The 1/Nc expansion of the heavy baryon Isgur-Wise functions is discussed.Because of the contracted SU(2Nf ) light quark spin-flavor symmetry, the universality relations among the Isgur-Wise functions of b ! #3;c and #6;(?) b ! #6;(?)c are valid up to the order of 1/N2 c . |
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[V1] | 2017-09-17 10:41:10 | chinaXiv:201711.00008V1 | Download |
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