The CLEO project , centered at Cornell University, is alarge-scale high energy physics project. The goals of the projectarise from an esoteric question---why is there apparently so littleantimatter in the universe?---and the computational problems thatarise in trying to answer this question are quite challenging. To answer this question, the CESR storage… (More)
This paper describes the design and implementation of a fault-tolerant CORBA naming service-CosNamingFT. Every CORBA object is accessed through its Interoperable Object Reference (IOR), which is registered with the CORBA name service. The name service therefore is a critical gateway to all objects in a distributed system; to avoid having a single point of… (More)
The goal of the Nile project is to develop an inexpensive, scalable, fault-tolerant, widely distributed job processing environment. On the systems side, Nile must manage and provide transparent access to hundreds of commodity processors spread across the United States, and a distributed database that will exceed 100 terabytes. These are scales not commonly… (More)
We present a new determination of f Ds using 5 million e + e ? ! cc events obtained with the CLEO II detector. Our value is derived from our new measured ratio ?(D + s ! +)=?(D + s ! +) = 0:173 0:021 0:031. Using B(D + s ! +) = (3:6 0:9)%, we extract f Ds = (280 17 25 34) MeV. We compare this result with various model calculations.
The Nile, Sequoia 2000, and EOSDIS projects are designing and building systems for wide-area, distributed computing. To a greater or lesser degree, they all make assumptions about the availability y and performance of high-speed (usually ATM) networks (e.g., high bandwidth, high reliability, and low latency). While these assumptions may be valid in the… (More)
We have measured the branching ratio for the inclusive radiative penguin process b ! ss. We nd where the rst error is statistical, the second error is the additive systematic error from uncertainty in yield, and the third error is the multiplicative systematic error from uncertainty in eeciency, which includes model dependence .
We search for the decay B ? ! ? in a sample of over 2 million charged B decays using the CLEO detector. We use the channel in which the tau decays leptonically, and combine this lepton with the missing energy and momentum in the event to form a B candidate. A t to the mass and energy distribution of these B candidates yields ?14 46 signal events. This value… (More)
We have used the CLEO-II detector at the Cornell Electron Storage Ring to study the inclusive production of charmonium mesons in a sample of 2.15 million BB events. We nd inclusive branching fractions of (1.130.040.06)% for B!J==X, (0.340.040.03)% for B! 0 X, and (0.400.060.04)% for B! c1 X. We also nd some evidence for the inclusive production of c2. An… (More)
We have fully reconstructed decays of both B 0 and B mesons into nal states containing either D, D , D , , 0 or c1 mesons. This allows us to obtain new results on many physics topics including branching ratios, tests of the factorization hypothesis, color suppression, resonant substructure, and the B B 0 mass diierence.