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Using a sample of 9.7 million B meson pairs collected with the CLEO detector,we study B decays to the chi_c1 and chi_c2 charmonia states, which arereconstructed via their radiative decays to J/psi. We first measure thebranching fraction for inclusive chi_c1 production in B decays to beBr(B->chi_c1 X)=(4.14+-0.31+-0.40)*10^-3, where the first uncertainty isstatistical and the second one is systematic. We derive the branching fractionsfor direct chi_c1 and chi_c2 production in B decays by subtracting the knowncontribution of the decay chain B->psi(2S)X with psi(2S)->chi_c1,2 gamma. Weobtain Br[B->chi_c1(direct) X]=(3.83+-0.31+-0.40)*10^-3. No statisticallysignificant signal for chi_c2 production is observed in either case. Using theFeldman-Cousins approach, we determine the 95% confidence intervals to be [0.2,2.0]*10^-3 for Br(B->chi_c2 X), [0.0,1.7]*10^-3 for Br[B->chi_c2(direct) X],and [0.00,0.44] for the ratio Br[B->chi_c2(direct) X]/Br[B->chi_c1(direct) X].We also measure the branching ratio Br[B->chi_c2(direct)X_s]/Br[B->chi_c1(direct) X_s] for different X_s configurations byreconstructing B decays into exclusive final states with J/psi, a photon, akaon, and up to four pions. For all the X_s configurations we observe a strongchi_c1 signal yet no statistically significant chi_c2 signal. We discuss howour results compare with theoretical predictions in different models ofcharmonium production.

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

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