Abstract
We measure the branching fraction for the charmless semi-inclusive process B --> eta'Xs, where the eta' meson has a momentum in the range 2.0 to 2.7 GeV/c in the upsilon4S center-of-mass frame and Xs represents a system comprising a kaon and zero to four pions. We find B(B --> eta'Xs) = [3.9 +/- 0.8(stat) +/- 0.5(syst) +/- 0.8(model)] x 10(-4). We also obtain the Xs mass spectrum and find that it fits models predicting high masses.
Original language | English |
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Pages (from-to) | 061801 |
Number of pages | 1 |
Journal | Physical Review Letters |
Volume | 93 |
Issue number | 6 |
Early online date | 1 Aug 2004 |
DOIs | |
Publication status | Published - 1 Aug 2004 |