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Dive into the research topics where R. Fabrizio is active.

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Featured researches published by R. Fabrizio.


Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1984

The Mark III spectrometer

D. Bernstein; J. Bernstein; K. O. Bunnell; G. Burgueno; R. E. Cassell; B. Collins; D.H. Coward; K. F. Einsweiler; R.L. Eisele; B. Haber; D. Hutchinson; G. Mazaheri; E. McNerney; L. Moss; R. F. Mozley; A. Odian; J. Roehrig; K. Skarpaas; B. Sukiennicki; W. Toki; Y. Unno; F. Villa; W. Wadley; N. Wermes; D. Wisinski; R. M. Baltrusaitis; G. Belyansky; D. Coffman; R. Cooper; W. Freidler

Abstract This paper describes the design, construction and performance of the Mark III, a new general purpose large solid angle spectrometer at SPEAR, the SLAC 2–8 GeV e+e− storage ring. The detector has been designed for the study of exclusive final states in e+e− annihilation, which requires large solid angle coverage combined with charged particle momentum resolution, particle identification, and photon detection efficiency at low energies.


Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1984

The endcap shower counters for the MARK III detector

R. Fabrizio; F. Grancagnolo; R. P. Hamilton; C. A. Heusch; W. Nilsson; J. Perrier; H. Sadrozinski; T. Schalk; A. Seiden

Abstract We describe below the design, construction and performance of the end cap shower counters of the MARK III detector. These counters, made up of layers of aluminum proportional tubes sandwiched between lead sheets, achieve a position resolution for electrons or photons of about 7 mm × 9 mm using charge division for the position measurement along the wire direction. The energy resolution for fully contained electron and photon showers is σ E E = 17% √E . The counters are segmented into twelve individual readouts in depth, allowing the very good pattern recognition needed for the separation of nearby showers. The total depth of the counter, twelve radiation lengths, is adequate for the SPEAR energy range. Good photon detection efficiency extends to energies below 100 MeV.


Physical Review Letters | 1985

A direct measurement of charmed D+ and D0 semileptonic branching ratios

R. M. Baltrusaitis; D.H. Coward; D. E. Dorfan; J. C. Sleeman; W. J. Wisniewski; R. E. Cassell; D. Wisinski; K. O. Bunnell; C. Del Papa; Robert F. Mozley; K. Einsweiler; C. A. Heusch; A. J. Weinstein; H. J. Willutzki; A. Odian; R. P. Hamilton; B. Tripsas; R. H. Schindler; J. D. Richman; R. Fabrizio; J. Perrier; S. A. Plaetzer; D. M. Coffman; L. Köpke; J. Roehrig; F. Villa; P. Mockett; M. Scarlatella; A. Nappi; G. Blaylock


Physical Review Letters | 1986

Observation of a narrow KK-bar state in J/ psi radiative decays.

R. M. Baltrusaitis; J. J. Becker; G. Blaylock; T. A. Bolton; J. S. Brown; K. O. Bunnell; T. H. Burnett; R. E. Cassell; D. M. Coffman; Cook; D.H. Coward; H. Cui; S. Dado; Del Papa C; D. E. Dorfan; G. P. Dubois; A. L. Duncan; G. Eigen; K. Einsweiler; B. I. Eisenstein; R. Fabrizio; D. Favart; G. E. Gladding; F. Grancagnolo; A. D. Guy; R. P. Hamilton; J. Hauser; C. A. Heusch; D. G. Hitlin; L. Köpke


Physical Review Letters | 1986

Direct Measurements of Charmed d Meson Hadronic Branching Fractions

R. M. Baltrusaitis; J. J. Becker; G. Blaylock; J. S. Brown; K. O. Bunnell; T. H. Burnett; R. E. Cassell; D. M. Coffman; V. Cook; D.H. Coward; S. Dado; D. E. Dorfan; G. P. Dubois; A. L. Duncan; K. Einsweiler; B. I. Eisenstein; R. Fabrizio; G. E. Gladding; F. Grancagnolo; R. P. Hamilton; J. Hauser; C. A. Heusch; D. G. Hitlin; L. Köpke; W. S. Lockman; U. Mallik; P. Mockett; R. F. Mozley; A. Nappi; A. Odian


