1,183 research outputs found
First measurement of the CKM angle ϕ3 with B±→ D(π+π−π0) K± decays
No full textA bstract We present the first model-independent measurement of the CKM unitarity triangle angle ϕ 3 using B ± → D ( K S 0 π + π − π 0 ) K ± decays, where D indicates either a D 0 or D ¯ 0 meson. Measurements of the strong-phase difference of the D → K S 0 π + π − π 0 amplitude obtained from CLEO-c data are used as input. This analysis is based on the full Belle data set of 772 × 10 6 B B ¯ events collected at the Υ(4 S ) resonance. We obtain ϕ 3 = ( 5.7 − 8.8 + 10.2 ± 3 . 5 ± 5 . 7) ° and the suppressed amplitude ratio r B = 0 . 323 ± 0 . 147 ± 0 . 023 ± 0 . 051. Here the first uncertainty is statistical, the second is the experimental systematic, and the third is due to the precision of the strong-phase parameters measured from CLEO-c data. The 95% confidence interval on ϕ 3 is ( − 29 . 7 , 109 . 5) ° , which is consistent with the current world average
STUDI KUALITAS PUPUK FOSFOR (P) DAN KALIUM (K) YANG DIJUAL DI KIOS PENYALUR RESMI PUPUK DI KABUPATEN BOGOR, CIANJUR, DAN SUKABUMI, JAWA BARAT
No full textPeredaran pupuk anorganik fosfor (P) dan kalium (K) semakin merajalela dan memprihatinkan. Penjualan pupuk yang tidak berkualitas ini, jelas sangat merugikan petani dan pemerintah karena dapat menggagalkan panen petani dan sekaligus juga dapat menggagalkan program Pemerintah seperti Program Peningkatan Produksi Beras Nasional (P2BN) dan Program Ketahanan serta Keamanan Pangan. Pemerintah telah membentuk Komisi Pengawasan Pupuk dan Pestisida (KP3) di setiap kabupaten dan kota, yang bertugas melakukan pengawasan peredaran dan kualitas pupuk dan pestisida, akan tetapi badan ini tidak dapat menjalankan fungsinya dengan baik. Studi ini dilakukan dengan tujuan untuk mengetahui kualitas pupuk P dan K yang dijual ke masyarakat di kios resmi penyalur pupuk di tiga kabupaten yaitu Bogor, Cianjur dan Sukabumi. Kios resmi penjual pupuk dipilih berdasarkan kecamatan penyaluran pupuk subsidi untuk tanaman pangan dan hortikultura. Dalam studi ini telah diambil 29 contoh pupuk yang terdiri atas: 10 contoh pupuk SP-36, 10 contoh pupuk P selain SP-36, dan 9 contoh pupuk K. Hasil analisis contoh pupuk menunjukkan bahwa pupuk SP-36 yang dijual di kios resmi memiliki kualitas yang baik dengan kadar P2O5 sekitar 35-36% P2O5. Namun pupuk P selain SP-36 yang terdiri dari berbagai merek yang dipasarkan di kios resmi, seluruhnya (9 contoh pupuk) berkualitas sangat rendah, dengan kandungan P2O5 berkisar dari 0.21 sampai 1.04% P2O5. Hanya empat (44%) dari sembilan contoh pupuk K yang berkualitas baik dengan kandungan kalium lebih dari 60% K2O, sedangkan yang lima contoh pupuk kalium lainnya (56%) berkualitas sangat buruk dengan kandungan kalium antara 0.02 sampai 0.08% K2O
Analisis Pola Kalimat pada Caption Resmi Kementerian Kesehatan dan Pertanian
No full textPenelitian ini mencoba untuk mengangkat pola-pola kalimat pada caption resmi kementerian Kesehatan dan Pertanian. Penelitian bertujuan untuk mengetahui karakteristik pola-pola kalimat yang disusun sebagai caption Resmi Kementerian Kesehatan dan Pertanian. Pola kalimat ialah pola-pola kata dalam menyusun suatu kalimat. Pola kalimat memiliki 8 jenis pola, yaitu S-P, S-P-O, S-P-O-Pel, S-P-Pel, S-P-O-K, S-P-K, S-P-Pel-K, dan S-P-O-Pel-K. Metode yang digunakan penelitian ini ialah deskriptif kualitatif. Sumber dalam penelitian ini ialah caption dari akun Instagram resmi Kementerian Kesehatan dan Pertanian. Teknik