Conveners
CP-Violation
- Enrico Lunghi (Indiana University)
- Jim Olsen (Princeton University)
CP-Violation
- Enrico Lunghi (Indiana University)
- Jim Olsen (Princeton University)
CP-Violation
- Jim Olsen (Princeton University)
- Enrico Lunghi (Indiana University)
CP-Violation
- Enrico Lunghi (Indiana University)
- Jim Olsen (Princeton University)
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Jure Zupan (Unknown)8/9/11, 4:00 PMCP-ViolationParallel contributionI will review the present status of CP violating observables in low energy observables and the progress in their precision that can be expected for in the future. I will discuss what deviations from Standard Model can potentially teach us about new physics and also discuss recent hints of non-Standard Model CP violating sources in heavy quark transitions.Go to contribution page
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Bruce Hoeneisen (Universidad San Francisco de Quito)8/9/11, 4:40 PMCP-ViolationParallel contributionWe present an improved measurement of the charge asymmetry $A$ of like-sign dimuon events in 9 fb$^{-1}$ of $p\overline{p}$ collisions recorded with the D0 detector at a center-of-mass energy $\sqrt{s} = 1.96$ TeV at the Fermilab Tevatron collider. From $A$, we extract the like-sign dimuon charge asymmetry in semileptonic $b$-hadron decays. We also study the dependence of charge asymmetry...Go to contribution page
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Dr Sudhir Gupta (Iowa State University)8/9/11, 5:08 PMCP-ViolationParallel contributionIn this talk, I will discuss T-odd correlations induced by CP violating anomalous top-quark couplings at both production and decay level in the context of the Tevatron and the Large hadron collider. We will also show that by simply making use of four momenta of the top decay products it is possible to isolate such effects. With specific examples of top decay modes the experimental...Go to contribution page
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Amarjit Soni (BNL)8/10/11, 4:30 PMCP-ViolationParallel contributionThe role of lattice matrix elements in refined tests of the Standard Model and for search of new physics will be discussed. Although the results from the lattice in conjunction with data from B-factories provided a confirmation of the CKM-paradigm of CP violation a few years ago, since then improved calculations and better data from experiments is now yielding strong indications that the...Go to contribution page
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Giordano Cerizza (Department of Physics and Astronomy-College of Arts and Science)8/10/11, 4:54 PMCP-ViolationParallel contributionThe Bs meson is studied with the CMS detector at LHC. The time-dependent measurements of the Bs decay into J/Psi Phi and of the rate of the rare decay into mu mu potentially provide indirect constraints on physics beyond the Standard Model. This talk presents the first cross section measurement for Bs->J/Psi phi production based on data taken in 2010 and discusses prospects of the...Go to contribution page
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Daan Van Eijk (NIKHEF)8/10/11, 5:18 PMCP-ViolationParallel contributionThe determination of the mixing induced CP-violating asymmetry in decays such as $B^0_s \to J/\psi \phi$ is one of the key goals of the LHCb experiment. Its value is predicted to be very small in the Standard Model but can be significantly enhanced in many models of New Physics. The steps towards a precise determination of this phase with a flavour-tagged, time-dependent, angular...Go to contribution page
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Dr Avdhesh Chandra (Rice University)8/10/11, 5:42 PMCP-ViolationParallel contributionWe report a new measurement of the $CP$-violating phase $\phi_s$, of the decay width difference for the two mass eigenstates $\Delta \Gamma_s$, of the mean $B^0_s$ lifetime $\overline{\tau}_s$, and of magnitudes of the decay amplitudes, from the flavor-tagged decay $B^0_s\to J/\psi \phi$. For the first time, we consider possible contributions from the decay $B^0_s \rightarrow J/\psi K^+K^-$,...Go to contribution page
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Dr gil paz (The University of Chicago)8/10/11, 6:06 PMCP-ViolationParallel contributionThe CP asymmetry in inclusive b-> s gamma decays is an important probe of new physics. The theoretical prediction was thought to be of a perturbative origin. In the standard model the perturbative prediction for the asymmetry is about 0.5 percent. In a recent work with M. Benzke, S.J. Lee and M. Neubert , we have shown that the asymmetry is in fact dominated by non-perturbative effects. Since...Go to contribution page
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Paola Garosi8/11/11, 10:30 AMCP-ViolationParallel contributionWe report the first measurement of branching fractions and CP-violating asymmetries of doubly-Cabibbo suppressed B+ --> D0 K decays in hadron collisions, using the approach proposed by Atwood, Dunietz, and Soni (ADS) to determine the CKM angle gamma in 7.0 fb-1 of data. The ADS parameters are determined with accuracy comparable with B factory measurements.Go to contribution page
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Dr Romulus Godang (University of Mississippi)8/11/11, 10:54 AMCP-ViolationParallel contributionWe report on the study of the decay B+ ->D0(D0bar) K+ where the D0 or D0bar decaying to Kpipi0, with the Atwood Dunietz and Soni (ADS) method. We measure the ratios Rads, R+, and R- that, since the processes B+ -> D0barK+ and B+ -> D0K+ are proportional to Vcb and Vub, respectively, are sensitive to rB and to the weak phase gamma. We also report the results of CP violation studies of B->Dcp...Go to contribution page
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Himansu Sahoo (University of Hawaii)8/11/11, 11:18 AMCP-ViolationParallel contributionWe present the final measurement of time-dependent CP violation in the neutral B decays into charmonium and a K^0 meson with a large data sample containing 772 million B \bar{B} pairs collected at the Upsilon(4S) resonance with with the Belle detector at the KEKB asymmetric-energy e+e- collider. We also reports the first results on CP violation in the radiative penguin decay B^0->K_S phi...Go to contribution page
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Benjamin Carls8/11/11, 11:42 AMCP-ViolationParallel contributionWe present world-leading results on CP-violating asymmetries and branching fractions of several decay modes of B0, Bs , and Lambda_b hadrons into charmless two-body final states using 6/fb of data collected by the CDF experiment.Go to contribution page
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Joshua Berger (Cornell University)8/11/11, 12:06 PMCP-ViolationParallel contributionWe study a new type of CP violating observable that arises in three body decays. We consider decays that are dominated by an intermediate resonance that can go on shell. In many cases, the decay can occur via two different orderings. The required CP-even phase arises due to the different virtualities of the resonance in the two diagrams corresponding to these orderings. This method can be...Go to contribution page
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Leo Piilonen (Virginia Tech)8/12/11, 4:00 PMCP-ViolationParallel contributionWe present the first evidence for B->D K, D->K^+ pi^- and measurements of related observables used in the Atwood-Dunietz-Soni (ADS) method to determine the CKM parameter phi_3 (also known as gamma). Measurement of related B->D^* K^- modes are also reported. We report the first measurement of phi_3 using model-independent analysis of the Dalitz plot of B->D K, D->K_S^0 pi^+ pi^-. These...Go to contribution page
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Ryan White (University of South Carolina)8/12/11, 4:20 PMCP-ViolationParallel contributionWe report recent BABAR results of CP violation studies in D+->Ks0pi+, D+ ->Ks0 h+h+h- and tau -> Ks0pinu.Go to contribution page