Search for a Higgs boson decaying into two photons at LEP

被引:28
作者
Achard, P [1 ]
Adriani, O
Aguilar-Benitez, M
Alcaraz, J
Alemanni, G
Allaby, J
Aloisio, A
Alviggi, MG
Anderhub, H
Andreev, VP
Anselmo, F
Arefiev, A
Azemoon, T
Aziz, T
Bagnaia, P
Bajo, A
Baksay, G
Baksay, L
Baldew, SV
Banerjee, S
Banerjee, S
Barczyk, A
Barillère, R
Bartalini, P
Basile, M
Batalova, N
Battiston, R
Bay, A
Becattini, F
Becker, U
Behner, F
Bellucci, L
Berbeco, R
Berdugo, J
Berges, P
Bertucci, B
Betev, BL
Biasini, M
Biglietti, M
Biland, A
Blaising, JJ
Blyth, SC
Bobbink, GJ
Böhm, A
Boldizsar, L
Borgia, B
Bottai, S
Bourilkov, D
Bourquin, M
Braccini, S
机构
[1] Univ Geneva, CH-1211 Geneva 4, Switzerland
[2] Rhein Westfal TH Aachen, Inst Phys 1, D-52056 Aachen, Germany
[3] Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany
[4] NIKHEF, Natl Inst High Energy Phys, NL-1009 DB Amsterdam, Netherlands
[5] Univ Amsterdam, NL-1009 DB Amsterdam, Netherlands
[6] Univ Michigan, Ann Arbor, MI 48109 USA
[7] Lab Annecy Le Vieux Phys Particules, IN2P3 CNRS, F-74941 Annecy Le Vieux, France
[8] Univ Basel, Inst Phys, CH-4056 Basel, Switzerland
[9] Louisiana State Univ, Baton Rouge, LA 70803 USA
[10] Inst High Energy Phys, Beijing 100039, Peoples R China
[11] Humboldt Univ, D-10099 Berlin, Germany
[12] Univ Bologna, I-40126 Bologna, Italy
[13] Ist Nazl Fis Nucl, Sez Bologna, I-40126 Bologna, Italy
[14] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India
[15] Northeastern Univ, Boston, MA 02115 USA
[16] Inst Atom Phys, R-76900 Bucharest, Romania
[17] Univ Bucharest, R-76900 Bucharest, Romania
[18] Hungarian Acad Sci, Cent Res Inst Phys, H-1525 Budapest 114, Hungary
[19] MIT, Cambridge, MA 02139 USA
[20] Panjab Univ, Chandigarh 160014, India
[21] Univ Debrecen, ATOMKI, H-4010 Debrecen, Hungary
[22] Ist Nazl Fis Nucl, Sez Firenze, I-50125 Florence, Italy
[23] Univ Florence, I-50125 Florence, Italy
[24] CERN, European Lab Particle Phys, CH-1211 Geneva 23, Switzerland
[25] FBLJA Project, World Lab, CH-1211 Geneva 23, Switzerland
[26] Chinese Univ Sci & Technol, Hefei 230029, Anhui, Peoples R China
[27] Univ Lausanne, CH-1015 Lausanne, Switzerland
[28] Univ Lyon 1, IN2P3 CNRS, Inst Phys Nucl Lyon, F-69622 Villeurbanne, France
[29] CIEMAT, E-28040 Madrid, Spain
[30] Florida Inst Technol, Melbourne, FL 32901 USA
[31] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy
[32] Inst Theoret & Expt Phys, Moscow 117259, Russia
[33] Ist Nazl Fis Nucl, Sez Napoli, I-80125 Naples, Italy
[34] Univ Naples Federico II, I-80125 Naples, Italy
[35] Univ Cyprus, Dept Phys, Nicosia, Cyprus
[36] Univ Nijmegen, NL-6525 ED Nijmegen, Netherlands
[37] NIKEF, NL-6525 ED Nijmegen, Netherlands
[38] CALTECH, Pasadena, CA 91125 USA
[39] Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy
[40] Univ Perugia, I-06100 Perugia, Italy
[41] Russian Acad Sci, Inst Nucl Phys, St Petersburg, Russia
[42] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA
[43] Ist Nazl Fis Nucl, Sez Napoli, I-85100 Potenza, Italy
[44] Univ Potenza, I-85100 Potenza, Italy
[45] Princeton Univ, Princeton, NJ 08544 USA
[46] Univ Calif Riverside, Riverside, CA 92521 USA
[47] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy
[48] Univ Roma La Sapienza, I-00185 Rome, Italy
[49] Univ Salerno, I-84100 Salerno, Italy
[50] Ist Nazl Fis Nucl, I-84100 Salerno, Italy
关键词
D O I
10.1016/S0370-2693(02)01572-1
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
A Higgs particle produced in association with a Z boson and decaying into two photons is searched for in the data collected by the L3 experiment at LEP. All possible decay modes of the Z boson are investigated. No signal is observed in 447.5 pb(-1) of data recorded at centre-of-mass energies from 192 GeV up to 209 GeV. Limits on the branching fraction of the Higgs boson decay into two photons as a function of the Higgs mass are derived. A lower limit on the mass of a fermiophobic Higgs boson is set at 105.4 GeV at 95% confidence level. (C) 2002 Elsevier Science B.V. All rights reserved.
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页码:28 / 38
页数:11
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