Observation of the eta(c)(2S) in Exclusive B-->KK(S)K-pi(+) Decays.
We report the observation of a narrow peak in the K(S)K-pi(+) invariant mass distribution in a sample of exclusive B-->KK(S)K-pi(+) decays collected with the Belle detector at the KEKB asymmetric e(+)e(-) collider. The measured mass of the peak is M=3654+/-6(stat)+/-8(syst) MeV/c(2), and we place a 90% confidence level upper limit on the width of Gamma<55 MeV/c(2). The properties agree with heavy-quark potential model expectations for the eta(c)(2S) meson, the n=2 singlet S charmonium state.
Choi
S-K
SK
Gyeongsang National University, Chinju.
Olsen
S L
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Abe
K
K
Abe
K
K
Abe
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R
Abe
T
T
Adachi
I
I
Ahn
Byoung Sup
BS
Aihara
H
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Akatsu
M
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Asano
Y
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Aso
T
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Aulchenko
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Aushev
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Bakich
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Ban
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Bay
A
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Bondar
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Bozek
A
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Bracko
M
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Brodzicka
J
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Browder
T E
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Casey
B C K
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Chang
P
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Chao
Y
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Cheon
B G
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Chistov
R
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Choi
Y
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Danilov
M
M
Dong
L Y
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Drutskoy
A
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Eidelman
S
S
Eiges
V
V
Enari
Y
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Fang
F
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Fujii
H
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Fukunaga
C
C
Gabyshev
N
N
Garmash
A
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Gershon
T
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Gordon
A
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Guo
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Handa
F
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Hara
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Harada
Y
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Hayashii
H
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Hazumi
M
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Heenan
E M
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Higuchi
I
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Higuchi
T
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Hojo
T
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Hokuue
T
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Hoshi
Y
Y
Hou
S R
SR
Hou
W-S
WS
Huang
H-C
HC
Igaki
T
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Igarashi
Y
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Iijima
T
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Inami
K
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Ishikawa
A
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Itoh
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Iwamoto
M
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Iwasaki
H
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Iwasaki
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Kaneko
J
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Kang
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Kang
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Kapusta
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Katayama
N
N
Kawai
H
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Kawakami
Y
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Kawamura
N
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Kawasaki
T
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Kichimi
H
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Kim
D W
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Kim
Heejong
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Kim
H J
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Kim
H O
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Kim
Hyunwoo
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Kim
T H
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Kinoshita
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Krizan
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Krokovny
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Kulasiri
R
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Kumar
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Kuzmin
A
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Kwon
Y-J
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Lange
J S
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Leder
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Lee
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Li
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Liventsev
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Lu
R-S
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MacNaughton
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Majumder
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Mandl
F
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Matsumoto
S
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Matsumoto
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Miyake
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Miyata
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Moloney
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Mori
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Nagamine
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Nagasaka
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Nakano
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Nakao
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Nam
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Natkaniec
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Neichi
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Nishida
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Nitoh
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Nozaki
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Ogawa
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Ohno
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Ohshima
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Okabe
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Okuno
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Ostrowicz
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Ozaki
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Pakhlov
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Palka
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Park
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Park
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Peak
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Perroud
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Peters
M
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Piilonen
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Rozanska
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Rybicki
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Sagawa
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Satpathy
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Schneider
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Schrenk
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Semenov
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Senyo
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Sevior
M E
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Shibuya
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Shwartz
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Sidorov
V
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Singh
J B
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Stanic
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Staric
M
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Sugi
A
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Sugiyama
A
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Sumisawa
K
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Sumiyoshi
T
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Suzuki
S
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Suzuki
S Y
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Takahashi
T
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Takasaki
F
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Tamai
K
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Tamura
N
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Tanaka
J
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Tanaka
M
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Taylor
G N
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Teramoto
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Tokuda
S
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Tomura
T
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Tovey
S N
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Tsuboyama
T
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Tsukamoto
T
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Uehara
S
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Ueno
K
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Uno
S
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Ushiroda
Y
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Vahsen
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Varner
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Varvell
K E
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Wang
C C
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Wang
C H
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Wang
J G
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Wang
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Watanabe
Y
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Won
E
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Yabsley
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Yamada
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Yamaguchi
A
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Yamashita
Y
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Yamauchi
M
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Yanai
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Yashima
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Yokoyama
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Yuan
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Yusa
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Zhang
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Zhilich
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Zontar
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