Journal article
First observation of the Zb0(10610) in a Dalitz analysis of Υ(10860)→Υ(nS)π0π0
P Krokovny, A Bondar, I Adachi, H Aihara, K Arinstein, DM Asner, V Aulchenko, T Aushev, T Aziz, AM Bakich, A Bala, A Bay, V Bhardwaj, B Bhuyan, G Bonvicini, C Bookwalter, A Bozek, M Bračko, TE Browder, P Chang Show all
Physical Review D Particles Fields Gravitation and Cosmology | Published : 2013
Abstract
We report the first observation of Υ(10860)→Υ(1,2,3S) π0π0 decays. The neutral partner of the Zb±(10610), the Zb0(10610) decaying to Υ(2,3S)π0, is observed for the first time with a 6.5σ significance using a Dalitz analysis of Υ(10860)→Υ(2,3S) π0π0 decays. The results are obtained with a 121.4 fb-1 data sample collected with the Belle detector at the Υ(10860) resonance at the KEKB asymmetric-energy e+e- collider. © 2013 American Physical Society.
Grants
Awarded by Austrian Science Fund
Awarded by National Natural Science Foundation of China
Awarded by Ministry of Education, Youth and Sports of the Czech Republic
Awarded by BK21 and WCU program of the Ministry Education Science and Technology, National Research Foundation of Korea
Awarded by NRF
Awarded by UPV/EHU
Awarded by Russian Foundation for Basic Research
Awarded by Russian Federation government
Funding Acknowledgements
We thank the KEKB group for the excellent operation of the accelerator; the KEK cryogenics group for the efficient operation of the solenoid; and the KEK computer group, the National Institute of Informatics, and the PNNL/EMSL computing group for valuable computing and SINET4 network support. We acknowledge support from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan, the Japan Society for the Promotion of Science (JSPS), and the Tau-Lepton Physics Research Center of Nagoya University; the Australian Research Council and the Australian Department of Industry, Innovation, Science and Research; Austrian Science Fund under Grant No. P 22742-N16; the National Natural Science Foundation of China under Contracts No. 10575109, No. 10775142, No. 10875115, and No. 10825524; the Ministry of Education, Youth and Sports of the Czech Republic under Contract No. MSM0021620859; the Carl Zeiss Foundation, the Deutsche Forschungsgemeinschaft, and the VolkswagenStiftung; the Department of Science and Technology of India; the Istituto Nazionale di Fisica Nucleare of Italy; the BK21 and WCU program of the Ministry Education Science and Technology, National Research Foundation of Korea Grants No. 20100021174, No. 2011-0029457, No. 2012-0008143, No. 2012R1A1A2008330, BRL program under NRF Grant No. KRF-2011-0020333, and GSDC of the Korea Institute of Science and Technology Information; the Polish Ministry of Science and Higher Education and the National Science Center; the Ministry of Education and Science of the Russian Federation and the Russian Federal Agency for Atomic Energy; the Slovenian Research Agency; the Basque Foundation for Science (IKERBASQUE) and the UPV/EHU under program UFI 11/55; the Swiss National Science Foundation; the National Science Council and the Ministry of Education of Taiwan; and the U.S. Department of Energy and the National Science Foundation. This work is supported by a Grant-in-Aid from MEXT for Science Research in a Priority Area ("New Development of Flavor Physics''), and from JSPS for Creative Scientific Research ("Evolution of Tau-Lepton Physics''). This work is partially supported by grants of the Russian Foundation for Basic Research, Grants No. 12-02-00862, No. 12-02-01296, No. 12-02-01032, and No. 12-02-33015, and by the grant of the Russian Federation government, Grant No. 11.G34.31.0047.