MEASUREMENT OF THE POLARIZATION OF TAU LEPTONS PRODUCED IN Z-DECAYS

被引：51

作者：

DECAMP, D ^{[1
]}

DESCHIZEAUX, B

GOY, C

LEES, JP

MINARD, MN

ALEMANY, R

CRESPO, JM

DELFINO, M

FERNANDEZ, E

GAITAN, V

GARRIDO, L

MIR, LM

PACHECO, A

CATANESI, MG

CREANZA, D

DE PALMA, M

FARILLA, A

IASELLI, G

MAGGI, G

MAGGI, M

NATALI, S

NUZZO, S

QUATTROMINI, M

RANIERI, A

RASO, G

ROMANO, F

RUGGIERI, F

SELVAGGI, G

SILVESTRIS, L

TEMPESTA, P

ZITO, G

GAO, Y

HU, H

HUANG, D

HUANG, X

LIN, J

LOU, J

QIAO, C

RUAN, T

WANG, T

XIE, Y

XU, D

XU, R

ZHANG, J

ZHAO, W

ATWOOD, WB

BAUERDICK, LAT

BIRD, F

BLUCHER, E

BONVICINI, G

机构：

[1] CNRS, IN2P3, LAB PHYS PARTICULES LAP, F-74019 ANNECY LE VIEUX, FRANCE

[2] UNIV AUTONOMA BARCELONA, LAB FIS ALTA ENERGIES, E-08193 BELLATERRA, BARCELONA, SPAIN

[3] IST NAZL FIS NUCL, SEZ BARI, I-70126 BARI, ITALY

[4] UNIV BARI, DIPARTIMENTO FIS, I-70126 BARI, ITALY

[5] ACAD SINICA, INST HIGH ENERGY PHYS, BEIJING, PEOPLES R CHINA

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

[7] UNIV BLAISE PASCAL, LAB PHYS CORPUSCULAIRE, F-63177 AUBIERE, FRANCE

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

[9] NUCL RES CTR DEMOKRITOS NRCD, ATHENS, GREECE

[10] ECOLE POLYTECH, CNRS, IN2P3, LAB PHYS NUCL & HAUTES ENERGIES, F-91128 PALAISEAU, FRANCE

[11] UNIV EDINBURGH, DEPT PHYS, EDINBURGH EH9 3JZ, ENGLAND

[12] UNIV FIRENZE, DIPARTIMENTO FIS, I-50125 FLORENCE, ITALY

[13] IST NAZL FIS NUCL, SEZ FIRENZE, I-50125 FLORENCE, ITALY

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

[15] FLORIDA STATE UNIV, DEPT PHYS, TALLAHASSEE, FL 32306 USA

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

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

[18] UNIV HEIDELBERG, INST HOCHENERGIEPHYS, D-6900 HEIDELBERG, GERMANY

[19] IMPERIAL COLL, DEPT PHYS, LONDON SW7 2BZ, ENGLAND

[20] UNIV INNSBRUCK, INST EXPT PHYS, A-6020 INNSBRUCK, AUSTRIA

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

[22] UNIV MAINZ, INST PHYS, D-6500 MAINZ, GERMANY

[23] CNRS, IN2P3, FAC SCI LUMINY, CTR PHYS PARTICULES, F-13288 MARSEILLE, FRANCE

[24] WERNER HEISENBERG INST PHYS, MAX PLANCK INST PHYS & ASTROPHYS, D-8000 MUNICH, GERMANY

[25] UNIV PARIS SUD, CNRS, IN2P3, LAB ACCELERATEUR LINEAIRE, F-91405 ORSAY, FRANCE

[26] UNIV PISA, DIPARTIMENTO FIS, INFN, SEZ PISA, I-56010 PISA, ITALY

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

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

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

[30] CEN SACLAY, DEPT PHYS PARTICULES ELEMENTAIRES, F-91191 GIF SUR YVETTE, FRANCE

[31] UNIV SHEFFIELD, DEPT PHYS, SHEFFIELD S3 7RH, ENGLAND

[32] UNIV SIEGEN, FACHBEREICH PHYS, D-5900 SIEGEN, GERMANY

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

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

[35] UNIV WISCONSIN, DEPT PHYS, MADISON, WI 53706 USA

来源：

PHYSICS LETTERS B | 1991年 / 265卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(91)90079-6

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The polarization of tau-leptons produced in the reaction e+e- --> tau+tau- at the Z resonance has been measured using the tau-decay modes e-nu-e-nu-tau, mu-nu-mu-nu-tau, pi-nu-tau, rho-nu-tau, and a1-nu-tau. The mean value obtained is P-tau = -0.152 +/- 0.045, indicating that parity is violated in the neutral current process e+e- --> tau+tau-. The result corresponds to a ratio of the neutral current vector and axial vector coupling constants of the tau-lepton g(V-tau)(M(Z)2)/g(A-tau)(M(Z)2) = 0.076 +/- 0.023 and a value of the electroweak mixing parameter sin2 theta-W(M(Z)2) = 0.2302 +/- 0.0058.

引用

页码：430 / 444

页数：15

共 22 条

[1] DETERMINATION OF THE TAU-NEUTRINO HELICITY [J].

ALBRECHT, H .

PHYSICS LETTERS B, 1990, 250 (1-2) :164-171

[2] THE COMBINED RESPONSE OF THE ALEPH ELECTROMAGNETIC AND HADRONIC CALORIMETER TO PIONS [J].

