Measurement of D0-D0 mixing parameters in D0 --> Ks pi+ pi- decays.
We report a measurement of D0-D(0) mixing parameters in D(0) --> K(s)(0) pi(+) pi(-) decays using a time-dependent Dalitz-plot analysis. We first assume CP conservation and subsequently allow for CP violation. The results are based on 540 fb(-1) of data accumulated with the Belle detector at the KEKB e(+)e(-) collider. Assuming negligible CP violation, we measure the mixing parameters x = (0.80 +/- 0.29(-0.07-0.14)(+0.09+0.10))% and y = (0.33+/-0.24(-0.12-0.08)(+0.08+0.06))%, where the errors are statistical, experimental systematic, and systematic due to the Dalitz decay model, respectively. Allowing for CP violation, we obtain the CP-violating parameters |q / p| = 0.86(-0.29-0.03)(+0.30+0.06) +/- 0.08 and arg(q/p) = (-14(-18-3-4)(+16+5+2)) degrees .
Zhang
L M
LM
University of Science and Technology of China, Hefei.
Zhang
Z P
ZP
Adachi
I
I
Aihara
H
H
Aulchenko
V
V
Aushev
T
T
Bakich
A M
AM
Balagura
V
V
Barberio
E
E
Bay
A
A
Belous
K
K
Bitenc
U
U
Bondar
A
A
Bozek
A
A
Bracko
M
M
Brodzicka
J
J
Browder
T E
TE
Chang
P
P
Chao
Y
Y
Chen
A
A
Chen
K-F
KF
Chen
W T
WT
Cheon
B G
BG
Chiang
C-C
CC
Cho
I-S
IS
Choi
Y
Y
Choi
Y K
YK
Dalseno
J
J
Danilov
M
M
Dash
M
M
Drutskoy
A
A
Eidelman
S
S
Epifanov
D
D
Fratina
S
S
Gabyshev
N
N
Gokhroo
G
G
Golob
B
B
Ha
H
H
Haba
J
J
Hara
T
T
Hastings
N C
NC
Hayasaka
K
K
Hayashii
H
H
Hazumi
M
M
Heffernan
D
D
Hokuue
T
T
Hoshi
Y
Y
Hou
W-S
WS
Hsiung
Y B
YB
Hyun
H J
HJ
Iijima
T
T
Ikado
K
K
Inami
K
K
Ishikawa
A
A
Ishino
H
H
Itoh
R
R
Iwasaki
M
M
Iwasaki
Y
Y
Joshi
N J
NJ
Kah
D H
DH
Kaji
H
H
Kajiwara
S
S
Kang
J H
JH
Kawai
H
H
Kawasaki
T
T
Kichimi
H
H
Kim
H J
HJ
Kim
H O
HO
Kim
S K
SK
Kim
Y J
YJ
Kinoshita
K
K
Korpar
S
S
Krizan
P
P
Krokovny
P
P
Kumar
R
R
Kuo
C C
CC
Kuzmin
A
A
Kwon
Y-J
YJ
Lee
J S
JS
Lee
M J
MJ
Lee
S E
SE
Lesiak
T
T
Li
J
J
Limosani
A
A
Lin
S-W
SW
Liu
Y
Y
Liventsev
D
D
Matsumoto
T
T
Matyja
A
A
McOnie
S
S
Medvedeva
T
T
Mitaroff
W
W
Miyake
H
H
Miyata
H
H
Miyazaki
Y
Y
Mizuk
R
R
Nagasaka
Y
Y
Nakamura
I
I
Nakano
E
E
Nakao
M
M
Natkaniec
Z
Z
Nishida
S
S
Nitoh
O
O
Ogawa
S
S
Ohshima
T
T
Okuno
S
S
Olsen
S L
SL
Onuki
Y
Y
Ostrowicz
W
W
Ozaki
H
H
Pakhlov
P
P
Pakhlova
G
G
Park
C W
CW
Park
H
H
Peak
L S
LS
Pestotnik
R
R
Piilonen
L E
LE
Poluektov
A
A
Sahoo
H
H
Sakai
Y
Y
Schneider
O
O
Schümann
J
J
Schwanda
C
C
Schwartz
A J
AJ
Seidl
R
R
Senyo
K
K
Sevior
M E
ME
Shapkin
M
M
Shibuya
H
H
Shinomiya
S
S
Shiu
J-G
JG
Shwartz
B
B
Singh
J B
JB
Sokolov
A
A
Somov
A
A
Soni
N
N
Stanic
S
S
Staric
M
M
Stoeck
H
H
Sumisawa
K
K
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
Tikhomirov
I
I
Tsuboyama
T
T
Uehara
S
S
Ueno
K
K
Uglov
T
T
Unno
Y
Y
Uno
S
S
Urquijo
P
P
Usov
Y
Y
Varner
G
G
Vervink
K
K
Villa
S
S
Vinokurova
A
A
Wang
C H
CH
Wang
M-Z
MZ
Wang
P
P
Watanabe
Y
Y
Won
E
E
Yabsley
B D
BD
Yamaguchi
A
A
Yamashita
Y
Y
Yamauchi
M
M
Yuan
C Z
CZ
Zhang
C C
CC
Zhilich
V
V
Zupanc
A
A