Results 21 to 30 of about 424,912 (298)

Meson Resonances at large Nc: Complex Poles vs Breit-Wigner Masses [PDF]

, 2009
The rigorous quantum mechanical definition of a resonance requires determining the pole position in the second Riemann sheet of the analytically continued partial wave scattering amplitude in the complex Mandelstam s-variable plane.
Arriola, E. Ruiz, Nieves, J.
core   +3 more sources

Avaliação da orientação molecular de moldados de polipropileno utilizando figuras de pólo obtidas por difração de raios X Evaluation of the molecular orientation of injection molded polypropylene using X-ray pole figures

Polímeros, 2007
Neste trabalho, avaliou-se a influência do perfil de velocidades de injeção utilizado durante a etapa de preenchimento na orientação molecular da fase cristalina, de amostras de polipropileno moldadas por injeção. As medidas de orientação molecular foram
Álvaro M. Almeida, Márcia C. Branciforti, Rosario E. S. Bretas   +2 more
doaj   +1 more source

On the position of a heavy Higgs pole [PDF]

, 1996
Higher loop calculations in the Higgs sector of the standard model at the Higgs mass scale have shown that perturbation theory diverges very badly at about 1 TeV in the on-shell renormalization scheme.
Adrian Ghinculov, Beenakker, Borodulin, Brodsky, Durand, Durand, Durand, Einhorn, Frink, Ghinculov, Ghinculov, Ghinculov, Ghinculov, Ghinculov, Ghinculov, Marciano, Nierste, Thomas Binoth, Willenbrock   +18 more
core   +2 more sources

Pseudoscalar Vertex, Goldstone Boson and Quark Masses on the Lattice [PDF]

, 1998
We analyse the Structure Function collaboration data on the quark pseudoscalar vertex and extract the Goldstone boson pole contribution, in 1/p2. The strength of the pole is found to be quite large at presently accessible scales.
Alain Le Yaouanc, Bali, Bernard, Carlotta Pittori, Göckeler, Jean-René Cudell, Lane, Lüscher, Pagels, Pagels, Pascual, Politzer, Sheikholeslami   +12 more
core   +2 more sources

Gluonic effects in vector meson photoproduction at large momentum transfers [PDF]

, 2001
Non-perturbative QCD mechanisms are of fundamental importance in strong interaction physics. In particular, the flavor singlet axial anomaly leads to a gluonic pole mechanism which has been shown to explain the $\eta^{\prime}$ mass, violations of the OZI
Anciant, Anselmino, Barber, Battaglieri, Bunce, Cano, Collins, Diakonov, Donnachie, Donnachie, Ebert, Guidal, Khoze, Kochelev, Koepf, Krisch, Laget, Laget, Laget, N.I Kochelev, Narison, Oh, Shore, Shore, Stoks, Titov, V Vento, Veneziano, Veneziano, Williams, Zhao   +30 more
core   +2 more sources

Changer in the texture orientation of electrolytic nickel by cold air plasma

Литьë и металлургия, 2020
The effects of cold air plasma influence on the change in the microstructure, stress state and texture of the cathode nickel brand H-1 were studied. By the method of target metallography it has been established that the microstructure does not change ...
A. G. Anisovich, T. P. Urban, I. I. Filatova, A. S. Buynitskaya, S. V. Goncharik   +4 more
doaj   +1 more source

Twist-3 Formalism for Single Transverse Spin Asymmetry Reexamined: Semi-Inclusive Deep Inelastic Scattering [PDF]

, 2006
We study the single spin asymmetry (SSA) for the pion production in semi-inclusive deep inelastic scattering, $ep^\uparrow\to e\pi X$, in the framework of the collinear factorization. We derive the complete cross section formula associated with the twist-
Adams, Adams, Adams, Adler, Ageev, Airapetian, Alexakhin, Anselmino, Anselmino, Anselmino, Bacchetta, Barone, Belitsky, Boer, Boer, Bomhof, Bomhof, Bomhof, Bunce, Collins, Collins, Collins, Collins, Collins, Collins, Deshpande, Diefenthaler, Efremov, Efremov, Eguchi, Glück, Guo, Hisato Eguchi, Jaffe, Ji, Ji, Ji, Ji, Ji, Kanazawa, Kanazawa, Kanazawa, Kane, Kazuhiro Tanaka, Kniehl, Kodaira, Koike, Koike, Koike, Koike, Koike, Koike, Kouvaris, Liang, Lundberg, Luo, Mendez, Meng, Morozov, Qiu, Qiu, Qiu, Ramberg, Sivers, Sivers, Smith, Videbaek, Yuji Koike   +67 more
core   +2 more sources

Race to the Pole: Matthew Henson, Arctic Explorer

American Studies in Scandinavia, 2022
In his memoir, A Negro Explorer at the North Pole (1912), Matthew Henson describes the toll of his and Peary’s race to the Pole. This record of the 1908-09 Arctic expedition complicates established understandings of the “Dash to the Pole” and his own ...
Clara Junker
doaj   +1 more source

3D MORPHOLOGICAL ANALYSIS OF COMPOSITE MATERIALS WITH AGGREGATES OF SPHERICAL INCLUSIONS

Image Analysis and Stereology, 2011
Composite materials containing aggregates of spherical inclusions are studied from 3D images obtained by X-ray microtomography. Using two point statistics in different directions, and the empirical distribution of orientations of pairs of inclusions ...
Arnaud Delarue, Dominique Jeulin
doaj   +1 more source

New Analysis of the Single Transverse-Spin Asymmetry for Hadron Production at RHIC

, 2010
We analyze the single transverse-spin asymmetry (SSAs) for inclusive hadron production in the $pp$ collision at RHIC based on the twist-3 mechanism in QCD.
Kanazawa, Koichi, Koike, Yuji
core   +1 more source