Authors

D. Cronin-Hennessy
A. L. Lyon
C. S. Park
W. Park
J. B. Thayer
E. H. Thorndike
T. E. Coan
Y. S. Gao
F. Liu
Y. Maravin
R. Stroynowski
M. Artuso
C. Boulahouache
S. Blusk
K. Bukin
E. Dambasuren
R. Mountain
G. C. Moneti
H. Muramatsu
R. Nandakumar
T. Skwarnicki
S. Stone
J. C. Wang
A. H. Mahmood
S. E. Csorna
I. Danko
G. Bonvicini
D. Cinabro
M. Dubrovin
S. McGee
A. Bornheim
E. Lipeles
S. P. Pappas
A. Shapiro
W. M. Sun
A. J. Weinstein
R. A. Briere
G. P. Chen
T. Ferguson
G. Tatishvili
H. Vogel
N. E. Adam
J. P. Alexander
K. Berkelman
V. Boisvert
D. G. Cassel
P. S. Drell
J. E. Duboscq
K. M. Ecklund
R. Ehrlich
R. S. Galik
L. Gibbons
B. Gittelman
S. W. Gray
D. L. Hartill
B. K. Heltsley
L. Hsu
C. D. Jones
J. Kandaswamy
D. L. Kreinick
A. Magerkurth
H. Mahlke-Kruger
T. O. Meyer
N. B. Mistry
E. Nordberg
J. R. Patterson
D. Peterson
J. Pivarski
S. J. Richichi
D. Riley
A. J. Sadoff
H. Schwarthoff
M. R. Shepherd
J. G. Thayer
D. Urner
T. Wilksen
A. Warburton
M. Weinberger
S. B. Athar
P. Avery
L. Breva-Newell
V. Potlia
H. Stoeck
J. Yelton
K. Benslama
B. I. Eisenstein
G. D. Gollin
I. Karliner
N. Lowrey
C. Plager
C. Sedlack
M. Selen
J. J. Thaler
J. Williams
K. W. Edwards
R. Ammar
D. Besson
X. Zhao
S. Anderson
V. V. Frolov
D. T. Gong
Y. Kubota
S. Z. Li
R. Poling
A. Smith
C. J. Stepaniak
J. Urheim
Z. Metreveli
K. K. Seth
A. Tomaradze
P. Zweber
S. Ahmed
M. S. Alam
J. Ernst
L. Jian
M. Saleem
F. Wappler
K. Arms
E. Eckhart
K. K. Gan
C. Gwon
T. Hart
K. Honscheid
D. Hufnagel
H. Kagan
R. Kass
T. K. Pedlar
E. von Toerne
M. M. Zoeller
H. Severini
P. Skubic
S. A. Dytman
J. A. Mueller
S. Nam
V. Savinov
S. Chen
J. W. Hinson
J. Lee
D. H. Miller
V. Pavlunin
E. I. Shibata
I. P. J. Shipsey

Published in:

Physical Review D 67,1 (2003) 012001;

Abstract

Using data collected by the CLEO III detector at CESR, we report on the first observation of the decays Lambda(c)(+)-->Lambdapi(+)pi(+)pi(-)pi(0) and Lambda(c)(+)-->Lambdaomegapi(+). The branching fractions are measured relative to the pK(-)pi(+) mode; we find B(Lambda(c)(+)-->Lambdapi(+)pi(+)pi(-)pi(0))/B(Lambda(c)(+)-->pK(-)pi(+))=0.36+/-0.09(stat)+/-0.09(syst) and B(Lambda(c)(+)-->Lambdaomegapi(+))/B(Lambda(c)(+)-->pK(-)pi(+))=0.24+/-0.06(stat)+/-0.06(syst). We also observe a small excess of events in Lambda(c)(+)-->Lambdaetapi(+), eta-->pi(+)pi(-)pi(0) from which we find B(Lambda(c)(+)-->Lambdaetapi(+))/B(Lambda(c)(+)-->pK(-)pi(+))=0.41+/-0.17+/-0.10 with a corresponding limit of <0.65% at 90% confidence level. This rate is consistent with previous measurements of Lambda(c)(+)-->Lambdaetapi(+), eta-->gammagamma. We find that the combined branching fractions for Lambda(c)(+)-->Lambdaomegapi(+) and Lambda(c)(+)-->Lambdaetapi(+) comprise (87+/-13)% of the total Lambda(c)(+)-->Lambdapi(+)pi(+)pi(-)pi(0) rate. We set an upper limit on B(Lambda(c)(+)-->Lambdapi(+)pi(+)pi(-)pi(0))/B(Lambda(c)(+)-->pK(-)pi(+)) for non-omega and non-eta modes of 0.13 at 90% confidence level.

Keywords

detector;; physics

Date of this Version

January 2003

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