Physical Review Letters | 1985

Measurements of Cabibbo Suppressed Hadronic Decays of Charmed D+ and D0 Mesons

R. M. Baltrusaitis; J. J. Becker; G. Blaylock; J. S. Brown; K. O. Bunnell; T. H. Burnett; R. E. Cassell; D. M. Coffman; Cook; D.H. Coward; S. Dado; D. E. Dorfan; G. P. Dubois; A. L. Duncan; K. Einsweiler; B. I. Eisenstein; R. Fabrizio; G. E. Gladding; R. P. Hamilton; J. Hauser; C. A. Heusch; D. G. Hitlin; L. Köpke; W. S. Lockman; U. Mallik; P. Mockett; R. F. Mozley; A. Nappi; A. Odian; R. Partridge


Physical Review D | 1985

J/ psi decays into a vector and a pseudoscalar meson and the quark content of the eta and eta '

R. M. Baltrusaitis; D. Coffman; J. Hauser; D. G. Hitlin; J. D. Richman; J. J. Russell; R. H. Schindler; D. E. Dorfan; R. Fabrizio; F. Grancagnolo; R. P. Hamilton; C. A. Heusch; L. Köpke; R. Partridge; J. Perrier; H. Sadrozinski; M. Scarlatella; T. Schalk; A. Seiden; J. J. Becker; G. T. Blaylock; J. S. Brown; H. Cui; B. I. Eisenstein; G. E. Gladding; S. A. Plaetzer; A. L. Spadafora; J. J. Thaler; A. Wattenberg; W. J. Wisniewski


Physical Review D | 1986

Study of the radiative decay J/ psi --> gamma rho rho.

R. M. Baltrusaitis; D. M. Coffman; J. Hauser; D. G. Hitlin; J. D. Richman; J. J. Russell; R. H. Schindler; D. E. Dorfan; R. Fabrizio; F. Grancagnolo; R. P. Hamilton; C. A. Heusch; L. Köpke; R. Partridge; J. Perrier; H. Sadrozinski; M. Scarlatella; T. Schalk; A. Seiden; J. J. Becker; G. Blaylock; J. S. Brown; H. Cui; B. I. Eisenstein; G. E. Gladding; S. A. Plaetzer; A. L. Spadafora; J. J. Thaler; A. Wattenberg; W. J. Wisniewski


Physical Review Letters | 1985

tau leptonic branching ratios and a search for Goldstone-boson decay.

R. M. Baltrusaitis; J. J. Becker; G. Blaylock; J. S. Brown; K. O. Bunnell; T. H. Burnett; R. E. Cassell; D. M. Coffman; V. Cook; D.H. Coward; S. Dado; D. E. Dorfan; G. P. Dubois; A. L. Duncan; K. Einsweiler; B. I. Eisenstein; R. Fabrizio; G. E. Gladding; F. Grancagnolo; R. P. Hamilton; J. Hauser; C. A. Heusch; D. G. Hitlin; L. Köpke; W. S. Lockman; U. Mallik; P. Mockett; R. F. Mozley; A. Nappi; A. Odian


Physical Review Letters | 1985

Observation of

R. M. Baltrusaitis; J. J. Becker; G. Blaylock; J. S. Brown; K. O. Bunnell; T. H. Burnett; R. E. Cassell; D. M. Coffman; Cook; D.H. Coward; H. Cui; Del Papa C; D. E. Dorfan; A. L. Duncan; K. Einsweiler; B. I. Eisenstein; R. Fabrizio; G. E. Gladding; F. Grancagnolo; R. P. Hamilton; J. Hauser; C. A. Heusch; D. G. Hitlin; L. Köpke; P. Mockett; L. Moss; R. F. Mozley; A. Nappi; A. Odian; R. Partridge

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D. E. Dorfan

University of California

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R. P. Hamilton

University of California

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J. Hauser

University of California

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F. Grancagnolo

Istituto Nazionale di Fisica Nucleare

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C. A. Heusch

University of California

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G. Blaylock

University of Massachusetts Amherst

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K. Einsweiler

Lawrence Berkeley National Laboratory

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