Search for the standard model Higgs boson at the LEP2 collider near √s=183 GeV (vol 440, pg 403, 1998)

被引:13
作者
Barate, R [1 ]
Buskulic, D
Decamp, D
Ghez, P
Goy, C
Jezequel, S
Lees, JP
Martin, F
Merle, E
Minard, MN
Nief, JY
Perrodo, P
Pietrzyk, B
Alemany, R
Casado, MP
Chmeissani, M
Crespo, JM
Delfino, M
Fernandez, E
Fernandez-Bosman, M
Garrido, L
Graugès, E
Juste, A
Martinez, M
Merino, G
Miquel, R
Mir, LM
Morawitz, P
Pacheco, A
Park, IC
Pascual, A
Riu, I
Sanchez, F
Colaleo, A
Creanza, D
de Palma, M
Gelao, G
Iaselli, G
Maggi, G
Maggi, M
Nuzzo, S
Ranieri, A
Raso, G
Ruggieri, F
Selvaggi, G
Silvestris, L
Tempesta, P
Tricomi, A
Zito, G
Huang, X
机构
[1] CNRS, IN2P3, Phys Particules Lab, F-74019 Annecy Le Vieux, France
[2] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain
[3] Ist Nazl Fis Nucl, Sez Bari, Dipartimento Fis, I-70126 Bari, Italy
[4] Acad Sinica, Inst High Energy Phys, Beijing, Peoples R China
[5] CERN, European Lab Particle Phys, CH-1211 Geneva 23, Switzerland
[6] Univ Blaise Pascal, CNRS, IN2P3, Phys Corpusculaire Lab, F-63177 Clermont Ferrand, France
[7] Niels Bohr Inst, DK-2100 Copenhagen, Denmark
[8] Democritos Nucl Res Ctr, GR-15213 Athens, Greece
[9] Ecole Polytech, CNRS, IN2P3, Lab Phys Nucl & Hautes Energies, F-91128 Palaiseau, France
[10] Univ Florence, Ist Nazl Fis Nucl, Sez Firenze, Dipartimento Fis, I-50125 Florence, Italy
[11] Florida State Univ, Supercomp Computat Res Inst, Tallahassee, FL 32306 USA
[12] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy
[13] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland
[14] Heidelberg Univ, Inst Hochenergiephys, D-69120 Heidelberg, Germany
[15] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2BZ, England
[16] Univ Innsbruck, Inst Expt Phys, A-6020 Innsbruck, Austria
[17] Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England
[18] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany
[19] Fac Sci Luminy, CNRS, IN2P3, Ctr Phys Particules, F-13288 Marseille, France
[20] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy
[21] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy
[22] Max Planck Inst Phys & Astrophys, Werner Heisenberg Inst, D-80805 Munich, Germany
[23] Univ Paris Sud, Lab Accelerateur Lineaire, IN2P3, CNRS, F-91898 Orsay, France
[24] Univ Pisa, Dipartimento Fis, Ist Nazl Fis Nucl, Sez Pisa, I-56010 Pisa, Italy
[25] Scuola Normale Super Pisa, I-56010 Pisa, Italy
[26] Univ London, Royal Holloway & Bedford New Coll, Dept Phys, Egham TW20 0EX, Surrey, England
[27] Rutherford Appleton Lab, Dept Particle Phys, Didcot OX11 0QX, Oxon, England
[28] CE Saclay, Serv Phys Particules, CEA, DAPNIA, F-91191 Gif Sur Yvette, France
[29] Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA
[30] Univ Sheffield, Dept Phys, Sheffield S3 7RH, S Yorkshire, England
[31] Univ Siegen, Fachbereich Phys, D-57068 Siegen, Germany
[32] Univ Trieste, Dipartmento Fis, I-34127 Trieste, Italy
[33] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy
[34] Univ Washington, Seattle, WA 98195 USA
[35] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA
[36] Univ Barcelona, E-08028 Barcelona, Spain
[37] Ist Nazl Fis Nucl, Dipartimento Fis, Sez Catania, I-95129 Catania, Italy
[38] Univ Turin, Ist Fis Gen, Turin, Italy
[39] CNR, Ist Cosmogeofis, I-10133 Turin, Italy
[40] CERN, CH-1211 Geneva 23, Switzerland
[41] Kangnung Natl Univ, Kangnung, South Korea
关键词
D O I
10.1016/S0370-2693(98)01506-8
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
During 1997 the ALEPH experiment at LEP gathered 57 pb(-1) of data at centre-of-mass energies near 183 GeV. These data are used to look for possible signals from the production of the Standard Model Higgs boson in the reaction e(+)e(-) --> HZ. No evidence of a signal is found in the data; seven events are selected, in agreement with the expectation of 7.2 events from background processes. This observation results in an improved lower limit on the mass of the Higgs boson: m(H) greater-than 87.9 GeV/c(2) at 95% confidence level. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:336 / 351
页数:16
相关论文
共 30 条
[21]   Optimally combined confidence limits [J].
Janot, P ;
Le Diberder, F .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1998, 411 (2-3) :449-466
[22]  
JANOT P, 1996, PHYSICS LEP2, V2, P309
[23]  
*L3 COLL, IN PRESS PHYS LETT B
[24]   PATTERN-RECOGNITION IN HIGH-ENERGY PHYSICS WITH ARTIFICIAL NEURAL NETWORKS - JETNET-2.0 [J].
LONNBLAD, L ;
PETERSON, C ;
ROGNVALDSSON, T .
COMPUTER PHYSICS COMMUNICATIONS, 1992, 70 (01) :167-182
[25]  
LONNBLAD L, 1994, 713594 CERNTH
[26]   SCALING VIOLATIONS IN INCLUSIVE E+E- ANNIHILATION SPECTRA [J].
PETERSON, C ;
SCHLATTER, D ;
SCHMITT, I ;
ZERWAS, PM .
PHYSICAL REVIEW D, 1983, 27 (01) :105-111
[27]  
PETERSON C, 1991, INTRO ARTIFICIAL NEU, P113
[28]   MULTI-MODULAR NEURAL NETWORKS FOR THE CLASSIFICATION OF E(+)E(-) HADRONIC EVENTS [J].
PRORIOL, J .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1994, 337 (2-3) :566-572
[29]   HARD QCD WORKING GROUP - THEORY SUMMARY [J].
STIRLING, WJ .
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 1991, 17 (10) :1567-1574
[30]  
ZELL A, 1995, 695 U STUTTG I PAR D