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Featured researches published by F. M. Pierre.


Physics Letters B | 1976

Properties of anomalous eμ events produced in e+e− annihilation☆☆☆

M. Perl; G.J. Feldman; G. S. Abrams; M. S. Alam; A. M. Boyarski; M. Breidenbach; F. Bulos; W. Chinowsky; J. Dorfan; C. E. Friedberg; G. Goldhaber; G. Hanson; F. B. Heile; J. A. Jaros; J. A. Kadyk; R. R. Larsen; A. M. Litke; D. Lüke; B. A. Lulu; V. Luth; R.J. Madaras; C. C. Morehouse; H. K. Nguyen; J. M. Paterson; I. Peruzzi; M. Piccolo; F. M. Pierre; T. P. Pun; P. Rapidis; B. Richter

Abstract We present the properties of 105 events of the form e + + e − → e +- + μ ∓ + missing energy, in which no other charged particles or photons are detected. The simplesthypothesis compatible with all the data is that these events come from the production of a pair of heavy leptons, the mass of the lepton being in the range 1.6 to 2.0 GeV/ c 2


Physics Letters B | 1977

D and D meson production near 4 GeV in e+e− annihilation

G. Goldhaber; J. E. Wiss; G. S. Abrams; M. S. Alam; A. M. Boyarski; M. Breidenbach; W. Chinowsky; J. Dorfan; G.J. Feldman; G. Hanson; J. A. Jaros; A. D. Johnson; J. A. Kadyk; D. Lüke; V. Luth; H. L. Lynch; R.J. Madaras; H. K. Nguyen; J. M. Paterson; M. Perl; I. Peruzzi; M. Piccolo; F. M. Pierre; T. P. Pun; P. Rapidis; B. Richter; R. H. Schindler; R. F. Schwitters; J. Siegrist; W. Tanenbaum

Abstract We have studied momentum spectra for D0 ( D 0) and D± mesons produced near 4 GeV in e+e− annihilation and find that production is dominated by two-body reactions involving D and D∗ states where the D∗ (charged and neutral) have masses near 2.01 GeV/c2. A detailed study of D momentum spectra near Ecm = 4.028 GeV allows determination of masses and branching ratios of D and D∗ states. Lastly we find that events containing a D0 meson conserve strangeness, thus establishing upper limits on D0- D 0 mixing and on the effects of charm changing neutral currents.


Physics Letters B | 1977

K° production in e+e- annihilation

V. Luth; F. M. Pierre; G. S. Abrams; M. S. Alam; A. M. Boyarski; M. Breidenbach; W. Chinowsky; J. Dorfan; G.J. Feldman; G. Goldhaber; G. Hanson; J. A. Jaros; J. A. Kadyk; R. R. Larsen; A. M. Litke; D. Lüke; H. L. Lynch; R.J. Madaras; H. K. Nguyen; J. M. Paterson; M. Perl; I. Peruzzi; Ch. Peyrou; M. Piccolo; T. P. Pun; P. Rapidis; B. Richter; B. Sadoulet; R. H. Schindler; R.H. Schwitters

Abstract The production of enutral kaons in e + e − annihilation has been measured for c.m. energies between 3.4 GeV and 7.6 GeV. Near 4 GeV the inclusive K S cross section shows an increase and structure similar to total hadron production. Roughly 40–45% of all hadronic final states contain kaons, except at 4.028 GeV and 4.415 GeV, where a significantly larger kaon fraction is observed.


Physics Letters B | 1977

D meson production and decay in e+e− annihilation at 4.03 and 4 GeV c.m. energy☆

M. Piccolo; I. Peruzzi; V. Luth; H. K. Nguyen; J. E. Wiss; G. S. Abrams; M. S. Alam; A. M. Boyarski; M. Breidenbach; W.C. Carithers; W. Chinowsky; S. Cooper; J. Dorfan; G.J. Feldman; G. Goldhaber; G. Hanson; J. A. Jaros; A. D. Johnson; J. A. Kadyk; D. Lüke; H. L. Lynch; R.J. Madaras; C. C. Morehouse; J. M. Paterson; M. Perl; F. M. Pierre; T. P. Pun; P. Rapidis; B. Richter; R. H. Schindler

Abstract Decay modes of the charmed mesons, D 0 and D + , are studied in e + e − annihilation data at 4.03 and 4.41 GeV c.m. energy. The products of cross section times branching ratio are measured for the K − π + , K − π + π + π − , K S π + π − and K − π + π + final states. Upper limits are established for the Cabibbo forbidden decays via π + π − , K + K − , K + K − π + , K + π + π − and π + π − π + . The K − π + π + π − final state is shown to be dominated by K − π + ρ 0 .


