Journal article
Measurement of time-dependent CP violation in B0 → η′K0 decays
L Šantelj, Y Yusa, A Abdesselam, I Adachi, H Aihara, S Al Said, DM Asner, V Aulchenko, T Aushev, R Ayad, S Bahinipati, AM Bakich, V Bansal, V Bhardwaj, B Bhuyan, A Bondar, G Bonvicini, A Bozek, M Bračko, TE Browder Show all
Journal of High Energy Physics | Published : 2014
Abstract
© The Authors. We present a measurement of the time-dependent CP violation parameters in B 0 → η′K 0 decays. The measurement is based on the full data sample containing 772×10 6 B pairs collected at the ϒ(4S) resonance using the Belle detector at the KEKB asymmetric-energy e + e − collider. The measured values of the mixing-induced and direct CP violation parameters are: (equation found), (equation found), where the first uncertainty is statistical and the second is systematic. The values obtained are the most accurate to date. Furthermore, these results are consistent with our previous measurements and with the world-average value of sin 2ϕ1 measured in (equation found) decays.
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 of Korea
Awarded by BRL program under NRF
Awarded by Center for Korean J-PARC Users
Awarded by Basque Foundation for Science (IKERBASQUE) and the UPV/EHU under program
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. 10825524, No. 10875115, No. 10935008 and No. 11175187; 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; the WCU program of the Ministry of Education, Science and Technology, National Research Foundation of Korea Grants No. 2011-0029157, No. 2012-0008143, No. 2012R1A1A2008330, No. 2013R1A1A3007772; the BRL program under NRF Grant No. KRF-2011-0020333, No. KRF-2011-0021196, Center for Korean J-PARC Users, No. NRF-2013K1A3A7A06056592; the BK21 Plus program and the 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").