MEASUREMENT OF THE TAU--]H-PI(0)NU-TAU AND TAU--]H-GREATER-THAN-OR-EQUAL-TO-2-PI(0)NU-TAU BRANCHING RATIOS

被引：16

作者：

AKERS, R

ALEXANDER, G

ALLISON, J

ANDERSON, KJ

ARCELLI, S

ASTBURY, A

AXEN, D

AZUELOS, G

BALL, AH

BARLOW, RJ

BARNETT, S

BARTOLDUS, R

BATLEY, JR

BEAUDOIN, G

BECK, A

BECK, GA

BECKER, J

BEESTON, C

BEHNKE, T

BELL, KW

BELLA, G

BENTKOWSKI, P

BERLICH, P

BETHKE, S

BIEBEL, O

BLOODWORTH, IJ

BOCK, P

BODEN, B

BOSCH, HM

BOUTEMEUR, M

BRIGHTTHOMAS, P

BROWN, RM

BUIJS, A

BURCKHART, HJ

BURGARD, C

CAPILUPPI, P

CARNEGIE, RK

CARTER, AA

CARTER, JR

CHANG, CY

CHARLESWORTH, C

CHARLTON, DG

CHU, SL

CLARKE, PEL

CLAYTON, JC

COHEN, I

CONBOY, JE

COOPER, M

COUPLAND, M

CUFFIANI, M

机构：

[1] UNIV BIRMINGHAM,SCH PHYS & SPACE RES,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND

[2] UNIV BOLOGNA,DIPARTIMENTO FIS,I-40126 BOLOGNA,ITALY

[3] INFN,I-40126 BOLOGNA,ITALY

[4] UNIV BONN,INST PHYS,D-53115 BONN,GERMANY

[5] UNIV CALIF RIVERSIDE,DEPT PHYS,RIVERSIDE,CA 92521

[6] UNIV CAMBRIDGE,CAVENDISH LAB,CAMBRIDGE CB3 0HE,ENGLAND

[7] CARLETON UNIV,DEPT PHYS,OTTAWA K1S 5B6,ONTARIO,CANADA

[8] CARLETON UNIV,CTR RES PARTICLE PHYS,OTTAWA K1S 5B6,ONTARIO,CANADA

[9] CERN,EUROPEAN ORG PARTICLE PHYS,CH-1211 GENEVA 23,SWITZERLAND

[10] UNIV CHICAGO,ENRICO FERMI INST,CHICAGO,IL 60637

[11] UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637

[12] ALBERT LUDWIGS UNIV,FAK PHYS,D-79104 FREIBURG,GERMANY

[13] UNIV HEIDELBERG,INST PHYS,D-69120 HEIDELBERG,GERMANY

[14] INDIANA UNIV,DEPT PHYS,BLOOMINGTON,IN 47405

[15] UNIV LONDON,QUEEN MARY & WESTFIELD COLL,LONDON E1 4NS,ENGLAND

[16] BIRBECK COLL,LONDON WC1E 7HV,ENGLAND

[17] UNIV LONDON UNIV COLL,LONDON WC1E 6BT,ENGLAND

[18] UNIV MARYLAND,DEPT PHYS,COLL PK,MD 20742

[19] UNIV MONTREAL,PHYS NUCL LAB,MONTREAL H3C 3J7,QUEBEC,CANADA

[20] UNIV OREGON,DEPT PHYS,EUGENE,OR 97403

[21] RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND

[22] SPP,DAPNIA,F-91191 GIT YVETTE,FRANCE

[23] TECHNION ISRAEL INST TECHNOL,DEPT PHYS,IL-32000 HAIFA,ISRAEL

[24] TEL AVIV UNIV,DEPT PHYS & ASTRON,IL-69978 TEL AVIV,ISRAEL

[25] UNIV TOKYO,DEPT PHYS,TOKYO 113,JAPAN

[26] UNIV TOKYO,INT CTR ELEMENTARY PARTICLE PHYS,TOKYO 113,JAPAN

[27] KOBE UNIV,KOBE 657,JAPAN

[28] BRUNEL UNIV,UXBRIDGE UB8 3PH,MIDDX,ENGLAND

[29] WEIZMANN INST SCI,DEPT PARTICLE PHYS,IL-76100 REHOVOT,ISRAEL

[30] UNIV MAMBURY,DESY,INST EXPTL PHYS 2,D-22607 HAMBURG,GERMANY

[31] UNIV VICTORIA,DEPT PHYS,VICTORIA V8W 3P6,BC,CANADA

[32] UNIV BRITISH COLUMBIA,DEPT PHYS,VANCOUVER V6T 1Z1,BC,CANADA

[33] UNIV ALBERTA,DEPT PHYS,EDMONTON T6G 2J1,ALBERTA,CANADA

[34] DUKE UNIV,DEPT PHYS,DURHAM,NC 27708

[35] UNIV AACHEN,INST PHYS 3,D-52056 AACHEN,GERMANY

[36] TRIUMF,VANCOUVER V6T 2A3,BC,CANADA

来源：

PHYSICS LETTERS B | 1994年 / 328卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(94)90452-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The branching ratios of the tau- --> h- pi0nu(tau) and tau- --> h- greater-than-or-equal-to 2pi0nu(tau) decays (where h- is either a pi- or K-) are measured using the OPAL detector at LEP. The two branching ratios are simultaneously measured using separate selection criteria and are found to be B(h-pi0) = (26.25 +/- 0.36 +/- 0.52) %, B(h- greater-than-or-equal-to 2pi0) = (9.89 +/- 0.34 +/- 0.55)%, B(h- pi0) + B(h- greater-than-or-equal-to 2pi0) = (36.14 +/- 0.33 +/-0.58) %, where the first error is statistical and the second is systematic.

引用

页码：207 / 222

页数：16

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