Hyperfine Mass Splittings of Baryons Containing a Heavy Quark in Large N QCD
نویسنده
چکیده
The hyperfine mass splittings of baryons containing a heavy quark are derived at leading order in large N QCD. Hyperfine splittings either preserve or violate heavy quark spin symmetry. Previous work proves that the splittings which preserve heavy quark spin symmetry are proportional to J at order 1/N , where J is the angular momentum of the light degrees of freedom of the baryon. This work proves that the splittings which violate heavy quark spin symmetry are proportional to J · SQ at order 1/(NmQ) in the 1/N and 1/mQ expansions. UCSD/PTH 93-20 hep-ph/9307245 July 1993
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