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K 0 ∗ ( 1430 ) twist-2 distribution amplitude and B s , D s → K 0 ∗ ( 1430 ) transition form factors
No full textAbstract Based on the scenario that the K 0 ∗ ( 1430 ) is viewed as the ground state of s q ¯ or q s ¯ , we study the K 0 ∗ ( 1430 ) leading-twist distribution amplitude (DA) ϕ 2 ; K 0 ∗ ( x , μ ) with the QCD sum rules in the framework of background field theory. A more reasonable sum rule formula for ξ -moments ⟨ ξ n ⟩ 2 ; K 0 ∗ is suggested, which eliminates the influence brought by the fact that the sum rule of ⟨ ξ p 0 ⟩ 3 ; K 0 ∗ cannot be normalized in whole Borel region. More accurate values of the first ten ξ -moments, ⟨ ξ n ⟩ 2 ; K 0 ∗ ( n = 1 , 2 , … , 10 ) , are evaluated. A new light-cone harmonic oscillator (LCHO) model for K 0 ∗ ( 1430 ) leading-twist DA is established for the first times. By fitting the resulted values of ⟨ ξ n ⟩ 2 ; K 0 ∗ ( n = 1 , 2 , … , 10 ) via the least squares method, the behavior of K 0 ∗ ( 1430 ) leading-twist DA described with LCHO model is determined. Further, by adopting the light-cone QCD sum rules, we calculate the B s , D s → K 0 ∗ ( 1430 ) transition form factors and branching fractions of the semileptonic decays B s , D s → K 0 ∗ ( 1430 ) ℓ ν ℓ . The corresponding numerical results can be used to extract the Cabibbo-Kobayashi-Maskawa matrix elements by combining the relative experimental data in the future
K0⁎(800) as a companion pole of K0⁎(1430)
No full textAbstractWe study the light scalar sector up to 1.8 GeV by using a quantum field theoretical approach which includes a single kaonic state in a Lagrangian with both derivative and non-derivative interactions. By performing a fit to πK phase shift data in the I=1/2, J=0 channel, we show that K0⁎(800) (or κ) emerges as a dynamically generated companion pole of K0⁎(1430). This is a result of investigating quantum fluctuations with one kaon and one pion circulating in the loops dressing K0⁎(1430). We determine the position of the poles on the complex plane in the context of our approach: for K0⁎(1430) we get (1.413±0.002)−i(0.127±0.003) (in GeV), while for κ we get (0.746±0.019)−i(0.262±0.014) (in GeV). The model-dependence of these results and related uncertainties are discussed in the paper. A large-Nc study confirms that K0⁎(1430) is predominantly a quarkonium and that K0⁎(800) is a molecular-like dynamically generated state
eup-18-1430-File002 - Supplemental material for The preference for Europe: Public opinion about European integration since 1952
No full textSupplemental material, eup-18-1430-File002 for The preference for Europe: Public opinion about European integration since 1952 by Christopher J Anderson and Jason D Hecht in European Union Politics</p
Measurement of the B0→K2*(1430)0γ and B+→K2*(1430)+γ branching fractions
No full textWe have investigated the exclusive, radiative B meson decays to K2*(1430) in 89×106 BB̅ events with the BABAR detector at the PEP-II storage ring. We measure the branching fractions B(B0→K2*(1430)0γ)=(1.22±0.25±0.10)×10-5 and B(B+→K2*(1430)+γ)=(1.45±0.40±0.15)×10-5, where the first error is statistical and the second systematic. In addition, we measure the CP-violating asymmetry ACP[B0→K2*(1430)0γ]=-0.08±0.15±0.01
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Measurement of the B0→K2*(1430)0γ and B+→K2*(1430)+γ branching fractions
Full text linkWe have investigated the exclusive, radiative B meson decays to K 2*(1430) in 89 × 106 BB̄ events with the BABAR detector at the PEP-II storage ring. We measure the branching fractions B(B0 → K2*(1430)0γ) = (1.22 ± 0.25 ± 0.10) × 10-5 and B(B+ → K2*(1430)+γ) = (1.45 ± 0.40 ± 0.15) × 10-5, where the first error is statistical and the second systematic. In addition, we measure the CP-violating asymmetry A CP[B0 → K2*(1430) 0γ] = -0.08 ± 0.15 ± 0.01
La Passion d'Arles (1430)
No full textLebègue R. La Passion d'Arles (1430). In: Romania, tome 58 n°231, 1932. pp. 434-435
Measurement of the B-0 -> K-2(*)(1430)(0)gamma and B+-> K-2(*)(1430)(+)gamma branching fractions
No full textWe have investigated the exclusive, radiative B meson decays to K 2*(1430) in 89 × 106 BB̄ events with the BABAR detector at the PEP-II storage ring. We measure the branching fractions B(B0 → K2*(1430)0γ) = (1.22 ± 0.25 ± 0.10) × 10-5 and B(B+ → K2*(1430)+γ) = (1.45 ± 0.40 ± 0.15) × 10-5, where the first error is statistical and the second systematic. In addition, we measure the CP-violating asymmetry A CP[B0 → K2*(1430) 0γ] = -0.08 ± 0.15 ± 0.01
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Komentar o omjeru raspada τ → K*0 (1430) vτ
No full textThe decay rate for τ → K*0(1430) vτ is calculated in the standard electroweak theory. The K*0 (1430) is described through the excited qq state of the MIT bag model. The branching ratio B (τ → K*0 (1430) vτ) is found to be rather small (≅ 10-6) and not feasible to experimental determination.Omjer raspada τ → K*0 (1430) vτ proračunat je u standardnoj elektroslaboj teoriji. K*0 (1430) skalarni mezon opisan je kao pobuđeno stanje qq tipa uz upotrebu MIT bag modela. Omjer raspada B (τ → K*0 (1430) vτ) je veoma mali, te ga je eksperimentalno teško detektirati
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