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Using data recorded by the CLEO II detector at CESR, we have searched for thedecay B -> Ds1+(2536) X, where Ds1+ is the narrow P-wave D_s^+ meson withJ^P=1^+. The upper limit to the inclusive branching fraction is measured to beBr(B -> Ds1+ X) < 0.95% at the 90% confidence level. This limit is smallcompared with the total expected B -> Dbar(*)D(*)KX rate. Assumingfactorization, the Ds1+ decay constant is constrained to be f_Ds1 < 114 MeV atthe 90% confidence level, which is at least 2.5 times smaller than that of Ds+.

physical review. d. particles, fields, gravitation, and cosmology/physical review. d. particles and fields

Search for the decay<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mrow><mml:mover><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mo>→</mml:mo></mml:mrow></mml:mover></mml:mrow></mml:mrow><mml:mrow><mml:msubsup><mml:mrow><mml:mi>D</mml:mi></mml:mrow><mml:mrow><mml:mi>s</mml:mi><mml:mn>1</mml:mn><mml:mn /></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msubsup></mml:mrow><mml:mn /><mml:mo>(</mml:mo><mml:mn>2536</mml:mn><mml:mo>)</mml:mo><…

Search for the decayB→Ds1+(2536)<…