Conveners
Session 2
- Ritoban Basu Thakur (Fermilab/ UIUC)
Daisuke Yamato
31/05/2011, 11:00
Energy Frontier
We are searching the Higgs boson associated with a vector boson by using like-sign dilepton events. In these events, the most dominant backgrounds are fake events. As collecting the data, we found that the nominal W veto causes some bias in the fake ratios. Also, pT only background predictions are not sufficient because fakes depend on other variables and result in poor predictions.
In this...
Michele de Gruttola
31/05/2011, 11:20
Energy Frontier
A summary of electroweak results from the CMS Collaboration is given. The inclusive cross sections have been measured to better than 2% with a 4% luminosity uncertainty. The rate of jet production in association with W and Z bosons has been extensively studied and includes a test of Berends-Giele scaling. The W polarization in unpolarized pp collisions has been observed. Measurements of the W...
Scott Wilbur
31/05/2011, 11:40
Energy Frontier
We present a search for anomalous production of events containing a W or Z boson and additional leptons. The search uses data corresponding to $5.1$ $\mathrm{fb}^{-1}$ of integrated luminosity from $p\bar{p}$ collisions at a center-of-mass energy of $\sqrt{s}=1.96$ TeV. We find no indications of non-standard-model phenomena. Limits are set for a dark-matter inspired model of supersymmetric...
Jorge Martinez Ortega
31/05/2011, 12:20
Energy Frontier
The Heavy Quark Expansion theory predicts that the ratio among the B^0 and B_s lifetime to be very close to 1. The B^0 lifetime has been measured with a precision around 1%, so having a precision measurement of Bs lifetime can be a test of this framework. I will describe a method to measure the Bs lifetime using the semileptonic channel $B^{0}_s\rightarrow D^{+}_s\mu X$ with data collected by...