W. van Rossum | Researchain

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Featured researches published by W. van Rossum.

Physics Letters B | 1996

Study of the structure of hadronic events and determination of αS at s = 130 GeV and 136 GeV

M. Acciarri; G. J. Bobbink; A. Buijs; A. Buytenhuijs; A.P. Colijn; H. De Boeck; D. van Dierendonck; P. Duinker; F.C. Erné; W.C. van Hoek; W. Kittel; A. C. König; E.N. Koffeman; H. Kuijten; F.L. Linde; G.G.G. Massaro; W.J. Metzger; A.J.W. van Mil; H.G. Raven; T. van Rhee; W. van Rossum; D.J. Schotanus; R.T. Van de Walle; B.C.C. van der Zwaan

We present a study of the structure of hadronic events recorded by the L3 detector at center-of-mass energies of 130 and 136 GeV. The data sample corresponds to an integrated luminosity of 5 pb-1 collected during the high energy run of 1995. The shapes of the event shape distributions and the energy dependence of their mean values are well reproduced by QCD models. From a comparison of the data with resummed O(alpha_s^2) QCD calculations, we determine the strong coupling constant to be alpha_s(133 GeV) = 0.107 +/- 0.005(exp) +/- 0.006(theor).

Physics Letters B | 1997

Search for new physics in energetic single photon production in

M. Acciarri; G. J. Bobbink; A. Buijs; A. P. Colijn; D. van Dierendonck; P. Duinker; F.C. Erné; W.C. van Hoek; W. Kittel; A. C. König; F.L. Linde; D. Mangeol; G.G.G. Massaro; W.J. Metzger; A.J.W. van Mil; A.J.M. Muijs; T. Petersen; T. van Rhee; W. van Rossum; D.J. Schotanus; R.T. Van de Walle

Using a sample of

Physics Letters B | 1995

e^{+}e^{-}

M. Acciarri; G. J. Bobbink; B. Bouwens; P. Duinker; F.C. Erné; E.N. Koffeman; F.L. Linde; G.G.G. Massaro; B.C.C. van der Zwaan; A. Buytenhuijs; H. De Boeck; W.C. van Hoek; W. Kittel; A. Koenig; H. Kuijten; W.J. Metzger; A.J.W. van Mil; H.G. Raven; W. van Rossum; D.J. Schotanus; A.A. Syed; R.T. Van de Walle; M.P. Ijzerman

\mathrm{e^{+}e^{-}}

Physics Letters B | 1996

annihilation at the

M. Acciarri; G. J. Bobbink; A. Buijs; A. Buytenhuijs; A. P. Colijn; H. De Boeck; D. van Dierendonck; P. Duinker; F.C. Erné; W.C. van Hoek; W. Kittel; A. C. König; E.N. Koffeman; H. Kuijten; F.L. Linde; G.G.G. Massaro; W.J. Metzger; A.J.W. van Mil; H.G. Raven; T. van Rhee; W. van Rossum; D.J. Schotanus; R.T. Van de Walle; B.C.C. van der Zwaan

annihilation events collected with the L3 detector at the Z resonance corresponding to an integrated luminosity of 137 pb

Physics Letters B | 1997

Z

^{-1}

Physics Letters B | 1995

resonance

M. Acciarri; G.J. Bobbink; B. Bouwens; P. Duinker; F.C. Erné; E.N. Koffeman; F.L. Linde; G.G.G. Massaro; Dengfeng Zhang; B.C.C. van der Zwaan; A. Buytenhuijs; F. Filthaut; D. Hauschildt; W. Kittel; A. Koenig; H. Kuijten; W.J. Metzger; H.G. Raven; R. Rosmalen; W. van Rossum; D.J. Schotanus; L.C. Sens; A.A. Syed; R.T. Van de Walle; M.P. Ijzerman

, we have searched for anomalous production of

Physics Letters B | 1996

Search for neutralinos in Z decays

M. Acciarri; G. J. Bobbink; A. Buijs; A. Buytenhuijs; A. P. Colijn; H. De Boeck; D. van Dierendonck; P. Duinker; F.C. Erné; W.C. van Hoek; W. Kittel; A. C. König; H. Kuijten; F.L. Linde; G.G.G. Massaro; W.J. Metzger; A.J.W. van Mil; T. van Rhee; W. van Rossum; D.J. Schotanus; R.T. Van de Walle

\gamma \mathrm{X}

Physics Letters B | 1995

Measurement of hadron and lepton-pair production at 130 GeV<root s<140 GeV at LEP

final states where

Physics Letters B | 1997

Cross-section of hadron production in

\mathrm{X}

Physics Letters B | 1997

\gamma\gamma

represents stable, weakly interacting particles and the photon energy is greater than 15 GeV. The sample of events found is consistent with Standard Model expectations. Upper limits are set on

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