$M(B^*_c)-M(B_c)$ Splitting from Nonrelativistic Renormalization Group

Details $M(B^*_c)-M(B_c)$ Splitting from Nonrelativistic Renormalization Group $M(B^*_c)-M(B_c)$ Splitting from Nonrelativistic Renormalization Group

2004-03-08

arxiv.org/abs/hep-ph/0403080v4

Phys.Lett.B593:124-134,2004; Erratum-ibid.677:343,2009; Erratum-ibid.683:358,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

Appendix corrected, numerical results slightly changed

Scientific paper

10.1016/j.physletb.2004.04.066 1

We compute the hyperfine splitting in a heavy quarkonium composed of
different flavors in next-to-leading logarithmic approximation using the
nonrelativistic renormalization group. We predict the mass difference of the
vector and pseudoscalar charm-bottom mesons to be $M(B^*_c)-M(B_c)=50 \pm 17
{(\rm th)} {}^{+15}_{-12} (\delta\alpha_s)$ MeV.

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