Search for an invisibly decaying Higgs boson in e+e- collisions at 189 GeV

被引：12

作者：

Barate, R

Decamp, D

Ghez, P

Goy, C

Jezequel, S

Lees, JP

Martin, F

Merle, E

Minard, MN

Pietrzyk, B

Alemany, R

Bravo, S

Casado, MP

Chmeissani, M

Crespo, JM

Fernandez, E

Fernandez-Bosman, M

Garrido, L

Graugès, E

Juste, A

Martinez, M

Merino, G

Miquel, R

Mir, LM

Morawitz, P

Pacheco, A

Riu, I

Ruiz, H

Colaleo, A

Creanza, D

de Palma, M

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

Lin, J

Ouyang, Q

Wang, T

Xie, Y

Xu, R

Xue, S

机构：

[1] CNRS, Phys Particules Lab, F-74019 Annecy Le Vieux, France

[2] Univ Autonoma Barcelona, Inst Fis Daltes Energies, E-08193 Barcelona, Spain

[3] Ist Nazl Fis Nucl Sezione 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, Phys Corpusculaire Lab, CNRS, IN2P3, F-63177 Clermont Ferrand, France

[7] Niels Bohr Inst, DK-2100 Copenhagen, Denmark

[8] Democritos Nucl Res Ctr, GR-15310 Athens, Greece

[9] Ecole Polytech, Lab Phys Nucl & Hautes Energies, CNRS, IN2P3, F-91128 Palaiseau, France

[10] Univ Florence, Dipartimento Fis, I-50125 Florence, Italy

[11] Ist Nazl Fis Nucl, Sezione Firenze, I-50125 Florence, Italy

[12] Florida State Univ, Supercomp Computat Res Inst, Tallahassee, FL 32306 USA

[13] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[14] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland

[15] Heidelberg Univ, Inst Hochenergiephys, D-69120 Heidelberg, Germany

[16] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2BZ, England

[17] Univ Innsbruck, Inst Expt Phys, A-6020 Innsbruck, Austria

[18] Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England

[19] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany

[20] CNRS, IN2P3, Fac Sci Luminy, Ctr Phys Particules, F-13288 Marseille, France

[21] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy

[22] Ist Nazl Fis Nucl, Sezione Milano, I-20133 Milan, Italy

[23] Max Planck Inst Phys & Astrophys, Werner Heisenberg Inst Phys, D-80805 Munich, Germany

[24] Univ Paris 11, Lab Accelerateur Lineaire, CNRS, IN2P3, F-91898 Orsay, France

[25] Univ Pisa, Dipartimento Fis, I-56010 Pisa, Italy

[26] Ist Nazl Fis Nucl, Sezione Pisa, I-56010 Pisa, Italy

[27] Scuola Normale Super Pisa, I-56010 Pisa, Italy

[28] Univ London Royal Holloway & Bedford New Coll, Dept Phys, Egham TW20 0EX, Surrey, England

[29] Rutherford Appleton Lab, Particle Phys Dept, Didcot OX11 0QX, Oxon, England

[30] CEA, DAPNIA, Serv Phys Particules, F-91191 Gif Sur Yvette, France

[31] CEA Saclay, F-91191 Gif Sur Yvette, France

[32] Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA

[33] Univ Sheffield, Dept Phys, Sheffield S3 7RH, S Yorkshire, England

[34] Univ Siegen, Fachbereich Phys, D-57068 Siegen, Germany

[35] Univ Trieste, Dipartmento Fis, I-34127 Trieste, Italy

[36] Ist Nazl Fis Nucl, Sezione Trieste, I-34127 Trieste, Italy

[37] Univ Washington, Seattle, WA 98195 USA

[38] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

[39] Univ Barcelona, E-08028 Barcelona, Spain

[40] Ist Nazl Fis Nucl, Sezione Catania, Ctr Siciliano Fis Nucl & Struttura Materia, I-95129 Catania, Italy

[41] SAP AG, D-69185 Walldorf, Germany

[42] Harvard Univ, Cambridge, MA 02138 USA

[43] Univ Lausanne, CH-1015 Lausanne, Switzerland

[44] LAL, F-91898 Orsay, France

[45] Univ Turin, Ist Fis Gen, I-10125 Turin, Italy

[46] CERN, CH-1211 Geneva 23, Switzerland

[47] CNR, Inst Cosmo Geofis, Turin, Italy

[48] Ist Nazl Fis Nucl, Sezione Ferrara, I-44100 Ferrara, Italy

[49] Fac Sci Tunis, Dept Phys, Tunis 1060, Tunisia

来源：

PHYSICS LETTERS B | 1999年 / 466卷 / 01期

关键词：

D O I：

10.1016/S0370-2693(99)01104-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The data collected in 1998 by ALEPH at LEP at a centre-of-mass energy of 188.6 GeV, corresponding to an integrated luminosity of 176.2 pb(-1), are analysed to search for invisible decays of a Higgs boson produced in the reaction e(+) e(-) --> hZ. The number of events found in the data and their properties art: in agreement with the Standard Model expectation. This search results in an improved 95% C.L. lower limit on the Higgs boson mass of 95.4 GeV/c(2), assuming it decays totally invisibly and for a production cross section equal to that of the Standard Model. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：50 / 60

页数：11

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