S. U. Chung
University of Mainz
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Featured researches published by S. U. Chung.
Physics Letters B | 1995
C. Amsler; C. J. Batty; D. Engelhardt; R.P. Haddock; H. Stock; J. Brose; K.M. Crowe; M. Suffert; D. Walther; D. Jamnik; C. Kolo; T. Degener; R. Landua; H. Kalinowsky; F. Loser; N. P. Hessey; E. Schäfer; C. Strassburger; L. Montanet; J. Salk; E. Klempt; O. Cramer; W. Dünnweber; M. Merkel; U. Strohbusch; S. Ravndal; Mark J. Burchell; R. Bossingham; S. Spanier; M. Kunze
Abstract A partial-wave analysis of the reaction p p →π 0 π 0 π 0 has been performed using a high-quality high-statistics data set of 712 000 events. In addition to the f0(975) and f0(1300), the scalar resonance with mass m = (1500 ± 15) MeV and width Γ = (120 ± 25) MeV is necessary to describe the data.
Physics Letters B | 1995
C. Amsler; D.S. Armstrong; C. A. Baker; B.M. Barnett; C. J. Batty; M. Benayoun; K. Beuchert; P. Birien; Philipp Blum; R. Bossingham; K. Braune; J. Brose; D.V. Bugg; T. Case; S. U. Chung; A. Cooper; O. Cramer; K.M. Crowe; T. Degener; H.P. Dietz; N. Djaoshvili; S.v. Dombroski; M. Doser; W. Dünnweber; D. Engelhardt; M. Englert; M. Faessler; C. Felix; P. Giarritta; R. Hackmann
We confirm the existence of the two IG(JPC) = 0+(0++) resonances f0(1370) and f0(1500) reported by us in earlier analyses. The analysis presented here couples the final states π0π0π0, π0π0η and π0ηη of pp annihilation at rest. It is based on a 3 × 3 K-matrix. We find masses and widths of M = (1390±30) MeV, Γ = (380±80) MeV; and M = (1500±10) MeV, Γ = (154 ± 30) MeV, respectively. The product branching ratios for the production and decay into π0π0 and ηη of the f0(1500) are (1.27 ± 0.33) · 10−3 and (0.60 ± 0.17) · 10−3, respectively.
Physics Letters B | 1994
C. Amsler; V.V. Anisovich; D.S. Armstrong; I. Augustin; C. A. Baker; B.M. Barnett; C.J. Batty; K. Beuchert; P. Birien; Philipp Blum; R. Bossingham; K. Braune; J. Brose; D.V. Bugg; Mark J. Burchell; T. Case; S. U. Chung; A. Cooper; K.M. Crowe; T. Degener; H.P. Dietz; S. von Dombrowski; M. Doser; W. Dünnweber; D. Engelhardt; M. Englert; M. Faessler; C. Felix; R. Hackmann; R.P. Haddock
Abstract A new IG=1− JPC=0++πη resonance is observed in pp annihilation at rest into π0π0η. It has a mass M=(1450±40)MeV and a width Γ=(270±40)MeV.
Physics Letters B | 1992
C. Amsler; I. Augustin; C. A. Baker; B.M. Barnett; C. J. Batty; K. Beuchert; P. Birien; J. Bistirlich; Philipp Blum; R. Bossingham; H. Bossy; K. Braune; D.V. Bugg; Mark J. Burchell; T. Case; S. U. Chung; A. Cooper; K.M. Crowe; H.P. Dietz; S.v. Dombrowski; M. Doser; W. Dünnweber; D. Engelhardt; M. Englert; M. Faessler; C. Felix; G. Folger; R. Hackmann; R.P. Haddock; F.-H. Heinsius
Abstract We have determined ratios of branching ratios for p p annihilations at rest into π 0 η and π 0 η ′, into ηη and ηη ′, and into ωη and ωη ′. All reactins are observed in two different all-neutral final states. The ratios permit a determination of the pseudoscalar mixing angle. We find Θ PS = −(17.3±1.8)°.
