Standard model Higgs boson with the L3 experiment at LEP

Pablo Achard,Oscar S. Adriáni,M. Aguilar-Benítez,Juan Alcaraz,G. Alemanni,Jim V. Allaby,Alberto Aloisio,M. G. Alviggi,Hans B. Anderhub,V. P. Andreev,F. Anselmo,A. S. Arefiev,Tofigh Azemoon,Tariq Aziz,Marc M. Baarmand,Paolo Bagnaia, A. Bajo,Gyöngyi Baksay,László A. Baksay,S. V. Baldew,Sw W. Banerjee,Artur Barczyk,R. Barillère,P. Bartalini,Maurizio Basile,N. V. Batalova,Roberto Battiston,Aurelio Bay,Francesco Becattini,Ulrich J. Becker,F. Behner,Luca Bellucci,Ross I. Berbeco,J. Berdugo,P. Berges,Bruna Bertucci,Botio L. Betev,Maurizio Biasini,M. G. Biglietti,Adrian Biland,JJ J. Blaising, S. C. Blyth,GJ J. Bobbink, Albrecht Böhm,László Boldizsár,Bruno Borgia,Dimitri Bourilkov,Maurice H. Bourquin,Stefano Braccini,James G. Branson,Frederic M. Brochu,A. Buijs,Joseph D. Bürger,William J. Burger,Xu Cai,Michael Capell,G. Cara Romeo,Gianpaolo P. Carlino,Annamaria M. Cartacci,Jorge Casaus,Francesca Cavallari,Nicola Cavallo,Claudia Cecchi,M. Cerrada,M. Chamizo Chamizo,Yun Chang,M. Chemarin,Augustine E. Chen,Guomeng Chen,Guoming Chen,Hui Chen,Hesheng Chen,G. V. Chiefari,Luisa Cifarelli,Federico Cindolo,I. Clare,Robert M. Clare,Guy G. Coignet, N. Colino,Silvia Costantini,Begoña De La Cruz,Susanna Cücciarelli,Tiesheng Dai,J. A. Van Dalen,Riccardo De Asmundis,P. Déglon,J. Debreczeni,A. Degré, K. Deiters,D. Della Volpe,E. Delmeire,Peter Denes,Francesco De Notaristefani,Alessandro De Salvo,Marcella Diemoz,Mark Dierckxsens,D. van Dierendonck,Carla Dionisi

Physics Letters B（2001）

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摘要

Final results of the search for the standard model Higgs boson are presented for the data collected by the L3 detector at LEP at centre-of-mass energies up to about 209 GeV. These data are compared with the expectations of standard model processes for Higgs boson masses up to 120 GeV. A lower limit on the mass of the standard model Higgs boson of 112.0 GeV is set at the 95% confidence level. The most significant high mass candidate is a Hνν̄ event. It has a reconstructed Higgs mass of 115 GeV and it was recorded at s=206.4 GeV.

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