MEASUREMENT OF THE KAON CONTENT OF 3-PRONG TAU-DECAYS

被引：21

作者：

BAUER, DA

BELCINSKI, R

BERG, RC

BINGHAM, HH

BLOOM, ED

BUCHANAN, CD

CALDWELL, DO

CHUN, SB

CLARK, AR

DAHL, OI

EASTMAN, JJ

EBERHARD, PH

EISNER, AM

FAIRFIELD, KH

GODFREY, G

GREENBAUM, GS

HAUPTMAN, JM

HOFMANN, W

HOLTZAPPLE, RL

KHACHERYAN, S

KNOPFLE, KT

KOFLER, RR

LAMBERT, DJ

LOKEN, SC

LU, A

LYNCH, GR

LYS, JE

MADARAS, RJ

MARSISKE, H

MASEK, GE

MILLER, ES

NICOL, NA

NYGREN, DR

OYANG, YT

PAAR, HP

PALOUNEK, APT

PELLETT, DE

RONAN, MT

ROSS, RR

SHAPIRO, G

STEPHENS, RW

STEVENSON, ML

STRAUSS, MG

SULLIVAN, MK

VERNON, W

WANG, EM

WANG, YX

WENZEL, WA

YAMAMOTO, H

YELLIN, SJ

机构：

[1] UNIV CALIF DAVIS,DAVIS,CA 95616

[2] UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024

[3] UNIV CALIF SAN DIEGO,LA JOLLA,CA 92093

[4] UNIV CALIF SANTA BARBARA,SANTA BARBARA,CA 93106

[5] LAWRENCE BERKELEY LAB,BERKELEY,CA 94720

[6] IOWA STATE UNIV SCI & TECHNOL,AMES,IA 50011

[7] UNIV CALIF INTERCAMPUS INST RES PARTICLE ACCELERATORS,STANFORD,CA 94305

[8] STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309

[9] UNIV MASSACHUSETTS,AMHERST,MA 01003

[10] MAX PLANCK INST NUCL PHYS,W-6900 HEIDELBERG 1,GERMANY

来源：

PHYSICAL REVIEW D | 1994年 / 50卷 / 01期

关键词：

D O I：

10.1103/PhysRevD.50.R13

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present branching fraction measurements of three-prong decays of the tau- lepton based on data from the TPC/Two-Gamma detector at SLAC PEP. The decays are classified according to the identities of the charged tracks to give simultaneous measurements of B[tau- --> nu(tau)K-pi+pi-]=0.58(-0.13)+0.15% and B[tau- --> nu(tau)K-K+pi-]=0.15+0.15(-0.07)+0.09)%, and upper limits of B[tau- --> nu(tau)pi-K+pi-]<0.25% B[tau- --> nu(tau)K-pi+K-]<0.09%, and B[tau- --> nu(tau)K-K+K-]<0.21%, where additional neutrals may be present in each case. The branching fractions are normalized to the world average three-prong topological branching fraction and there is an estimated 20% systematic error in addition to the listed statistical errors. We find the mass distributions in the K-pi+pi- decay are consistent with K1 dominance, and obtain branching fractions of B[tau- --> nu(tau)K1-(1270)]=0.41(-0.35)+0.41% and B[tau- --> nu(tau)K1-(1400)]=0.76(-0.33)+0.40%

引用

页码：R13 / R17

页数：5

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