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

Authors
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 YOST GP ZAPALAC G
Citation
Da. Bauer et al., MEASUREMENT OF THE KAON CONTENT OF 3-PRONG TAU-DECAYS, Physical review. D. Particles and fields, 50(1), 1994, pp. 13-17
Citations number
13
Categorie Soggetti
Physics, Particles & Fields
Journal title
Physical review. D. Particles and fields → ACNP
ISSN journal
05562821
Volume
50
Issue
1
Year of publication
1994
Pages
13 - 17
Database
ISI
SICI code
0556-2821(1994)50:1<13:MOTKCO>2.0.ZU;2-F
Abstract
We present branching fraction measurements of three-prong decays of th e tau- lepton based on data from the TPC/Two-Gamma detector at SLAC PE P. The decays are classified according to the identities of the charge d tracks to give simultaneous measurements of B[tau- --> nu(tau)K-pi+p i-]=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 a dditional neutrals may be present in each case. The branching fraction s are normalized to the world average three-prong topological branchin g fraction and there is an estimated 20% systematic error in addition to the listed statistical errors. We find the mass distributions in th e K-pi+pi- decay are consistent with K1 dominance, and obtain branchin g fractions of B[tau- --> nu(tau)K1-(1270)]=0.41(-0.35)+0.41% and B[ta u- --> nu(tau)K1-(1400)]=0.76(-0.33)+0.40%