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Combined analysis of Belle and Belle II data to determine the CKM angle $$ phi_{3} $$ using $$B^+ to D(K_{S}^0 h^+ h^-) h^+$$ decays

Abudin$'e$n, F.*; 谷田 聖   ; Belle II Collaboration*; 他319名*

Abudin$'e$n, F.*; Tanida, Kiyoshi; Belle II Collaboration*; 319 of others*

We present a measurement of the Cabibbo-Kobayashi-Maskawa unitarity triangle angle $$ phi_{3} $$ (also known as~$$gamma$$) using a model-independent Dalitz plot analysis of $$B^+to Dleft(K_{S}^{0}h^{+}h^{-}right)h^+$$, where $$D$$ is either a $$D^0$$ or $$bar{D}{}^0$$ meson and $$h$$ is either a $$pi$$ 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 $$Upsilon(4S)$$ resonance. We measure $$phi_3 = left(78.4 pm 11.4 pm 0.5 pm 1.0 right)^{circ}$$, 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.

発表言語

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English

掲載資料名

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Journal of High Energy Physics (Internet)

巻

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2022

号

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2

ページ数

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p.63_1 - 63_33

発行年月

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2022/02

発表会議名

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開催年月

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開催都市

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開催国

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キーワード

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no keyword

特許データ

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PDF

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論文URL

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https://doi.org/10.1007/JHEP02(2022)063

研究データの公開先DOI

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本成果にかかわる研究データのリンクです。

使用施設

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広報プレスリリース

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論文解説
(JAEA R&D Navigator)

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受委託・共同研究相手機関

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Access

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- Accesses

InCites™

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パーセンタイル：54.64

分野：Physics, Particles & Fields

Altmetrics

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