K. W. Edwards
D. Besson
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
K. Honscheid
H. Kagan
R. Kass
T. K. Pedlar
E. von Toerne
H. Severini
P. Skubic
S. A. Dytman
J. A. Mueller
S. Nam
V. Savinov
J. W. Hinson
G. S. Huang
J. Lee
D. H. Miller
V. Pavlunin
B. Sanghi
E. I. Shibata
I. P. J. Shipsey
D. Cronin-Hennessy
C. S. Park
W. Park
J. B. Thayer
E. H. Thorndike
T. E. Coan
Y. S. Gao
F. Liu
R. Stroynowski
M. Artuso
C. Boulahouache
S. Blusk
E. Dambasuren
O. Dorjkhaidav
R. Mountain
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
M. E. Watkins
N. E. Adam
J. P. Alexander
K. Berkelman
V. Boisvert
D. G. Cassel
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
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
B. I. Eisenstein
G. D. Gollin
I. Karliner
N. Lowrey
C. Plager
C. Sedlack
M. Selen
J. J. Thaler
J. Williams

Published in:

Physical Review D 68,1 (2003) 011102;


We have searched for the baryon-containing radiative penguin decays B- -->Lambda(p) over bar gamma and B--->Sigma(0)(p) over bar gamma, using a sample of 9.7x10(6) B (B) over bar events collected at the Y(4S) with the CLEO detector. We find no evidence for either, and set 90% confidence level upper limits of B(B--->Lambda(p) over bar gamma)+0.3B(B--->Sigma(0)(p) over bar gamma)](Egamma)>2.0 GeV<3.3x10(-6), [B(B--->Sigma(0)(p) over bar gamma)+0.4B(B--->Lambda(p) over bar gamma)](Egamma)>2.0 GeV<6.4x10(-6). From the latter, we estimate B(B-->X(s)gamma,X-s containing baryons)(Egamma)>2.0 GeV<3.8x10(-5). This limit implies upper limits on corrections to CLEO's recent measurement of branching fraction, mean photon energy, and variance in photon energy from b-->sgamma that are less than half the combined statistical and systematic errors quoted on these quantities.



Date of this Version

January 2003



To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.