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
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
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
J. W. Hinson
J. Lee
D. H. Miller
V. Pavlunin
B. Sanghi
E. I. Shibata
I. P. J. Shipsey
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
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
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

Published in:

Physical Review D 68,7 (2003) 072003;


We report on determinations of \V-ub\ resulting from studies of the branching fraction and q(2) distributions in exclusive semileptonic B decays that proceed via the b-->u transition. Our data set consists of the 9.7x106B (B) over bar meson pairs collected at the Y(4S) resonance with the CLEO II detector. We measure B(B-0-->pi(-)l(+)nu)=(1.33+/-0.18+/-0.11+/-0.01+/-0.07)x10(-4) and B(B-0-->rho(-)l(+)nu)=(2.17+/-0.34(-0.54)(+0.47)+/-0.41+/-0.01)x10(-4), where the errors are statistical, experimental systematic, systematic due to residual form-factor uncertainties in the signal, and systematic due to residual form-factor uncertainties in the cross-feed modes, respectively. We also find B(B+-->etal(+)nu)=(0.84+/-0.31+/-0.16+/-0.09)x10(-4), consistent with what is expected from the B-->pilnu mode and quark model symmetries. We extract \V-ub\ using light-cone sum rules for 0less than or equal toq(2)<16 GeV2 and lattice QCD for 16 GeV(2)less than or equal toq(2)


constituent quark-model;; form-factors;; semileptonic decays;; meson decays;; pseudoscalar mesons;; unitarity bounds;; leptonic decays;; b-decays;; heavy;; lattice

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.