Measurement of the Direct CP Asymmetry in B¯→X(s+dγ) Decays with a Lepton Tag.
We report the measurement of the direct CP asymmetry in the radiative B¯→X(s+dγ) decay using a data sample of (772 ± 11)×10(6) BB[over ¯] pairs collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The CP asymmetry is measured as a function of the photon energy threshold. For Eγ*≥2.1  GeV, where Eγ* is the photon energy in the center-of-mass frame, we obtain A(CP)(B¯→X(s+dγ))=(2.2±3.9±0.9)%, consistent with the standard model prediction.
University of Bonn, 53115 Bonn.
L
L
Pesántez
School of Physics, University of Melbourne, Victoria 3010.
P
P
Urquijo
University of Bonn, 53115 Bonn.
J
J
Dingfelder
Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451.
A
A
Abdesselam
The Graduate University for Advanced Studies, Hayama 240-0193.|High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
I
I
Adachi
H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342.
K
K
Adamczyk
Department of Physics, University of Tokyo, Tokyo 113-0033.
H
H
Aihara
Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589.|Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451.
S
S
Al Said
Budker Institute of Nuclear Physics SB RAS and Novosibirsk State University, Novosibirsk 630090.
K
K
Arinstein
Pacific Northwest National Laboratory, Richland, Washington 99352.
D M
DM
Asner
Budker Institute of Nuclear Physics SB RAS and Novosibirsk State University, Novosibirsk 630090.
V
V
Aulchenko
Institute for Theoretical and Experimental Physics, Moscow 117218.|Moscow Institute of Physics and Technology, Moscow Region 141700.
T
T
Aushev
Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451.
R
R
Ayad
Indian Institute of Technology Bhubaneswar, Satya Nagar 751007.
S
S
Bahinipati
School of Physics, University of Sydney, New South Wales 2006.
A M
AM
Bakich
Pacific Northwest National Laboratory, Richland, Washington 99352.
V
V
Bansal
School of Physics, University of Melbourne, Victoria 3010.
E
E
Barberio
Nara Women's University, Nara 630-8506.
V
V
Bhardwaj
Indian Institute of Technology Guwahati, Assam 781039.
B
B
Bhuyan
Budker Institute of Nuclear Physics SB RAS and Novosibirsk State University, Novosibirsk 630090.
A
A
Bobrov
Budker Institute of Nuclear Physics SB RAS and Novosibirsk State University, Novosibirsk 630090.
A
A
Bondar
Wayne State University, Detroit, Michigan 48202.
G
G
Bonvicini
H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342.
A
A
Bozek
J. Stefan Institute, 1000 Ljubljana.|University of Maribor, 2000 Maribor.
M
M
Bračko
University of Hawaii, Honolulu, Hawaii 96822.
T E
TE
Browder
Faculty of Mathematics and Physics, Charles University, 121 16 Prague.
D
D
Červenkov
Max-Planck-Institut für Physik, 80805 München.
V
V
Chekelian
National Central University, Chung-li 32054.
A
A
Chen
Hanyang University, Seoul 133-791.
B G
BG
Cheon
Institute for Theoretical and Experimental Physics, Moscow 117218.
K
K
Chilikin
Institute for Theoretical and Experimental Physics, Moscow 117218.
R
R
Chistov
Korea Institute of Science and Technology Information, Daejeon 305-806.
K
K
Cho
Max-Planck-Institut für Physik, 80805 München.
V
V
Chobanova
Sungkyunkwan University, Suwon 440-746.
Y
Y
Choi
Wayne State University, Detroit, Michigan 48202.
D
D
Cinabro
Max-Planck-Institut für Physik, 80805 München.|Excellence Cluster Universe, Technische Universität München, 85748 Garching.
J
J
Dalseno
Faculty of Mathematics and Physics, Charles University, 121 16 Prague.
Z
Z
Doležal
Faculty of Mathematics and Physics, Charles University, 121 16 Prague.
Z
Z
Drásal
Institute for Theoretical and Experimental Physics, Moscow 117218.|Moscow Physical Engineering Institute, Moscow 115409.
A
A
Drutskoy
Indian Institute of Technology Guwahati, Assam 781039.
