Measurement of the branching fraction, polarization, and asymmetry for decays, and determination of the Cabibbo-Kobayashi-Maskawa phase.
We have measured the branching fraction , longitudinal polarization fraction f(L), and CP asymmetry coefficients A and S for B(0) --> rho(+) rho(-) decays with the Belle detector at the KEKB e(+) e(-) collider using 253 Fb(-1) of data. We obtain B = [22.8 +/- 3.8(stat)(+2.3)(-2.6)(syst)] x 10(-6), f(L) = 0.941 (+0.034)(-0.040)(stat) +/- 0.030(syst). A = 0.00 +/- 0.30(stat) +/- 0.09(syst) and S = 0.08 +/- 0.09(syst). These values are used to constrain the Cabibbo-Kobayashi-Maskawa phase ; the solution consistent with the standard model is phi(2) = (88 +/- 17) degrees or 59 degrees < phi(2) < 115 degrees at 90% C.L.
Somov
A
A
University of Cincinnati, Ohio 45221, USA.
Schwartz
A J
AJ
Abe
K
K
Abe
K
K
Adachi
I
I
Aihara
H
H
Anipko
D
D
Arinstein
K
K
Asano
Y
Y
Aulchenko
V
V
Aushev
T
T
Aziz
T
T
Bahinipati
S
S
Bakich
A M
AM
Balagura
V
V
Bay
A
A
Bedny
I
I
Belous
K
K
Bitenc
U
U
Bizjak
I
I
Blyth
S
S
Bondar
A
A
Bozek
A
A
Bracko
M
M
Brodzicka
J
J
Browder
T E
TE
Chang
M-C
MC
Chang
P
P
Chao
Y
Y
Chen
A
A
Chen
W T
WT
Cheon
B G
BG
Chistov
R
R
Choi
S-K
SK
Choi
Y
Y
Choi
Y K
YK
Chuvikov
A
A
Cole
S
S
Dalseno
J
J
Dash
M
M
Dragic
J
J
Drutskoy
A
A
Eidelman
S
S
Epifanov
D
D
Gabyshev
N
N
Garmash
A
A
Gershon
T
T
Go
A
A
Gokhroo
G
G
Golob
B
B
Hara
K
K
Hara
T
T
Hastings
N C
NC
Hayasaka
K
K
Hayashii
H
H
Hazumi
M
M
Hoshi
Y
Y
Hou
S
S
Hou
W-S
WS
Hsiung
Y B
YB
Iijima
T
T
Ikado
K
K
Inami
K
K
Ishikawa
A
A
Ishino
H
H
Itoh
R
R
Iwasaki
M
M
Iwasaki
Y
Y
Kang
J H
JH
Kapusta
P
P
Katayama
N
N
Kawai
H
H
Kawasaki
T
T
Kichimi
H
H
Kim
H J
HJ
Kim
S K
SK
Kim
S M
SM
Kinoshita
K
K
Korpar
S
S
Krizan
P
P
Krokovny
P
P
Kuo
C C
CC
Kusaka
A
A
Kuzmin
A
A
Kwon
Y-J
YJ
Leder
G
G
Lesiak
T
T
Li
J
J
Limosani
A
A
Lin
S-W
SW
Macnaughton
J
J
Mandl
F
F
Marlow
D
D
Matsumoto
T
T
Mitaroff
W
W
Miyabayashi
K
K
Miyake
H
H
Miyata
H
H
Miyazaki
Y
Y
Mizuk
R
R
Mohapatra
D
D
Nagasaka
Y
Y
Nakao
M
M
Natkaniec
Z
Z
Nishida
S
S
Nitoh
O
O
Noguchi
S
S
Ogawa
S
S
Ohshima
T
T
Okabe
T
T
Okuno
S
S
Olsen
S L
SL
Ostrowicz
W
W
Ozaki
H
H
Palka
H
H
Park
C W
CW
Park
H
H
Pestotnik
R
R
Piilonen
L E
LE
Poluektov
A
A
Sakai
Y
Y
Sarangi
T R
TR
Sato
N
N
Schietinger
T
T
Schneider
O
O
Schwanda
C
C
Seidl
R
R
Senyo
K
K
Sevior
M E
ME
Shapkin
M
M
Shibuya
H
H
Shwartz
B
B
Sidorov
V
V
Sokolov
A
A
Soni
N
N
Stanic
S
S
Staric
M
M
Sumiyoshi
T
T
Suzuki
S
S
Tajima
O
O
Takasaki
F
F
Tamai
K
K
Tamura
N
N
Tanaka
M
M
Taylor
G N
GN
Teramoto
Y
Y
Tian
X C
XC
Trabelsi
K
K
Tsuboyama
T
T
Tsukamoto
T
T
Uehara
S
S
Uglov
T
T
Ueno
K
K
Unno
Y
Y
Uno
S
S
Urquijo
P
P
Ushiroda
Y
Y
Usov
Y
Y
Varner
G
G
Villa
S
S
Wang
C H
CH
Wang
M-Z
MZ
Watanabe
Y
Y
Won
E
E
Xie
Q L
QL
Yabsley
B D
BD
Yamaguchi
A
A
Yamauchi
M
M
Ying
J
J
Zhang
L M
LM
Zhang
Z P
ZP
Zhilich
V
V