Аннотация

We present a measurement of the Cabibbo-Kobayashi-Maskawa unitarity triangle angle ϕ3 (also known as γ) using a model-independent Dalitz plot analysis of B+ → D (KS0h+h)h+, where D is either a D0 or 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 ϕ3 = (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. [Figure not available: see fulltext.]

Язык оригиналаанглийский
Номер статьи63
ЖурналJournal of High Energy Physics
Том2022
Номер выпуска2
DOI
СостояниеОпубликовано - фев 2022

Предметные области OECD FOS+WOS

  • 1.03 ФИЗИЧЕСКИЕ НАУКИ И АСТРОНОМИЯ

Fingerprint

Подробные сведения о темах исследования «Combined analysis of Belle and Belle II data to determine the CKM angle ϕ 3 using B + → D(KS0 h + h )h + decays». Вместе они формируют уникальный семантический отпечаток (fingerprint).

Цитировать