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Physics Letters B | 1994

Spin parity analysis of the

Jeong-Hun Lee; J. Dowd; P. Smith; J. Cummings; G. Mutchler; J. Clement; D. Son; A. Dzierba; H. Kirk; W. Kern; B.E. Bonner; D. Zieminska; Z. Bar-Yam; H. J. Willutzki; R.R. Crittenden; D. P. Weygand; S. U. Chung

Abstract We have carried out a study of the reaction π − p → ƒ 1 (1285) π − p at 18 GeV / c , with ƒ 1 (1285) → K + K 0 π − This reaction is almost entirely mediated by the natural-parity exchange, presumably ƒ 2 (1270) or ϱ exchange. We find evidence for two possible resonances - a JPC = 1++ state at 1.7 GeV / c2 and a broad JPC = 1−+ structure at 1.6–2.2 GeV/c2.


AIP Conf.Proc. | 1988

f_1(1285) \pi^-

S. U. Chung; J. Dowd; T. Marshall; S. D. Protopopescu; G. Mutchler; H. J. Willutzki; A. Dzierba; W. Kern; Richard C. Fernow; G.C. Phillips; Daria Zieminska; B.E. Bonner; Z. Bar-Yam; E. King; Harold G. Kirk; R.R. Crittenden; J.B. Roberts

This paper describes an experiment that will search for JPC hybrid mesons at the Brookhaven MPS‐II facility. Such explicitly exotic states are allowed in QCD, and are predicted to be in an accessible mass region by several models. The experiment will investigate the production of exotics in the reaction π−p→π−f1p. Expected rates and experimental sensitivity to possible hybrid states are discussed.


AIP Conf.Proc. | 1980

system in the reaction

S. U. Chung; S. J. Lindenbaum; A. C. Saulys; W. Kern; C. D. Wheeler; S. D. Protopopescu; U. Mallik; J. Dowd; S. Ozaki; D. P. Weygand; A. Etkin; S. K. Dhar; Harold G. Kirk; J. H. Goldman; K.J. Foley; J.K. Kopp; Kramer; A. G. Lesnik; J. R. Bensinger; Janice Button-Shafer; T.W. Morris; Edward D. Platner; Richard C. Fernow; M. Winik; E. H. Willen; Z. Bar-Yam; W. A. Love; W. Morris; R.L. Lichti

We have carried out a sensitive (> or approx. =5 events/nb) search for narrow p-barp states at the BNL Multiparticle Spectrometer. We found no evidence of narrow p-barp states at 2020 and 2200 MeV in the reaction ..pi../sup -/p..-->..p..pi../sup -/p-barp at 16 GeV/c. We quote 2 upper limits of or approx. =5 s signals at 2020 and 2200 MeV.


Physical Review D | 1990

\pi^- p \to f_1(1285) \pi^- p

B. E. Bonner; James Buchanan; J. M. Clement; Corcoran; Krishna Nm; J. Kruk; H. Miettinen; R. Moss; G. S. Mutchler; F. Nessi-Tedaldi; Marzio Nessi; G.C. Phillips; J. Roberts; Paul M. Stevenson; Tonse; Amnon Birman; S. U. Chung; Etkin A; R. Fernow; H. Kirk; S. D. Protopopescu; H.J. Willutzki; Hallman T; L. Madansky; Z. Bar-Yam; J. Dowd; W. Kern; Edmund King; B. Mayes; L. Pinsky


Archive | 1991

at 18-GeV/c

Z. Bar-Yam; J. Dowd; W. Kern; E. King; P. Rulon; S. Blessing; R.R. Crittenden; A. Dzierba; Tony Marshall; Scott Teige; D. Zieminska; A. Boehnlein; D. Boehnlein; J. H. Goldman; V. Hagopian; B.E. Bonner; Jean Marie Clement; N. Krishna; G. S. Mutchler; J. B. Jr. Roberts; S. U. Chung; R. Fernow; H. Kirk; D. C. Peaslee; S. D. Protopopescu; Dennis P. Weygand; H. J. Willutzki


NUCL PHYS B-PROC SUPPL | 1991

SEARCH FOR A J(pc) EXOTIC HYBRID MESON

Edmund King; Z. Bar-Yam; S. Blessing; A. Boehnlein; D. Boehnlein; B. E. Bonner; S. U. Chung; J. M. Clement; R.R. Crittenden; J. Dowd; A. Dzierba; R. Fernow; J. H. Goldman; V. Hagopian; W. Kern; Harold G. Kirk; N. Murali Krishna; T. Marshall; G. S. Mutchler; S. D. Protopopescu; J.B. Roberts; H. Rudnicka; P. Rulon; Scott Teige; D. P. Weygand; H. J. Willutzki; D. Zieminska


NUCL PHYS B-PROC SUPPL | 1991

Search for narrow

A. Boehnlein; D. Boehnlein; J. H. Goldman; V. Hagopian; S. U. Chung; R. Fernow; Harold G. Kirk; S. D. Protopopescu; H. J. Willutzki; S. Blessing; R.R. Crittenden; A. Dzierba; D. Zieminska; B. E. Bonner; J. M. Clement; N. Murali Krishna; G. S. Mutchler; Z. Bar-Yam; J. Dowd; W. Kern; Edmund King; P. Rulon


Physical Review Letters | 1989

\bar{p}p

Amnon Birman; S. U. Chung; D. C. Peaslee; R. Fernow; H. Kirk; S. D. Protopopescu; D. P. Weygand; H. J. Willutzke; A. Boehnlein; D. Boehnline; J. H. Goldman; V. Hagopian; D. Reeves; S. Blessing; R.R. Crittenden; A. Dzierba; T. Marshall; Scott Teige; D. Zieminska; Z. Bar-Yam; J. Dowd; W. Kern; Edmund King; H. Ridnicka; P. Rulon


Physical Review Letters | 1988

states in the reaction

Amnon Birman; S. U. Chung; D. C. Peaslee; R. Fernow; H. Kirk; S. D. Protopopescu; D. P. Weygand; H. J. Willutzki; A. Boehnlein; D. Boehnlein; J. H. Goldman; V. Hagopian; D. Reeves; S. Blessing; R.R. Crittenden; A. Dzierba; T. Marshall; Scott Teige; D. Zieminska; Z. Bar-Yam; J. Dowd; W. Kern; Edmund King; H. Rudnicka; P. Rulon


Physical Review Letters | 1988

π^-p → pπ^-\bar{p}p

Amnon Birman; S. U. Chung; D. C. Peaslee; R. Fernow; H. Kirk; S. D. Protopopescu; D. P. Weygand; H. J. Willutzki; A. Boehnlein; D. Boehnlein; J. H. Goldman; V. Hagopian; D. Reeves; S. Blessing; R.R. Crittenden; A. Dzierba; T. Marshall; Scott Teige; D. Zieminska; Z. Bar-Yam; J. Dowd; W. Kern; Edmund King; H. Rudnicka; P. Rulon

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S. U. Chung

Brookhaven National Laboratory

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S. D. Protopopescu

Brookhaven National Laboratory

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A. Dzierba

Indiana University Bloomington

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R. Fernow

Brookhaven National Laboratory

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R.R. Crittenden

Indiana University Bloomington

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H. Kirk

Brookhaven National Laboratory

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J. H. Goldman

Florida State University

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