Absolute branching fraction measurements for D+ and D0 inclusive semileptonic decays.
We present measurements of the inclusive branching fractions for the decays D+-->Xe+ nu(e) and D0-->Xe+ nu(e), using 281 pb(-1) of data collected on the psi(3770) resonance with the CLEO-c detector. We find B(D0-->Xe+ nu(e)) = (6.46+/-0.17+/-0.13)% and B(D+-->Xe+ nu(e)) = (16.13+/-0.20+/-0.33)%. Using the known D meson lifetimes, we obtain the ratio Gamma(D+)sl/Gamma(D0)sl = 0.985+/-0.028+/-0.015, confirming isospin invariance at the level of 3%. The positron momentum spectra from D+ and D0 have consistent shapes.
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
Ecklund
K M
KM
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
Stoeck
H
H
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
Sedlack
C
C
Selen
M
M
White
E J
EJ
Wiss
J
J
Shepherd
M R
MR
Besson
D
D
Pedlar
T K
TK
Cronin-Hennessy
D
D
Gao
K Y
KY
Gong
D T
DT
Hietala
J
J
Kubota
Y
Y
Klein
T
T
Lang
B W
BW
Poling
R
R
Scott
A W
AW
Smith
A
A
Dobbs
S
S
Metreveli
Z
Z
Seth
K K
KK
Tomaradze
A
A
Zweber
P
P
Ernst
J
J
Severini
H
H
Dytman
S A
SA
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
Napolitano
J
J
He
Q
Q
Insler
J
J
Muramatsu
H
H
Park
C S
CS
Thorndike
E H
EH
Coan
T E
TE
Gao
Y S
YS
Liu
F
F
Artuso
M
M
Blusk
S
S
Butt
J
J
Li
J
J
Menaa
N
N
Mountain
R
R
Nisar
S
S
Randrianarivony
K
K
Redjimi
R
R
Sia
R
R
Skwarnicki
T
T
Stone
S
S
Wang
J C
JC
Zhang
K
K
Csorna
S E
SE
Bonvicini
G
G
Cinabro
D
D
Dubrovin
M
M
Lincoln
A
A
Asner
D M
DM
Edwards
K W
KW
Briere
R A
RA
Brock
I
I
Chen
J
J
Ferguson
T
T
Tatishvili
G
G
Vogel
H
H
Watkins
M E
ME
Rosner
J L
JL