SEARCH FOR NEUTRALINO PRODUCTION IN Z DECAYS

被引：41

作者：

DECAMP, D

DESCHIZEAUX, B

GOY, C

LEES, JP

MINARD, MN

CRESPO, JM

DELFINO, M

FERNANDEZ, E

MATO, P

MIQUEL, R

MIR, LM

ORTEU, S

PACHECO, A

PERLAS, JA

TUBAU, E

CATANESI, MG

DEPALMA, M

FARILLA, A

IASELLI, G

MAGGI, G

NATALI, S

NUZZO, S

RANIERI, A

RASO, G

ROMANO, F

RUGGIERI, F

SELVAGGI, G

SILVESTRIS, L

TEMPESTA, P

ZITO, G

GAO, Y

HU, H

HUANG, D

JIN, S

LIN, J

RUAN, T

WANG, T

WU, W

XIE, Y

XU, D

XU, R

ZHANG, J

ZHANG, Z

ZHAO, W

ALBRECHT, H

ATWOOD, WB

BIRD, F

BLUCHER, E

BROWN, D

BURNETT, TH

机构：

[1] UNIV AUTONOMA BARCELONA,FIS ALTAS ENERGIAS LAB,E-08193 BARCELONA,SPAIN

[2] UNIV BARI,IST NATL FIZ NUCL,I-70126 BARI,ITALY

[3] UNIV BARI,DEPARTIMENTO FIS,I-70126 BARI,ITALY

[4] CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

[5] CERN,EUROPEAN LAB PARTICLE PHYS,CH-1211 GENEVA 23,SWITZERLAND

[6] UNIV CLERMONT FERRAND,INST NATL PHYS NUCL & PHYS PARTICULES,CNRS,F-63177 CLERMONT FERRAND,FRANCE

[7] NIELS BOHR INST,DK-2100 COPENHAGEN,DENMARK

[8] DEMOCRITOS NUCL RES CTR,ATHENS,GREECE

[9] CNRS,ECOLE POLYTECH,INST NATL PHYS NUCL & PHYS PARTICULES,PHYS NUCL & HAUTES ENERGIES LAB,F-91128 PALAISEAU,FRANCE

[10] UNIV EDINBURGH,DEPT PHYS,EDINBURGH EH9 3JZ,MIDLOTHIAN,SCOTLAND

[11] UNIV FLORENCE,DEPARTIMENTO FIS,I-50125 FLORENCE,ITALY

[12] IST NAZL FIS NUCL,I-50125 FLORENCE,ITALY

[13] FLORIDA STATE UNIV,SUPERCOMP COMPUTAT RES INST,TALLAHASSEE,FL 32306

[14] FLORIDA STATE UNIV,DEPT PHYS,TALLAHASSEE,FL 32306

[15] IST NAZL FIS NUCL,NAZL LAB,I-00044 FRASCATI,ITALY

[16] UNIV GLASGOW,DEPT PHYS & ASTRON,GLASGOW G12 8QQ,SCOTLAND

[17] UNIV HEIDELBERG,INST HOCHENERGIEPHYS,W-6900 HEIDELBERG,GERMANY

[18] UNIV LONDON IMPERIAL COLL SCI & TECHNOL,DEPT PHYS,LONDON SW7 2BZ,ENGLAND

[19] UNIV INNSBRUCK,INST EXPTL PHYS,A-6020 INNSBRUCK,AUSTRIA

[20] UNIV LANCASTER,DEPT PHYS,LANCASTER LA1 4YB,ENGLAND

[21] UNIV MAINZ,INST PHYS,W-6500 MAINZ,GERMANY

[22] FAC SCI LUMINY,CNRS,CTR PHYS PARTICULES,INST NATL PHYS NUCL & PHYS PARTICULES,F-13288 MARSEILLE,FRANCE

[23] MAX PLANCK INST PHYS & ASTROPHYS,WERNER HEISENBERG INST PHYSIK,W-8000 MUNICH 40,GERMANY

[24] UNIV PARIS 11,CNRS,INST NATL PHYS NUCL & PHYS PARTICULES,ACCELERATEUR LINEAIRE LAB,F-91405 ORSAY,FRANCE

[25] UNIV PISA,INST NATL PHYS NUCL & PHYS PARTICULES,DIPARTIMENTO FIS,I-56010 PISA,ITALY

[26] SCUOLA NORMALE SUPER PISA,I-56010 PISA,ITALY

[27] UNIV LONDON,ROYAL HOLLOWAY & BEDFORD NEW COLL,DEPT PHYS,LONDON TW20 0EX,SURREY,ENGLAND

[28] RUTHERFORD APPLETON LAB,DEPT PARTICLE PHYS,DIDCOT OX11 0QX,OXON,ENGLAND

[29] CENS,DEPT PHYS PARTICULES ELEMENTAIRE,F-91191 GIF SUR YVETTE,FRANCE

[30] UNIV SHEFFIELD,DEPT PHYS,SHEFFIELD S3 7RH,S YORKSHIRE,ENGLAND

[31] UNIV SIEGEN,FACHBEREICH PHYS,W-5900 SIEGEN,GERMANY

[32] IST NAZL FIS NUCL,I-34127 TRIESTE,ITALY

[33] UNIV TRIESTE,DEPARTIMENTO FIS,I-34127 TRIESTE,ITALY

[34] UNIV WISCONSIN,DEPT PHYS,MADISON,WI 53706

来源：

PHYSICS LETTERS B | 1990年 / 244卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(90)90361-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Limits on Z decay branching ratios into neutralinos are reported. They were obtained from searches for monojets, acoplanar jets, acoplanar lepton pairs, single photons and acoplanar photon pairs as signaturs for the reactions e+e- → χχ′ and e+e- → χχ′, where χ is the lightest neutralino and χ′ any heavier one. The data sample used for these searches corresponds to about 23 000 events of Z decay into multihadrons, collected at LEP by the ALEPH detector for centre of mass energies at and near the Z peak. The results obtained are used to restrict the parameter space of the minimal supersymmetric standard model. © 1990.

引用

页码：541 / 550

页数：10

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