TY - GEN
T1 - Measuring semileptonic asymmetries in LHCb
AU - Klaver, S.
PY - 2014
Y1 - 2014
N2 - TheCP-violating flavour-specific asymmetry in neutral b mesons provides a method for testing the Standard Model. The measurements from the D0 experiment yield values of this asymmetry that disagree with the Standard Model at a level of 3.6 s. This contribution discusses the latest LHCb measurements in this sector both from B0 mesons (ad sl) and B0s mesons (as sl). Using their 2011 dataset, corresponding to an integrated luminosity of 1.0 fb1 obtained in 2011, LHCb measured a value of as sl = (0:06-0:50stat -0:36syst)%. Combining the 2011 and 2012 datasets, with an integrated luminosity of 3 fb1, LHCb measured ad sl = (0:02-0:19stat-0:30syst)%. These are the most precise measurements of the parameters as sl and ad sl to date. Plans for an updated result for as sl using the full 3 fb1 dataset are discussed. This will include new methods to determine detection asymmetries which are the dominating systematic uncertainty of the 2011 measurement.
AB - TheCP-violating flavour-specific asymmetry in neutral b mesons provides a method for testing the Standard Model. The measurements from the D0 experiment yield values of this asymmetry that disagree with the Standard Model at a level of 3.6 s. This contribution discusses the latest LHCb measurements in this sector both from B0 mesons (ad sl) and B0s mesons (as sl). Using their 2011 dataset, corresponding to an integrated luminosity of 1.0 fb1 obtained in 2011, LHCb measured a value of as sl = (0:06-0:50stat -0:36syst)%. Combining the 2011 and 2012 datasets, with an integrated luminosity of 3 fb1, LHCb measured ad sl = (0:02-0:19stat-0:30syst)%. These are the most precise measurements of the parameters as sl and ad sl to date. Plans for an updated result for as sl using the full 3 fb1 dataset are discussed. This will include new methods to determine detection asymmetries which are the dominating systematic uncertainty of the 2011 measurement.
M3 - Conference contribution
T3 - Proceedings of Science
BT - Flavorful Ways to New Physics, FWNP 2014
PB - Proceedings of Science (PoS)
T2 - Workshop on Flavorful Ways to New Physics, FWNP 2014
Y2 - 28 October 2014 through 31 October 2014
ER -