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Physics Letters B | 1988

Observation of D0 → K0K0☆

J. P. Cumalat; C. Shipbaugh; M. Binkley; F. Bossi; J. N. Butler; P. Coteus; M. DiCorato; M. Diesburg; J. Enagonio; J. Filaseta; P.L. Frabetti; I. Gaines; P. H. Garbincius; M. Gormley; J. Haggerty; D.J. Harding; T. Kroc; R. Ladbury; P. Lebrun; P. F. Manfredi; J. Peoples; A. Sala; J. Slaughter; J. Wiss

Abstract We have observed the decay mode D 0 → K S 0 K S 0 . The signal was isolated by detecting both K S 0 s decaying via K S 0 → π + π − , and by using the well-known D ∗+ → D 0 π + mass difference. We have measured the branching fraction of D 0 → K S 0 K S 0 relative to D 0 → K + K − and find the ratio Γ( D 0 → K 0 K 0 )/Γ( D 0 → K + K − ) to be 0.4 ± 0.3.


Nuclear Physics B (Proceedings Supplements) | 1988

Charm hadroproduction results from Fermilab E-400

P. Coteus; M. Binkley; F. Bossi; J. N. Butler; J. P. Cumalat; M. DiCorato; M. Diesburg; J. Enagonio; J. Filaseta; P.L. Frabetti; I. Gaines; P. H. Garbincius; M. Gormley; J. Haggerty; D.J. Harding; T. Kroc; R. Ladbury; P. Lebrun; P. F. Manfredi; J. Peoples; A. Sala; C. Shipbaugh; J. Slaughter; J. Wiss

Results are presented from Fermilab E-400 on the production of charmed baryons and mesons at a mean energy of 640 GeV. We show evidence for the charm-strange baryon, ..xi../sub c//sup +/, and present our measurements of its mass, width, lifetime, cross section and relative branching fractions, and the A, x/sub f/, p/sub t/, and particle/antiparticle dependence of the state. We show evidence for both the ..sigma../sub c//sup 2 +/ and ..sigma../sub c//sup 0/, and present measurements of three mass differences, ..sigma../sub c//sup 2 +/ - ..sigma../sub c//sup 0/, ..sigma../sub c//sup 0/ - ..lambda../sub c//sup +/, and ..sigma../sub c//sup 2 +/ - ..lambda../sub c//sup +/. Measurements of the A dependence and particle/antiparticle ratios for ..sigma../sub c/ production are also presented. We show preliminary results on the ratio of two decay modes of the D/sup 0/, D/sup 0/ ..-->.. K/sup +/K/sup -/ and D/sup 0/ ..-->.. K/sub 0/anti K/sub 0/. The latter mode has not been previously observed. 8 refs., 10 figs.


Physical Review Letters | 1987

Production of the charmed strange baryon Xi c+ by neutrons.

P. Coteus; M. Binkley; F. Bossi; J. N. Butler; J. P. Cumalat; M. DiCorato; M. Diesburg; J. Enagonio; J. Filaseta; P.L. Frabetti; I. Gaines; P. H. Garbincius; M. Gormley; J. S. Haggerty; D.J. Harding; T. Kroc; R. Ladbury; P. Lebrun; P. F. Manfredi; J. Peoples; A. Sala; C. Shipbaugh; J. Slaughter; J. Wiss


Physical Review Letters | 1979

Evidence for the High-Energy Photoproduction of Charmed Mesons

M. S. Atiya; S. D. Holmes; B. C. Knapp; W. Lee; W. Wisniewski; P. Avery; John C. Butler; G. E. Gladding; T. O'Halloran; J. J. Russell; A. Wattenberg; J. Wiss; M. Binkley; J. P. Cumalat; I. Gaines; M. Gormley; R. L. Loveless; J. Peoples


Physical Review Letters | 1979

High-energy photoproduction of ρ′(1600)

M. S. Atiya; S. D. Holmes; B. C. Knapp; W. Lee; R. Seto; W. Wisniewski; P. Avery; John C. Butler; G. E. Gladding; M. C. Goodman; T. O'Halloran; J. J. Russell; A. Wattenberg; J. Wiss; M. Binkley; J.P. Cumulat; I. Gaines; M. Gormley; R. L. Loveless; J. Peoples


Physical Review D | 1989

High-energy photoproduction of /pi//sup +//pi//sup /minus///pi//sup 0/, /ital K//sup +/K/sup /minus//, and /ital pp/bar // states

Jerome Busenitz; C. Olszewski; P. Callahan; G. E. Gladding; A. Wattenberg; M. Binkley; J. N. Butler; J. P. Cumalat; I. Gaines; M. Gormley


Physical Review Letters | 1980

High-energy photoproduction of the D*+

P. Avery; J. Wiss; John C. Butler; G. E. Gladding; M. C. Goodman; T. O'Halloran; J. J. Russell; A. Wattenberg; M. Binkley; J. P. Cumalat; I. Gaines; M. Gormley; R. L. Loveless; J. Peoples; M. S. Atiya; S. D. Holmes; B. C. Knapp; W. Lee; W. Wisniewski


Physical Review Letters | 1976

Dimuon production in the rho, J, and continuum regions

M. Binkley; I. Gaines; J. Peoples; B. Knapp; W. M. Lee; P. Leung; S. D. Smith; A. Wijangco; J. Knauer; J. Bronstein; R. Coleman; G. Gladding; M. Goodman; M. Gormley; R. Messner; T. O'Halloran; J. Sarracino; A. Wattenberg


Physical Review Letters | 1979

High-energy photoproduction of rho' (1600)

Atiya; Stephen D. Holmes; B. C. Knapp; Won-Yong Lee; R. Seto; W. J. Wisniewski; P. Avery; John C. Butler; G. E. Gladding; M. C. Goodman; T. O'Halloran; J.J. Russell; A. Wattenberg; J. Wiss; M. Binkley; J.P. Cumulat; I. Gaines; M. Gormley; R. L. Loveless; J. Peoples


Physical Review Letters | 1988

Production of the Ds+/- by high-energy neutrons.

C. Shipbaugh; J. Wiss; M. Binkley; J. N. Butler; J. P. Cumalat; P. Coteus; M. DiCorato; M. Diesburg; J. Enagonio; J. Filaseta; P.L. Frabetti; I. Gaines; P. H. Garbincius; M. Gormley; D.J. Harding; T. Kroc; R. Ladbury; P. Lebrun; P. F. Manfredi; J. Peoples; A. Sala; J. Slaughter

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P. Coteus

University of Colorado Boulder

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