Institute: MPI für Physik     Collection: YB 2016     Display Documents

ID: 716475.0, MPI für Physik / YB 2016
Measurements of $B\\rightarrow \\bar{D} D_{s0} ^{*+}(2317)$ decay rates and a search for isospin partners of the $D_{s0}^{*+} (2317)$
Authors:
Date of Publication (YYYY-MM-DD):2015
Title of Journal:Physical Review D
Journal Abbrev.:Phys.Rev.D
Issue / Number:91
Start Page:092011
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:We report improved measurements of the product branching fractions ${\\mathcal B}(B^+\\rightarrow\\bar{D}^0 D_{s0}^{*+} (2317))\\times{\\mathcal B}( D_{s0} ^{*+}(2317)\\rightarrow D_s^{+}\\pi^0) =(8.0^{+1.3}_{-1.2} \\pm 1.1 \\pm 0.4)\\times 10^{-4}$ and ${\\mathcal B}(B^0\\rightarrow D^- D_{s0} ^{*+}(2317))\\times{\\mathcal B}(D_{s0}^{*+}(2317)\\rightarrow D_s^{+}\\pi^0) =(10.2^{+1.3}_{-1.2} \\pm 1.0 \\pm 0.4)\\times 10^{-4}$, where the first errors are statistical, the second are systematic and the third are from $D$ and $D_s$ branching fractions. In addition, we report negative results from a search for hypothesized neutral ($Z^0$) and doubly charged ($Z^{++}$) isospin partners of the $D_{s0}^{*+}(2317)$ and provide upper limits on the product branching fractions ${\\mathcal B}(B^0 \\rightarrow D^0 z^0)\\times{\\mathcal B}(z^0\\rightarrow D_s^{+}\\pi^-)$ and ${\\mathcal B}(B^+\\rightarrow D^- z^{++})\\times{\\mathcal B}(z^{++}\\rightarrow D_s^{+}\\pi^+)$ that are more than an order of magnitude smaller than theoretical expectations for the hypotheses that the $D_{s0} ^{*+}(2317)$ is a member of an isospin triplet. The analysis uses a 711 fb$^{-1}$ data sample containing 772 million $B\\bar{B}$ meson pairs collected at the $\\Upsilon(4S)$ resonance in the Belle detector at the KEKB collider.
Classification / Thesaurus:Belle II
Comment of the Author/Creator:11 pages, 7 figures, es2015apr10_546
External Publication Status:published
Document Type:Article
Communicated by:MPI für Physik
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