Journal article
Observation of a new charged charmoniumlike state in B ¯ 0 →j/ψK-π decays observation of a new charged charmoniumlike ... K. Chilikin et al.
K Chilikin, R Mizuk, I Adachi, H Aihara, S Al Said, K Arinstein, DM Asner, V Aulchenko, T Aushev, R Ayad, T Aziz, AM Bakich, V Bansal, A Bondar, G Bonvicini, A Bozek, M Bračko, TE Browder, D Červenkov, V Chekelian Show all
Physical Review D Particles Fields Gravitation and Cosmology | Published : 2014
Abstract
We present the results of an amplitude analysis of B¯0→J/ψK-π+ decays. A new charged charmoniumlike state Zc(4200)+ decaying to J/ψπ+ is observed with a significance of 6.2σ. The mass and width of the Zc(4200)+ are 4196-29-13+31+17MeV/c2 and 370-70-132+70+70MeV, respectively; the preferred assignment of the quantum numbers is JP=1+. In addition, we find evidence for Zc(4430)+→J/ψπ+. The analysis is based on a 711fb-1 data sample collected by the Belle detector at the asymmetric-energy e+e- collider KEKB.
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 National Research Foundation (NRF) of Korea
Awarded by Basic Research Lab program under NRF
Awarded by Center for Korean J-PARCUsers
Awarded by Ministry of Education and Science of the Russian Federation
Awarded by Russian Foundation for Basic Research
Awarded by Euskal Herriko Unibertsitatea (UPV/EHU) (Spain)
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 Grants No. P 22742-N16 and No. P 26794-N20; the National Natural Science Foundation of China under Contracts No. 10575109, No. 10775142, No. 10875115, No. 11175187, and No. 11475187; the Ministry of Education, Youth and Sports of the Czech Republic under Contract No. LG14034; 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; National Research Foundation (NRF) of Korea Grants No. 2011-0029457, No. 2012-0008143, No. 2012R1A1A2008330, No. 2013R1A1A3007772, No. 2014R1A2A2A01005286, No. 2014R1A2A2A01002734, No. 2014R1A1A2006456; the Basic Research Lab program under NRF Grants No. KRF-2011-0020333 and No. KRF-2011- 0021196, Center for Korean J-PARCUsers, No. NRF-2013K1A3A7A06056592; the Brain Korea 21-Plus program and the Global Science Experimental Data Hub Center 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 (particularly under Contract No. 14.A12.31.0006), the Russian Federal Agency for Atomic Energy and the Russian Foundation for Basic Research under Grant No. 14-02-01220; the Slovenian Research Agency; the Basque Foundation for Science (IKERBASQUE) and the Euskal Herriko Unibertsitatea (UPV/EHU) under program UFI 11/55 (Spain); 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").