11,473 research outputs found

    Winning in the long run: a quantified approach to the drivers of sustainable financial value on real estate: Working Paper 2

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    This working paper describes the first empirical study measuring the impact of sustainability characteristics on the financial performance of European office and retail properties. The authors present the project, the issue and the approach of their ongoing search for a �Green Alpha�. In a joint effort, university experts at Danube University Krems are in cooperation with Kingston University London tackling a robust analysis on hard data from real properties of institutional investment portfolios in the United Kingdom, France, the Netherlands, Germany, Switzerland and Austria. Their first results are expected by the end of 2010

    Measurement of CP asymmetry in Bs0DsK±B^0_s \rightarrow D^{\mp}_s K^{\pm} decays

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    We report on measurements of the time-dependent CP violating observables in Bs0DsK±B^0_s\rightarrow D^{\mp}_s K^{\pm} decays using a dataset corresponding to 1.0 fb1^{-1} of pp collisions recorded with the LHCb detector. We find the CP violating observables Cf=0.53±0.25±0.04C_f=0.53\pm0.25\pm0.04, AfΔΓ=0.37±0.42±0.20A^{\Delta\Gamma}_f=0.37\pm0.42\pm0.20, AfˉΔΓ=0.20±0.41±0.20A^{\Delta\Gamma}_{\bar{f}}=0.20\pm0.41\pm0.20, Sf=1.09±0.33±0.08S_f=-1.09\pm0.33\pm0.08, Sfˉ=0.36±0.34±0.08S_{\bar{f}}=-0.36\pm0.34\pm0.08, where the uncertainties are statistical and systematic, respectively. Using these observables together with a recent measurement of the Bs0B^0_s mixing phase 2βs-2\beta_s leads to the first extraction of the CKM angle γ\gamma from Bs0DsK±B^0_s \rightarrow D^{\mp}_s K^{\pm} decays, finding γ\gamma = (11543+28_{-43}^{+28})^\circ modulo 180^\circ at 68% CL, where the error contains both statistical and systematic uncertainties

    Measurement of CPCP violation parameters in B0DK0{B}^{0}\rightarrow{}D{K}^{*0} decays

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    An analysis of B0DK0{B}^{0}\rightarrow{}D{K}^{*0} decays is presented, where DD represents an admixture of D0{D}^{0} and D0{\overline{D}}^{0} mesons reconstructed in four separate final states: Kπ+{K}^{-{}}{\pi{}}^{+}, πK+{\pi{}}^{-{}}{K}^{+}, K+K{K}^{+}{K}^{-{}} and π+π{\pi{}}^{+}{\pi{}}^{-{}}. The data sample corresponds to 3.0  fb13.0\text{ }\text{ }{\mathrm{fb}}^{-{}1} of proton-proton collision, collected by the LHCb experiment. Measurements of several observables are performed, including CPCP asymmetries. The most precise determination is presented of rB(DK0){r}_{B}(D{K}^{*0}), the magnitude of the ratio of the amplitudes of the decay B0DK+π{B}^{0}\rightarrow{}D{K}^{+}{\pi{}}^{-{}} with a bub\rightarrow{}u or a bcb\rightarrow{}c transition, in a KπK\pi{} mass region of ±50 MeV/c2\pm50 \text{ }\mathrm{MeV}/{c}^{2} around the K(892){K}^{*}(892) mass and for an absolute value of the cosine of the K0{K}^{*0} helicity angle larger than 0.4

    First observation of the decay B+c→J/ψK+

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    The decay B+c→J/ψK+ is observed for the first time using a data sample, corresponding to an integrated luminosity of 1.0 fb−1, collected by the LHCb experiment in pp collisions at a centre-of-mass energy of 7 TeV. A yield of 46 ± 12 events is reported, with a significance of 5.0 standard deviations. The ratio of the branching fraction of B+c→J/ψK+ to that of B+c→J/ψπ+ is measured to be 0.069 ± 0.019 ± 0.005, where the first uncertainty is statistical and the second is systematic

    Study of B0(s)→K0Sh+h′− decays with first observation of B0s→K0SK±π∓ and B0s→K0Sπ+π−

