Search for excited leptons in e(+)e(-) annihilation at root S=130-140 GeV

被引：20

作者：

Acciarri, M ^{[1
]}

Adam, A

Adriani, O

AguilarBenitez, M

Ahlen, S

Alpat, B

Alcaraz, J

Allaby, J

Aloisio, A

Alverson, G

Alviggi, MG

Ambrosi, G

Anderhub, H

Andreev, VP

Angelescu, T

Antreasyan, D

Arefiev, A

Azemoon, T

Aziz, T

Bagnaia, P

Baksay, L

Ball, RC

Banerjee, S

Banicz, K

Barillere, R

Barone, L

Bartalini, P

Baschirotto, A

Basile, M

Battiston, R

Bay, A

Becattini, F

Becker, U

Behner, F

Bencze, GL

Berdugo, J

Berges, P

Bertucci, B

Betev, BL

Biasini, M

Biland, A

Bilei, GM

Blaising, JJ

Blyth, SC

Bobbink, GJ

Bock, R

Bohm, A

Borgia, B

Boucham, A

Bourilkov, D

机构：

[1] RHEIN WESTFAL TH AACHEN, INST PHYS 3, D-52056 AACHEN, GERMANY

[2] NATL INST NUCL & HIGH ENERGY PHYS, 1009 DB AMSTERDAM, NETHERLANDS

[3] UNIV AMSTERDAM, 1009 DB AMSTERDAM, NETHERLANDS

[4] UNIV MICHIGAN, ANN ARBOR, MI 48109 USA

[5] LAB ANNECY LE VIEUX PHYS PARTICULES, CNRS, IN2P3, F-74941 ANNECY LE VIEUX, FRANCE

[6] JOHNS HOPKINS UNIV, BALTIMORE, MD 21218 USA

[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] INST HIGH ENERGY PHYS, D-10099 BERLIN, GERMANY

[11] IST NAZL FIS NUCL, I-40126 BOLOGNA, ITALY

[12] TATA INST FUNDAMENTAL RES, BOMBAY 400005, MAHARASHTRA, INDIA

[13] BOSTON UNIV, BOSTON, MA 02215 USA

[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] HARVARD UNIV, CAMBRIDGE, MA 02139 USA

[19] MIT, CAMBRIDGE, MA 02139 USA

[20] IST NAZL FIS NUCL, I-50125 FLORENCE, ITALY

[21] UNIV FLORENCE, I-50125 FLORENCE, ITALY

[22] CERN, EUROPEAN LAB PARTICLE PHYS, CH-1211 GENEVA 23, SWITZERLAND

[23] WORLD LAB, FBLJA PROJECT, CH-1211 GENEVA 23, SWITZERLAND

[24] UNIV GENEVA, CH-1211 GENEVA 4, SWITZERLAND

[25] UNIV SCI & TECHNOL CHINA, HEFEI 230029, ANHUI, PEOPLES R CHINA

[26] RES INST HIGH ENERGY PHYS, SF-00014 HELSINKI, FINLAND

[27] UNIV LAUSANNE, CH-1015 LAUSANNE, SWITZERLAND

[28] IST NAZL FIS NUCL, I-73100 LECCE, ITALY

[29] UNIV LECCE, I-73100 LECCE, ITALY

[30] LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87544 USA

[31] UNIV LYON 1, CNRS, INST PHYS NUCL LYON, IN2P3, F-69622 VILLEURBANNE, FRANCE

[32] CIEMAT, E-28040 MADRID, SPAIN

[33] IST NAZL FIS NUCL, I-20133 MILAN, ITALY

[34] INST THEORET & EXPTL PHYS, MOSCOW 117259, RUSSIA

[35] IST NAZL FIS NUCL, I-80125 NAPLES, ITALY

[36] UNIV NAPLES, I-80125 NAPLES, ITALY

[37] UNIV CYPRUS, DEPT NAT SCI, NICOSIA, CYPRUS

[38] CATHOLIC UNIV NIJMEGEN, 6525 ED NIJMEGEN, NETHERLANDS

[39] NATL INST NUCL PHYS & HIGH ENERGY PHYS, 6525 ED NIJMEGEN, NETHERLANDS

[40] OAK RIDGE NATL LAB, OAK RIDGE, TN 37831 USA

[41] CALTECH, PASADENA, CA 91125 USA

[42] IST NAZL FIS NUCL, I-06100 PERUGIA, ITALY

[43] UNIV PERUGIA, I-06100 PERUGIA, ITALY

[44] CARNEGIE MELLON UNIV, PITTSBURGH, PA 15213 USA

[45] PRINCETON UNIV, PRINCETON, NJ 08544 USA

[46] IST NAZL FIS NUCL, I-00185 ROME, ITALY

[47] UNIV ROMA LA SAPIENZA, I-00185 ROME, ITALY

[48] INST PHYS NUCL, ST PETERSBURG, RUSSIA

[49] UNIV SALERNO, I-84100 SALERNO, ITALY

[50] IST NAZL FIS NUCL, I-84100 SALERNO, ITALY

来源：

PHYSICS LETTERS B | 1996年 / 370卷 / 1-2期

基金：

匈牙利科学研究基金会;

关键词：

D O I：

10.1016/0370-2693(96)00045-7

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on a search for the excited leptons e*, mu*, tau* and nu* in e(+)e(-) collisions at root s = 130-140 GeV using the L3 detector at LEP. No evidence has been found for their existence. From an analysis of the expected pair produced l*l* in the channels ee gamma gamma, mu mu gamma gamma, tau tau gamma gamma, eeWW, and nu nu gamma gamma, We determine the lower mass limits at 95% C.L. of 64.7 GeV for e*, 64.9 GeV for mu*, 64.2 GeV for tau*, 57.3 GeV (eW decay mode) and 61.4 GeV (nu gamma decay mode) for nu*. From an analysis of the expected singly produced ll* in the channels ee gamma, mu mu gamma, tau tau gamma, nu eW and nu nu gamma, we determine upper limits on the couplings lambda/m(l*) up to m(l*) = 130 GeV.

引用

页码：211 / 221

页数：11

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