of the charged charmed baryons is independent of the charm quark mass and of the subleading local counterterm.

10 pages, 1 uuencoded figure included, uses harvmac and epsf, CMU-HEP 94-06

References in corpus (7)

• Radiative $D^{\ast }$ Decay Using Heavy Quark and Chiral Symmetry
• Chiral perturbation theory for hadrons containing a heavy quark: the sequel
• Electromagnetic Interactions in Heavy Hadron Chiral Theory
• Light Quark Spin-Flavor Symmetry for Baryons Containing a Heavy Quark in Large N QCD
• Properties of Baryons Containing a Heavy Quark in the Skyrme Model
• Isospin splitting in heavy baryons and mesons
• Corrections from Low Momentum Physics to Heavy Quark Symmetry Relations for $B\to De{\bar{\nu }}_e$ and $B\to D^{\ast }e{\bar{\nu }}_e$ Decay

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• The magnetic moments of 'Lambda_b' and 'Lambda_c' baryons in light cone QCD sum rules
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