Search for unstable sequential neutral and charged heavy leptons in e(+)e(-) annihilation at root s=130 and 136 GeV

被引：10

作者：

Acciarri, M

Adam, A

Adriani, O

AguilarBenitez, M

Ahlen, S

Alpat, B

Alcaraz, J

Alemanni, G

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

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

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

[8] UNIV BASEL, INST PHYS, CH-4056 BASEL, SWITZERLAND

[9] LOUISIANA STATE UNIV, BATON ROUGE, LA 70803 USA

[10] INST HIGH ENERGY PHYS, BEIJING 100039, PEOPLES R CHINA

[11] HUMBOLDT UNIV BERLIN, D-10099 BERLIN, GERMANY

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

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

[14] BOSTON UNIV, BOSTON, MA 02215 USA

[15] NORTHEASTERN UNIV, BOSTON, MA 02115 USA

[16] INST ATOM PHYS, R-76900 BUCHAREST, ROMANIA

[17] UNIV BUCHAREST, R-76900 BUCHAREST, ROMANIA

[18] HUNGARIAN ACAD SCI, CENT RES INST PHYS, H-1525 BUDAPEST 114, HUNGARY

[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, INST PHYS NUCL LYON, IN2P3, CNRS, F-69622 VILLEURBANNE, FRANCE

[32] CIEMAT, E-28040 MADRID, SPAIN

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

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

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

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

[37] UNIV NYMEGEN, NL-6525 ED NIJMEGEN, NETHERLANDS

[38] NATL INST NUCL PHYS & HIGH ENERGY PHYS, NL-6525 ED NIJMEGEN, NETHERLANDS

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

[40] CALTECH, PASADENA, CA 91125 USA

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

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

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

[44] PRINCETON UNIV, PRINCETON, NJ 08544 USA

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

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

[47] INST PHYS NUCL, ST PETERSBURG, RUSSIA

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

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

[50] UNIV CALIF SAN DIEGO, LA JOLLA, CA 92093 USA

来源：

PHYSICS LETTERS B | 1996年 / 377卷 / 04期

基金：

匈牙利科学研究基金会;

关键词：

D O I：

10.1016/0370-2693(96)00466-2

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A search for unstable sequential neutral and charged heavy leptons has been made at center-of-mass energies 130 and 136 GeV with the L3 detector at LEP. The neutral leptons are assumed to decay via mixing to electrons and muons. No evidence for their existence was found. We exclude unstable Dirac neutrinos for masses below 59.3 (57.9) GeV and unstable Majorana neutrinos below 48.6 (47.2) GeV if the neutrino couples to the electron(muon) family. We exclude unstable charged heavy leptons for masses below 61 GeV for a wide range of the associated neutral lepton mass.

引用

页码：304 / 312

页数：9

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