analisis dilakukan melalui pendekatan Teori Struktur Kalimat (Syntax Theory) Noam Chomsky. Penelitian ini berhasil mengungkap perbedaan pola kalimat yang signifikan antara caption resmi yang diterbitkan oleh Kementerian Kesehatan dan Kementerian Pertanian. Kementerian Kesehatan cenderung menggunakan kalimat yang lebih formal dan informatif, yang bertujuan untuk memberikan pemahaman yang jelas dan faktual kepada masyarakat. Sisi lain menunjukkan Kementerian Pertanian lebih sering menggunakan kalimat yang persuasif dengan pendekatan emosional, yang bertujuan untuk membangun kedekatan emosional dan meningkatkan partisipasi masyarakat dalam program-program yang dilaksanakan. Perbedaan ini mencerminkan strategi komunikasi yang berbeda antara kedua kementerian, disesuaikan dengan karakteristik audiens dan tujuan komunikasi masing-masing. Temuan ini menegaskan pentingnya pemilihan pola kalimat yang tepat dalam caption media sosial untuk mencapai efektivitas komunikasi yang diinginkan oleh lembaga pemerintah.Pola kalimat ialah pola-pola kata dalam menyusun suatu kalimat. Pola kalimat memiliki 8 jenis pola, yaitu S-P, S-P-O, S-P-O-Pel, S-P-Pel, S-P-O-K, S-P-K, S-P-Pel-K, dan S-P-O-Pel-K. Ilmu sintaksis sangatlah penting dalam suatu kehidupan, karena dengan ilmu ini seseorang mampu menulis suatu kalimat dengan lebih baik. Sintaksis ialah ilmu yang memperlajari mengenai kalimat, bagaimana kalimat itu tersusun, fungsi apa saja yang terdapat dari setiap kata yang tersusun dalam suatu kalimat, berapa banyak klausa yang terdapat dalam kalimat tersebut, mempelajari frasa dalam kalimat, mempelajari berbagai macam jenis dari kalimat majemuk, dan yang paling utama ialah mempelajari mengenai kategori pada kata. Tujuan penelitian ini untuk memperdalam pola-pola dalam suatu kalimat, terlebih dalam caption pada akun kementerian. Metode yang dipakai dalam penelitian ini ialah deskriptif kualitatif. Sumber dalam penelitian ini ialah caption dari akun Instagram resmi kementerian kesehatan dan pertanian. Diketahui bahwa akun sosial media kementerian selalu memberikan informasi untuk para masyarakat mengenai bidangnya masing-masing, dengan ini dapat dilihat ada berapa banyak kalimat yang sesuai dengan pola kalimat yang ada
Fig. 6. Sonerila travancorica Bedd. A–D. Inflorescences showing flowers with emarginated and mucronate petals. E–F. Flowers. G. Lamina with dense long white hairs. H in Sonerila longipedunculata sp. nov., a new species of Melastomataceae from the southern Western Ghats, India, with additional notes and lectotypification of Sonerila travancorica
No full textFig. 6. Sonerila travancorica Bedd. A–D. Inflorescences showing flowers with emarginated and mucronate petals. E–F. Flowers. G. Lamina with dense long white hairs. H. Petals, adaxial and abaxial views. I. Hypanthium. J. Hypanthium with stamens and pistil. K. Stamens. L. Pistil M. Immature capsules. N. Mature capsule. Photographs: A, C, E by Prashob P.; B, D, F–N by Resmi S.Published as part of Resmi, Sekarathil & Nampy, Santhosh, 2021, Sonerila longipedunculata sp. nov., a new species of Melastomataceae from the southern Western Ghats, India, with additional notes and lectotypification of Sonerila travancorica, pp. 160-174 in European Journal of Taxonomy 733 on page 170, DOI: 10.5852/ejt.2021.733.1231, http://zenodo.org/record/456227
Latest results on decays at Belle
