Search for excited leptons in e(+)e(-) collisions at root s=161 GeV

被引：22

作者：

Abreu, P

Adam, W

Adye, T

Ajinenko, I

Alekseev, GD

Alemany, R

Allport, PP

Almehed, S

Amaldi, U

Amato, S

Andreazza, A

Andrieux, ML

Antilogus, P

Apel, WD

Asman, B

Augustin, JE

Augustinus, A

Baillon, P

Bambade, P

Barao, F

Barate, R

Barbi, M

Bardin, DY

Barker, G

Baroncelli, A

Barring, O

Barrio, JA

Bartl, W

Bates, MJ

Battaglia, M

Baubillier, M

Baudot, J

Becks, KH

Begalli, M

Beilliere, P

Belokopytov, Y

Belous, K

Benvenuti, AC

Berggren, M

Bertini, D

Bertrand, D

Besancon, M

Bianchi, F

Bigi, M

Bilenky, MS

Billoir, P

Bizouard, MA

Bloch, D

Blume, M

Bolognese, T

机构：

[1] IOWA STATE UNIV,DEPT PHYS & ASTRON,AMES,IA 50011

[2] UNIV INSTELLING ANTWERP,DEPT PHYS,B-2610 WILRIJK,BELGIUM

[3] FREE UNIV BRUSSELS,IIHE,B-1050 BRUSSELS,BELGIUM

[4] UNIV MONS,FAC SCI,B-7000 MONS,BELGIUM

[5] UNIV ATHENS,PHYS LAB,GR-10680 ATHENS,GREECE

[6] UNIV BERGEN,DEPT PHYS,N-5007 BERGEN,NORWAY

[7] UNIV BOLOGNA,DIPARTIMENTO FIS,I-40126 BOLOGNA,ITALY

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

[9] CTR BRASILEIRO PESQUISAS FIS,BR-22290 RIO JANEIRO,BRAZIL

[10] PONTIFICIA UNIV CATOLICA RIO DE JANEIRO,DEPT FIS,BR-22453 RIO JANEIRO,BRAZIL

[11] UNIV ESTADUAL RIO DE JANEIRO,INST FIS,RIO JANEIRO,BRAZIL

[12] COMENIUS UNIV BRATISLAVA,FAC MATH & PHYS,SK-84215 BRATISLAVA,SLOVAKIA

[13] COLL FRANCE,PHYS CORPUSCULAIRE LAB,CNRS,IN2P3,F-75231 PARIS 05,FRANCE

[14] CERN,CH-1211 GENEVA 23,SWITZERLAND

[15] ULP,CNRS,CTR RECH NUCL,IN2P3,F-67037 STRASBOURG,FRANCE

[16] NATL CTR SCI RES DEMOKRITOS,INST NUCL PHYS,GR-15310 ATHENS,GREECE

[17] CAS,DIV HIGH ENERGY PHYS,FZU,INST PHYS,PRAGUE 18040 8,CZECH REPUBLIC

[18] UNIV GENOA,DIPARTIMENTO FIS,I-16146 GENOA,ITALY

[19] IST NAZL FIS NUCL,I-16146 GENOA,ITALY

[20] UNIV GRENOBLE 1,INST SCI NUCL,CNRS,IN2P3,F-38026 GRENOBLE,FRANCE

[21] SEFT,RES INST HIGH ENERGY PHYS,FIN-00014 HELSINKI,FINLAND

[22] JOINT INST NUCL RES DUBNA,MOSCOW 101000,RUSSIA

[23] UNIV KARLSRUHE,INST EXPT KERNPHYS,D-76128 KARLSRUHE,GERMANY

[24] INST NUCL PHYS,PL-30055 KRAKOW,POLAND

[25] UNIV MIN & MET KRAKOW,PL-30055 KRAKOW,POLAND

[26] UNIV PARIS 11,ACCELERATEUR LINEAIRE LAB,CNRS,IN2P3,F-91405 ORSAY,FRANCE

[27] UNIV LANCASTER,SCH PHYS & CHEM,LANCASTER LA1 4YB,ENGLAND

[28] UNIV LIVERPOOL,DEPT PHYS,LIVERPOOL L69 3BX,MERSEYSIDE,ENGLAND

[29] UNIV PARIS 06,LPNHE,CNRS,IN2P3,F-75252 PARIS 05,FRANCE

[30] UNIV PARIS 07,F-75252 PARIS 05,FRANCE

[31] LUND UNIV,DEPT PHYS,S-22363 LUND,SWEDEN

[32] UNIV LYON 1,IPNL,CNRS,IN2P3,F-69622 VILLEURBANNE,FRANCE

[33] UNIV COMPLUTENSE,E-28040 MADRID,SPAIN

[34] UNIV AIX MARSEILLE 2,CPP,CNRS,IN2P3,F-13288 MARSEILLE 09,FRANCE

[35] UNIV MILAN,DIPARTIMENTO FIS,I-20133 MILAN,ITALY

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

[37] NIELS BOHR INST,DK-2100 COPENHAGEN O,DENMARK

[38] CHARLES UNIV,NC,NUCL CTR MFF,AREAL MFF,CR-18000 PRAGUE 8,CZECH REPUBLIC

[39] NIKHEF,NL-1009 DB AMSTERDAM,NETHERLANDS

[40] NATL TECH UNIV ATHENS,DEPT PHYS,GR-15773 ATHENS,GREECE

[41] UNIV OSLO,DEPT PHYS,N-1000 OSLO 3,NORWAY

[42] UNIV OVIEDO,DEPT FIS,OVIEDO 33006,SPAIN

[43] UNIV OXFORD,DEPT PHYS,OXFORD OX1 3RH,ENGLAND

[44] UNIV PADUA,DIPARTIMENTO FIS,I-35131 PADUA,ITALY

[45] IST NAZL FIS NUCL,I-35131 PADUA,ITALY

[46] RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND

[47] UNIV ROMA TOR VERGATA,DIPARTIMENTO FIS,I-00173 ROME,ITALY

[48] IST NAZL FIS NUCL,I-00173 ROME,ITALY

[49] CTR ETUD SACLAY,CEA,DAPNIA,SERV PHYS PARTICULES,F-91191 GIF SUR YVETTE,FRANCE

[50] IST NAZL FIS NUCL,IST SUPER SANITA,I-00161 ROME,ITALY

来源：

PHYSICS LETTERS B | 1997年 / 393卷 / 1-2期

关键词：

D O I：

10.1016/S0370-2693(96)01618-8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A search with the DELPHI detector at LEP for excited leptons (e*, mu*, tau* and nu*) decaying through gamma, W or Z transitions is reported. The data used correspond to an integrated luminosity of 10 pb(-1) e(+)e(-) centre-of-mass energy at an e of 161 GeV. The search for pair produced excited leptons established the limits m(e)* > 79.6 GeV/c(2), m(mu)* > 79.6 GeV/c(2), m(tau)* 79.4 GeV/c(2) and m(nu)* > 56.4 GeV/c(2) at 95% confidence level, assuming that the SU(2) and U(I) couplings of excited leptons are in the same ratio as for normal leptons and considering both left and right-handed components. Limits corresponding to other assumptions are also given. The search for single excited lepton production established upper limits on the ratio lambda/m(l)* of the coupling of the excited lepton to its mass.

引用

页码：245 / 260

页数：16

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