OPAL Conference Proceedings

2018-03-01
06:11
 Prompt photon production in hadronic events at LEP / Boutigny, D (Annecy, LAPP) We review some recent results on photon emission off quarks obtained by the four LEP experiments. These experimental results are compared to different Monte-Carlo predictions and to an exact matrix element calculation at the order (ems). [...] 1992 - 6 p. - Published in : (1992) , pp. 37-42 Fulltext: PDF; In : 27th Rencontres de Moriond : Hadronic Session, Les Arcs, France, 22 - 28 Mar 1992, pp.37-42

2018-02-21
06:04
 LEP precision results / Kawamoto, T (Tokyo U., ICEPP) Precision measurements at LEP are reviewed, with main focus on the electroweak measurements and tests of the Standard Model. [...] 2001. - 23 p. Full text - Fulltext

2018-02-21
06:04
 LEP W measurements / Saeki, Takayuki (Tokyo U., ICEPP) In June 1996, the LEP center-of-mass energy was raised to 161 GeV, just above the threshold of pair-production of W bosons, and LEP2 experiments started. [...] 2001. - 35 p. Full text - Fulltext

2018-02-21
06:04
 LEP Higgs / Mori, T (Tokyo U., ICEPP) LEP had long been the only place where the Higgs boson could be unambiguously searched for. As the LEP experiments veriﬁed the gauge interactions more and more rigorously, searches for the Higgs boson, which forms the very basis of the gauge theories, were taking on more and more importance in LEP physics. [...] 2001. - 15 p. Full text - Fulltext

2018-01-31
07:36
 Photon radiation from quarks at LEP / Thompson, J C (Rutherford) Earlier measurements at LEP of isolated hard photons in hadronic zo decays attributed to radiation from primary quark pairs, have been extended in the ALEPH experiment to include their production inside hadron jets. Events are selected where all particles combine "democratically" to form 2 hadron jets, one of which contains a photon with a fractional energy z � 0. [...] 1994 - 6 p. - Published in : (1994) , pp. 45-50 Fulltext: PDF; In : 29th Rencontres de Moriond : Hadronic Session, Méribel-lès-Allues, France, 19 - 26 Mar 1994, pp.45-50

2018-01-30
07:15
 Measurement of tau lepton decays to kaons at OPAL / Ward, C P (Cambridge U.) /OPAL 1995 - 4 p. - Published in : (1995) , pp. 207-210 Fulltext: PDF; In : 30th Rencontres de Moriond : Leptonic Session, Les Arcs, France, 11 - 18 Mar 1995, pp.207-210

2018-01-10
06:52
 Measurement of the branching fractions and forward-backward asymmetries of the Z0 into light quarks / Grandi, Claudio (Bologna U.) Using approximately 4.3 million hadronic Z0 decays collected with the OPAL detector at LEP between 1990 and 1995, we measure the branching fractions of the zo into up-type and down-type light quarks, Rq, and the forward-backward asymmetries, AFB (q) . High-momentum stable particles are used to tag parton flavours and double tagged events are used to determine the flavour tagging efficiencies. [...] 1997 - 4 p. - Published in : (1997) , pp. 145-148 Fulltext: PDF; In : 32nd Rencontres de Moriond : Leptonic Session, Les Arcs, France, 15 - 22 Mar 1997, pp.145-148

2018-01-09
06:36
 Study of Phi(1020), D*+- and B* spin alignment in hadronic Z0 decays / Robins, S (Technion) /OPAL 1997 - 2 p. - Published in : (1997) , pp. 315-316 Fulltext: PDF; In : 32nd Rencontres de Moriond, Les Arcs, France, 22 - 29 Mar 1997, pp.315-316

2018-01-09
06:36
 Jet rates in e+ e- annihilation between s**(1/2) = 22-GeV and 172-GeV / Pfeifenschneider, P (Aachen, Tech. Hochsch.) /OPAL 1997 - 2 p. - Published in : (1997) , pp. 305-306 Fulltext: PDF; In : 32nd Rencontres de Moriond, Les Arcs, France, 22 - 29 Mar 1997, pp.305-306

2018-01-09
06:36
 Search for new physics at LEP 2 / Gross, Eilam (Weizmann Inst.) The results of the search for Higgs bosons, Charginos, Neutralinos, Sleptons, Squarks and light Gravitinos with the LEP accelerator at 130-172 GeV center-of-mass energy are briefly described. Prospects for Standard Model Higgs search at higher center-of-mass energies are also given.. 1997 - 8 p. - Published in : (1997) , pp. 15-22 Fulltext: PDF; In : 32nd Rencontres de Moriond, Les Arcs, France, 22 - 29 Mar 1997, pp.15-22