Journal article
Observation of an alternative chi(c0)(2P) candidate in e( )e(-)-> J/psi D(D)over-bar
K Chilikin, I Adachi, H Aihara, S Al Said, DM Asner, V Aulchenko, R Ayad, V Babu, I Badhrees, AM Bakich, V Bansal, E Barberio, D Besson, V Bhardwaj, B Bhuyan, J Biswal, A Bobrov, A Bondar, A Bozek, M Bracko Show all
PHYSICAL REVIEW D | AMER PHYSICAL SOC | Published : 2017
Abstract
We perform a full amplitude analysis of the process e+e-→J/ψDD, where D refers to either D0 or D+. A new charmoniumlike state X∗(3860) that decays to DD is observed with a significance of 6.5σ. Its mass is (3862-32+26 -13+40) MeV/c2, and its width is (201-67+154 -82+88) MeV. The JPC=0++ hypothesis is favored over the 2++ hypothesis at the level of 2.5σ. The analysis is based on the 980 fb-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 World-Class University (WCU) program of the Ministry of Education, National Research Foundation (NRF) of Korea
Awarded by Korean Institute for Basic Science Project
Awarded by Ministry of Education and Science of the Russian Federation
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 SINET5 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); the Tau-Lepton Physics Research Center of Nagoya University; the Australian Research Council; Austrian Science Fund under Grant No. P 26794-N20; the National Natural Science Foundation of China under Contracts No. 10575109, No. 10775142, No. 10875115, No. 11175187, No. 11475187, No. 11521505, and No. 11575017; the Chinese Academy of Science Center for Excellence in Particle Physics; the Ministry of Education, Youth and Sports of the Czech Republic under Contract No. LTT17020; the Carl Zeiss Foundation, the Deutsche Forschungsgemeinschaft, the Excellence Cluster Universe, and the VolkswagenStiftung; the Department of Science and Technology of India; the Istituto Nazionale di Fisica Nucleare of Italy; the World-Class University (WCU) program of the Ministry of Education, National Research Foundation (NRF) of Korea, Grants No. 2011-0029457, No. 2012-0008143, No. 2014R1A2A2A01005286, No. 2014R1A2A2A01002734, No. 2015R1A2A2A01003280, No. 2015H1A2A1033649, No. 2016R1D1A1B01010135, No. 2016K1A3A7A09005603, No. 2016K1A3A7A09005604, No. 2016R1D1A1B02012900, No. 2016K1A3A7A09005606, and No. NRF-2013K1A3A7A06056592; Korean Institute for Basic Science Project Code IBS-R016-D1; the Brain Korea 21-Plus program, Radiation Science Research Institute, Foreign Large-Size Research Facility Application Supporting Project 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 under Contracts No. 14.A12.31.0006 and No. 3.2989.2017 and the Russian Foundation for Basic Research; the Slovenian Research Agency; Ikerbasque, Basque Foundation for Science and the Euskal Herriko Unibertsitatea (UPV/EHU) under Program No. UFI 11/55 (Spain); the Swiss National Science Foundation; the Ministry of Education and the Ministry of Science and Technology of Taiwan; and the U.S. Department of Energy and the National Science Foundation.