اشترك بالحزمة الذهبية واحصل على وصول غير محدود شمرا أكاديميا
تسجيل مستخدم جديدAngular analysis of $B^0 to phi K^{*}$ decays and search for CP violation at Belle
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We report the measurements of branching fractions and CP violation asymmetries in $B^0 to phi K^{*}$ decays obtained in an angular analysis using the full data sample of $772 times 10^6 Bbar{B}$ pairs collected at the $Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. We perform a partial wave analysis to distinguish among scalar [$B^0 to phi(Kpi)^{*}_{0}$], vector [$B^0 to phi K^{*}(892)^{0}$] and tensor [$B^0 to phi K^{*}_{2}(1430)^{0}$] components, and determine the corresponding branching fractions to be $mathcal{B}[B^0 to phi(Kpi)^{*}_{0}] = (4.3 pm 0.4 pm 0.4) times 10^{-6}$, $mathcal{B}[B^0 to phi K^{*}(892)^{0}] = (10.4 pm 0.5 pm 0.6) times 10^{-6}$ and $mathcal{B}[B^0 to phi K^{*}_{2}(1430)^{0}] = (5.5 ^{+0.9}_{-0.7} pm 1.0) times 10^{-6}$. We also measure the longitudinal polarization fraction $f_L$ in $B^0 to phi K^{*}(892)^{0}$ and $B^0 to phi K^{*}_{2}(1430)^{0}$ decays to be $0.499 pm 0.030 pm 0.018$ and $0.918 ^{+0.029}_{-0.060} pm 0.012$, respectively. The first quoted uncertainties are statistical and the second are systematic. In total, we measure 26 parameters related to branching fractions, polarization and CP violation in the $B^0 to phi K^{*}$ system. No evidence for CP violation is found.
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