D
D
Dutta
Budker Institute of Nuclear Physics SB RAS and Novosibirsk State University, Novosibirsk 630090.
S
S
Eidelman
Wayne State University, Detroit, Michigan 48202.
H
H
Farhat
Pacific Northwest National Laboratory, Richland, Washington 99352.
J E
JE
Fast
Deutsches Elektronen-Synchrotron, 22607 Hamburg.
T
T
Ferber
Deutsches Elektronen-Synchrotron, 22607 Hamburg.
O
O
Frost
Tata Institute of Fundamental Research, Mumbai 400005.
V
V
Gaur
Budker Institute of Nuclear Physics SB RAS and Novosibirsk State University, Novosibirsk 630090.
N
N
Gabyshev
Wayne State University, Detroit, Michigan 48202.
S
S
Ganguly
Budker Institute of Nuclear Physics SB RAS and Novosibirsk State University, Novosibirsk 630090.
A
A
Garmash
Justus-Liebig-Universität Gießen, 35392 Gießen.
D
D
Getzkow
Wayne State University, Detroit, Michigan 48202.
R
R
Gillard
Hanyang University, Seoul 133-791.
Y M
YM
Goh
J. Stefan Institute, 1000 Ljubljana.|Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana.
B
B
Golob
The Graduate University for Advanced Studies, Hayama 240-0193.|High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
J
J
Haba
University of Bonn, 53115 Bonn.
J
J
Hasenbusch
Nara Women's University, Nara 630-8506.
H
H
Hayashii
Peking University, Beijing 100871.
X H
XH
He
Institut für Experimentelle Kernphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe.
A
A
Heller
Tohoku University, Sendai 980-8578.
T
T
Horiguchi
Department of Physics, National Taiwan University, Taipei 10617.
W-S
WS
Hou
Institut für Experimentelle Kernphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe.
M
M
Huschle
Graduate School of Science, Nagoya University, Nagoya 464-8602.|Kobayashi-Maskawa Institute, Nagoya University, Nagoya 464-8602.
T
T
Iijima
Graduate School of Science, Nagoya University, Nagoya 464-8602.
K
K
Inami
Tohoku University, Sendai 980-8578.
A
A
Ishikawa
The Graduate University for Advanced Studies, Hayama 240-0193.|High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
R
R
Itoh
High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
Y
Y
Iwasaki
University of Hawaii, Honolulu, Hawaii 96822.
I
I
Jaegle
Kennesaw State University, Kennesaw, Georgia 30144.
D
D
Joffe
School of Physics, University of Melbourne, Victoria 3010.
T
T
Julius
Kyungpook National University, Daegu 702-701.
K H
KH
Kang
Tohoku University, Sendai 980-8578.
E
E
Kato
Niigata University, Niigata 950-2181.
T
T
Kawasaki
Max-Planck-Institut für Physik, 80805 München.
C
C
Kiesling
Soongsil University, Seoul 156-743.
D Y
DY
Kim
Korea University, Seoul 136-713.
J B
JB
Kim
Korea Institute of Science and Technology Information, Daejeon 305-806.
J H
JH
Kim
Korea University, Seoul 136-713.
K T
KT
Kim
Kyungpook National University, Daegu 702-701.
M J
MJ
Kim
Hanyang University, Seoul 133-791.
S H
SH
Kim
Korea Institute of Science and Technology Information, Daejeon 305-806.
Y J
YJ
Kim
Korea University, Seoul 136-713.
B R
BR
Ko
Faculty of Mathematics and Physics, Charles University, 121 16 Prague.
P
P
Kodyš
J. Stefan Institute, 1000 Ljubljana.|University of Maribor, 2000 Maribor.
S
S
Korpar
J. Stefan Institute, 1000 Ljubljana.|Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana.
P
P
Križan
Budker Institute of Nuclear Physics SB RAS and Novosibirsk State University, Novosibirsk 630090.
P
P
Krokovny
Institut für Experimentelle Kernphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe.
B
B
Kronenbitter
Institut für Experimentelle Kernphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe.
T
T
Kuhr
Tokyo Metropolitan University, Tokyo 192-0397.
T
T
Kumita
Budker Institute of Nuclear Physics SB RAS and Novosibirsk State University, Novosibirsk 630090.
