M.Y. Chen
University of Mons
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Featured researches published by M.Y. Chen.
Physics Letters B | 1985
B. Adeva; U. Becker; R. Becker-Szendy; J. Berdugo; A. Böhm; J. G. Branson; J.D. Burger; M. Capell; M. Cerrada; C.C. Chang; Y. H. Chang; H. S. Chen; M. Chen; M. L. Chen; M.Y. Chen; E. Deffur; M. Demarteau; B.Z. Dong; P. Duinker; H.S. Fesefeldt; D. G. Fong; M. Fukushima; L. Garrido; R.D. Han; D. Harting; G. Herten; M.C. Ho; D. Hüser; M. Hussain; M.M. Ilyas
Abstract PETRA, the e + e − collider, has operated at a maximum CM energy of 46.78 GeV. We update our previous results on new particle searches and set significantly better mass limits on some.
Physical Review Letters | 1983
B. Adeva; Q. Z. Li; D. G. Fong; U. Becker; R.R. Rau; Samuel C.C. Ting; H.G. Wu; H.W. Tang; K. Sinram; H.S. Fesefeldt; B. Zhou; M. Steuer; G. Herten; S. Wu; B. Wyslouch; P. Kuijer; H. Rykaczewski; P. Duinker; J. P. Revol; M. J. White; M.Y. Chen; H. B. Newman; M.A. Marquina; M. Wang; C.C. Chang; F.P. Poschmann; H. S. Chen; Z. Y. Feng; I. Schulz; G.M. Swider
The results of a high-statistics study of inclusive muon spectra at PETRA are reported. Improved mass limits have been obtained for heavy quarks, heavy leptons, and charged Higgs particles. It is shown that the fragmentation properties of b quarks and c quarks are different, with the mean fragmentation variables = 0.75 +- 0.03 +- 0.06, = 0.46 +- 0.02 +- 0.05 and the average semileptonic branching ratio for the B and C hadrons BR(B) = (10.5 +- 1.5 +- 1.3)%, BR(C) = (11.5 +- 1.0 +- 1.7)%.
Physics Letters B | 1982
B. Adeva; D. P. Barber; U. Becker; J. Berdugo; G. Berghoff; A. Böhm; J. G. Branson; J.D. Burger; M. Capell; M. Cerrada; C.C. Chang; H. S. Chen; M. Chen; M. L. Chen; M.Y. Chen; R. Clare; E. Deffur; P. Duinker; Z. Y. Feng; H.S. Fesefeldt; D. G. Fong; M. Fukushima; D. Harting; T. Hebbeker; G. Herten; M.C. Ho; M.M. Ilyas; D.Z. Jiang; D. Kooijman; W. Krenz
Abstract We have used our measurements of final states from e+e− containing an isolated muon and a hadronic or electron shower to search for new spin 0 charged particles. We exclude (95% CL) a supersymmetric partner of the τ with a mass less than 14 GeV/c2. We obtain upper limits on the branching ratio to τvτ for charged Higgs particles or technipions with masses up to 14 GeV/c2. This disagrees with some technicolor model predictions.
Physics Letters B | 1987
B. Adeva; H. Anderhub; S. Ansari; U. Becker; R. Becker-Szendy; J. Berdugo; A. Boehm; M. Bourquin; J. G. Branson; J.D. Burger; C. Camps; M. Cerrada; C.C. Chang; Y. H. Chang; H. S. Chen; M. Chen; M. L. Chen; M.Y. Chen; V. Commichau; E. Deffur; K. Deiters; M. Dhina; J. Fehlmann; H.S. Fesefeldt; D. G. Fong; W. Friebel; M. Fukushima; L. Garrido; K.Z. Guo; R.D. Han
We study the production of single γ, e and μ at high πt using the high energy data of the Mark-J detector at PETRA. We find good agreement with QED. We give mass limits of the SUSY particles γ, v, e and W studying the associated production of W and ẽ and radiative production of pairs of γ or v in three-body reactions.
