Study of high momentum eta' production in B -> eta' Xs
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 Upsilon(4S) 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)).10-4. We also obtain the Xs mass distribution and find that it tends to favor models predicting high masses.
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