Beauty production with ALICE at the LHC

Jun 4, 2020, 12:30 PM
20m
https://cern.zoom.us/j/98296793721

https://cern.zoom.us/j/98296793721

Oral Presentation Heavy Flavor and Quarkonia Parallel

Speaker

Mengke Cai (Central China Normal University)

Description

In hadronic collisions, beauty quarks are produced in hard scattering processes with large momentum transfer. Their production provides a very important test of perturbative QCD calculations in pp collisions.
In heavy-ion collisions, the measurement of beauty hadron production is a unique tool to investigate the properties of the Quark-Gluon Plasma. In particular, beauty quarks, being four times heavier than charm quarks, can be utilized to study the in-medium mass dependent energy loss. In addition, measurements in p-Pb collisions are crucial to investigate the effects of cold nuclear matter on their production.

With the ALICE detector, beauty quarks are studied by measuring electrons and non-prompt D mesons coming from beauty hadron decays at mid-rapidity. Finally, a more direct access to the initial parton kinematics is obtained by measuring beauty-tagged jets. They can provide further constraints for energy loss models adding information on how the radiated energy is dissipated.

In this contribution, the latest measurements of beauty production using beauty-decay electrons, non-prompt D-mesons and beauty-tagged jets in pp collisions at $\sqrt{s}$ = 5.02 TeV, and their comparison to pQCD calculations will be presented. New measurements of beauty-tagged jet production down to low $p_{\rm T}$ in p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV will be discussed. The latest results on the centrality dependence of $R_{\rm AA}$ of beauty-decay electrons and non-prompt D mesons in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV compared to different theoretical models will be presented.

Contribution type Contributed Talk
Track Heavy Flavor and Quarkonia
Collaboration (if applicable) ALICE

Primary author

Presentation materials