1,334 research outputs found

    Measurement of angular parameters from the decay B0 -> K*0 \mu + \mu - in proton-proton collisions at \sqrt{} s = 8 TeV

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    Angular distributions of the decay B0 → K∗0 ÎŒ+ Ό− are studied using a sample of proton-proton collisions at sqrt(s) = 8 TeV collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 20.5 fb^−1. An angular analysis is performed to determine the P 1 and P'5 parameters, where the P'5 parameter is of particular interest because of recent measurements that indicate a potential discrepancy with the standard model predictions. Based on a sample of 1397 signal events, the P1 and P'5 parameters are determined as a function of the dimuon invariant mass squared. The measurements are in agreement with predictions based on the standard model

    Optimasi Portofolio Resiko Menggunakan Model Markowitz MVO Dikaitkan dengan Keterbatasan Manusia dalam Memprediksi Masa Depan dalam Perspektif Al-Qur`an

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    Risk portfolio on modern finance has become increasingly technical, requiring the use of sophisticated mathematical tools in both research and practice. Since companies cannot insure themselves completely against risk, as human incompetence in predicting the future precisely that written in Al-Quran surah Luqman verse 34, they have to manage it to yield an optimal portfolio. The objective here is to minimize the variance among all portfolios, or alternatively, to maximize expected return among all portfolios that has at least a certain expected return. Furthermore, this study focuses on optimizing risk portfolio so called Markowitz MVO (Mean-Variance Optimization). Some theoretical frameworks for analysis are arithmetic mean, geometric mean, variance, covariance, linear programming, and quadratic programming. Moreover, finding a minimum variance portfolio produces a convex quadratic programming, that is minimizing the objective function ðð„with constraintsð ð ð„ „ ðandðŽð„ = ð. The outcome of this research is the solution of optimal risk portofolio in some investments that could be finished smoothly using MATLAB R2007b software together with its graphic analysis

    Search for heavy resonances decaying to two Higgs bosons in final states containing four b quarks