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  • Combined analysis of Belle and Belle II data to determine the CKM angle ϕ 3 using B + → D( K S 0 $$ {K}_S^0 $$ h + h − )h + decays
    S. Al Said; V. Aushev; Sw. Banerjee; J. Becker; E. Bertholet; M. Bessner; S. Bettarini; A. Bozek; M. Bračko; C. Cecchi; P. Cheema; V. Chekelian; B. G. Cheon; K. Chirapatpimol; H.-E. Cho; S.-J. Cho; T. Czank; S. Das; F. Dattola; G. de Marino; G. De Nardo; G. De Pietro; R. de Sangro; S. Dey; R. Dhamija; Z. Doležal; I. Domínguez Jiménez; T. Fillinger; A. Fodor; F. Forti; E. Ganiev; A. Gaz; R. Giordano; A. Giri; W. Gradl; T. Gu; Y. Guan; K. Gudkova; C. Hadjivasiliou; I. Heredia de la Cruz; E. C. Hill; W.-S. Hou; C.-L. Hsu; K. Inami; A. B. Kaliyar; C.-H. Kim; P. Kodyš; S. Korpar; S. Lacaprara; L. Lanceri; P. Leitl; S. X. Li; J. Libby; K. Lieret; Z. Liptak; S. Longo; C. Lyu; S. Maity; S. Marcello; M. Masuda; K. Matsuoka; D. Matvienko; J. A. McKenna; C. Miller; H.-G. Moser; F. Mueller; K. R. Nakamura; L. Nayak; G. Nazaryan; G. Pakhlova; A. Panta; E. Paoloni; S.-H. Park; A. Passeri; S. Patra; R. Pestotnik; M. T. Prim; S. Raiz; L. B. Rizzuto; J. M. Roney; N. Rout; S. Sandilya; L. Santelj; A. J. Schwartz; M. E. Sevior; C. Sharma; A. Sibidanov; Z. S. Stottler; R. Stroili; K. Sumisawa; E. Torassa; M. Uchida; T. Uglov; K. Uno; S. Uno; S. E. Vahsen; K. E. Varvell; H. Ye; K. Yoshihara; Y. Zhang

    The journal of high energy physics, 02/2022, Letnik: 2022, Številka: 2
    Journal Article

    Abstract We present a measurement of the Cabibbo-Kobayashi-Maskawa unitarity triangle angle ϕ 3 (also known as γ) using a model-independent Dalitz plot analysis of B + → D ( K S 0 $$ {K}_S^0 $$ h + h − )h +, where D is either a D 0 or D ¯ $$ \overline{D} $$ 0 meson and h is either a π or K. This is the first measurement that simultaneously uses Belle and Belle II data, combining samples corresponding to integrated luminosities of 711 fb −1 and 128 fb −1, respectively. All data were accumulated from energy-asymmetric e + e − collisions at a centre-of-mass energy corresponding to the mass of the Υ(4S) resonance. We measure ϕ 3 = (78.4 ± 11.4 ± 0.5 ± 1.0)°, where the first uncertainty is statistical, the second is the experimental systematic uncertainty and the third is from the uncertainties on external measurements of the D-decay strong-phase parameters.

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