Test of QED to fourth order by study of four-lepton final states in e(+)e(−) interactions at 29 GeV with the HRS detector

This is the publisher's version, also available electronically from http://journals.aps.org/prd/abstract/10.1103/PhysRevD.42.2180.Data taken with the High Resolution Spectrometer detector at the SLAC storage ring PEP were used to test QED to fourth order in the coupling constant α. The experiment studied four-lepton final states produced at high Q(2) in e(+)e(−) interactions at s√=29 GeV. All four final-state particles were detected at large angles with respect to the beam axis. We observed 17 e(+)e(−)e(+)e(−), 24 e(+)e(−)μ(+)μ(−), and 1 μ(+)μ(−)μ(+)μ(−) events with pair masses greater than 1 GeV/c(2) for an integrated luminosity of 291 pb(−1). The complete α(4) QED calculation agrees reasonably well with the data

P-wave charmed mesons in e(+)e(−) annihilation

This is the publisher's version, also available electronically from http://journals.aps.org/prd/abstract/10.1103/PhysRevD.41.774

Production cross section and topological decay branching fractions of the τ lepton

This is the publisher's version, also available electronically from http://journals.aps.org/prd/abstract/10.1103/PhysRevD.40.902.We report new measurements of the production cross section for the reaction e(+)e(−)→τ(+)τ(−) at s√=29 GeV, as well as the topological decay branching fractions of the τ lepton. The data were taken with the High Resolution Spectrometer at the SLAC e(+)e(−) colliding-beam facility PEP. The measured cross section yields Rττ=1.044±0.014±0.030 [where the first (second) error is statistical (systematic)], consistent with QED and corresponding to QED cutoff parameters of Λ+>129 GeV and Λ−>284 GeV at the 95% C.L. The fractions of τ decays into one and three charged particles are B1=0.864±0.003±0.003 and B3=0.135±0.003±0.003

Study of π(+)π(−) transitions from the Υ(3S) and a search for the hb

This is the publisher's version, also available electronically from http://journals.aps.org/prd/abstract/10.1103/PhysRevD.43.1448

Measurement of the cross section for γγ→pp¯

This is the publisher's version, also available electronically from http://journals.aps.org/prd/abstract/10.1103/PhysRevD.50.5484.A measurement of the cross section for γγ→pp¯ is performed at two-photon center-of-mass energies between 2.00 and 3.25 GeV. These results are obtained using e(+)e-→e(+)e-pp¯ events selected from 1.31 fb(-1) of data taken with the CLEO II detector. The measured cross section is in reasonable agreement with previous measurements and is in excellent agreement with recent calculations based on a diquark model. However, leading order QCD calculations performed using the Brodsky-Lepage formalism are well below the measured cross section

Search for the production of fractionally charged particles in e(+)e(−) annihilations at s√=10.5 GeV

This is the publisher's version, also available electronically from http://journals.aps.org/prd/abstract/10.1103/PhysRevD.40.263

Search for φ mesons in τ lepton decay

This is the publisher's version, also available electronically from http://journals.aps.org/prd/abstract/10.1103/PhysRevD.55.R1119

Limit on τ decay to seven charged particles

This is the publisher's version, also available electronically from http://journals.aps.org/prd/abstract/10.1103/PhysRevD.35.2269

Measurement of the τ-lepton mass

This is the publisher's version, also available electronically from http://journals.aps.org/prd/abstract/10.1103/PhysRevD.47.R3671

Measurement of the Topological Branching Fractions of the τ Lepton

This is the publisher's version, also available electronically from http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.55.570We report new and precise measurements of the decay branching fractions of the τ lepton to one and three charged particles. The data, corresponding to an integrated luminosity of 176 pb(−1), were collected by the high resolution spectrometer HRS at the e(+)e(−) storage ring PEP at SLAC operated at s√=29 GeV. The fractions of τ decays into one and three charged particles are 0.869±0.002±0.003 and 0.130±0.002±0.003, respectively