Observation of Z_{b}(10610) and Z_{b}(10650) Decaying to B Mesons.
We report the analysis of the three-body e^{+}e^{-}→BB[over ¯]π^{±}, BB[over ¯]^{*}π^{±}, and B^{*}B[over ¯]^{*}π^{±} processes, including the first observations of the Z_{b}^{±}(10610)→[BB[over ¯]^{*}+c.c.]^{±} and Z_{b}^{±}(10650)→[B^{*}B[over ¯]^{*}]^{±} transitions that are found to dominate the corresponding final states. We measure Born cross sections for the three-body production of σ(e^{+}e^{-}→[BB[over ¯]^{*}+c.c.]^{±}π^{∓})=[17.4±1.6(stat)±1.9(syst)]  pb and σ(e^{+}e^{-}→[B^{*}B[over ¯]^{*}]^{±}π^{∓})=[8.75±1.15(stat)±1.04(syst)]  pb and set a 90% C.L. upper limit of σ(e^{+}e^{-}→[BB[over ¯]]^{±}π^{∓})<2.9  pb. The results are based on a 121.4  fb^{-1} data sample collected with the Belle detector at a center-of-mass energy near the ϒ(10860) peak.
Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090.|Novosibirsk State University, Novosibirsk 630090.
A
A
Garmash
Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451.
A
A
Abdesselam
SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193.|High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
I
I
Adachi
Department of Physics, University of Tokyo, Tokyo 113-0033.
H
H
Aihara
Pacific Northwest National Laboratory, Richland, Washington 99352.
D M
DM
Asner
Moscow Institute of Physics and Technology, Moscow Region 141700.
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T
Aushev
Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451.
R
R
Ayad
Tata Institute of Fundamental Research, Mumbai 400005.
T
T
Aziz
Tata Institute of Fundamental Research, Mumbai 400005.
V
V
Babu
King Abdulaziz City for Science and Technology, Riyadh 11442.|Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451.
I
I
Badhrees
School of Physics, University of Sydney, New South Wales 2006.
A M
AM
Bakich
Indian Institute of Technology Madras, Chennai 600036.
P
P
Behera
University of South Carolina, Columbia, South Carolina 29208.
V
V
Bhardwaj
Indian Institute of Technology Guwahati, Assam 781039.
B
B
Bhuyan
Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090.|Novosibirsk State University, Novosibirsk 630090.
A
A
Bobrov
Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090.|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
Moscow Physical Engineering Institute, Moscow 115409.
K
K
Chilikin
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
Moscow Physical Engineering Institute, Moscow 115409.
M
M
Danilov
Indian Institute of Technology Bhubaneswar, Satya Nagar 751007.
N
N
Dash
Faculty of Mathematics and Physics, Charles University, 121 16 Prague.
Z
Z
Doležal
Moscow Physical Engineering Institute, Moscow 115409.
A
A
Drutskoy
Tata Institute of Fundamental Research, Mumbai 400005.
D
D
Dutta
Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090.|Novosibirsk State University, Novosibirsk 630090.
S
S
Eidelman
Department of Physics, University of Tokyo, Tokyo 113-0033.
D
D
Epifanov
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
Pacific Northwest National Laboratory, Richland, Washington 99352.
B G
BG
Fulsom
Tata Institute of Fundamental Research, Mumbai 400005.
V
V
Gaur
Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090.|Novosibirsk State University, Novosibirsk 630090.
N
N
Gabyshev
Wayne State University, Detroit, Michigan 48202.
R
R
Gillard
Hanyang University, Seoul 133-791.
Y M
YM
Goh
Institut für Experimentelle Kernphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe.
P
P
Goldenzweig
J. Stefan Institute, 1000 Ljubljana.|Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana.
B
B
Golob
SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193.|High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
T
T
Hara
Kobayashi-Maskawa Institute, Nagoya University, Nagoya 464-8602.
K
K
Hayasaka
Nara Women's University, Nara 630-8506.
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Hayashii
Graduate School of Science, Nagoya University, Nagoya 464-8602.|Kobayashi-Maskawa Institute, Nagoya University, Nagoya 464-8602.
T
T
Iijima
Tohoku University, Sendai 980-8578.
A
A
Ishikawa
SOKENDAI (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
Chonnam National University, Kwangju 660-701.
