Master Integrals for Massless Three-Loop Form Factors: One-Loop and Two-Loop Insertions

The three-loop form factors in massless QCD can be expressed as a linear combination of master integrals. Besides a number of master integrals which factorise into products of one-loop and two-loop integrals, one finds 16 genuine three-loop integrals. Of these, six have the form of a bubble insertion inside a one-loop or two-loop vertex integral. We compute all master integrals with these insertion topologies.Comment: 12 pages, 1 figur

Hubungan antara Kekuatan Otot Lengan, Kekuatan Otot Perut, dan Kekuatan Otot Tungkai TerhadapKecepatanBerenang 50 Meter Gaya Bebas

Tujuan penelitian ini untuk mengetahui seberapa besar hubungan antara kekuatan otot lengan, kekuatan otot Perut, dan kekuatan otot tungkai terhadap kecepatan renang 50 meter gaya bebas. Jenis penelitian ini adalah penelitian kuantitatif dengan pendekatan korelasional menggunakan analisis koefisien untuk menentukan ada tidaknya hubungan positif pada variabel kekuatan otot lengan, kekuatan otot Perut, kekuatan otot tungkai dan kecepatan renang 50 meter gaya bebas secara bersamaan. Penelitian ini menggunakan sampel atlet renang putri Indonesia Muda Gresik sebanyak 10 atlet sebagai sasaran penelitian, penelitian ini dilakukan di kolam renang mutiara yang berada di kabupaten gresik kota jalan RA. Kartini. Hasil penelitian ini adalah variabel pertama terdapat hubungan sebesar -0,647 dengan taraf hubungan substansial antara variabel kekuatan otot lengan dengan kecepatan renang 50 meter gaya bebas. Variabel yang ke dua terdapat hubungan sebesar -0,539 dengan taraf hubungan substansial antara variabel kekuatan otot Perut dengan kecepatan renang 50 meter gaya bebas. Variabel yang ke tiga terdapat hubungan sebesar -0,539 dengan taraf hubungan substansial antara variabel kekuatan otot tungkai dengan kecepatan renang 50 meter gaya bebas. Setelah itu dengan ketiga variabel bebas secara bersamaan berdapat hubungan positif sebesar 0,647 dengan taraf hubungan substansial antara variabel kekuatan otot lengan, kekuatan otot Perut dan kekuatan otot tungkai dengan kecepatan renang 50 meter gaya bebas secara bersamaan. Penelitian ini dapat berimplikasi yaitu: Sebagai bahan pertimbangan dalam latihan kekuatan otot tungkai dengan menggunakan alat Leg Dynamometer, latihan kekuatan otot Perut menggunakan Sit Up Test, latihan kekuatan otot lengan menggunakan pull up test dan latihan kecepatan renang 50M gaya bebas menggunakan tes renang 50M gaya bebas, supaya dapat meningkatkan kemampuan atlet renang putri Indonesia Muda Gresik hingga hasil yang maksimal. Kata kunci: Renang, Gaya Bebas, Kekuatan Dan Oto

BSAURUS- A Package For Inclusive B-Reconstruction in DELPHI

BSAURUS is a software package for the inclusive reconstruction of B-hadrons in Z-decay events taken by the DELPHI detector at LEP. The BSAURUS goal is to reconstruct B-decays, by making use of as many properties of b-jets as possible, with high efficiency and good purity. This is achieved by exploiting the capabilities of the DELPHI detector to their extreme, applying wherever possible physics knowledge about B production and decays and combining different information sources with modern tools- mainly artificial neural networks. This note provides a reference of how BSAURUS outputs are formed, how to access them within the DELPHI framework, and the physics performance one can expect.Comment: 52 pages, 24 figures, added author Z.

