Study of chic1 and chic2 meson production in B meson decays
Abstract
Using a sample of 9.7 million B meson pairs collected with the CLEO detector, we study inclusive B meson decays to the chic1 and chic2 charmonia states. We measure the branching fraction for the inclusive chic1 production in B decays to be Br(B->chic1 X)=(4.14+-0.31+-0.40)*10-3, where the first uncertainty is statistical and the second one is systematic. We obtain the branching fractions for direct chic1 and chic2 production in B decays by subtracting the contribution from the decay chain B->psi(2S)X with psi(2S)->chic1,2 gamma. We measure Br(B->chic1[direct] X)=(3.83+-0.31+-0.40)*10-3. No statistically significant signal for chic2 production is observed in either case. We determine the 95% C.L. upper limits to be Br(B->chic2 X)<2.0*10-3, Br(B->chic2[direct] X)<1.7*10-3, and Br(B->chic2[direct] X)/Br(B->chic1[direct] X)<0.44. All quoted results are preliminary.
Turn this paper into a full lesson
ArcXiv compiles a staged curriculum from this paper: 8-12 lessons across beginner → advanced, synthesised section guides, visuals, flashcards, a quiz, exercises, and on-demand deep dives per section. Grounded in the abstract, never invented.