David E. Yount | Researchain

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Physics Letters | 1966

Positron momentum spectrum and branching ratio of K+e3

R. Cester; P.T. Eschstruth; Gerard K. O'Neill; B. Quassiati; David E. Yount; J.M. Dobbs; A.K. Mann; W.K. McFarlane; D.H. White

Abstract The momentum spectrum of positrons from K + →π o +e + + v was measured. The observed spectrum, containing 1679 events, is consistent with vector coupling with upper limits of 18 and 4 percent of scalar and tensor admixtures, respectively. The K + e3 branching ratio was measured to be 0.0498 ± 0.002.

Nuclear Instruments and Methods | 1967

A threshold gas Cherenkov counter with large solid angle

J. Macg. Dobbs; W.K. Mc Farlane; David E. Yount

Abstract A threshold gas Cherenkov counter to be used with a spark chamber momentum spectrometer is described. The angular acceptance of the counter is 60° × 13° at the entrance window of the counter, which is 30 cm × 20 cm. A uniform efficiency of 97% is obtained with sulfur hexafluoride at 7.45 bar (90 psi absolute), for 150 MeV/ c electrons.

Physical Review | 1967

Measurement of the Branching Ratios of K μ 2 + , K π 2 + , K e 3 + , and K μ 3 +

L. B. Auerbach; J. Macg. Dobbs; A.K. Mann; W. K. McFarlane; D. H. White; R. Cester; P. T. Eschstruth; Gerard K. O'Neill; David E. Yount

Physical Review D | 1974

Measurement of the branching ratios of K+ (mu2), K+ (pi2), K+ (e3), and K+ (mu3)

L. B. Auerbach; David E. Yount; J. Macg. Dobbs; W. K. McFarlane; P. T. Eschstruth; Donald H. White; R. Cester; A.K. Mann; Gerard K. O'Neill

Physical Review D | 1974