Andriy Badin
(Wayne State University)
28/07/2009, 14:00
Heavy Flavor Physics [bottom, charm, tau]
We present a calculation of 1/m2b corrections to the lifetime differences
of Bs mesons in the heavy-quark expansion. We find that they are small
to significantly affect \Delta\GammaB_s and present the result
for lifetime difference including non-perturbative 1/mb and 1/m2b
corrections. We also analyze the generic B = 1 New Physics contributions
to the lifetime difference of Bs mesons and...
Dr
Ignacio Redondo
28/07/2009, 14:24
CP-violation
The first measurement of CP violation phase beta_s in Bs -> J/psi phi
decays in 2007 generated considerable interest. The interest was caused by
the small deviation from the SM. While not sufficiently significant,
together with other measurements it is suggestive of a possible new physics
contribution. In the subsequent update using 2.8 fb-1 of data collected by
CDF II detector...
Benedetto di Ruzza
(CDF Collaboration)
28/07/2009, 14:48
CP-violation
An interesting decay mode of the Bs meson is into a phi pair: this is a
vector-vector decay dominated by b->sss penguin transition which is a
sensitive probe for possible new physics effects. The only existing sample
of this mode was reconstructed by the CDF experiment from 0.2 fb-1 of data,
and consisted of only 8 signal events. Here we present new results based
on a clean sample of...
Dr
Jin Li
(University of Hawaii)
28/07/2009, 15:12
Heavy Flavor Physics [bottom, charm, tau]
We report recent results on $B_s$ decays, including measurements of
$J/\psi \eta(')$ and several other modes. The results are based on large data sample collected at the $\Upsilon(5S)$ resonance with the Belle detector at the KEKB asymmetric $e^+e^-$ collider.
David Atwood
(Iowa State University)
28/07/2009, 16:30
CP-violation
B factories which are run at the Upsilon 5s peak can produce Bs pairs in an entangled state. This system therefore provides methods to measure CP violation and mixing in the Bs meson that are not available if Bs mesons are produced in hadronic collisions. I will discuss efficient strategies for using entangled Bs pairs to learn about the mixing of the Bs meson.
Sung Woo Youn
(Northwestern U./Fermilab)
28/07/2009, 16:54
CP-violation
We search for the semi-inclusive process Bs to Ds(*)Ds(*) using
2.8 fb-1 of ppbar collisions at sqrt{s}=1.96 TeV recorded by the D0
detector operating at the Fermilab Tevatron Collider. We observe 26.6 pm 8.4
signal events with a significance above background of 3.2 standard
deviations yielding a branching ratio of 0.035 pm 0.010 (stat) pm 0.011(syst).
Under certain theoretical...
Nagesh Kulkarni
(Wayne State University)
28/07/2009, 17:18
CP-violation
The CDFII detector at the Fermilab Tevatron has now collected more than 5
fb-1 of data, and using an impact parameter trigger has has collected the
largest existing samples of D*+ -> D0pi+ , where D0 decays as D0-> h+h-
(with h = K or pi). We present updated measurements of decay rates in
these channels, which allow precise measurements of CP violation and flavor
mixing in the charm sector.
Prof.
Michael Sokoloff
(University of Cincinnati)
28/07/2009, 17:42
CP-violation
We present evidence of $D^0$-$\bar{D^0}$ mixing using a time-dependent amplitude analysis of the decay
$D^0\rightarrow K^+ \pi^- \pi^0$ in a data sample of 384 fb$^{-1}$ collected with the $B\!a\!B\!a\!r$ detector at the PEP-II
$e^+e^-$ collider at SLAC. Assuming $C\!P$ conservation, we measure the mixing parameters $x'_{K\pi\pi^0} = $[$2.61
\mbox{}^{\rm +0.57}_{\rm -0.68}$\,(stat.)$\pm...
Dr
Adam LINCOLN
(Wayne State University)
28/07/2009, 18:06
Heavy Flavor Physics [bottom, charm, tau]
The decays of D0 and D0bar mesons produced from e+ e- annihilation at the psi(3770) resonance reflect quantum correlations, so that decay rates are sensitive to interference between indistinguishable final states. Using the CLEO-c detector at the Cornell Electron Storage Ring, we measure the time-independent decay rates of D0 decays to K- pi+, K+ pi-, several CP eigenstates, and...