Leptonic decay of the Upsilon(1S) meson at third order in QCD

Abstract

We present the complete next-to-next-to-next-to-leading order short-distance and bound-state QCD correction to the leptonic decay rate Gamma(Upsilon(1S)->l+l-) of the lowest-lying spin-1 bottomonium state. The perturbative QCD prediction is compared to the measurement Gamma(Upsilon(1S)->e+e-)=1.340(18) keV.

4 pages, 2 figures

References in corpus (4)

• Heavy Quark Pair Production near Threshold with Potential Non-Relativistic QCD
• Ultrasoft contribution to quarkonium production and annihilation
• Three-loop matching of the vector current
• Renormalization Group Improved Bottom Mass from Upsilon Sum Rules at NNLL Order

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