The 2009 Europhysics Conference on High Energy Physics

Study of $B^+ \to \rho^+ \omega$ decay at Belle We report the results of a search for the charmless decay $B^+ \to \rho^+ \omega$. The analysis is based on a large data sample recorded at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. Study of inclusive $B \to X_s \eta$ at Belle We report results on a search for inclusive high...

Observation of $B^+ \to \bar{K}{}^{*0}(892)K^+$ at Belle We present a measurement of the branching fraction for the process $B^+ \to \bar{K}{}^{*0}(892)(\to K^-\pi^+)K^+$ based on a data sample of $657 \times 10^6$ $\Upsilon(4S) \to B\bar{B}$ events collected with the Belle detector at the KEKB $e^+e^-$ asymmetric-energy collider. A measurement of the charge asymmetry of $A_{CP}$ for this...

We present recent results from the BABAR experiment on three-body charmless hadronic B decays. The results include searches for the decay of charged B mesons to the final state KSKSpi+ and for neutral B mesons to pi0KSKS, etaKSKS and eta'KSKS. We also present a Dalitz-plot analysis of charged B decays to the final state pi+pi+pi-. All analyses use a sample of approximately 465 million...

Dalitz plot analysis of three-body hadronic final states in B decays should be performed in a unitary approach. A first step towards this goal will be to enforce two-body unitarity. Here we apply this concept to the K pi channel for the B --> K pi pi decays by using a unitary coupled channel model to describe the kaon-pion interactions. The weak decay amplitudes, derived in QCD...

We discuss the decay of B_c mesons into two light (pseudoscalar and vector) mesons. All these decay channels come from a single type of diagram, namely tree annihilation which allows us to derive simple relations among these processes. The size of annihilation contributions is an important issue in B physics, and we provide two different estimates in the case of non-leptonic charmless B_c...

We present recent CDF results on the properties of hadrons containing heavy quarks. These include a new measurement of the Bc production rate and updated measurement of B-hadron lifetimes.

Study of $B \to D_s^* h$ decays We report a measurement of the branching fractions for $B^0 \to D_s^* h$ decays using a large sample of $B\bar{B}$ decays collected with the Belle detector at the KEKB asymmetric energy $e^+e^-$ collider. Improved measurements of $B \to D_s K$ and $B \to D_s\pi$ branching fractions We report improved measurements of the $B\to D_s K$ and $B\to D_s\pi$...

First, we report a study of ten Cabibbo-favored B decays to final states of the form B0bar,B- --> D(*) p pbar n pi, n=0,1,2. We measure the branching fractions and present their kinematic distributions using a data sample of 455 million B Bbar pairs collected with the BaBar detector at the PEP-II asymmetric-energy B Factory at SLAC. Second, we report the Dalitz plot analysis of B- --> D+ pi-...

Study of $B^+ \to p \bar{\Lambda} \pi^+ \pi^-$ at Belle We study charmless $B^+$ decays to $p \bar{\Lambda} \pi^+ \pi^-$ final state using a 605 fb$^{-1}$ data sample collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric energy $e^+ e^-$ collider. There are significant signals found with $p \bar{\Lambda}$ mass peaking near threshold. The branching...

Presenter will be chousen

We report the first observation of the doubly strange b baryon Omega-_b in the decay channel Omega-_b to J/psi Omega-, with J/psi to mu+ mu- and Omega- to Lambda K- to (p pi-)K- in ppbar collisions at sqrt{s} = 1.96 TeV. Using approximately 1.3 fb-1 of data collected with the D0 detector at the Fermilab Tevatron Collider, we observe a signal with 5.4 sigma.