2015/04/30 by S.-K. Choi, The Belle Collaboration, S. -K. Choi +187 · 17 citations
Chemistry · Mathematics · Physics and Astronomy · #Analytical Chemistry (journal) #Bar (unit) #Branching (polymer chemistry) #Branching fraction #Chemistry #Collider #Crystallography #Geometry #High-Energy Particle Collisions Research #Isospin #KEKB #Materials science #Mathematics #Order (exchange) #Particle physics #Particle physics theoretical and experimental studies #Physics #Product (mathematics) #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.1103/physrevd.91.092011
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 91(9) (American Physical Society) · 11 pages, 7 figures, es2015apr10_546
openalex publication_date 2015/05/28 · arxiv created 2015/08/06 · arxiv updated 2015/08/07 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
We report improved measurements of the product branching fractions B(B+\ensuremath→D0Ds0*+(2317))\ifmmode×\else\texttimes\fiB(Ds0*+(2317)\ensuremath→Ds+\ensuremathπ0)=(8.0_\ensuremath-1.2+1.3\ifmmode±\else\textpm\fi1.1\ifmmode±\else\textpm\fi0.4)\ifmmode×\else\texttimes\fi10^\ensuremath-4 and B(B0\ensuremath→D^\ensuremath-Ds0*+(2317))\ifmmode×\else\texttimes\fiB(Ds0*+(2317)\ensuremath→\phantom\rule0ex0exDs+\ensuremathπ0)=(10.2_\ensuremath-1.2+1.3\ifmmode±\else\textpm\fi1.0\ifmmode±\else\textpm\fi0.4)\ifmmode×\else\texttimes\fi10^\ensuremath-4, where the first errors are statistical, the second are systematic and the third are from D and Ds+ branching fractions. In addition, we report negative results from a search for hypothesized neutral (z0) and doubly charged (z++) isospin partners of the Ds0*+(2317) and provide upper limits on the product branching fractions B(B0\ensuremath→D0z0)\ifmmode×\else\texttimes\fiB(z0\ensuremath→Ds+\ensuremathπ^\ensuremath-) and B(B+\ensuremath→D^\ensuremath-z++)\ifmmode×\else\texttimes\fiB(z++\ensuremath→Ds+\ensuremathπ+) that are more than an order of magnitude smaller than theoretical expectations for the hypotheses that the Ds0*+(2317) is a member of an isospin triplet. The analysis uses a 711 fb^\ensuremath-1 data sample containing 772 million BB-meson pairs collected at the \mathrm\ensuremathΥ(4S) resonance in the Belle detector at the KEKB collider.