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    A search for charmless three-body decays of B 0 and B0s mesons with a K0S meson in the final state is performed using the pp collision data, corresponding to an integrated luminosity of 1.0 fb−1, collected at a centre-of-mass energy of 7 TeV recorded by the LHCb experiment. Branching fractions of the B0(s)→K0Sh+h′− decay modes (h (′) = π, K), relative to the well measured B0→K0Sπ+π− decay, are obtained. First observation of the decay modes B0s→K0SK±π∓ and B0s→K0Sπ+π− and confirmation of the decay B0→K0SK±π∓ are reported. The following relative branching fraction measurements or limits are obtained B(B0→K0SK±π∓)B(B0→K0Sπ+π−)=0.128±0.017(stat.)±0.009(syst.), B(B0→K0SK+K−)B(B0→K0Sπ+π−)=0.385±0.031(stat.)±0.023(syst.), B(B0s→K0Sπ+π−)B(B0→K0Sπ+π−)=0.29±0.06(stat.)±0.03(syst.)±0.02(fs/fd), B(B0s→K0SK±π∓)B(B0→K0Sπ+π−)=1.48±0.12(stat.)±0.08(syst.)±0.12(fs/fd)B(B0s→K0SK+K−)B(B0→K0Sπ+π−)∈[0.004;0.068]at90%CL

    Evidence for exotic hadron contributions to Λb0J/ψpπ\Lambda_b^0 \to J/\psi p \pi^- decays

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    A full amplitude analysis of Λb0J/ψpπ\Lambda_b^0 \to J/\psi p \pi^- decays is performed with a data sample acquired with the LHCb detector from 7 and 8 TeV pppp collisions, corresponding to an integrated luminosity of 3 fb1^{-1}. A significantly better description of the data is achieved when, in addition to the previously observed nucleon excitations NpπN\to p\pi^-, either the Pc(4380)+P_c(4380)^+ and Pc(4450)+J/ψpP_c(4450)^+\to J/\psi p states, previously observed in Λb0J/ψpK\Lambda_b^0 \to J/\psi p K^- decays, or the Zc(4200)J/ψπZ_c(4200)^-\to J/\psi \pi^- state, previously reported in B0J/ψK+πB^0 \to J/\psi K^+ \pi^- decays, or all three, are included in the amplitude models. The data support a model containing all three exotic states, with a significance of more than three standard deviations. Within uncertainties, the data are consistent with the Pc(4380)+P_c(4380)^+ and Pc(4450)+P_c(4450)^+ production rates expected from their previous observation taking account of Cabibbo suppression

    Search for CP violation in the decay D+→π−π+π+

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    A search for CP violation in the phase space of the decay D+→π−π+π+D+→π−π+π+ is reported using pp collision data, corresponding to an integrated luminosity of 1.0 fb−1, collected by the LHCb experiment at a centre-of-mass energy of 7 TeV. The Dalitz plot distributions for 3.1×1063.1×106D+D+ and D−D− candidates are compared with binned and unbinned model-independent techniques. No evidence for CP violation is found

    Measurement of the forward energy flow in pp collisions at s√=7 TeV

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    The energy flow created in pp collisions at TeX is studied within the pseudorapidity range 1.9<η<4.9 with data collected by the LHCb experiment. The measurements are performed for inclusive minimum-bias interactions, hard scattering processes and events with an enhanced or suppressed diffractive contribution. The results are compared to predictions given by Pythia-based and cosmic-ray event generators, which provide different models of soft hadronic interactions

    Differential branching fraction and angular analysis of the decay B0→K∗0μ+μ−

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    The angular distribution and differential branching fraction of the decay B 0→ K ∗0 μ + μ − are studied using a data sample, collected by the LHCb experiment in pp collisions at s√=7 TeV, corresponding to an integrated luminosity of 1.0 fb−1. Several angular observables are measured in bins of the dimuon invariant mass squared, q 2. A first measurement of the zero-crossing point of the forward-backward asymmetry of the dimuon system is also presented. The zero-crossing point is measured to be q20=4.9±0.9GeV2/c4 , where the uncertainty is the sum of statistical and systematic uncertainties. The results are consistent with the Standard Model predictions

    Studies of beauty baryon decays to D0phD^0 p h^- and Λc+h\Lambda_c^+ h^- final states

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    Decays of beauty baryons to the D0phD^0 p h^- and Λc+h\Lambda_c^+ h^- final states (where hh indicates a pion or a kaon) are studied using a data sample of pppp collisions, corresponding to an integrated luminosity of 1.0 fb1^{-1}, collected by the LHCb detector. The Cabibbo-suppressed decays Λb0D0pK\Lambda_b^0\to D^0 p K^- and Λb0Λc+K\Lambda_b^0\to \Lambda_c^+ K^- are observed and their branching fractions are measured with respect to the decays Λb0D0pπ\Lambda_b^0\to D^0 p \pi^- and Λb0Λc+π\Lambda_b^0\to \Lambda_c^+ \pi^-. In addition, the first observation is reported of the decay of the neutral beauty-strange baryon Ξb0\Xi_b^0 to the D0pKD^0 p K^- final state, and a measurement of the Ξb0\Xi_b^0 mass is performed. Evidence of the Ξb0Λc+K\Xi_b^0\to \Lambda_c^+ K^- decay is also reported
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