Search for an invisibly decaying Higgs boson in e+e- collisions at √s=183-189 GeV

被引：9

作者：

Acciarri, M

Achard, P

Adriani, O

Aguilar-Benitez, M

Alcaraz, J

Alemanni, G

Allaby, J

Aloisio, A

Alviggi, MG

Ambrosi, G

Anderhub, H

Andreev, VP

Angelescu, T

Anselmo, F

Arefiev, A

Azemoon, T

Aziz, T

Bagnaia, P

Bajo, A

Baksay, L

Balandras, A

Baldew, SV

Banerjee, S

Banerjee, SW

Barczyk, A

Barillère, R

Barone, L

Bartalini, P

Basile, M

Battiston, R

Bay, A

Becattini, F

Becker, U

Behner, F

Bellucci, L

Berbeco, R

Berdugo, J

Berges, P

Bertucci, B

Betev, BL

Bhattacharya, S

Biasini, M

Biland, A

Blaising, JJ

Blyth, SC

Bobbink, GJ

Böhm, A

Boldizsar, L

Borgia, B

Bourilkov, D

机构：

[1] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy

[2] Inst Theoret & Expt Phys, Moscow 117259, Russia

[3] Ist Nazl Fis Nucl, Sez Napoli, I-80125 Naples, Italy

[4] Univ Naples Federico II, I-80125 Naples, Italy

[5] Univ Cyprus, Dept Nat Sci, Nicosia, Cyprus

[6] Univ Nijmegen, NL-6525 ED Nijmegen, Netherlands

[7] Natl Inst Nucl Phys & High Energy Phys, NL-6525 ED Nijmegen, Netherlands

[8] CALTECH, Pasadena, CA 91125 USA

[9] Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy

[10] Univ Perugia, I-06100 Perugia, Italy

[11] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

[12] Princeton Univ, Princeton, NJ 08544 USA

[13] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy

[14] Univ Roma La Sapienza, I-00185 Rome, Italy

[15] Russian Acad Sci, Inst Nucl Phys, St Petersburg, Russia

[16] Ist Nazl Fis Nucl, Sez Napoli, I-85100 Potenza, Italy

[17] Univ Potenza, I-85100 Potenza, Italy

[18] Univ Salerno, I-84100 Salerno, Italy

[19] Ist Nazl Fis Nucl, I-84100 Salerno, Italy

[20] Univ Calif San Diego, La Jolla, CA 92093 USA

[21] Univ Santiago, Dept Fis Particulas Elementales, E-15706 Santiago, Spain

[22] Bulgarian Acad Sci, Cent Lab Mechatron & Instrumentat, BU-1113 Sofia, Bulgaria

[23] Kyungpook Natl Univ, High Energy Phys Lab, Taegu 702701, South Korea

[24] Univ Alabama, University, AL 35486 USA

[25] Univ Utrecht, NL-3584 CB Utrecht, Netherlands

[26] NIKHEF H, NL-3584 CB Utrecht, Netherlands

[27] Purdue Univ, W Lafayette, IN 47907 USA

[28] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[29] DESY, D-15738 Zeuthen, Germany

[30] Swiss Fed Inst Technol, CH-8093 Zurich, Switzerland

[31] Univ Hamburg, D-22761 Hamburg, Germany

[32] Natl Cent Univ, Chungli, Taiwan

[33] Natl Tsing Hua Univ, Dept Phys, Hsinchu, Taiwan

[34] Rhein Westfal TH Aachen, Inst Phys 1, D-52056 Aachen, Germany

[35] Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany

[36] NIKHEF H, Natl Inst High Energy Phys, NL-1009 DB Amsterdam, Netherlands

[37] Univ Amsterdam, NL-1009 DB Amsterdam, Netherlands

[38] Univ Michigan, Ann Arbor, MI 48109 USA

[39] Lab Annecy Le Vieux Phys Particules, CNRS, IN2P3, F-74941 Annecy Le Vieux, France

[40] Univ Basel, Inst Phys, CH-4056 Basel, Switzerland

[41] Louisiana State Univ, Baton Rouge, LA 70803 USA

[42] Inst High Energy Phys, Beijing 100039, Peoples R China

[43] Humboldt Univ, D-10099 Berlin, Germany

[44] Univ Bologna, I-40126 Bologna, Italy

[45] Ist Nazl Fis Nucl, Sez Bologna, I-40126 Bologna, Italy

[46] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

[47] Northeastern Univ, Boston, MA 02115 USA

[48] Inst Atom Phys, R-76900 Bucharest, Romania

[49] Univ Bucharest, R-76900 Bucharest, Romania

[50] Hungarian Acad Sci, Cent Res Inst Phys, H-1525 Budapest 114, Hungary

来源：

PHYSICS LETTERS B | 2000年 / 485卷 / 1-3期

关键词：

D O I：

10.1016/S0370-2693(00)00641-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A search for a Higgs boson decaying into invisible particles is performed using the data collected at LEP by the L3 experiment at centre-of-mass energies of 183 GeV and 189 GeV. The integrated luminosities are respectively 55.3 pb(-1) and 176.4 pb(-1). The observed candidates are consistent with the expectations from Standard Model processes. In the hypothesis that the production cross section of this Higgs boson equals the Standard Model one and the branching ratio into invisible particles is 100%, a lower mass limit of 89.2 GeV is set at 95% confidence level. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：85 / 94

页数：10

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