Color-octet contribution and direct CP violation in B → ψ(ψ′)X
Journal
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Journal Volume
391
Journal Issue
3-4
Pages
456-460
Date Issued
1997
Author(s)
Abstract
We study cc̄ color-octet contribution to B → ψ(ψ′)X. When this contribution is included, the theoretical predictions for the branching ratios become in much better agreement with the experiment. This mechanism also enhances the partial rate asymmetries by about a factor of five. The inclusive ψ(ψ′) resulting from b → d + gluon can have asymmetry around a few percent whereas those from b → s + gluon has it around 4 × 10-4. The asymmetry in the former modes should be observable, to a significance of 3σ with about (1-10) × 108B mesons.
SDGs
Type
journal article