Extending Soft-Collinear-Effective-Theory to describe hard jets in dense QCD media

An extension to the Soft-Collinear-Effective Theory (SCET) description of hard jets is motivated to include the leading contributions between the propagating partons within the jet with partons radiated from a dense extended medium. The resulting effective Lagrangian, containing both a leading and a power suppressed (in the hard scale $Q^2$) contribution, arises primarily from interactions between the hard collinear modes in the jet with Glauber modes from the medium. In this first attempt, the interactions between the hard jet and soft and collinear partonic modes have been ignored, in an effort to focus solely on the interactions with the Glauber modes. While the effect of such modes on vacuum cross sections are suppressed by powers of the hard scale compared to the terms from the SCET Lagrangian, such sub-leading contributions are enhanced by the extent of the medium and result in measurable corrections. The veracity of the derived Lagrangian is checked by direct comparison with known results from full QCD calculations of two physical observables: the transverse momentum broadening of hard jets in dense media and a reanalysis of the transverse momentum dependent parton distribution function (TMDPDF).Comment: 19 pages, 6 figures, revtex4, discussion on power counting updated, references adde

Increasing Students? Grammar Masteryusing Think Pair Share Strategy and Video

Tujuan dari pelelitian ini adalah untuk meningkatkan kemampuan tata bahasa atau grammar murid. Subjek dari penelitian ini adalah kelas dua belas Sekolah Menengah Kejuruan Negeri 1 Sayung tahun akademik 2014/2015. Penelitian ini adalah penelitian tindakan kelas. Peneliti menggunakan tiga siklus yang mana dalam setiap siklus terdapat empat tahap yaitu perencanaan (planning), tindakan(action), pengamatan (observing), dan refleksi/pemikiran (reflecting). Dalam tahap perencanaan (planning), peneliti menyiapkan rencana pembelajaran dan bahan untuk mengajar tata bahasa (grammar) dan juga media yang akan digunakandalam tahap tindakan (action). Di dalam tahap perencanaan (observing), peneliti mengidentifikasi dan mencatat reaksi atau tanggapan selama proses belajar dan pembelajaran, dan tahap releksi/pemikiran (reflecting) dilakukan untuk merefleksikan hasil dari tindakanyang diperoleh dari siklus-siklus tersebut. Sementara itu, observasi, kuesioner diberikan dua kali, sebelum dan sesudah penelitian. Para murid merasa bahwa strategi Think Pair Share menggunakan video sangat bagus, menyenangkan danmembantu mereka menguasai tata bahasa (grammar). Hasil dari penelitian ini menunjukkan bahwa di pre-test nilai rata-rata adalah 17.01. Nilai rata-rata di siklus 1 post-test adalah 55.10, dan untuk post-test 2, nilai rata-ratanya adalah 69,72. Untuk post-test 3, nilai rata-rata dalam pembelajaran pada umumnya positif, ditandai dengan persentase jawaban positif dalam rata-rata 88%. Jadi bisa disimpulkan bahwa strategi Think Pair Sharemenggunakan video dapat meningkatkan kemampuan tata bahasa para murid dan guru bisa menggunakan stategi dan media ini untuk meningkatkan kemampuan para murid dan membuat suasana positif dikelas

Demonstration of the Equivalence of Soft and Zero-Bin Subtractions

Calculations of collinear correlation functions in perturbative QCD and Soft-Collinear Effective Theory (SCET) require a prescription for subtracting soft or zero-bin contributions in order to avoid double counting the contributions from soft modes. At leading order in $\lambda$, where $\lambda$ is the SCET expansion parameter, the zero-bin subtractions have been argued to be equivalent to convolution with soft Wilson lines. We give a proof of the factorization of naive collinear Wilson lines that is crucial for the derivation of the equivalence. We then check the equivalence by computing the non-Abelian two-loop mixed collinear-soft contribution to the jet function in the quark form factor. These results provide strong support for the equivalence, which can be used to give a nonperturbative definition of the zero-bin subtraction at lowest order in $\lambda$.Comment: 14 pages, 3 figure

An Improved DC Recovery Method from AC Coefficients of DCT-Transformed Images

Motivated by the work of Uehara et al. [1], an improved method to recover DC coefficients from AC coefficients of DCT-transformed images is investigated in this work, which finds applications in cryptanalysis of selective multimedia encryption. The proposed under/over-flow rate minimization (FRM) method employs an optimization process to get a statistically more accurate estimation of unknown DC coefficients, thus achieving a better recovery performance. It was shown by experimental results based on 200 test images that the proposed DC recovery method significantly improves the quality of most recovered images in terms of the PSNR values and several state-of-the-art objective image quality assessment (IQA) metrics such as SSIM and MS-SSIM.Comment: 6 pages, 6 figures, ICIP 201

Market Power and Efficiency of Islamic Banking and Conventional Banking in Indonesia

ASEAN Economic Community (AEC) of banking industry requires both Islamic and conventional banking to improve their efficiency because the competition in banking market industry will be more intense. Therefore, this study aims to identify the type of hyphotesis of industrial organization which exists in Islamic and conventional banks in order to investigate their readiness for AEC. The research sampling consists of 10 Islamic banks and 10 conventional banks from January 2009 to December 2016. To measure x-efficiency and scale efficiency, this research uses Data Envelopment Analysis (DEA). Meanwhile, the concentration is measured by Lerner index. The hypothesis is tested by using panel regression. The result shows SCP (Structure-Conduct-Performance) hypothesis is closely applied to Islamic and conventional banks because market concentration significantly influences profitability. RMP (Relative Market Power) hypothesis is also closely applied to Islamic and conventional banking, this indicates Indonesian banking has market power in determining prices and this condition makes the profit higher. RES (Relative Efficiency Structure) and SES (Scale Efficiency Structure) hypothesis do not exist in both conventional and Islamic banks because x-efficiency and scale efficiency do not affect profitability, concentration, and market share simultaneously. Market power and efficiency researches are commonly conducted in conventional banking, however there are only a few research in Islamic banking area. The novelty of this study is the comparison between conventional and Islamic banking in the term of market structure and efficiency

Threshold Resummation for Higgs Production in Effective Field Theory

We present an effective field theory to resum the large double logarithms originated from soft-gluon radiations at small final-state hadron invariant masses in Higgs and vector boson (\gamma^*, $W$ and $Z$) production at hadron colliders. The approach is conceptually simple, indepaendent of details of an effective field theory formulation, and valid to all orders in sub-leading logarithms. As an example, we show the result of summing the next-to-next-to-next leading logarithms is identical to that of standard pQCD factorization method.Comment: A version to appear in Phys. Rev.

Collins-Soper Equation for the Energy Evolution of Transverse-Momentum and Spin Dependent Parton Distributions

The hadron-energy evolution (Collins and Soper) equation for all the leading-twist transverse-momentum and spin dependent parton distributions is derived in the impact parameter space. Based on the result, we present resummation formulas for the spin structure functions in the semi-inclusive deep inelastic scattering.Comment: 16 pages, 4 figures included, revised versio