H. Haan
RWTH Aachen University
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Publication
Featured researches published by H. Haan.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1991
O. Adriani; A. Arefiev; Q. An; T. Azemoon; T. Aziz; R.C. Ball; S. Banerjee; P. Blömeke; M. Capell; X.D. Cai; C. Chen; G. M. Chen; H. S. Chen; M.L. Chen; S.R. Chendvankar; C. Civinini; X.Y. Cui; Raffaello D'Alessandro; Yu. Galaktionov; E. Gallo; S.N. Ganguli; Steven Goldfarb; Z.F. Gong; A. Gordeev; Yu. Gorodkov; A. Gurtu; H. Haan; H. Hofer; M.M. Ilyas; L.W. Jones
Abstract The characteristics of the L3 hadron calorimeter as realized in the observation of hadronic jets and other events from e + e − collisions at LEP are presented and discussed. The pattern-recognition algorithm utilizing the fine granulatiry of the calorimeter is described, and the observed overall resolution of 10.2% for hadron jets from Z decay is reported. The use of the calorimeter in providing information on muon energy losses is also noted.
Physics Letters B | 1998
J. Kaulard; C. Dohmen; H. Haan; W. Honecker; D. Junker; G. Otter; M. Starlinger; P. Wintz; J. Hofmann; W. Bertl; J. Egger; B. Krause; S. Eggli; R. Engfer; Ch. Findeisen; E.A. Hermes; T. Kozlowski; C. B. Niebuhr; M. Rutsche; H. Pruys; A. van der Schaaf
Abstract The SINDRUM II spectrometer at PSI is used in searches for μ → e conversion in muonic atoms. Here we report on a search for the charge-changing μ − → e + conversion on titanium. The measurements yielded the new upper limits Γ ( μ − Ti → e + Ca GS )/ Γ ( μ − Ti capture) −12 (90% CL) for the ground state transition and Γ ( μ − Ti → e + Ca GDR )/ Γ ( μ − Ti capture) −11 (90% CL) for a giant dipole resonance excitation with both a mean energy and a width of 20 MeV. These results improve on our previous best limits by a factor of 2.5.
Physical Review Letters | 1996
W. Honecker; Wilhelm Bertl; E.A. Hermes; B. Krause; S. Eggli; H. Pruys; J. Hofmann; T. Kozlowski; C. Dohmen; J. Egger; C. Niebuhr; P. Wintz; G. Otter; R. Engfer; H. Haan; D. Junker; A. van der Schaaf; Ch. Findeisen; M. Starlinger
Physical Review Letters | 1996
W. Honecker; C. Dohmen; H. Haan; D. Junker; G. Otter; M. Starlinger; P. Wintz; J. Hofmann; W. Bertl; J. Egger; B. Krause; S. Eggli; R. Engfer; Ch. Findeisen; E.A. Hermes; T. Kozlowski; C. Niebuhr; H. Pruys; A. van der Schaaf