A
A
Kuzmin
Yonsei University, Seoul 120-749.
Y-J
YJ
Kwon
Justus-Liebig-Universität Gießen, 35392 Gießen.
J S
JS
Lange
Hanyang University, Seoul 133-791.
I S
IS
Lee
CNP, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061.
Y
Y
Li
Max-Planck-Institut für Physik, 80805 München.
L
L
Li Gioi
Indian Institute of Technology Madras, Chennai 600036.
J
J
Libby
High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
D
D
Liventsev
Budker Institute of Nuclear Physics SB RAS and Novosibirsk State University, Novosibirsk 630090.
P
P
Lukin
Budker Institute of Nuclear Physics SB RAS and Novosibirsk State University, Novosibirsk 630090.
D
D
Matvienko
Nara Women's University, Nara 630-8506.
K
K
Miyabayashi
Niigata University, Niigata 950-2181.
H
H
Miyata
Institute for Theoretical and Experimental Physics, Moscow 117218.|Moscow Physical Engineering Institute, Moscow 115409.
R
R
Mizuk
Tata Institute of Fundamental Research, Mumbai 400005.
G B
GB
Mohanty
Max-Planck-Institut für Physik, 80805 München.|Excellence Cluster Universe, Technische Universität München, 85748 Garching.
A
A
Moll
Korea University, Seoul 136-713.
H K
HK
Moon
Osaka City University, Osaka 558-8585.
E
E
Nakano
The Graduate University for Advanced Studies, Hayama 240-0193.|High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
M
M
Nakao
J. Stefan Institute, 1000 Ljubljana.
T
T
Nanut
H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342.
Z
Z
Natkaniec
Indian Institute of Technology Madras, Chennai 600036.
M
M
Nayak
Department of Physics, University of Tokyo, Tokyo 113-0033.
C
C
Ng
Tata Institute of Fundamental Research, Mumbai 400005.
N K
NK
Nisar
The Graduate University for Advanced Studies, Hayama 240-0193.|High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
S
S
Nishida
Toho University, Funabashi 274-8510.
S
S
Ogawa
Kanagawa University, Yokohama 221-8686.
S
S
Okuno
Seoul National University, Seoul 151-742.
S L
SL
Olsen
University of Bonn, 53115 Bonn.
C
C
Oswald
Institute for Theoretical and Experimental Physics, Moscow 117218.|Moscow Physical Engineering Institute, Moscow 115409.
P
P
Pakhlov
Institute for Theoretical and Experimental Physics, Moscow 117218.
G
G
Pakhlova
Sungkyunkwan University, Suwon 440-746.
C W
CW
Park
Kyungpook National University, Daegu 702-701.
H
H
Park
Luther College, Decorah, Iowa 52101.
T K
TK
Pedlar
J. Stefan Institute, 1000 Ljubljana.
R
R
Pestotnik
J. Stefan Institute, 1000 Ljubljana.
M
M
Petrič
CNP, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061.
L E
LE
Piilonen
J. Stefan Institute, 1000 Ljubljana.
E
E
Ribežl
Max-Planck-Institut für Physik, 80805 München.
M
M
Ritter
Deutsches Elektronen-Synchrotron, 22607 Hamburg.
A
A
Rostomyan
H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342.
M
M
Rozanska
The Graduate University for Advanced Studies, Hayama 240-0193.|High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
Y
Y
Sakai
Tata Institute of Fundamental Research, Mumbai 400005.
S
S
Sandilya
High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
L
L
Santelj
Tohoku University, Sendai 980-8578.
T
T
Sanuki
Graduate School of Science, Nagoya University, Nagoya 464-8602.
Y
Y
Sato
University of Pittsburgh, Pittsburgh, Pennsylvania 15260.
V
V
Savinov
École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015.
O
O
Schneider
University of the Basque Country UPV/EHU, 48080 Bilbao.|IKERBASQUE, Basque Foundation for Science, 48013 Bilbao.
G
G
Schnell
Institute of High Energy Physics, Vienna 1050.
C
C
Schwanda
University of Cincinnati, Cincinnati, Ohio 45221.
A J
AJ
Schwartz
Yamagata University, Yamagata 990-8560.