BAGLIESI, G ;

BALDINI, R ;

BATIGNANI, G ;

BENCIVENNI, G ;

BOLOGNA, G ;

BOSSI, F ;

BOTTIGLI, U ;

BRADASCHIA, C ;

CAMPANA, P ;

CAPON, G ;

CATANESI, MG ;

CHIARELLA, V ;

CLIFFT, R ;

COMBLEY, F ;

DENINNO, G ;

DEPALMA, M ;

DETTORREPIAZZOLI, B ;

DINSDALE, M ;

EDGECOCK, R ;

EDWARDS, M ;

FARILLA, A ;

FELICI, G ;

FOA, L ;

GIASSI, A ;

GREEN, M ;

HEARNS, J ;

IASELLI, G ;

JONES, T ;

LAURELLI, P ;

LIGABUE, F ;

LYNCH, JG ;

MAGGI, G ;

MANNOCCHI, G ;

MARCH, P ;

MASTROGIACOMO, A ;

MEDCALF, T ;

MCKEMEY, A ;

MESSINEO, A ;

MINARD, MN ;

MORRISSEY, M ;

MURTAS, F ;

MURTAS, GP ;

NATALI, S ;

NICOLETTI, G ;

NORTON, P ;

NUZZO, S ;

PEPE, M ;

PICCHI, P ;

RAINE, C ;

RANIERI, A .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1990, 286 (1-2) :61-68

[3] BHABHA SCATTERING WITH HIGHER-ORDER WEAK LOOP CORRECTIONS [J].

BARDIN, D ;

HOLLIK, W ;

RIEMANN, T .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1991, 49 (03) :485-490

[4] PARITY VIOLATION IN ATOMIC BISMUTH [J].

BARKOV, LM ;

ZOLOTOREV, MS .

PHYSICS LETTERS B, 1979, 85 (2-3) :308-313

[5]

BARKOV LM, 1978, JETP LETT, V31, P357

[6] TAU-BRANCHING RATIOS AND POLARIZATION LIMITS IN E+E-INTERACTIONS AT SQUARE-ROOT S=34 GEV [J].

BEHREND, HJ ;

CHEN, C ;

BEHREND, HJ ;

FENNER, H ;

GUMPEL, U ;

SCHACHTER, MJ ;

SCHRODER, V ;

SINDT, H ;

DAGOSTINI, G ;

APEL, WD ;

BANERJEE, S ;

BODENKAMP, J ;

ENGLER, J ;

FLUGGE, G ;

FRIES, DC ;

FUES, W ;

GAMERDINGER, K ;

HOPP, G ;

KUSTER, H ;

MULLER, H ;

RANDOLL, H ;

SCHMIDT, G ;

SCHNEIDER, H ;

DEBOER, W ;

BUSCHHORN, G ;

GRINDHAMMER, G ;

GROSSEWIESMANN, P ;

GUNDERSON, B ;

KIESLING, C ;

KOTTHAUS, R ;

KRUSE, U ;

LIERL, H ;

LUERS, D ;

OBERLACK, H ;

SCHACHT, P ;

COLAS, P ;

CORDIER, A ;

DAVIER, M ;

FOURNIER, D ;

GRIVAZ, JF ;

HAISSINSKI, J ;

JOURNE, V ;

KLARSFELD, A ;

LAPLANCHE, F ;

MALLIK, U ;

VEILLET, JJ ;

FIELD, JH ;

GEORGE, R ;

GOLDBERG, M ;

GROSSETETE, B .

PHYSICS LETTERS B, 1983, 127 (3-4) :270-276

[7]

CONSOLI M, 1989, Z PHYSICS LEP 1, V1, P7

[8] HEAVY FLAVOR PRODUCTION IN Z DECAYS [J].

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 .

PHYSICS LETTERS B, 1990, 244 (3-4) :551-565

[9] ALEPH - A DETECTOR FOR ELECTRON-POSITRON ANNIHILATIONS AT LEP [J].

DECAMP, D ;

DESCHIZEAUX, B ;

LEES, JP ;

MINARD, MN ;

CRESPO, JM ;

DELFINO, M ;

FERNANDEZ, E ;

MARTINEZ, M ;

MIQUEL, R ;

MIR, LM ;

ORTEU, S ;

PACHECO, A ;

PERLAS, JA ;

TUBAU, E ;

CATANESI, MG ;

DEPALMA, M ;

FARILLA, A ;

IASELLI, G ;

MAGGI, G ;

MASTROGIACOMO, A ;

NATALI, S ;

NUZZO, S ;

RANIERI, A ;

RASO, G ;

ROMANO, F ;

RUGGIERI, F ;

SELVAGGI, G ;

SILVESTRIS, L ;

TEMPESTA, P ;

ZITO, G ;

CHEN, Y ;

HU, H ;

HUANG, D ;

JIANG, Y ;

LIN, J ;

LIU, R ;

LU, W ;

RUAN, T ;

WANG, T ;

WANG, X ;

WU, D ;

WU, W ;

XIE, Y ;

XU, D ;

XU, R ;

XU, Y ;

YAN, W ;

YE, M ;

ZHANG, J ;

ZHAO, H .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1990, 294 (1-2) :121-178

[10]

DECAMP D, UNPUB Z PHYS C

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