K(0) PRODUCTION IN ONE-PRONG TAU-DECAYS

被引：19

作者：

BUSKULIC, D

CASPER, D

DEBONIS, I

DECAMP, D

GHEZ, P

GOY, C

LEES, JP

MINARD, MN

ODIER, P

PIETRZYK, B

ARIZTIZABAL, F

CHMEISSANI, M

CRESPO, JM

EFTHYMIOPOULOS, I

FERNANDEZ, E

FERNANDEZBOSMAN, M

GAITAN, V

GARRIDO, L

MARTINEZ, M

MATTISON, T

ORTEU, S

PACHECO, A

PADILLA, C

PASCUAL, A

TEUBERT, F

CREANZA, D

DEPALMA, M

FARILLA, A

IASELLI, G

MAGGI, G

MARINELLI, N

NATALI, S

NUZZO, S

RANIERI, A

RASO, G

ROMANO, F

RUGGIERI, F

SELVAGGI, G

SILVESTRIS, L

TEMPESTA, P

ZITO, G

CHAI, Y

HUANG, D

HUANG, X

LIN, J

WANG, T

XIE, Y

XU, D

XU, R

ZHANG, J

机构：

[1] UNIV AUTONOMA BARCELONA, INST FIS ALTES ENERGIES, E-08193 BARCELONA, SPAIN

[2] INFN, DIPARTIMENTO FIS, I-70126 BARI, ITALY

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

[4] UNIV CLERMONT FERRAND, PHYS CORPUSCULAIRE LAB, CNRS, IN2P3, F-63177 CLERMONT FERRAND, FRANCE

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

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

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

[8] DEMOKRITOS NATL CTR SCI RES, ATHENS, GREECE

[9] UNIV WASHINGTON, SEATTLE, WA 98195 USA

[10] UNIV TURIN, IST FIS GEN, I-10124 TURIN, ITALY

[11] CNR, IST COSMOGEOFIS, TURIN, ITALY

[12] KANGNUNG NATL UNIV, KANGNUNG, SOUTH KOREA

[13] CERN, DIV PPE, CH-1211 GENEVA 23, SWITZERLAND

[14] UNIV EDINBURGH, DEPT PHYS, EDINBURGH EH8 9JZ, MIDLOTHIAN, SCOTLAND

[15] UNIV FLORENCE, INFN, DIPARTIMENTO FIS, I-50125 FLORENCE, ITALY

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

[17] INFN, LAB NAZL, I-00044 FRASCATI, ITALY

[18] UNIV HEIDELBERG, INST HOCHENERGIEPHYS, D-69120 HEIDELBERG, GERMANY

[19] UNIV MAINZ, INST PHYS, D-55099 MAINZ, GERMANY

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

[21] WERNER HEISENBERG INST, MAX PLANCK INST PHYS, D-80805 MUNICH, GERMANY

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

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

[24] UNIV SIEGEN, FACHBEREICH PHYS, D-57068 SIEGEN, GERMANY

[25] INFN, I-34127 TRIESTE, ITALY

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

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

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

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

[30] UNIV PARIS 11, ACCELERATEUR LINEAIRE LAB, CNRS, IN2P3, F-91405 ORSAY, FRANCE

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

[32] CTR ETUD SACLAY, DAPNIA, SERV PHYS PARTICULES, F-91191 GIF SUR YVETTE, FRANCE

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

[34] UNIV CALIF SANTA CRUZ, INST PARTICLE PHYS, SANTA CRUZ, CA 95064 USA

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

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

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

来源：

PHYSICS LETTERS B | 1994年 / 332卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/0370-2693(94)90882-6

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

From a sample of about 75000 tau decays identified with the ALEPH detector, K0 production in 1-prong hadronic decays is investigated by tagging the K(L)0 component in a hadronic calorimeter. Results are given for the final states nu(tau)h-K0 and nu(tau)h-pi0K0 where the h- is separated into pi and K contributions by means of the dE/dx measurement in the central detector. The resulting branching ratios are: (B(tau) --> nu(tau)pi-K0) = (0.88 +/- 0.14 +/- 0.09)%, (B(tau) --> nu(tau)K-K0) = (0.29 +/- 0.12 +/- 0.03)%, (Btau --> nu(tau)pi-pi0K0) = (0.33 +/- 0.14 +/- 0.07)% and (B(tau) --> nu(tau)K-pi0K0) = (0.05 +/- 0.05 +/- 0.01)%. The K* decay rate in the K0pi channel agrees with that in the Kpi0 mode: the combined value for the branching ratio is (Btau --> nu(tau)K*-) = (1.45 +/- 0.13 +/- 0.11)%.

引用

页码：219 / 227

页数：9

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