Apr 22 – 26, 2013
Marseille, Parc Chanot
Europe/Monaco timezone

New Heavy-flavor results from D0

Apr 23, 2013, 4:30 PM
20m
Morgiou (Palais des Congrès)

Morgiou

Palais des Congrès

Talk in Parallel Session at DIS2013 Heavy Flavours WG5: Heavy Flavours

Speaker

Dr Iain Bertram (Lancaster University)

Description

We present new and recent heavy-flavor results from the D0 Experiment, using the full ~10 fb-1 sample of ppbar collisions collected at sqrt(s) = 1.96 TeV, at the Tevatron collider. The semileptonic mixing asymmetries in B^0 (a^d_sl) and B_s^0 (a^s_sl) decays are extracted independently, with data-driven methods used to correct for reconstruction asymmetries. Both adsl and assl are found to be consistent with the standard model predictions. The measurement of a^d_sl is more precise than the previous world average, while the a^s_sl result is competitive with the world's best measurement. Using a similar technique, we perform a measurement of the direct CP violation parameter in B^+ -> J/psi K^+ decays, obtaining the most precise result to date. We also report the final update of the search for the rare decay B_s^0 -> mumu, using innovative methods to improve the separation of signal and background data candidates. We observe three events in the signal M(mumu) region, consistent with the expectations from background events, and set an observed (expected) limit at the 95% C.L. of 15 x 10^-9 (22 x 10^-9).

Primary author

Dr Iain Bertram (Lancaster University)

Co-authors

Presentation materials