Institute: MPI für Physik     Collection: YB 2016     Display Documents

ID: 716477.0, MPI für Physik / YB 2016
First model-independent Dalitz analysis of $B^0 \\to DK^{*0}$, $D\\to K_S^0\\pi^+\\pi^-$ decay
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Audience:Not Specified
Intended Educational Use:No
Abstract / Description:We report a measurement of the amplitude ratio $r_S$ of $B^0 \\to D^0K^{*0}$ and $B^0 \\to \\bar{D^0}K^{*0}$ decays with a Dalitz analysis of $D\\to K_S^0\\pi^+\\pi^-$ decays, for the first time using a model-independent method. We set an upper limit $r_S < 0.87$ at the 68\\% confidence level, using the full data sample of $772\\times10^6$ $B\\bar{B}$ pairs collected at the $\\Upsilon(4S)$ resonance with the Belle detector at the KEKB $e^+e^-$ collider. This result is obtained from observables $x_- = +0.4 ^{+1.0 +0.0}_{-0.6 -0.1} \\pm0.0$, $y_- = -0.6 ^{+0.8 +0.1}_{-1.0 -0.0} \\pm0.1$, $x_+ = +0.1 ^{+0.7 +0.0}_{-0.4 -0.1} \\pm0.1$ and $y_+ = +0.3 ^{+0.5 +0.0}_{-0.8 -0.1} \\pm0.1$, where $x_\\pm = r_S \\cos(\\delta_S \\pm \\phi_3)$, $y_\\pm = r_S \\sin(\\delta_S \\pm \\phi_3)$ and $\\phi_3~(\\delta_S)$ is the weak (strong) phase difference between $B^0 \\to D^0K^{*0}$ and $B^0 \\to \\bar{D^0}K^{*0}$.
Classification / Thesaurus:Belle II
Comment of the Author/Creator:arXiv admin note: substantial text overlap with href{/abs/1502.07550}{arXiv:1502.07550}
Document Type:Article
Communicated by:MPI für Physik
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