Measurement of the branching fraction and search for CP violation in D0 → KS0 KS0 π π- decays at Belle

A Sangal; AJ Schwartz; H Aihara; S Al Said; DM Asner; H Atmacan; V Aulchenko; T Aushev; R Ayad; V Babu; S Bahinipati; P Behera; K Belous; J Bennett; M Bessner; V Bhardwaj; B Bhuyan; T Bilka; D Bodrov; G Bonvicini; J Borah; A Bozek; M Bračko; P Branchini; TE Browder; A Budano; D Červenkov; A Chen; BG Cheon; K Chilikin; K Cho; SJ Cho; SK Choi; Y Choi; S Choudhury; D Cinabro; N Dash; G De Pietro; R Dhamija; F Di Capua; Z DoleŽal; TV Dong; D Dossett; D Epifanov; A Frey; BG Fulsom; R Garg; V Gaur; N Gabyshev; A Garmash; A Giri; P Goldenzweig; E Graziani; Y Guan; K Gudkova; C Hadjivasiliou; K Hayasaka; H Hayashii; D Herrmann; WS Hou; CL Hsu; K Inami; N Ipsita; A Ishikawa; R Itoh; M Iwasaki; WW Jacobs; EJ Jang; S Jia; Y Jin; KK Joo; KH Kang; T Kawasaki; C Kiesling; CH Kim; DY Kim; KH Kim; K Kinoshita; P Kodyš; T Konno; A Korobov; S Korpar; E Kovalenko; P KriŽan; P Krokovny; M Kumar; R Kumar; K Kumara; YJ Kwon; T Lam; JS Lange; M Laurenza; SC Lee; CH Li; LK Li; Y Li; YB Li; L Li Gioi; J Libby; K Lieret

Journal article

Measurement of the branching fraction and search for CP violation in D0 → KS0 KS0 π π- decays at Belle

A Sangal, AJ Schwartz, H Aihara, S Al Said, DM Asner, H Atmacan, V Aulchenko, T Aushev, R Ayad, V Babu, S Bahinipati, P Behera, K Belous, J Bennett, M Bessner, V Bhardwaj, B Bhuyan, T Bilka, D Bodrov, G Bonvicini Show all

Physical Review D | Published : 2023

DOI: 10.1103/PhysRevD.107.052001

Abstract

We measure the branching fraction for the Cabibbo-suppressed decay D0→KS0KS0π+π- and search for CP violation via a measurement of the CP asymmetry ACP as well as the T-odd triple-product asymmetry aCPT. We use 922 fb-1 of data recorded by the Belle experiment, which ran at the KEKB asymmetric-energy e+e- collider. The branching fraction is measured relative to the Cabibbo-favored normalization channel D0→KS0π+π-; the result is B(D0→KS0KS0π+π-)=[4.79±0.08(stat)±0.10(syst)±0.31(norm)]×10-4, where the first uncertainty is statistical, the second is systematic, and the third is from uncertainty in the normalization channel. We also measure ACP=[-2.51±1.44(stat)-0.10+0.11(syst)]%, and aCPT=[-1.95..

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University of Melbourne Researchers

Martin Sevior Author

Eiasha Waheed Author

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Funding Acknowledgements

This work, based on data collected using the Belle detector, which was operated until June 2010, was supported by 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 including Grants No. DP180102629, No. DP170102389, No. DP170102204, No. DE220100462, No. DP150103061, No. FT130100303; Austrian Federal Ministry of Education, Science and Research (FWF) and FWF Austrian Science Fund No. P 31361-N36; the National Natural Science Foundation of China under Contracts No. 11675166, No. 11705209; No. 11975076; No. 12135005; No. 12175041; No. 12161141008; Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS) , Grant No. QYZDJ-SSW-SLH011; Project ZR2022JQ02 supported by Shandong Provincial Natural Science Foundation; the Ministry of Education, Youth and Sports of the Czech Republic under Contract No. LTT17020; the Czech Science Foundation Grant No. 22-18469S; Horizon 2020 ERC Advanced Grant No. 884719 and ERC Starting Grant No. 947006 "InterLeptons" (European Union) ; the Carl Zeiss Foundation, the Deutsche Forschungsgemeinschaft, the Excellence Cluster Universe, and the VolkswagenStiftung; the Department of Atomic Energy (Project Identification No. RTI 4002) and the<STRONG> Department of Science and Technology of India; the Istituto Nazionale di Fisica Nucleare of Italy</STRONG>; National Research Foundation (NRF) of Korea Grants No. 2016R1D1A1B02012900, No. 2018R1A2B3003643, No. 2018R1A6A1A06024970, No. RS202200197659, No. 2019R1I1A3A01058933, No. 2021R1A6A1A03043957, No. 2021R1F1A1060423, No. 2021R1F1A1064008, No. 2022R1A2C1003993; Radiation Science Research Institute, Foreign Large-size Research Facility Application Supporting project, the Global Science Experimental Data Hub Center of the Korea Institute of Science and Technology Information and KREONET/GLORIAD; the Polish Ministry of Science and Higher Education and the National Science Center; the Ministry of Science and Higher Education of the Russian Federation, Agreement 14.W03.31.0026, and the HSE University Basic Research Program, Moscow; University of Tabuk research Grants No. S-1440-0321, No. S-0256-1438, and No. S-0280-1439 (Saudi Arabia) ; the Slovenian Research Agency Grants No. J1-9124 and No. P1-0135; Ikerbasque, Basque Foundation for Science, Spain; the Swiss National Science Foundation; the Ministry of Education and the Ministry of Science and Technology of Taiwan; and the United States Department of Energy and the National Science Foundation. These acknowledgements are not to be interpreted as an endorsement of any statement made by any of our institutes, funding agencies, governments, or their representatives. 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 and the Pacific Northwest National Laboratory (PNNL) Environmental Molecular Sciences Laboratory (EMSL) computing group for strong computing support; and the National Institute of Informatics, and Science Information NETwork 6 (SINET6) for valuable network support.