Study of B Decays to Charmonium States: B-->eta(c)K and B --> chi(c0)K.
In a sample of 9.66x10(6)B&Bmacr; pairs collected with the CLEO detector we make the first observation of B decays to an eta(c) and a kaon. We measure branching fractions B(B+-->eta(c)K+) = (0.69(+0.26)(-0.21)+/-0.08+/-0.20)x10(-3) and B(B degrees -->eta(c)K degrees ) = (1.09(+0.55)(-0.42)+/-0.12+/-0.31)x10(-3), where the first error is statistical, the second is systematic, and the third is from the eta(c) branching fraction uncertainty. From these we extract the eta(c) decay constant in the factorization approximation, f(eta(c)) = 335+/-75 MeV. We also search for B decays to a chi(c0) and a kaon. No evidence for a signal is found and we set 90% C.L. upper limits: B(B+-->chi(c0)K+)<4.8x10(-4) and B(B degrees -->chi(c0)K degrees )<5.0x10(-4).
Edwards
KW
Carleton University, Ottawa, Ontario, Canada K1S 5B6 and and the Institute of Particle Physics, Canada.
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Patel
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Sadoff
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Ammar
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Bean
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Davis
R
Kwak
N
Zhao
X
Anderson
S
Frolov
VV
Kubota
Y
Lee
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Mahapatra
R
O'Neill
JJ
Poling
R
Riehle
T
Smith
A
Stepaniak
CJ
Urheim
J
Ahmed
S
Alam
MS
Athar
SB
Jian
L
Ling
L
Saleem
M
Timm
S
Wappler
F
Anastassov
A
Duboscq
JE
Eckhart
E
Gan
KK
Gwon
C
Hart
T
Honscheid
K
Hufnagel
D
Kagan
H
Kass
R
Pedlar
TK
Schwarthoff
H
Thayer
JB
von Toerne E
Zoeller
MM
Richichi
SJ
Severini
H
Skubic
P
Undrus
A
Chen
S
Fast
J
Hinson
JW
Lee
J
Miller
DH
Shibata
EI
Shipsey
IP
Pavlunin
V
Cronin-Hennessy
D
Lyon
AL
Thorndike
EH
Jessop
CP
Marsiske
H
Perl
ML
Savinov
V
Ugolini
D
Zhou
X
Coan
TE
Fadeyev
V
Maravin
Y
Narsky
I
Stroynowski
R
Ye
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Wlodek
T
Artuso
M
Ayad
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Boulahouache
C
Bukin
K
Dambasuren
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Karamov
S
Majumder
G
Moneti
GC
Mountain
R
Schuh
S
Skwarnicki
T
Stone
S
Viehhauser
G
Wang
JC
Wolf
A
Wu
J
Kopp
S
Mahmood
AH
Csorna
SE
Danko
I
McLean
KW
Márka
S
Xu
Z
Godang
R
Kinoshita
K
Lai
IC
Schrenk
S
Bonvicini
G
Cinabro
D
McGee
S
Perera
LP
Zhou
GJ
Lipeles
E
Pappas
SP
Schmidtler
M
Shapiro
A
Sun
WM
Weinstein
AJ
Würthwein
F
Jaffe
DE
Masek
G
Paar
HP
Potter
EM
Prell
S
Sharma
V
Asner
DM
Eppich
A
Hill
TS
Morrison
RJ
Briere
RA
Behrens
BH
Ford
WT
Gritsan
A
Roy
J
Smith
JG
Alexander
JP
Baker
R
Bebek
C
Berger
BE
Berkelman
K
Blanc
F
Boisvert
V
Cassel
DG
Dickson
M
Drell
PS
Ecklund
KM
Ehrlich
R
Foland
AD
Gaidarev
P
Gibbons
L
Gittelman
B
Gray
SW
Hartill
DL
Heltsley
BK
Hopman
PI
Jones
CD
Kreinick
DL
Lohner
M
Magerkurth
A
Meyer
TO
Mistry
NB
Nordberg
E
Patterson
JR
Peterson
D
Riley
D
Thayer
JG
Thies
PG
Valant-Spaight
B
Warburton
A
Avery
P
Prescott
C
Rubiera
AI
Yelton
J
Zheng
J
Brandenburg
G
Ershov
A
Gao
YS
Kim
DY
Wilson
R
Browder
TE
Li
Y
Rodriguez
JL
Yamamoto
H
Bergfeld
T
Eisenstein
BI
Ernst
J
Gladding
GE
Gollin
GD
Hans
RM
Johnson
E
Karliner
I
Marsh
MA
Palmer
M
Plager
C
Sedlack
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Selen
M
Thaler
JJ
Williams
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