No full textThe CKM angle phi3 is the least well known of the angles of the unitarity triangle and the only one that is accessible with tree-level decays in a theoretically clean way. The key method to measure phi3 is through the interference between and decays which occurs if the final state of the charm-meson decay is accessible to both the and mesons. To achieve the best sensitivity, a large variety of D and B decay modes is required, which is possible at Belle experiment as almost any final state can be reconstructed including those with photons. This presentation discusses the results from Belle as well as the ongoing studies. It also explains the details of the planned measurement at Belle II, a substantial upgrade of the Belle detector and will operate at the SuperKEKB energy-asymmetric collider.Presented at CKM 2018, On behalf of Belle Collaboratio
Measurement of the time-integrated asymmetry in decays
No full textThe time-integrated asymmetry in the Cabibbo-suppressed decay is measured using proton-proton collision data, corresponding to an integrated luminosity of 5.7 fb collected at a center-of-mass energy of 13 TeV with the LHCb detector. The mesons are required to originate from promptly produced decays and the charge of the companion pion is used to determine the flavor of the charm meson at production. The time-integrated asymmetry is measured to be \begin{align*} \mathcal{A}_{C\!P}(K^-K^+) = \left[6.8 \pm 5.4 \text{ (stat)} \pm 1.6 \text{ (syst)} \right]\times 10^{-4}. \end{align*} The direct asymmetries in and decays, and , are derived by combining with the time-integrated asymmetry difference, , giving \begin{alignat*}{2} a_{K^-K^+}^{d} &= (\phantom{2}7.7 \pm 5.7) \times 10^{-4}, \end{alignat*} \begin{alignat*}{2} a_{\pi^-\pi^+}^{d} &= (23.2 \pm 6.1) \times 10^{-4}, \end{alignat*} with a correlation coefficient corresponding to . The compatibility of these results with symmetry is 1.4 and 3.8 standard deviations for and decays, respectively. This is the first evidence for direct violation in a specific decay.The time-integrated CP asymmetry in the Cabibbo-suppressed decay D0→K-K+ is measured using proton-proton collision data, corresponding to an integrated luminosity of 5.7 fb-1 collected at a center-of-mass energy of 13 TeV with the LHCb detector. The D0 mesons are required to originate from promptly produced D*+→D0π+ decays, and the charge of the companion pion is used to determine the flavor of the charm meson at production. The time-integrated CP asymmetry is measured to be ACP(K-K+)=[6.8±5.4±1.6]×10-4 where the first uncertainty is statistical and the second systematic. The direct CP asymmetries in D0→K-K+ and D0→π-π+ decays, aK-K+d and aπ-π+d, are derived by combining ACP(K-K+) with the time-integrated CP asymmetry difference, ΔACP=ACP(K-K+)-ACP(π-π+), and other inputs, giving aK-K+d=(7.7±5.7)×10-4,aπ-π+d=(23.2±6.1)×10-4,with a correlation coefficient corresponding to ρ=0.88. The compatibility of these results with CP symmetry is 1.4 and 3.8 standard deviations for D0→K-K+ and D0→π-π+ decays, respectively. This is the first evidence for direct CP violation in a specific D0 decay.The time-integrated asymmetry in the Cabibbo-suppressed decay is measured using proton-proton collision data, corresponding to an integrated luminosity of 5.7 fb collected at a center-of-mass energy of 13 TeV with the LHCb detector. The mesons are required to originate from promptly produced decays and the charge of the companion pion is used to determine the flavor of the charm meson at production. The time-integrated asymmetry is measured to be \begin{align*} \mathcal{A}_{C\!P}(K^-K^+) = \left[6.8 \pm 5.4 \text{ (stat)} \pm 1.6 \text{ (syst)} \right]\times 10^{-4}. \end{align*} The direct asymmetries in and decays, and , are derived by combining with the time-integrated asymmetry difference, , giving \begin{alignat*}{2} a_{K^-K^+}^{d} &= (\phantom{2}7.7 \pm 5.7) \times 10^{-4}, \end{alignat*}\begin{alignat*}{2} a_{\pi^-\pi^+}^{d} &= (23.2 \pm 6.1) \times 10^{-4}, \end{alignat*} with a correlation coefficient corresponding to . The compatibility of these results with symmetry is 1.4 and 3.8 standard deviations for and decays, respectively. This is the first evidence for direct violation in a specific decay
A study of C P violation in the decays {{B} ^\pm } \rightarrow [{{K} ^+} {{K} ^-} {{\uppi } ^+} {{\uppi } ^-} ]_{D} h^{\pm } B ± → [ K + K - π + π - ] D h ± ( h = K , π ) and {{B} ^\pm } \rightarrow [{{\uppi } ^+} {{\uppi } ^-} {{\uppi } ^+} {{\uppi } ^-} ]_{D} h^{\pm } B ± → [ π + π - π + π - ] D h ±
No full textAbstract The first study of C P violation in the decay mode {{B} ^\pm } \rightarrow [{{K} ^+} {{K} ^-} {{\uppi } ^+} {{\uppi } ^-} ]_{D} h^\pm B ± → [ K + K - π + π - ] D h ± , with h = K , π , is presented, exploiting a data sample of proton–proton collisions collected by the LHCb experiment that corresponds to an integrated luminosity of 9 \,fb - 1 . The analysis is performed in bins of phase space, which are optimised for sensitivity to local C P asymmetries. C P -violating observables that are sensitive to the angle γ of the Unitarity Triangle are determined. The analysis requires external information on charm-decay parameters, which are currently taken from an amplitude analysis of LHCb data, but can be updated in the future when direct measurements become available. Measurements are also performed of phase-space integrated observables for {{B} ^\pm } \rightarrow [{{K} ^+} {{K} ^-} {{\uppi } ^+} {{\uppi } ^-} ]_{D} h^\pm B ± → [ K + K - π + π - ] D h ± and {{B} ^\pm } \rightarrow [{{\uppi } ^+} {{\uppi } ^-} {{\uppi } ^+} {{\uppi } ^-} ]_{D} h^\pm B ± → [ π + π - π + π - ] D h ± decays
Quantum-correlated measurements of D → K S0 π + π − π 0 decays and consequences for the determination of the CKM angle γ
No full textAbstract We perform quantum-correlated measurements of the decay D → K S0 π + π − π 0 using a data sample corresponding to an integrated luminosity of 0.82 fb−1 collected at the ψ(3770) resonance by the CLEO-c detector. The value of the CP -even fraction F + is determined to be 0.238 ± 0.012 ± 0.012. The strong-phase differences are also measured in different regions of K S0 π + π − π 0 phase space by binning around the intermediate resonances present. The potential sensitivity of the results for determining the CKM angle γ from B ± → D(K S0 π + π − π 0)K ± decays is also discussed
Search for violation with kinematic asymmetries in the decay
No full textInternational audienceWe search for CP violation in the singly-Cabibbo-suppressed decay D0→K+K-π+π- using data corresponding to an integrated luminosity of 988 fb-1 collected by the Belle detector at the KEKB e+e- collider. We measure a set of five kinematically dependent CP asymmetries, of which four asymmetries are measured for the first time. The set of asymmetry measurements can be sensitive to CP violation via interference between the different partial-wave contributions to the decay and performed on other pseudoscalar decays. We find no evidence of CP violation
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