Speaker
Mr
Roger Jones
(Lancaster)
Description
ATLAS has a wide programme to study the production cross
section and decay properties of particles with beauty, as
well as charmonium and bottomonium states. This presentation
will cover ATLAS results in the domain of charmonium production,
including J/psi, psi(2s) and chi_c states, B+ production, and
updates on the D(*) meson cross-section analysis. The analyses
discussed include double-differential production cross-section
measurements of the J/psi, psi(2S) and P-wave charmonium states
chi_cJ, extending upon previous measurements in precision and
kinematic reach. Prompt and non-prompt modes are distinguished,
as well as J/Psi vs Psi(2s) and the contribution to J/Psi production
from chi_c feed-down. Alongside the latter analysis, a competitive
measurement of the branching fraction B+/- -> chi_c1 + K+/- was also
performed. Results of these measurements are compared with the latest
theoretical predictions from a variety of theoretical approaches.
Primary author
Mr
Roger Jones
(Lancaster)