Physics Letters B | 1987
B. Adeva; H. Anderhub; S. Ansari; U. Becker; R. Becker-Szendy; J. Berdugo; A. Boehm; M. Bourquin; J. G. Branson; J.D. Burger; C. Camps; M. Cerrada; C.C. Chang; Y. H. Chang; H. S. Chen; M. Chen; M. L. Chen; M.Y. Chen; V. Commichau; E. Deffur; K. Deiters; M. Dhina; J. Fehlmann; H.S. Fesefeldt; D. G. Fong; W. Friebel; M. Fukushima; L. Garrido; K.Z. Guo; R.D. Han
We study the production of single γ, e and μ at high πt using the high energy data of the Mark-J detector at PETRA. We find good agreement with QED. We give mass limits of the SUSY particles γ, v, e and W studying the associated production of W and ẽ and radiative production of pairs of γ or v in three-body reactions.
Physics Letters B | 1986
B. Adeva; D. G. Fong; U. Becker; Marquina; Z. Wang; H.W. Tang; V. Commichau; H. Anderhub; H.S. Fesefeldt; Q. Z. Li; S. Ansari; M. Bourquin; B. Wyslouch; M. Tonutti; R.R. Rau; H. Rykaczewski; E. Deffur; G. Viertel; K.Z. Guo; M. Dhina; M. J. White; H. B. Newman; R. Schulte; C. Camps; J. G. Branson; R. Y. Zhu; K.L. Tung; M.M. Ilyas; B. Zhou; B.X. Yang
We study the production of single γ, e and μ at high πt using the high energy data of the Mark-J detector at PETRA. We find good agreement with QED. We give mass limits of the SUSY particles γ, v, e and W studying the associated production of W and ẽ and radiative production of pairs of γ or v in three-body reactions.
Physical Review Letters | 1983
B. Adeva; D. P. Barber; U. Becker; J. Berdugo; G. Berghoff; A. Böhm; J. G. Branson; J.D. Burger; M. Capell; M. Cerrada; C.C. Chang; H. S. Chen; M. Chen; M. L. Chen; M.Y. Chen; Y. S. Chu; R. Clare; E. Deffur; M. Demarteau; P. Duinker; Z. Y. Feng; H.S. Fesefeldt; D. G. Fong; M. Fukushima; D. Harting; T. Hebbeker; G. Herten; M.C. Ho; M.M. Ilyas; D.Z. Jiang
Physics Reports | 1984
B. Adeva; D. P. Barber; U. Becker; J. Berdugo; A. Böhm; J. G. Branson; J.D. Burger; M. Capell; M. Cerrada; H. S. Chen; M. Chen; M. L. Chen; M.Y. Chen; Y. S. Chu; R. Clare; E. Deffur; M. Demarteau; P. Duinker; H.S. Fesefeldt; D. G. Fong; M. Fukushima; R.D. Han; D. Harting; T. Hebbeker; G. Herten; M.C. Ho; M. Hussain; M.M. Ilyas; D.Z. Jiang; W. Krenz
Physical Review Letters | 1983
B. Adeva; D. P. Barber; U. Becker; J. Berdugo; G. Berghoff; A. Böhm; J. G. Branson; J.D. Burger; M. Capell; M. Cerrada; C.C. Chang; H. S. Chen; M. Chen; M. L. Chen; M.Y. Chen; Y. S. Chu; R. Clare; E. Deffur; M. Demarteau; P. Duinker; Z. Y. Feng; H.S. Fesefeldt; D. G. Fong; M. Fukushima; D. Harting; T. Hebbeker; G. Herten; M.C. Ho; M.M. Ilyas; D.Z. Jiang
Physical Review Letters | 1984
B. Adeva; D. P. Barber; U. Becker; J. Berdugo; A. Boehm; J. G. Branson; J.D. Burger; M. Capell; M. Cerrada; C.C. Chang; Y. H. Chang; H. S. Chen; M. Chen; M. L. Chen; M.Y. Chen; E. Deffur; M. Demarteau; B.Z. Dong; P. Duinker; H.S. Fesefeldt; D. G. Fong; M. Fukushima; L. Garrido; R.D. Han; D. Harting; G. Herten; M.C. Ho; M. Hussain; M.M. Ilyas; C. H. Jiang
