12 research outputs found

    Perceptual balance, stability, and aesthetic appreciation

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    This repository contains the full datasets and calculated objective measures related to the article "Perceptual balance, stability, and aesthetic appreciation: Their relations depend on the picture type" (Huebner & Fillinger, 2019)

    On the relation between perceived stability and aesthetic appreciation

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    This repository contains the full datasets with calculated objective measures and the stimulus material related to the article "On the relation between perceived stability and aesthetic appreciation"

    Evidence of the P_ccbars(4459)0 in Upsilon(1S, 2S) inclusive decays at Belle

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    International audienceUsing data samples of 102 million Upsilon(1S) events and 158 million Upsilon(2S) events collected by the Belle detector at the KEKB asymmetric-energy e+ee^+e^- collider, we search for [udsccbar] pentaquark states decaying to Jpsi Lambda. Using the first observations of Upsilon(1S, 2S) inclusive decays to Jpsi Lambda, we find evidence of the P_ccbars(4459)0 state with a significance of 3.3 standard deviations, including statistical and systematic uncertainties. We measure the mass and width of the Pccbars(4459)0 to be (4471.7 +- 4.8 +- 0.6) MeV/c2 and (21.9 +- 13.1 +- 2.7) MeV, respectively. The branching fractions for P_ccbars(4459)0 production are measured to be B[Upsilon(1S) -> P_ccbars(4459)0/ Pbar_ccbars(4459)0 + anything] = (3.5 +- 2.0 +- 0.2)*10-6 and B[Upsilin(2S) -> P_ccbars(4459)0/ Pbar_ccbars(4459)0 +anything] = (2.9 +- 1.7 +- 0.4)*10-6. The inclusive branching fractions of Upsilon(1S, 2S) -> Jpsi Lambda/Lambdabar are measured to be B[Upsilin(1S) -> Jpsi Lambda/Lambdabar + anything] = (36.9 +- 5.3 +- 2.4)*10-6 and B[Upsilon(2S) -> Jpsi Lambda/Lambdabar + anything] = (22.3 +- 5.7 +- 3.1)*10-6. We measure the visible cross section σ(e+eJ/psiΛ/Λˉ\sigma(e^+e^- \to J/psi \Lambda/\bar\Lambda + anything) = (90 +- 14 +- 6) fb for the continuum production at s=10.52\sqrt{s} = 10.52 GeV. In all cases, the first uncertainties are statistical and the second are systematic

    Evidence of the Pccˉs_{c\bar{c}s}(4459)0^0 in Upsilon(1S, 2S) inclusive decays at Belle

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    Using data samples of 102 million Upsilon(1S) events and 158 million Upsilon(2S) events collected by the Belle detector at the KEKB asymmetric-energy e+ee^+e^- collider, we search for [udsccbar] pentaquark states decaying to Jpsi Lambda. Using the first observations of Upsilon(1S, 2S) inclusive decays to Jpsi Lambda, we find evidence of the Pccsˉ(4459)0P_{cc\bar{s}}(4459)^0 state with a significance of 3.3 standard deviations, including statistical and systematic uncertainties. We measure the mass and width of the Pccsˉ(4459)0P_{cc\bar{s}}(4459)^0 to be (4471.7 +- 4.8 +- 0.6) MeV/c2 and (21.9 +- 13.1 +- 2.7) MeV, respectively. The branching fractions for Pccsˉ(4459)0P_{cc\bar{s}}(4459)^0 production are measured to be B[Upsilon(1S) -> Pccsˉ(4459)0P_{cc\bar{s}}(4459)^0/ Pbar_ccbars(4459)0 + anything] = (3.5 +- 2.0 +- 0.2)*106^{-6} and B[Upsilin(2S) -> Pccsˉ(4459)0P_{cc\bar{s}}(4459)^0/ Pbar_ccbars(4459)0 +anything] = (2.9 +- 1.7 +- 0.4)*106^{-6}. The inclusive branching fractions of Upsilon(1S, 2S) -> Jpsi Lambda/Lambdabar are measured to be B[Upsilin(1S) -> Jpsi Lambda/Lambdabar + anything] = (36.9 +- 5.3 +- 2.4)*10-6 and B[Upsilon(2S) -> Jpsi Lambda/Lambdabar + anything] = (22.3 +- 5.7 +- 3.1)*10-6. We measure the visible cross section σ(e+eJ/psiΛ/Λˉ\sigma(e^+e^- \to J/psi \Lambda/\bar\Lambda + anything) = (90 +- 14 +- 6) fb for the continuum production at s=10.52\sqrt{s} = 10.52 GeV. In all cases, the first uncertainties are statistical and the second are systematic

    Measurement of the branching fraction and CP\it CP-violating asymmetry of the decay B0π0π0B^{0} \rightarrow \pi^{0} \pi^{0} using 387387 million bottom-antibottom meson pairs in Belle II data

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    We measure the branching fraction and CP\it CP-violating flavor-dependent rate asymmetry of B0π0π0B^{0} \to \pi^{0} \pi^{0} decays reconstructed using the Belle II detector in an electron-positron collision sample containing 387×106387 \times 10^{6}BBB\overline{B} pairs. Using an optimized event selection, we find 126±20126\pm 20 signal decays in a fit to background-discriminating and flavor-sensitive distributions. The resulting branching fraction is (1.25±0.23)×106(1.25 \pm 0.23)\times 10^{-6} and the CP\it CP-violating asymmetry is 0.03±0.300.03 \pm 0.30