The Two-loop Anomalous Dimension Matrix for Soft Gluon Exchange

The resummation of soft gluon exchange for QCD hard scattering requires a matrix of anomalous dimensions. We compute this matrix directly for arbitrary 2 to n massless processes for the first time at two loops. Using color generator notation, we show that it is proportional to the one-loop matrix. This result reproduces all pole terms in dimensional regularization of the explicit calculations of massless 2 to 2 amplitudes in the literature, and it predicts all poles at next-to-next-to-leading order in any 2 to n process that has been computed at next-to-leading order. The proportionality of the one- and two-loop matrices makes possible the resummation in closed form of the next-to-next-to-leading logarithms and poles in dimensional regularization for the 2 to n processes.Comment: 5 pages, 1 figure, revte

Transmission electron microscopy and ferromagnetic resonance investigations of tunnel magnetic junctions using Co2MnGe Heusler alloy as magnetic electrodes

HRTEM, nano-beam electronic diffraction, energy dispersive X-rays scanning spectroscopy, Vibrating Sample Magnetometry (VSM) and FerroMagnetic Resonance (FMR) techniques are used in view of comparing (static and dynamic) magnetic and structural properties of Co2MnGe (13 nm)/Al2O3 (3 nm)/Co (13 nm) tunnel magnetic junctions (TMJ), deposited on various single crystalline substrates (a-plane sapphire, MgO(100) and Si(111)). They allow for providing a correlation between these magnetic properties and the fine structure investigated at atomic scale. The Al2O3 tunnel barrier is always amorphous and contains a large concentration of Co atoms, which, however, is significantly reduced when using a sapphire substrate. The Co layer is polycrystalline and shows larger grains for films grown on a sapphire substrate. The VSM investigation reveals in-plane anisotropy only for samples grown on a sapphire substrate. The FMR spectra of the TMJs are compared to the obtained ones with a single Co and Co2MnGe films of identical thickness deposited on a sapphire substrate. As expected, two distinct modes are detected in the TMJs while only one mode is observed in each single film. For the TMJ grown on a sapphire substrate the FMR behavior does not significantly differ from the superposition of the individual spectra of the single films, allowing for concluding that the exchange coupling between the two magnetic layers is too small to give rise to observable shifts. For TMJs grown on a Si or on a MgO substrate the resonance spectra reveal one mode which is nearly identical to the obtained one in the single Co film, while the other observed resonance shows a considerably smaller intensity and cannot be described using the magnetic parameters appropriate to the single Co2MnGe film.Comment: 11 pages, 10 figures, Thin Solid Film

Analisis Strukturalisme Tokoh Utama Novel Laila Majnun Karya Nizami Ganjavi

This research applied by the researcher was to find the Thinking, feeling and soul of conditionof Laila as the first actor, in this novel Laila Majnun created by Nizami Ganjavi is a girl that has important role in education and going to be culture value for her children. Because a girl is going to be moral value for young generation. So, a girl must be a good mother and good wife in her environment or her family. In that case, a girl has obligation to carry her life, therefore, a girl prepared for the duty of future life. The way to get it is by giving education about moral value used by society. The purpose of this research is to describe the objective of Laila as the first actor in the novel Laila Majnun created by Nizami Ganjavi. The focused of this research are the character, the feeling and the Laila's soul condition in Novel Laila Majnun created by Nizami Ganjavi. The use of method in this research is Qualitative Descriptive. Qualitative descriptive here is focused on the part of story phenomenon

Magnetization dynamics in Co2MnGe/Al2MnGe/Al2O3$/Co tunnel junctions grown on different substrates

We study static and dynamic magnetic properties of Co2MnGe (13 nm)/Al2O3 (3 nm)/Co (13 nm) tunnel magnetic junctions (TMJ), deposited on various single crystalline substrates (a-plane sapphire, MgO(100), Si(111)). The results are compared to the magnetic properties of Co and of Co$_{2}$MnGe single films lying on sapphire substrates. X-rays diffraction always shows a (110) orientation of the Co$_{2}$MnGe films. Structural observations obtained by high resolution transmission electron microscopy confirmed the high quality of the TMJ grown on sapphire. Our vibrating sample magnetometry measurements reveal in-plane anisotropy only in samples grown on a sapphire substrate. Depending on the substrate, the ferromagnetic resonance spectra of the TMJs, studied by the microstrip technique, show one or two pseudo-uniform modes. In the case of MgO and of Si substrates only one mode is observed: it is described by magnetic parameters (g-factor, effective magnetization, in-plane magnetic anisotropy) derived in the frame of a simple expression of the magnetic energy density; these parameters are practically identical to those obtained for the Co single film. With a sapphire substrate two modes are present: one of them does not appreciably differ from the observed mode in the Co single film while the other one is similar to the mode appearing in the Co$_{2}$MnGe single film: their magnetic parameters can thus be determined independently, using a classical model for the energy density in the absence of interlayer exchange coupling.Comment: 5 pages, 6 figure