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  • Measurement of the branching fraction of the decay ▫$B^- \to D^0 \rho(770)^-$▫ at Belle II
    Adachi, Ichiro ...
    We measure the branching fraction of the decay 𝐵−→𝐷0⁢𝜌⁢(770)− using data collected with the Belle II detector. The data contain 387 million 𝐵⁢ ¯ 𝐵 pairs produced in 𝑒+⁢𝑒− collisions at the ... ϒ⁡(4⁢𝑆) resonance. We reconstruct 8360±180 decays from an analysis of the distributions of the 𝐵− energy and the 𝜌⁢(770)− helicity angle. We determine the branching fraction to be (0.939±0.021⁢(stat)±0.050⁢(syst))%, in agreement with previous results. Our measurement improves the relative precision of the world average by more than a factor of two.
    Vir: Physical review. D. [Elektronski vir]. - ISSN 2470-0029 (Vol. 109, L111103, no. 11, 2024, str. L111103-1- L111103-8)
    Vrsta gradiva - e-članek ; neleposlovje za odrasle
    Leto - 2024
    Jezik - angleški
    COBISS.SI-ID - 202281731