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Title:First model-independent Dalitz analysis of $B^0 \to D^0K^{\ast 0}$, $D\to K_S^0\pi ^+\pi ^-$ decay
Authors:Negishi, K. (Author)
Biswal, Jyoti Prakash (Author)
Bračko, Marko (Author)
Golob, Boštjan (Author)
Korpar, Samo (Author)
Križan, Peter (Author)
Nanut, Tara (Author)
Pestotnik, Rok (Author)
Petrič, Marko (Author)
Ribežl, Eva (Author)
Stanič, Samo (Author)
Starič, Marko (Author)
Šantelj, Luka (Author)
Zupanc, Anže (Author), et al.
Files:.pdf Progress_of_Theoretical_and_Experimental_Physics_2016_Ishikawa_et_al._First_model-independent_Dalitz_analysis_of_B0→DK∗0,_D→KS0ππ−_decay.pdf (555,01 KB)
URL https://academic.oup.com/ptep/article-lookup/doi/10.1093/ptep/ptw030
Work type:Scientific work (r2)
Typology:1.01 - Original Scientific Article
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:We report a measurement of the amplitude ratio $r_S$ of $B^0 \to D^0K^{\ast 0}$ and $B^0 \to \bar {D^0}K^{\ast 0}$ 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 $711\,{\rm fb}^{-1}$ corresponding to $772\times 10^6$ $B\bar {B}$ pairs collected at the $\Upsilon (4S)$ resonance with the Belle detector at the KEKB $e^+e^-$ collider. This result is obtained from observables $x_- = +0.4 ^{+1.0 +0.0}_{-0.6 -0.1} \pm 0.0$, $y_- = -0.6 ^{+0.8 +0.1}_{-1.0 -0.0} \pm 0.1$, $x_+ = +0.1 ^{+0.7 +0.0}_{-0.4 -0.1} \pm 0.1$, and $y_+ = +0.3 ^{+0.5 +0.0}_{-0.8 -0.1} \pm 0.1$, 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 $B^0 \to D^0K^{\ast 0}$ and $B^0 \to \bar {D^0}K^{\ast 0}$.
Keywords:CO2, CO3, Cabibbo-Kobayashi-Maskawa quark-mixing matrix, CP violation, experimental particle physics
Year of publishing:2016
Number of pages:str. 043C01-1
Numbering:št. 4, Letn. 2016
ISSN on article:2050-3911
COBISS_ID:29823527 Link is opened in a new window
DOI:10.1093/ptep/ptw030 Link is opened in a new window
License:CC BY 4.0
This work is available under this license: Creative Commons Attribution 4.0 International
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Record is a part of a journal

Title:Progress of Theoretical and Experimental Physics
Shortened title:Prog. Theor. Exp. Phys.
Publisher:Oxford University Press
COBISS.SI-ID:2704635 New window

Secondary language

Keywords:CO2, C03, matrika Cabibbo-Kobayashi-Maskawa, matrika CKM, kršitev simetrije CP, eksperimentalna fizika delcev


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