H. A. Gordon | Researchain

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Featured researches published by H. A. Gordon.

Physical Review Letters | 1993

Determination of the branching ratio of the decay pi 0-->e+e-

A. Deshpande; C. Alliegro; Chaloupka; J. Egger; H. A. Gordon; N.J. Hadley; W. Herold; H. Kaspar; Aaron M. Lee; D. M. Lazarus; H.J. Lubatti; H. Ma; P. Rehak; A. Skukla; M. Zeller; T. Zhao

Employing the decay chain [ital K][sup +][r arrow][pi][sup +][pi][sup 0], [pi][sup 0][r arrow][ital e][sup +][ital e[minus]] we have observed the decay [pi][sup 0][r arrow][ital e][sup +][ital e[minus]]. With a signal sample of [approx]21 events we measure the branching ratio for [pi][sup 0][r arrow][ital e][sup +][ital e[minus]] to be (6.9[plus minus]2.3[plus minus]0.6)[times]10[sup [minus]8], normalized to the decay [ital K][sup +][r arrow][pi][sup +][pi][sup 0], [pi][sup 0][r arrow][ital e][sup +][ital e[minus]][gamma]. This result is consistent with the unitarity lower bound and the published 90% confidence level upper limit of 13[times]10[sup [minus]8].

Physical Review Letters | 1993

Determination of the branching ratio of the decay pi0 ---> e+ e-

A. Deshpande; H.J. Lubatti; Aaron M. Lee; N.J. Hadley; W. Herold; V. Chaloupka; C. Alliegro; P. Rehak; J. Egger; D. M. Lazarus; H. A. Gordon; A. Shukla; T. Zhao; H. Kaspar; H. Ma; M. Zeller

Physical Review Letters | 1993

Determination of the branching ratio of the decay [pi][sup 0][r arrow][ital e][sup +][ital e[minus]]

A. Deshpande; C. Alliegro; V. Chaloupka; J. Egger; H. A. Gordon; N.J. Hadley; W. Herold; H. Kaspar; Aaron M. Lee; D. M. Lazarus; H.J. Lubatti; H. Ma; P. Rehak; A. Skukla; M. Zeller; T. Zhao

Physical Review Letters | 1993

Determination of the branching ratio of the decayπ0→e+e−

A. Deshpande; C. Alliegro; V. Chaloupka; J. Egger; H. A. Gordon; N.J. Hadley; W. Herold; H. Kaspar; Aaron M. Lee; D. M. Lazarus; H.J. Lubatti; H. Ma; P. Rehak; A. Skukla; M. Zeller; T. Zhao

Physical Review Letters | 1992

Study of the decay K+--> pi +e+e-

C. Alliegro; H.J. Lubatti; P.S. Cooper; Aaron M. Lee; N.J. Hadley; W. Herold; C. Campagnari; V. Chaloupka; P. Rehak; J. Egger; D. M. Lazarus; H. A. Gordon; T. Zhao; H. Kaspar; M. Zeller

Physical Review Letters | 1990

Improved limit on the branching ratio of K+--> pi + micro+e-

Aaron M. Lee; C. Alliegro; C. Campagnari; Chaloupka; P.S. Cooper; J. Egger; H. A. Gordon; N.J. Hadley; W. Herold; Jagel Ea; H. Kaspar; D. M. Lazarus; H.J. Lubatti; P. Rehak; M. Zeller; T. Zhao

Physical Review Letters | 1992

Study of the decay K+ → π+e+e-

C. Alliegro; C. Campagnari; V. Chaloupka; P.S. Cooper; J. Egger; H. A. Gordon; N.J. Hadley; W. Herold; H. Kaspar; Aaron M. Lee; D. M. Lazarus; H.J. Lubatti; P. Rehak; M. Zeller; T. Zhao

Physical Review Letters | 1988

Erratum: Search for short-lived neutral particles emitted inK+decay [Phys. Rev. Lett. 59, 2832 (1987)]

N. J. Baker; H. A. Gordon; D. M. Lazarus; V. A. Polychronakos; P. Rehak; Tannenbaum Mj; J. Egger; W. Herold; H. Kasper; V. Chaloupka; Jagel Ea; H.J. Lubatti; C. Alliegro; C. Campagnari; P.S. Cooper; N.J. Hadley; Aaron M. Lee; M. Zeller

Physical Review Letters | 1993

Determination of the branching ratio of the decay π0→e+e-

A. Deshpande; C. Alliegro; V. Chaloupka; J. Egger; H. A. Gordon; N.J. Hadley; W. Herold; H. Kaspar; Aaron M. Lee; D. M. Lazarus; H.J. Lubatti; H. Ma; P. Rehak; A. Shukla; M. Zeller; T. Zhao

Physical Review Letters | 1992

Study of the decayK+→π+e+e−

C. Alliegro; C. Campagnari; V. Chaloupka; P.S. Cooper; J. Egger; H. A. Gordon; N.J. Hadley; W. Herold; H. Kaspar; Aaron M. Lee; D. M. Lazarus; H.J. Lubatti; P. Rehak; M. Zeller; T. Zhao

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