Search for excited leptons at 130-140 GeV

被引:32
|
作者
Buskulic, D
DeBonis, I
Decamp, D
Ghez, P
Goy, C
Lees, JP
Lucotte, A
Minard, MN
Nief, JY
Odier, P
Pietrzyk, B
Casado, MP
Chmeissani, M
Crespo, JM
Delfino, M
Efthymiopoulos, I
Fernandez, E
FernandezBosman, M
Garrido, L
Juste, A
Martinez, M
Orteu, S
Padilla, C
Park, IC
Pascual, A
Perlas, JA
Riu, I
Sanchez, F
Teubert, F
Colaleo, A
Creanza, D
dePalma, M
Gelao, G
Girone, M
Iaselli, G
Maggi, G
Maggi, M
Marinelli, N
Nuzzo, S
Ranieri, A
Raso, G
Ruggieri, F
Selvaggi, G
Silvestris, L
Tempesta, P
Zito, G
Huang, X
Lin, J
Ouyang, Q
Wang, T
机构
[1] UNIV AUTONOMA BARCELONA, INST FIS ALTES ENERGIES, BELLATERRA 08193, BARCELONA, SPAIN
[2] IST NAZL FIS NUCL, DIPARTIMENTO FIS, I-70126 BARI, ITALY
[3] ACAD SINICA, INST HIGH ENERGY PHYS, BEIJING, PEOPLES R CHINA
[4] CERN, EUROPEAN LAB PARTICLE PHYS, CH-1211 GENEVA 23, SWITZERLAND
[5] UNIV CLERMONT FERRAND, LAB PHYS CORPUSCULAIRE, CNRS, IN2P3, F-63177 CLERMONT FERRAND, FRANCE
[6] NIELS BOHR INST, COPENHAGEN 2100, DENMARK
[7] DEMOCRITOS NUCL RES CTR, ATHENS, GREECE
[8] ECOLE POLYTECH, LAB PHYS NUCL & HAUTES ENERGIES, CNRS, IN2P3, F-91128 PALAISEAU, FRANCE
[9] UNIV FLORENCE, DIPARTIMENTO FIS, IST NAZL FIS NUCL, I-50125 FLORENCE, ITALY
[10] FLORIDA STATE UNIV, SUPERCOMP COMPUTAT RES INST, TALLAHASSEE, FL 32306 USA
[11] IST NAZL FIS NUCL, LAB NAZL FRASCATI, I-00044 FRASCATI, ITALY
[12] UNIV GLASGOW, DEPT PHYS & ASTRON, GLASGOW G12 8QQ, LANARK, SCOTLAND
[13] UNIV HEIDELBERG, INST HOCHENERGIEPHYS, D-69120 HEIDELBERG, GERMANY
[14] UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED, DEPT PHYS, LONDON SW7 2BZ, ENGLAND
[15] UNIV INNSBRUCK, INST EXPT PHYS, A-6020 INNSBRUCK, AUSTRIA
[16] UNIV LANCASTER, DEPT PHYS, LANCASTER LA1 4YB, ENGLAND
[17] UNIV MAINZ, INST PHYS, D-55099 MAINZ, GERMANY
[18] FAC SCI LUMINY, CTR PHYS PARTICULES, CNRS, IN2P3, F-13288 MARSEILLE, FRANCE
[19] UNIV MILAN, DIPARTIMENTO FIS, I-20133 MILAN, ITALY
[20] IST NAZL FIS NUCL, I-20133 MILAN, ITALY
[21] MAX PLANCK INST PHYS & ASTROPHYS, WERNER HEISENBERG INST, D-80805 MUNICH, GERMANY
[22] UNIV PARIS 11, ACCELERATEUR LINEAIRE LAB, CNRS, IN2P3, F-91405 ORSAY, FRANCE
[23] UNIV PISA, IST NAZL FIS NUCL, DIPARTIMENTO FIS, I-56010 PISA, ITALY
[24] SCUOLA NORMALE SUPER PISA, I-56010 PISA, ITALY
[25] UNIV LONDON ROYAL HOLLOWAY & BEDFORD NEW COLL, DEPT PHYS, EGHAM TW20 0EX, SURREY, ENGLAND
[26] RUTHERFORD APPLETON LAB, DEPT PARTICLE PHYS, DIDCOT OX11 0QX, OXON, ENGLAND
[27] CENS, CEA, SERV PHYS PARTICULES, DAPNIA, F-91191 GIF SUR YVETTE, FRANCE
[28] UNIV CALIF SANTA CRUZ, INST PARTICLE PHYS, SANTA CRUZ, CA 95064 USA
[29] UNIV SHEFFIELD, DEPT PHYS, SHEFFIELD S3 7RH, S YORKSHIRE, ENGLAND
[30] UNIV GESAMTHSCH SIEGEN, FACHBEREICH PHYS, D-57068 SIEGEN, GERMANY
[31] UNIV TRIESTE, DIPARTMENTO FIS, I-34127 TRIESTE, ITALY
[32] IST NAZL FIS NUCL, I-34127 TRIESTE, ITALY
[33] UNIV WASHINGTON, SEATTLE, WA 98195 USA
[34] UNIV WISCONSIN, DEPT PHYS, MADISON, WI 53706 USA
[35] UNIV TURIN, IST FIS GEN, TURIN, ITALY
[36] CNR, IST COSMOGEOFIS, I-10133 TURIN, ITALY
[37] UNIV BARCELONA, BARCELONA 08208, SPAIN
[38] KANGNUNG NATL UNIV, KANGNUNG, SOUTH KOREA
[39] UNIV SASSARI, IST MATEMAT & FIS, I-07100 SASSARI, ITALY
基金
中国国家自然科学基金;
关键词
D O I
10.1016/0370-2693(96)00961-6
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
A search for the radiative decay of excited charged leptons, l*, and for radiative and weak decays of excited electron neutrinos, nu(e)*, is performed, using the 5.8 pb(-1) of data collected by ALEPH at 130-140 GeV. No evidence for a signal is found in single or pair production. Excluded mass limits from pair production are close to 65 GeV/c(2) for all excited lepton species. Limits on the couplings, lambda/m(l*), of excited leptons are derived from single production. For an excited lepton mass of 130GeV/c(2), these limits are 0.04GeV(-1) for mu* and tau*, and 0.0007GeV(-1) for e*. For nu(e)*, the limit is at the level of 0.03 GeV-1 for a mass of 120 GeV/c(2), independent of the decay branching ratios.
引用
收藏
页码:445 / 453
页数:9
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