Search For Pair Production Of Neutral Higgs Bosons In Z0 Decays

P Abreu,W Adam,F Adami,T Adye,G D Alekseev,J Allaby,P Allen,S Almehed,F Alted,S J Alvsvaag,U Amaldi,E G Anassontzis,W D Apel,B Asman,C Astor Ferreres,J E Augustin,A Augustinus,P Baillon,P Bambade,F Barao,G Barbiellini,D Yu Bardin,A Baroncelli,O Barring,W Bartl,M J Bates,M Baubillier,K H Becks,C Beeston,P Beilliere,I Belokopytov,P Beltran,D Benedic,J M Benlloch,M Berggren,D Bertrand,S Biagi,F Bianchi,J H Bibby,M S Bilenky,P Billoir,J Bjarne,D Bloch,P N Bogolubov,D Bollini,T Bolognese,M Bonapart,P S L Booth,M Boratav,P Borgeaud,H Borner,C Bosio,O Botner,B Bouquet,M Bozzo,S Braibant,P Branchini,K D Brand,R Brenner,C Bricman,R C A Brown,N Brummer,J M Brunet,L Bugge,T Buran,H Burmeister,C M Buttar,J Buytaert,M Caccia,M Calvi,A J Camacho Rozas,J E Campagne,A Campion,T Camporesi,V Canale,F Cao,L Carroll,C Caso,E Castelli,M V Castillo Gimenez,A Cattai,F R Cavallo,L Cerrito,P Charpentier,P Checchia,G A Chelkov,L Chevalier,P Chliapnikov,V Chorowicz,R Cirio,M P Clara,J L Contreras,R Contri,G 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Hahn,M Hahn,S Haider,Z Hajduk,A Hakansson,A Hallgren,K Hamacher,G Hamel De Monchenault,J F Harris,B Heck,I Herbst,J J Hernandez,P Herquet,H Herr,E Higon,H J Hilke,T Hofmokl,Ralph E Holmes,S O Holmgren,J E Hooper,M Houlden,J Hrubec,P O Hulth,K Hultqvist,D Husson, Bernard David Hyams,P Ioannou,P S Iversen,J N Jackson,P Jalocha,G Jarlskog,P Jarry,B Jeanmarie,E K Johansson,M Jonker,L Jonsson,P Juillot,R B Kadyrov,G Kalkanis,G Kalmus,G Kantardjian,F Kapusta,P Kapusta,S Katsanevas,E C Katsoufis,R Keranen,J Kesteman,B A Khomenko,Barry King,N J Kjaer,H Klein,W Klempt,A Klovning,P Kluit,J H Koehne,B K S Koene,P Kokkinias,M Kopf,M Koratzinos,K Korcyl,A Korytov,B Korzen,C Kourkoumelis,T Kreuzberger,J Krolikowski,U Kruenermarquis,W Krupinski,W Kucewicz,K Kurvinen,Markku Laakso,C Lambropoulos,J W Lamsa,L Lanceri,V Lapin,J P Laugier,R Lauhakangas,P Laurikainen,G Leder,F Ledroit,J Lemonne,G Lenzen,V Lepeltier,A Letessierselvon,E Lieb,E Lillestol,E Lillethun,J Lindgren,I Lippi,R Llosa,B Loerstad,M 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PHYSICS LETTERS B（1990）

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摘要

The pair production of the lightest scalar Higgs boson, h, and a pseudoscalar Higgs boson, A, was searched for in a data sample containing 10 000 hadronic Z0 decays. The search involved both leptonic and purely hadronic decay channels of each Higgs boson. No signal was found, and limits on the Higgs boson masses, in the framework of the minimal supersymmetric extension of the standard model, ar reported up to 35 GeV/c2 at 95% CL, for both tan β1 and tan β<1, where tan β is the ratio of the vacuum expectation values of the two Higgs doublets.

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关键词

neutral higgs bosons,z0 decays,pair production

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