Physics Letters B | 1994
C. Amsler; D.S. Armstrong; I. Augustin; C. A. Baker; B.M. Barnett; C. J. Batty; K. Beuchert; P. Birien; Philipp Blum; R. Bossingham; K. Braune; J. Brose; D.V. Bugg; Mark J. Burchell; T. Case; S. U. Chung; A. Cooper; O. Cramer; K.M. Crowe; T. Degener; H.P. Dietz; S.v. Dombrowski; M. Doser; W. Dünnweber; D. Engelhardt; M. Englert; M. Faessler; C. Felix; R. Hackmann; R.P. Haddock
Abstract We report on the observation of an ηη′ threshold enhancement produced in pp annihilations at rest into π0ηη′, which we identify with the recently discovered ƒ 0 (1500) .
European Physical Journal A | 1993
C. Amsler; D.S. Armstrong; I. Augustin; C. A. Baker; B.M. Barnett; C.J. Batty; K. Beuchert; P. Birien; J. Bistirlich; Philipp Blum; R. Bossingham; H. Bossy; K. Braune; J. Brose; D.V. Bugg; Mark J. Burchell; T. Case; S. U. Chung; A. Cooper; K.M. Crowe; H.P. Dietz; S.v. Dombrowski; M. Doser; W. Dünnweber; D. Engelhardt; M. Englert; M. Faessler; C. Felix; G. Folger; R. Hackmann
AbstractWe report measurements of branching ratios for production of a series of two meson final states inn
Physics Letters B | 1995
C. Amsler; D.S. Armstrong; C. A. Baker; B.M. Barnett; C. J. Batty; K. Beuchert; P. Birien; Philipp Blum; R. Bossingham; K. Braune; J. Brose; D.V. Bugg; Mark J. Burchell; T. Case; S. U. Chung; A. Cooper; O. Cramer; K.M. Crowe; T. Degener; H.P. Dietz; N. Djaoshvili; S.v. Dombrowski; M. Doser; W. Dünnweber; D. Engelhardt; M. Englert; M. Faessler; C. Felix; P. Giarritta; R. Hackmann
Physics Letters B | 1993
C. Amsler; D.S. Armstrong; I. Augustin; C. A. Baker; B.M. Barnett; C. J. Batty; K. Beuchert; P. Birien; J. Bistirlich; Philipp Blum; R. Bossingham; H. Bossy; K. Braune; J. Brose; D.V. Bugg; Mark J. Burchell; T. Case; S. U. Chung; A. Cooper; K.M. Crowe; H.P. Dietz; S.v. Dombrowski; M. Doser; W. Dünnweber; D. Engelhardt; M. Englert; M. Faessler; C. Felix; G. Folger; R. Hackmann
bar p
Physics Letters B | 1994
C. Amsler; D.S. Armstrong; I. Augustin; C. A. Baker; B.M. Barnett; C. J. Batty; K. Beuchert; P. Birien; Philipp Blum; R. Bossingham; K. Braune; J. Brose; D.V. Bugg; Mark J. Burchell; T. Case; S. U. Chung; A. Cooper; K.M. Crowe; T. Degener; H.P. Dietz; S. von Dombrowski; M. Doser; W. Dünnweber; D. Engelhardt; M. Englert; M. Faessler; C. Felix; R. Hackmann; R.P. Haddock; F.H. Heinsius
Physics Letters B | 1993
C. Amsler; D.S. Armstrong; I. Augustin; C. A. Baker; B.M. Barnett; C. J. Batty; K. Beuchert; P. Birien; J. Bistirlich; Philipp Blum; R. Bossingham; H. Bossy; K. Braune; J. Brose; D.V. Bugg; Mark J. Burchell; T. Case; S. U. Chung; A. Cooper; K.M. Crowe; H.P. Dietz; S.v. Dombrowski; M. Doser; W. Dünnweber; D. Engelhardt; M. Englert; M. Faessler; C. Felix; G. Folger; R. Hackmann
np annihilations at rest in liquid hydrogen. We find:n
