[en] The status and prospects of current and future kaon physics experiments is discussed. Both precision measurements and the search for and measurement of ultra-rare decays are powerful probes of many models of new physics beyond the Standard Model. The physics reach of these experiments is briefly discussed.

[en] A data sample corresponding to an integrated luminosity of 300 pb^-1 of e⁺e^- annihilations at 29 GeV was used to measure the inclusive branching fraction tau^- → K/sub S/⁰X^-nu/sub tau/. The experiment was performed using the High Resolution Spectrometer at the PEP storage ring. The measured branching fraction is (0.64 +- 0.15)%. The data are consistent with all K/sub S/⁰ coming from the Cabibbo-suppressed decay tau → K*^-(890)nu/sub tau/ leading to a branching ratio of (1.9 +- 0.28 +- 0.25)% for this channel. The inclusive sample was used to set 90% CL limits on the branching fractions of tau^- → rho^-(1600)nu/sub tau/ and tau^- → K*^-(1430)nu/sub tau/ of 8.5%, and 0.3% respectively. 18 refs., 3 figs

[en] The prospects and techniques of future ultra-rare kaon decay experiments will be reviewed in this series of slides. These experiments are enabled by the very high intensity hadron beam facilities at Brookhaven National Lab, Fermilab, and KEK/JHF. Particular attention will be paid to precision measurement of the K → π ν ν-bar process at these facilities. (author)

[en] In this series of slides the author presents recent results at KTeV concerning charge asymmetry in kaon decays. The KTeV measurements of φ_+-, φ₀₀ and δ_L have tightened limits on CPT violation in K_L → 2π and K_L → πeν_e decays. For K_L → 2π results show that φ_+- = (43.5 ± 0.5) degrees, φ₀₀ = (43.2 ± 1.0) degrees and δ_L = (3307 ± 63) ppm. As for K_L → πeν_e, 298 million decays were collected in the 1997 run, the analysis show that δ_L = (3322 ± 58 (stat) ± 47 (syst)) ppm which is in an excellent agreement with all previous measurements. No evidence of sidereal time dependence in φ_+- has been found contrary to what was expected from the model proposed by V.A Kostelecky, the time dependence of δ_L within this model is currently being studied

[en] The status and prospects of current and future kaon physics experiments is discussed. Both precision measurements and the search for and measurement of ultra-rare decays are powerful probes of many models of new physics beyond the Standard Model. The physics reach of these experiments will be briefly discussed.

[en] During the period October 1988 through December 1988, a search was made for very high energy gamma rays from the direction of the Crab nebula using the atmospheric Cerenkov technique. The detector consisted of seven-fold arrays of photomultiplier tubes at the focii of two 11-meter diameter solar concentrators situated in Albuquerque, New Mexico. A DC signal was detected from the Crab nebula with a statistical significance of 5.8 σ after the application of various cuts designed to suppress the background of hadronic showers. A search for a pulsed component failed to identify a significant signal in phase with the radio pulse from the Crab pulsar. These results with a threshold energy of 200 GeV are in substantial agreement with high energy results recently reported by the Mt. Hopkins group. 16 refs., 3 figs., 3 tabs

[en] In this paper, the first beam test results of a variety of prototype detector systems whose performance will be critical to the success of the KTeV program is reported. Specifically, the following results are discussed : (1) a fully active regenerator, (2) transition radiation detectors (TRD), (3) CsI calorimeter resolution studies, (4) CsI radiation hardness studies, (5) neutral beam calorimetry. (J.P.N.)

[en] Project X is a multi-megawatt proton facility being developed to support intensity frontier research in elementary particle physics, with possible applications to nuclear physics and nuclear energy research, at Fermilab. A Functional Requirements Specification has been developed in order to establish performance criteria for the Project X complex in support of these multiple missions. This paper will describe the Functional Requirements for the Project X facility and the rationale for these requirements.

[en] The high precision measurement of the ultra-rare K⁺→π⁺νν-bar decay at Fermilab would be one of the most incisive probes of quark flavor physics this decade. The dramatic physics reach of a precision measurement of K⁺→π⁺νν-bar is due to three factors. 1) The Standard Model prediction for the K⁺→π⁺νν-bar and K_L⁰→π⁰νν-bar branching fractions are broadly recognized as theoretically robust to the 2-4% level. No other loop-dominated quark process can be predicted with this level of certainty. 2) The K⁺→π⁺νν-bar branching fraction is highly suppressed in the Standard Model to the level of less than 1 part in 10 billion. This suppression allows physics beyond the Standard Model to contribute noticeably to the branching fraction with enhancements of up to factors of 5 above the Standard Model level. 3) The certainty with which the Standard Model contribution to K⁺→π⁺νν-bar is known permits a 5σ discovery potential for new physics even for enhancements of the branching fraction as small as 20%. This sensitivity is unique in quark flavor physics and probes essentially all models of new physics that couple to quarks within the reach of the LHC. Further, precision measurement of K⁺→π⁺νν-bar is sensitive to many models of new physics far beyond the direct mass reach of the LHC. The experimental challenge of measuring K⁺→π⁺νν-bar at the 1 in 10-billion Standard Model rate has been met successfully. Several events of the K⁺→π⁺νν-bar process have been clearly observed at BNL. Operating the Tevatron after Run-II as a 120 GeV high-duty factor synchrotron 'Stretcher' offers the opportunity to reach more than two orders of magnitude greater sensitivity yielding a 1000-event experiment based on incremental improvements to the techniques refined and firmly demonstrated at BNL. The Fermilab Stretcher would be a unique facility that would provide ideal properties for such rare-decay experiments, allowing the demonstrated performance of the AGS experiment to be extrapolated with confidence to an experiment driven by the Fermilab Stretcher.

[en] The modern trigger and data acquisition systems that instrument discovery experiments at the Large Hadron Collider (LHC) at CERN are very complex digital systems that select, reduce, and process enormous volumes of data in real-time to match the resources of state-of-the-art distributed computing available to researchers. Never before in particle physics have such powerful digital reconstruction and filtering systems been matched to a world-wide distributed system of computing of unprecedented scale. The goal of these massive aggregate computing systems is to extract as much physical information as possible from collision events at the LHC with well understood selection criteria and biases. Current strategies and future challenges in providing these aggregate real-time and offline computing systems are described.