DPF 2009

Session

CP-violation I

27 Jul 2009, 14:00

Wayne State University

384. Interpreting new CP violating signals in B Decays

Alakabha Datta (University of Mississippi)

27/07/2009, 14:00

CP-violation

I will describe several CP violating signals in B decays like direct CP violation, mixing induced CP violation and Triple Product Asymmetry. I will discuss CP violating measurements involving b-> s transitions. I will particularly focus on measurements made on penguin decays like B-> phi K_s, B-> K pi and on B_s mixing.

139. Time-dependent $CP$ violation in radiative $B$ decays

Mr Himansu Sahoo (University of Hawaii)

27/07/2009, 14:30

CP-violation

We report measurements of time-dependent $CP$-violation parameters in radiative modes where a $B^0$ meson decays to $\phi K_S^0 \gamma$, $\omega K_S^0 \gamma$, $K_S^0 \rho^0 \gamma$ and $K_S^0 \pi^0 \gamma$ final states. These results are based on a large data sample collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB energy-asymmetric $e^+e^-$ collider and are...

325. A critical look at hadronic b \to s penguin modes

Rupak Dutta (University of Kentucky)

27/07/2009, 14:50

CP-violation

CKM mechanism of a single CP-violating phase has been confirmed by various $B$ decay data over the decade. Yet, the existence of new physics effects can not be ruled out. In this context, we consider the branching ratios and CP asymmetries in two theoretically clean modes, namely in $B\to f_0(980) K_S$ and $B \to \phi K_S$ decays, to the end of determining the deviation of time dependent...

8. Hints for the scale of new CP-violating physics from B-CP anomalies

Dr Enrico Lunghi (Indiana University)

27/07/2009, 15:10

CP-violation

We consider several hints for new physics involving CP-asymmetries in B-decays and interpret them in terms of generic contributions to effective Wilson coefficients. The effects we focus on are: the differences in the fitted value of sin(2 beta) versus the ones directly measured via the time dependent CP asymmetries in B -> J/psi K or via B -> (phi,eta') K; the difference between the direct CP...

26. HINTS FOR NEW PHYSICS IN B-CP ASYMMETRIES: MAY BE WE ARE EIGHT NOW?

Amarjit Soni (BNL)

27/07/2009, 15:30

CP-violation

“ B-CP anomalies, “4th” generation and the LHC Abstract Although the CKM-paradigm works approximately to O(20%), there are by now several indications that suggest the need for beyond the Standard Model CP-odd phase(s). The value of sin 2β measured via the goldplated (tree) mode, B → ψK s is smaller than the value deduced by using improved lattice matrix elements. The value of sin 2β...