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
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
收藏
页码:245 / 260
页数:16
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