Speaker
Tatjana Agatonovic-Jovin
(University of Belgrade (RS))
Description
The ATLAS detector at the LHC is collecting - among others - a large statistics of Lambda_b decays, allowing the study of production and decay properties of this b-flavored hadron. This statistics is what allowed one of the most precise measurements of the Lambda_b lifetime. We will review ATLAS' latest results on the decay properties of this baryon, including the measurement of the parity violating asymmetry parameter alpha_b in Lambda_b -> Lambda J/psi, obtained from the study of angular correlations in the p pi- mu+ mu- final state. The measurement is compared to predictions based on perturbative QCD and heavy quarks effective theory.
Primary author
Toni Baroncelli
(Roma Tre Universita Degli Studi (IT))