K
K
Senyo
Graduate School of Science, Nagoya University, Nagoya 464-8602.
O
O
Seon
School of Physics, University of Melbourne, Victoria 3010.
M E
ME
Sevior
Budker Institute of Nuclear Physics SB RAS and Novosibirsk State University, Novosibirsk 630090.
V
V
Shebalin
Beihang University, Beijing 100191.
C P
CP
Shen
Tokyo Institute of Technology, Tokyo 152-8550.
T-A
TA
Shibata
Department of Physics, National Taiwan University, Taipei 10617.
J-G
JG
Shiu
Budker Institute of Nuclear Physics SB RAS and Novosibirsk State University, Novosibirsk 630090.
B
B
Shwartz
School of Physics, University of Sydney, New South Wales 2006.
A
A
Sibidanov
Max-Planck-Institut für Physik, 80805 München.|Excellence Cluster Universe, Technische Universität München, 85748 Garching.
F
F
Simon
Yonsei University, Seoul 120-749.
Y-S
YS
Sohn
Institute for High Energy Physics, Protvino 142281.
A
A
Sokolov
Institute for Theoretical and Experimental Physics, Moscow 117218.
E
E
Solovieva
J. Stefan Institute, 1000 Ljubljana.
M
M
Starič
Deutsches Elektronen-Synchrotron, 22607 Hamburg.
M
M
Steder
Tokyo Metropolitan University, Tokyo 192-0397.
T
T
Sumiyoshi
INFN-Sezione di Torino, 10125 Torino.|University of Torino, 10124 Torino.
U
U
Tamponi
High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
N
N
Taniguchi
Pacific Northwest National Laboratory, Richland, Washington 99352.
G
G
Tatishvili
Osaka City University, Osaka 558-8585.
Y
Y
Teramoto
The Graduate University for Advanced Studies, Hayama 240-0193.|High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
K
K
Trabelsi
Tokyo Institute of Technology, Tokyo 152-8550.
M
M
Uchida
Institute for Theoretical and Experimental Physics, Moscow 117218.|Moscow Institute of Physics and Technology, Moscow Region 141700.
T
T
Uglov
Hanyang University, Seoul 133-791.
Y
Y
Unno
The Graduate University for Advanced Studies, Hayama 240-0193.|High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
S
S
Uno
Budker Institute of Nuclear Physics SB RAS and Novosibirsk State University, Novosibirsk 630090.
Y
Y
Usov
University of the Basque Country UPV/EHU, 48080 Bilbao.
C
C
Van Hulse
Max-Planck-Institut für Physik, 80805 München.
P
P
Vanhoefer
University of Hawaii, Honolulu, Hawaii 96822.
G
G
Varner
Budker Institute of Nuclear Physics SB RAS and Novosibirsk State University, Novosibirsk 630090.
A
A
Vinokurova
Budker Institute of Nuclear Physics SB RAS and Novosibirsk State University, Novosibirsk 630090.
V
V
Vorobyev
Justus-Liebig-Universität Gießen, 35392 Gießen.
M N
MN
Wagner
University of Cincinnati, Cincinnati, Ohio 45221.
B
B
Wang
National United University, Miao Li 36003.
C H
CH
Wang
Department of Physics, National Taiwan University, Taipei 10617.
M-Z
MZ
Wang
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049.
P
P
Wang
Kanagawa University, Yokohama 221-8686.
Y
Y
Watanabe
CNP, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061.
K M
KM
Williams
Korea University, Seoul 136-713.
E
E
Won
Pacific Northwest National Laboratory, Richland, Washington 99352.
J
J
Yamaoka
Deutsches Elektronen-Synchrotron, 22607 Hamburg.
S
S
Yashchenko
Yonsei University, Seoul 120-749.
Y
Y
Yook
University of Science and Technology of China, Hefei 230026.
Z P
ZP
Zhang
Budker Institute of Nuclear Physics SB RAS and Novosibirsk State University, Novosibirsk 630090.
V
V
Zhilich
Budker Institute of Nuclear Physics SB RAS and Novosibirsk State University, Novosibirsk 630090.
V
V
Zhulanov
J. Stefan Institute, 1000 Ljubljana.
A
A
Zupanc