The BaBar experiment is running at the asymmetric energy e+e- collider of the Stanford Linear Accelerator center. The goal of the BaBar experiment is to test the Standard Model mechanism of CP-violation with B meson decays and to search for new physics. In the Standard Model, the origin of CP-violation lies in the charged weak interaction sector, which involves transitions between quarks of different flavor and charge through the emission of a virtual W. The coupling strengths of these transitions for the 3 generations of quarks form a 3x3 matrix which is known as the CKM matrix. Unitarity of the CKM matrix imposes 9 complex relations between the matrix elements, the most relevant of which is called the unitarity triangle. The 3 angles of this triangle - alpha, beta, and gamma - can be extracted from CP-violating effects in B meson decays. I will present recent results for these 3 angles obtained through interference effects, for example beta via CP-violation in the interference between the B mixing and direct B decay amplitude. New this year are measurements of alpha and gamma as well as the observation of direct CP-violation in B decays. I will show preliminary results of a search for CP-violation in mixing and the current status of penta-quark searches.

Boston University

Within the Standard Model, the precise measurement of the top quark mass, together with an improved measurement of the W boson mass, serves as an important tool in constraining the mass of the yet to be observed Higgs Boson. We present a measurement of the top quark mass using data collected experiment at Fermilab. The Fermilab Tevatron collides protons and antiprotons at a center of mass energy of 1.96 TeV. This measurement utilizes approximately 240 pb$-1$ of data. In this talk we will focus on the measurement of the top quark mass using the lepton+jets final state topology of the top quark pair decay. This analysis makes use of kinematic fitting of the final state objects to reconstruct the top quark mass. We present the results of two analyses using different methods to identify top quark candidate events: one utilizing the unique topology of the ttbar final state, the other exploiting the identification of the long lived bottom quarks from the top quark decay.

Brookhaven

College of William and Mary

The G-Zero experiment at Jefferson Lab in Hall C is an ambitious experimental program to extract the proton's electric and magnetic strange quark distributions over 0.1 < Q^{2} < 0.8 (GeV/c)^2. This information is obtained by measuring electroweak parity-violating asymmetries, from polarized electrons scattering from protons. These expected asymmetries range from -3 to -40 parts-per-million with a required statistical precision of 5%. This experimental program required the construction of a dedicated spectrometer, cryo-target, custom electronics, new analysis software, as well as development of a new time structure for the Jefferson Lab electron beam with stringent helicity-correlated properties. The installation of this experiment was completed in October 2002 followed by the first engineering run. This talk will present the results of the commissioning studies of the new apparatus and the beam structure obtained during the first engineering run.

Kyungpook National University, Korea

We present the results of a search for anomalous production of diphoton events with large missing transverse energy using the Collider Detector at Fermilab. In 202 pb^-1 of ppbar collisions at sqrt(s)=1.96 TeV we observe no candidate events, with an expected standard model background of 0.27+-0.07(stat)+-0.10(syst) events. The results exclude a lightest chargino of mass less than 167 GeV/c^2, and lightest neutralino of 93 GeV/c^2 at 95% C.L. in a gauge-mediated supersymmetry-breaking model with a light gravitino.