Study of exclusive charmless semileptonic B decays and |Vub|.
We study semileptonic B decay to the exclusive charmless states pi, rho/omega, eta, and eta;{'} using the 16 fb(-1) CLEO Upsilon(4S) data sample. We find B(B0-->pi-l+nu)=(1.37+/-0.15stat+/-0.11sys)x10(-4) and B(B0-->rho-l+nu)=(2.93+/-0.37stat+/-0.37sys)x10(-4) and find evidence for B+-->eta'l+nu, with B(B+-->eta'l+nu)=(2.66+/-0.80stat+/-0.56sys)x10(-4). From our B-->pilnu rate for q2>16 GeV2 and lattice QCD, we find |Vub|=(3.6+/0.4stat+/0.2syst-0.4thy+0.6)x10(-3) [corrected]
Adam
N E
NE
Cornell University, Ithaca, New York 14853, USA.
Alexander
J P
JP
Berkelman
K
K
Cassel
D G
DG
Duboscq
J E
JE
Ehrlich
R
R
Fields
L
L
Gibbons
L
L
Gray
R
R
Gray
S W
SW
Hartill
D L
DL
Heltsley
B K
BK
Hertz
D
D
Jones
C D
CD
Kandaswamy
J
J
Kreinick
D L
DL
Kuznetsov
V E
VE
Mahlke-Krüger
H
H
Meyer
T O
TO
Onyisi
P U E
PU
Patterson
J R
JR
Peterson
D
D
Pivarski
J
J
Riley
D
D
Ryd
A
A
Sadoff
A J
AJ
Schwarthoff
H
H
Shi
X
X
Stroiney
S
S
Sun
W M
WM
Wilksen
T
T
Weinberger
M
M
Athar
S B
SB
Patel
R
R
Potlia
V
V
Yelton
J
J
Rubin
P
P
Cawlfield
C
C
Eisenstein
B I
BI
Karliner
I
I
Kim
D
D
Lowrey
N
N
Naik
P
P
Selen
M
M
White
E J
EJ
Wiss
J
J
Mitchell
R E
RE
Shepherd
M R
MR
Besson
D
D
Pedlar
T K
TK
Cronin-Hennessy
D
D
Gao
K Y
KY
Hietala
J
J
Kubota
Y
Y
Klein
T
T
Lang
B W
BW
Poling
R
R
Scott
A W
AW
Smith
A
A
Zweber
P
P
Dobbs
S
S
Metreveli
Z
Z
Seth
K K
KK
Tomaradze
A
A
Ernst
J
J
Ecklund
K M
KM
Severini
H
H
Love
W
W
Savinov
V
V
Aquines
O
O
Li
Z
Z
Lopez
A
A
Mehrabyan
S
S
Mendez
H
H
Ramirez
J
J
Huang
G S
GS
Miller
D H
DH
Pavlunin
V
V
Sanghi
B
B
Shipsey
I P J
IP
Xin
B
B
Adams
G S
GS
Anderson
M
M
Cummings
J P
JP
Danko
I
I
Hu
D
D
Moziak
B
B
Napolitano
J
J
He
Q
Q
Insler
J
J
Muramatsu
H
H
Park
C S
CS
Thorndike
E H
EH
Yang
F
F
Coan
T E
TE
Gao
Y S
YS
Artuso
M
M
Blusk
S
S
Butt
J
J
Li
J
J
Menaa
N
N
Mountain
R
R
Nisar
S
S
Randrianarivony
K
K
Sia
R
R
Skwarnicki
T
T
Stone
S
S
Wang
J C
JC
Zhang
K
K
Bonvicini
G
G
Cinabro
D
D
Dubrovin
M
M
Lincoln
A
A
Asner
D M
DM
Edwards
K W
KW
Briere
R A
RA
Ferguson
T
T
Tatishvili
G
G
Vogel
H
H
Watkins
M E
ME
Rosner
J L
JL