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

来源：

PHYSICS LETTERS B | 1996年 / 385卷 / 1-4期

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

页码：445 / 453

页数：9

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