Observation of the decay B0-->lambda+cp.
We report the measurement of the charmed baryonic decay B(0)-->Lambda(+)(c)p with a branching fraction of (2.19(+0.56)(-0.49)+/-0.32+/-0.57)x10(-5) and a statistical significance of 5.8 sigma. The errors are statistical, systematic, and the error of the Lambda(+)(c)-->pK(-)pi(+) decay branching fraction. This is the first observation of a two-body baryonic B decay. The analysis is based on 78.2 fb(-1) of data accumulated at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric e(+)e(-) collider.
Gabyshev
N
N
High Energy Accelerator Research Organization (KEK), Tsukuba.
Kichimi
H
H
Abe
K
K
Abe
K
K
Abe
R
R
Abe
T
T
Adachi
I
I
Aihara
H
H
Akatsu
M
M
Asano
Y
Y
Aso
T
T
Aulchenko
V
V
Aushev
T
T
Bakich
A M
AM
Ban
Y
Y
Banas
E
E
Bay
A
A
Bedny
I
I
Bizjak
I
I
Bondar
A
A
Bozek
A
A
Bracko
M
M
Brodzicka
J
J
Browder
T E
TE
Casey
B C K
BC
Chang
M-C
MC
Chang
P
P
Chao
Y
Y
Chen
K-F
KF
Cheon
B G
BG
Chistov
R
R
Choi
S-K
SK
Choi
Y
Y
Choi
Y K
YK
Danilov
M
M
Dong
L Y
LY
Dragic
J
J
Drutskoy
A
A
Eidelman
S
S
Eiges
V
V
Enari
Y
Y
Fang
F
F
Fukunaga
C
C
Garmash
A
A
Gershon
T
T
Golob
B
B
Haba
J
J
Hagner
C
C
Handa
F
F
Hara
T
T
Hasuko
K
K
Hayashii
H
H
Hazumi
M
M
Higuchi
I
I
Hinz
L
L
Hojo
T
T
Hokuue
T
T
Hoshi
Y
Y
Hou
W-S
WS
Hsiung
Y B
YB
Huang
H-C
HC
Igaki
T
T
Igarashi
Y
Y
Iijima
T
T
Inami
K
K
Ishikawa
A
A
Itoh
R
R
Iwasaki
H
H
Iwasaki
Y
Y
Jang
H K
HK
Kang
J H
JH
Kang
J S
JS
Kapusta
P
P
Kataoka
S U
SU
Katayama
N
N
Kawai
H
H
Kawai
H
H
Kawasaki
T
T
Kim
D W
DW
Kim
H J
HJ
Kim
H O
HO
Kim
Hyunwoo
H
Kim
J H
JH
Kim
S K
SK
Kinoshita
K
K
Kobayashi
S
S
Korpar
S
S
Krizan
P
P
Krokovny
P
P
Kulasiri
R
R
Kuzmin
A
A
Kwon
Y-J
YJ
Lange
J S
JS
Leder
G
G
Lee
S H
SH
Li
J
J
Lin
S-W
SW
Liventsev
D
D
Lu
R-S
RS
MacNaughton
J
J
Majumder
G
G
Mandl
F
F
Matsuishi
T
T
Matsumoto
S
S
Matsumoto
T
T
Mitaroff
W
W
Miyabayashi
Y
Y
Miyake
H
H
Miyata
H
H
Moloney
G R
GR
Mori
T
T
Nagamine
T
T
Nagasaka
Y
Y
Nakadaira
T
T
Nakano
E
E
Nakao
M
M
Nam
J W
JW
Natkaniec
Z
Z
Nishida
S
S
Nitoh
O
O
Noguchi
S
S
Nozaki
T
T
Ogawa
S
S
Ohshima
T
T
Okabe
T
T
Okuno
S
S
Olsen
S L
SL
Onuki
Y
Y
Ostrowicz
W
W
Ozaki
H
H
Pakhlov
P
P
Palka
H
H
Park
C W
CW
Park
H
H
Park
K S
KS
Peak
L S
LS
Perroud
J-P
JP
Piilonen
L E
LE
Rozanska
M
M
Rybicki
K
K
Sagawa
H
H
Saitoh
S
S
Sakai
Y
Y
Sarangi
T R
TR
Satapathy
M
M
Satpathy
A
A
Schneider
O
O
Schrenk
S
S
Schümann
J
J
Schwartz
A J
AJ
Semenov
S
S
Senyo
K
K
Seuster
R
R
Sevior
M E
ME
Shibuya
H
H
Shwartz
B
B
Sidorov
V
V
Singh
J B
JB
Soni
N
N
Stanic
S
S
Staric
M
M
Sugi
A
A
Sugiyama
A
A
Sumisawa
K
K
Sumiyoshi
T
T
Suzuki
S
S
Suzuki
S Y
SY
Swain
S K
SK
Takahashi
T
T
Takasaki
F
F
Tamai
K
K
Tamura
N
N
Tanaka
J
J
Tanaka
M
M
Taylor
G N
GN
Teramoto
Y
Y
Tokuda
S
S
Tomura
T
T
Tsuboyama
T
T
Tsukamoto
T
T
Uehara
S
S
Unno
Y
Y
Uno
S
S
Varner
G
G
Varvell
K E
KE
Wang
C C
CC
Wang
C H
CH
Wang
J G
JG
Wang
M-Z
MZ
Watanabe
Y
Y
Won
E
E
Yabsley
B D
BD
Yamada
Y
Y
Yamaguchi
A
A
Yamashita
Y
Y
Yamashita
Y
Y
Yamauchi
M
M
Yanai
H
H
Yuan
Y
Y
Yusa
Y
Y
Zhang
C C
CC
Zhang
Z P
ZP
Zheng
Y
Y
Zhilich
V
V
Zontar
D
D