Search for an invisibly-decaying Higgs boson at LEP

被引:25
|
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, I
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] Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany
[2] NIKHEF H, Natl Inst High Energy Phys, NL-1009 DB Amsterdam, Netherlands
[3] Univ Amsterdam, NL-1009 DB Amsterdam, Netherlands
[4] Univ Michigan, Ann Arbor, MI 48109 USA
[5] Lab Annecy Le Vieux Phys Particules, CNRS, F-74941 Annecy Le Vieux, France
[6] Univ Basel, Inst Phys, CH-4056 Basel, Switzerland
[7] Louisiana State Univ, Baton Rouge, LA 70803 USA
[8] Inst High Energy Phys, Beijing 100039, Peoples R China
[9] Univ Bologna, I-40126 Bologna, Italy
[10] INFN, Sez Bologna, I-40126 Bologna, Italy
[11] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India
[12] Northeastern Univ, Boston, MA 02115 USA
[13] Inst Atom Phys, R-76900 Bucharest, Romania
[14] Univ Bucharest, R-76900 Bucharest, Romania
[15] Hungarian Acad Sci, Cent Res Inst Phys, H-1525 Budapest 114, Hungary
[16] MIT, Cambridge, MA 02139 USA
[17] Panjab Univ, Chandigarh 160014, India
[18] Univ Debrecen, ATOMKI, H-4010 Debrecen, Hungary
[19] Natl Univ Ireland Univ Coll Dublin, Dept Expt Phys, Dublin 4, Ireland
[20] Ist Nazl Fis Nucl, Sez Firenze, I-50125 Florence, Italy
[21] Univ Florence, I-50125 Florence, Italy
[22] CERN, CH-1211 Geneva 23, Switzerland
[23] FBLJA Project, World Lab, CH-1211 Geneva 23, Switzerland
[24] Univ Geneva, CH-1211 Geneva 4, Switzerland
[25] Univ Hamburg, D-22761 Hamburg, Germany
[26] Univ Sci & Technol China, Hefei 230029, Anhui, Peoples R China
[27] Univ Lausanne, CH-1015 Lausanne, Switzerland
[28] Univ Lyon 1, Inst Phys Nucl Lyon, CNRS, 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 St Radboud Hosp, NL-6525 ED Nijmegen, Netherlands
[37] Natl Inst Nucl Phys & High Energy Phys, 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] Inst Nucl Phys, St Petersburg, Russia
[42] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA
[43] INFN, 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] INFN, I-84100 Salerno, Italy
关键词
D O I
10.1016/j.physletb.2005.01.030
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
A search for a Higgs boson produced in e(+)e(-) collisions in association with a Z boson and decaying into invisible particles is performed. Data collected at LEP with the U detector at centre-of-mass energies from 189 to 209 GeV are used, corresponding to an integrated luminosity of 0.63 fb(-1). Events with hadrons, electrons or muons with visible masses compatible with a Z boson and missing energy and momentum are selected. They are consistent with the Standard Model expectations. A lower limit of 112.3 GeV is set at 95% confidence level on the mass of the invisibly-decaying Higgs boson in the hypothesis that its production cross section equals that of the Standard Model Higgs boson. Relaxing this hypothesis, upper limits on the production cross section are derived. (C) 2005 Published by Elsevier B.V.
引用
收藏
页码:35 / 48
页数:14
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