K K
KK
Joo
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
Soongsil University, Seoul 156-743.
D Y
DY
Kim
Korea University, Seoul 136-713.
J B
JB
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
University of Cincinnati, Cincinnati, Ohio 45221.
K
K
Kinoshita
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, Novosibirsk 630090.|Novosibirsk State University, Novosibirsk 630090.
P
P
Krokovny
Ludwig Maximilians University, 80539 Munich.
T
T
Kuhr
Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090.|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
School of Physics, University of Melbourne, Victoria 3010.
C
C
Li
Indiana University, Bloomington, Indiana 47408.
H
H
Li
University of Science and Technology of China, Hefei 230026.
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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.|CNP, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061.
D
D
Liventsev
Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090.|Novosibirsk State University, Novosibirsk 630090.
P
P
Lukin
Earthquake Research Institute, University of Tokyo, Tokyo 113-0032.
M
M
Masuda
Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090.|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
Moscow Physical Engineering Institute, Moscow 115409.|Moscow Institute of Physics and Technology, Moscow Region 141700.
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
Graduate School of Science, Nagoya University, Nagoya 464-8602.
T
T
Mori
INFN-Sezione di Torino, 10125 Torino.
R
R
Mussa
Osaka City University, Osaka 558-8585.
E
E
Nakano
SOKENDAI (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
SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193.|High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
S
S
Nishida
Seoul National University, Seoul 151-742.
S L
SL
Olsen
Moscow Physical Engineering Institute, Moscow 115409.
P
P
Pakhlov
Moscow Institute of Physics and Technology, Moscow Region 141700.
G
G
Pakhlova
University of Cincinnati, Cincinnati, Ohio 45221.
B
B
Pal
Kyungpook National University, Daegu 702-701.
H
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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
Institut für Experimentelle Kernphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe.
C
C
Pulvermacher
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
University of Hawaii, Honolulu, Hawaii 96822.
H
H
Sahoo
SOKENDAI (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
Tohoku University, Sendai 980-8578.
T
T
Sanuki
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
Niigata University, Niigata 950-2181.
Y
Y
Seino
Justus-Liebig-Universität Gießen, 35392 Gießen.
D
D
Semmler
Yamagata University, Yamagata 990-8560.
K
K
Senyo
University of Hawaii, Honolulu, Hawaii 96822.
I S
IS
Seong
School of Physics, University of Melbourne, Victoria 3010.
M E
ME
Sevior
Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090.|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, Novosibirsk 630090.|Novosibirsk State University, Novosibirsk 630090.
B
B
Shwartz
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
Moscow Institute of Physics and Technology, Moscow Region 141700.
E
E
Solovieva
J. Stefan Institute, 1000 Ljubljana.
M
M
Starič
Tokyo Metropolitan University, Tokyo 192-0397.
T
T
Sumiyoshi
INFN-Sezione di Torino, 10125 Torino.|University of Torino, 10124 Torino.
U
U
Tamponi
Seoul National University, Seoul 151-742.
K
K
Tanida
Osaka City University, Osaka 558-8585.
Y
Y
Teramoto
SOKENDAI (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
SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193.|High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
S
S
Uehara
Moscow Institute of Physics and Technology, Moscow Region 141700.
T
T
Uglov
SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193.|High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
S
S
Uno
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, Novosibirsk 630090.|Novosibirsk State University, Novosibirsk 630090.
V
V
Vorobyev
Justus-Liebig-Universität Gießen, 35392 Gießen.
M N
MN
Wagner
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
Tohoku University, Sendai 980-8578.
H
H
Yamamoto
Pacific Northwest National Laboratory, Richland, Washington 99352.
J
J
Yamaoka
Deutsches Elektronen-Synchrotron, 22607 Hamburg.
S
S
Yashchenko
University of Florida, Gainesville, Florida 32611.
J
J
Yelton
Yonsei University, Seoul 120-749.
Y
Y
Yook
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049.
C Z
CZ
Yuan
University of Science and Technology of China, Hefei 230026.
Z P
ZP
Zhang
Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090.|Novosibirsk State University, Novosibirsk 630090.
V
V
Zhilich
Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090.|Novosibirsk State University, Novosibirsk 630090.
V
V
Zhulanov
J. Stefan Institute, 1000 Ljubljana.
A
A
Zupanc