Physical Review Letters | 1975

Evidence for Anomalous Lepton Production in e+ - e- Annihilation

Martin L. Perl; G. S. Abrams; A. M. Boyarski; M. Breidenbach; D. D. Briggs; F. Bulos; W. Chinowsky; J.T. Dakin; G.J. Feldman; C. E. Friedberg; D. Fryberger; G. Goldhaber; G. Hanson; F. B. Heile; B. Jean-Marie; J. A. Kadyk; R. R. Larsen; A. M. Litke; D. Lüke; B. A. Lulu; V. Luth; D. Lyon; C. C. Morehouse; J. M. Paterson; F. M. Pierre; T. P. Pun; P. Rapidis; B. Richter; B. Sadoulet; R. F. Schwitters


Physical Review Letters | 1975

Evidence for Jet Structure in Hadron Production by e+e- Annihilation

G. Hanson; G. S. Abrams; A. M. Boyarski; M. Breidenbach; F. Bulos; W. Chinowsky; G.J. Feldman; C. E. Friedberg; D. Fryberger; G. Goldhaber; D. L. Hartill; B. Jean-Marie; J. A. Kadyk; R. R. Larsen; A. M. Litke; D. Lüke; B. A. Lulu; V. Luth; H. L. Lynch; C. C. Morehouse; J. M. Paterson; M. Perl; F. M. Pierre; T. P. Pun; P. Rapidis; B. Richter; B. Sadoulet; R. F. Schwitters; W. Tanenbaum; G. H. Trilling


Physical Review Letters | 1976

Observation in e+e- annihilation of a narrow state at 1865 MeV/c2 decaying to Kπ and Kπππ

G. Goldhaber; F. M. Pierre; G. S. Abrams; M. S. Alam; A. M. Boyarski; M. Breidenbach; W.C. Carithers; W. Chinowsky; S. Cooper; R. DeVoe; J. Dorfan; G.J. Feldman; C. E. Friedberg; D. Fryberger; G. Hanson; J. A. Jaros; A. D. Johnson; J. A. Kadyk; R. R. Larsen; D. Lüke; V. Luth; H. L. Lynch; R.J. Madaras; C. C. Morehouse; H. K. Nguyen; J. M. Paterson; M. Perl; I. Peruzzi; M. Piccolo; T. P. Pun


Physical Review Letters | 1976

Observation of a narrow charged state at 1876 MeV/c2 Decaying to an exotic combination of Kππ

I. Peruzzi; M. Piccolo; G.J. Feldman; H. K. Nguyen; J. E. Wiss; G. S. Abrams; M. S. Alam; A. M. Boyarski; M. Breidenbach; W.C. Carithers; W. Chinowsky; R. DeVoe; J. Dorfan; G. E. Fischer; C. E. Friedberg; D. Fryberger; G. Goldhaber; G. Hanson; J. A. Jaros; A. D. Johnson; J. A. Kadyk; R. R. Larsen; D. Lüke; V. Luth; H. L. Lynch; R.J. Madaras; C. C. Morehouse; J. M. Paterson; M. Perl; F. M. Pierre


Physical Review Letters | 1976

Observation of a resonance at 4.4 GeV and additional structure near 4.1 GeV in

J. Siegrist; G. S. Abrams; A. M. Boyarski; M. Breidenbach; F. Bulos; W. Chinowsky; G.J. Feldman; C. E. Friedberg; D. Fryberger; G. Goldhaber; G. Hanson; D. L. Hartill; J. A. Jaros; B. Jean-Marie; J. A. Kadyk; R. R. Larsen; D. Lüke; V. Luth; H. L. Lynch; R.J. Madaras; C. C. Morehouse; H. K. Nguyen; J. M. Paterson; M. Perl; I. Peruzzi; F. M. Pierre; M. Piccolo; T. P. Pun; P. Rapidis; B. Richter


Physical Review Letters | 1977

e^+e^-

G.J. Feldman; F. Bulos; D. L̈ke; G. S. Abrams; M. S. Alam; A. M. Boyarski; M. Breidenbach; J. Dorfan; C. E. Friedberg; D. Fryberger; G. Goldhaber; G. Hanson; F. B. Heile; J. A. Jaros; J. A. Kadyk; R. R. Larsen; A. M. Litke; V. L̈th; R.J. Madaras; C. C. Morehouse; H. K. Nguyen; J. M. Paterson; M. Perl; I. Peruzzi; M. Piccolo; F. M. Pierre; T. P. Pun; P. Rapidis; B. Richter; B. Sadoulet

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G. Goldhaber

University of California

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G. S. Abrams

University of California

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J. A. Kadyk

University of California

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