    Measurement of the branching fractions of B \overline{B} → D()^{(*)}KK(S)()0^{−} {K}_{(S)}^{\left(\ast \right)0} and B \overline{B} → D()Ds^{(*)} {D}_s^{-} decays at Belle II

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    We present measurements of the branching fractions of eight B0 {\overline{B}}^0 → D()+^{(*)+}KK(S)()0^{−} {K}_{(S)}^{\left(\ast \right)0} , B^{−} → D()0^{(*)0}KK(S)()0^{−} {K}_{(S)}^{\left(\ast \right)0} decay channels. The results are based on data from SuperKEKB electron-positron collisions at the Υ(4S) resonance collected with the Belle II detector, corresponding to an integrated luminosity of 362 fb1^{−1}. The event yields are extracted from fits to the distributions of the difference between expected and observed B meson energy, and are efficiency-corrected as a function of m(KK(S)()0^{−} {K}_{(S)}^{\left(\ast \right)0} ) and m(D()K(S)()0^{(*)} {K}_{(S)}^{\left(\ast \right)0} ) in order to avoid dependence on the decay model. These results include the first observation of B0 {\overline{B}}^0 → D+^{+}KKS0^{−} {K}_S^0 , B^{−} → D*0^{0}KKS0^{−} {K}_S^0 , and B0 {\overline{B}}^0 → D*+^{+}KKS0^{−} {K}_S^0 decays and a significant improvement in the precision of the other channels compared to previous measurements. The helicity-angle distributions and the invariant mass distributions of the KK(S)()0^{−} {K}_{(S)}^{\left(\ast \right)0} systems are compatible with quasi-two-body decays via a resonant transition with spin-parity JP^{P} = 1^{−} for the KKS0^{−} {K}_S^0 systems and JP^{P} = 1+^{+} for the K^{−}K*0^{0} systems. We also present measurements of the branching fractions of four B0 {\overline{B}}^0 → D()+Ds^{(*)+} {D}_s^{-} , B^{−} → D()0Ds^{(*)0} {D}_s^{-} decay channels with a precision compatible to the current world averages.[graphic not available: see fulltext

    Measurement of the branching fractions of BˉD()KK(S)()0\bar{B}\to D^{(*)} K^- K^{(*)0}_{(S)} and BˉD()Ds\bar{B}\to D^{(*)}D_s^{-} decays at Belle II

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    International audienceWe present measurements of the branching fractions of eight B0D()+KK(S)()0\overline B{}^0\to D^{(*)+} K^- K^{(*)0}_{(S)}, BD()0KK(S)()0B^{-}\to D^{(*)0} K^- K^{(*)0}_{(S)} decay channels. The results are based on data from SuperKEKB electron-positron collisions at the Υ(4S)\Upsilon(4S) resonance collected with the Belle II detector, corresponding to an integrated luminosity of 362 fb1362~\text{fb}^{-1}. The event yields are extracted from fits to the distributions of the difference between expected and observed BB meson energy, and are efficiency-corrected as a function of m(KK(S)()0)m(K^-K^{(*)0}_{(S)}) and m(D()K(S)()0)m(D^{(*)}K^{(*)0}_{(S)}) in order to avoid dependence on the decay model. These results include the first observation of B0D+KKS0\overline B{}^0\to D^+K^-K_S^0, BD0KKS0B^-\to D^{*0}K^-K_S^0, and B0D+KKS0\overline B{}^0\to D^{*+}K^-K_S^0 decays and a significant improvement in the precision of the other channels compared to previous measurements. The helicity-angle distributions and the invariant mass distributions of the KK(S)()0K^- K^{(*)0}_{(S)} systems are compatible with quasi-two-body decays via a resonant transition with spin-parity JP=1J^P=1^- for the KKS0K^-K_S^0 systems and JP=1+J^P= 1^+ for the KK0K^-K^{*0} systems. We also present measurements of the branching fractions of four B0D()+Ds\overline B{}^0\to D^{(*)+} D_s^-, BD()0DsB^{-}\to D^{(*)0} D_s^- decay channels with a precision compatible to the current world averages

    Measurement of the branching fraction and CP\it CP-violating asymmetry of the decay B0π0π0B^{0} \rightarrow \pi^{0} \pi^{0} using 387387 million bottom-antibottom meson pairs in Belle II data

    No full text
    We measure the branching fraction and CP\it CP-violating flavor-dependent rate asymmetry of B0π0π0B^{0} \to \pi^{0} \pi^{0} decays reconstructed using the Belle II detector in an electron-positron collision sample containing 387×106387 \times 10^{6}BBB\overline{B} pairs. Using an optimized event selection, we find 126±20126\pm 20 signal decays in a fit to background-discriminating and flavor-sensitive distributions. The resulting branching fraction is (1.25±0.23)×106(1.25 \pm 0.23)\times 10^{-6} and the CP\it CP-violating asymmetry is 0.03±0.300.03 \pm 0.30
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