Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5495419 | Physics Letters B | 2017 | 6 Pages |
Abstract
We report the first measurement of the absolute branching fraction for Îc+âÎμ+νμ. This measurement is based on a sample of e+eâ annihilation data produced at a center-of-mass energy s=4.6 GeV, collected with the BESIII detector at the BEPCII storage rings. The sample corresponds to an integrated luminosity of 567 pbâ1. The branching fraction is determined to be B(Îc+âÎμ+νμ)=(3.49±0.46(stat)±0.27(syst))%. In addition, we calculate the ratio B(Îc+âÎμ+νμ)/B(Îc+âÎe+νe) to be 0.96±0.16(stat)±0.04(syst).
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