Study of neutral-current four-fermion and ZZ production in e+e- collisions at √s=183GeV

被引：22

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

Baksay, L

Balandras, A

Ball, RC

Banerjee, S

Banicz, K

Barczyk, A

Barillère, R

Barone, L

Bartalini, P

Basile, M

Battiston, R

Bay, A

Becattini, F

Becker, U

Behner, F

Berdugo, J

Berges, P

Bertucci, B

Betev, BL

Bhattacharya, S

Biasini, M

Biland, A

Blaising, JJ

Blyth, SC

Bobbink, GJ

Boldizsar, L

Borgia, B

Bourilkov, D

Bourquin, M

Braccini, S

Branson, JG

机构：

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

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

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

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

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

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

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

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

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

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

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

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

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

[14] Northeastern Univ, Boston, MA 02115 USA

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

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

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

[18] MIT, Cambridge, MA 02139 USA

[19] Univ Florence, I-50125 Florence, Italy

[20] Ist Nazl Fis Nucl, Sez Firenze, I-50125 Florence, Italy

[21] World Lab, FBLJA Project, CH-1211 Geneva 23, Switzerland

[22] CERN, European Lab Particle Phys, CH-1211 Geneva 23, Switzerland

[23] Univ Geneva, CH-1211 Geneva 4, Switzerland

[24] Chinese Univ Sci & Technol, USTC, Hefei 230029, Anhui, Peoples R China

[25] Res Inst High Energy Phys, SEFT, SF-00014 Helsinki, Finland

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

[27] Univ Lecce, I-73100 Lecce, Italy

[28] Ist Nazl Fis Nucl, Sez Lecce, I-73100 Lecce, Italy

[29] Los Alamos Natl Lab, Los Alamos, NM 87544 USA

[30] Univ Lyon 1, CNRS, IN2P3, Inst Phys Nucl Lyon, F-69622 Villeurbanne, France

[31] CIEMAT, Ctr Invest Energet Medioambientales & tecnol, E-28040 Madrid, Spain

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

[33] Inst Theoret & Expt Phys, ITEP, Moscow 117259, Russia

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

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

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

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

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

[39] CALTECH, Pasadena, CA 91125 USA

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

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

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

[43] Princeton Univ, Princeton, NJ 08544 USA

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

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

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

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

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

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

[50] Univ Santiago, Dept Fis Particulas Elementales, E-15706 Santiago De Compostela, Spain

来源：

PHYSICS LETTERS B | 1999年 / 450卷 / 1-3期

关键词：

D O I：

10.1016/S0370-2693(99)00103-3

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A study of neutral-current four-fermion processes is performed using a data sample corresponding to 55.3 pb(-1) of integrated luminosity collected by the L3 detector at LEP at an average centre-of-mass energy of 183 GeV. The neutral-current four-fermion cross sections for final slates with a pair of charged leptons plus jets and with four charged leptons are measured to be consistent with the Standard Model predictions. Events with fermion pair masses close to the Z boson mass are selected in all observable final states and the ZZ production cross section is measured to be sigma ZZ = 0.30(-0.16-0.03)(+0.22 + 0.07) pb, in agreement with the Standard Model expectation. No evidence for the existence of anomalous triple gauge boson ZZZ and ZZ gamma couplings is found and limits on these couplings are set. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：281 / 293

页数：13

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