8 research outputs found

    Probing chirality structure in lepton-flavour-violating Higgs decay hτμh\to\tau\mu at the LHC

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    A phenomenological study for determining the chirality structure in lepton-flavour-violating Higgs (hLFV) decays hτμh \to \tau\mu at the LHC is presented. We estimate the effects of the τ\tau polarization in the analysis andthe importance of determining the relative visible momentum ratio xx, and show the analysis with a collinear mass mcol1m_{col1} by assuming one missing particle is appropriate. We find that the sensitivity would be generically affected up to ±\pm 4-6 % in terms of the BR(hτμ)(h\to \tau\mu) upper bound, and show the altered bounds on the (yμτ,yτμ)(|y_{\mu\tau}|, |y_{\tau\mu}|) plane. We further study the benchmark scenarios, and demonstrate the sensitivity study for the chirality structure using the relative visible momentum ratio. We find that the two fully polarized cases, the τR\tau_R and τL\tau_L scenarios consistent with the recently reported excess, are distinguishable at 2σ\sigma level for 1000 fb1^{-1}. We also show that a further improved study potentially provides a similar sensitivity already for 139 fb1^{-1}.Comment: 27 pages, 8 figures and 5 table

    Digistar 6-Based Planetarium as an Educational Media for Learning about the Sun Position Using a Horizontal Coordinate System

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    A good understanding of the labeling of the positions of celestial bodies, including the Sun, in a horizontal coordinate system, is absolutely necessary as a basis for understanding astronomy and astrophysics. The existence of media that can be used to provide simulations of the celestial sphere and its coordinate system is very important to support the learning process. Through this quantitative descriptive statistical research with One-Group Pretest-Posttest Design, it can be shown that the use of Digistar 6-Based Planetarium as an educational medium can improve students' understanding of the position of the Sun in a horizontal coordinate system. The increase in understanding was marked by an increase in the average percentage of correct answers from pretest to posttest by 32.89%, an increase in the percentage of minimum and maximum correct answers by 54% and 60%, respectively, and an increase in the number of passes in the PAP version by 53.34%

    Digistar 6-Based Planetarium as an Educational Media for Learning about the Sun Position Using a Horizontal Coordinate System

    Get PDF
    A good understanding of the labeling of the positions of celestial bodies, including the Sun, in a horizontal coordinate system, is absolutely necessary as a basis for understanding astronomy and astrophysics. The existence of media that can be used to provide simulations of the celestial sphere and its coordinate system is very important to support the learning process. Through this quantitative descriptive statistical research with One-Group Pretest-Posttest Design, it can be shown that the use of Digistar 6-Based Planetarium as an educational medium can improve students' understanding of the position of the Sun in a horizontal coordinate system. The increase in understanding was marked by an increase in the average percentage of correct answers from pretest to posttest by 32.89%, an increase in the percentage of minimum and maximum correct answers by 54% and 60%, respectively, and an increase in the number of passes in the PAP version by 53.34%

    FONDASI MATEMATIS TEORI TERA: KAJIAN TENTANG UNTINGAN SERAT, KONEKSI DAN KELENGKUNGAN

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    The mathematical foundations of gauge theory has been studied. The aspects that has been explained is fiber bundle, connection, and curvature. The fiber bundle formalism used generalization of manifold that has been endowed with calculus structure on it. The principal fiber bundle as one of the fiber bundle is the representation of gauge theory. In principal fiber bundle, connection is built as distribution of horizontal tangent vector. After that, connection is interpreted as Lie algebra-valued 1-form on principal fiber bundle to get the local picture of connection in base manifold. Later on, the concept of horizontal curve on principal fiber bundle is built to define parallel transport. By using parallel transport, it can be defined the covariant derivative of principal fiber bundle�s section. The covariant derivative then generalized to exterior covariant derivative in principal fiber bundle and use to defined curvature as the Lie algebra-valued 2-form
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