Results 111 to 120 of about 2,316,597 (371)

Fixed-Angle Elastic Hadron Scattering [PDF]

, 1999
The scattering amplitude in the dual model with Mandelstam analyticity and trajectory $\alpha (s)=\alpha_{0}-\gamma \ln [ (1+\beta \sqrt{s_{0} -s})/(1+ \beta \sqrt{s_{0}})]$ is studied in the limit $s,|t|\to \infty, s/t=const.$ By using the saddle point ...
A. Duncan, A. H. Mueller, A. I. Bugrij, A. V. Efremov, D. D. Coon, F. Paccanoni, G. P. Lepage, G. R. Farrar, H. Kluberg, H. Kluberg, H. Kluberg, J. Botts, J. C. Collins, J. Polchinski, L. L. Jenkovszky, L. L. Jenkovszky, M. Arik, M. J. Schmidt, N. Isgur, P. V. Landshoff, P. V. Landshoff, P. V. Landshoff, R. Fiore, S. J. Brodsky, S. J. Brodsky, V. A. Matveev, V. K. Magas, V. Magas   +27 more
core   +4 more sources

Influence of Temperature on Scratch and Wear Properties of Technical Thermoplastics: Implications for Material Selection

Advanced Engineering Materials, EarlyView.
The share of technical thermoplastics is expected to grow further in the e‐mobility segment. In this study, a detailed temperature‐based tribological characterization of technical thermoplastics is performed. The tribological properties are discussed in terms of the dynamic mechanical properties of polymers at different ambient temperatures. A proof of
Harsha Raghuram, Thomas Koch, Vasiliki-Maria Archodoulaki   +2 more
wiley   +1 more source

QCD factorizations in gamma* gamma* -> rho rho

, 2006
We calculate the lowest order QCD amplitude, i.e. the quark exchange contribution, to the forward production amplitude of a pair of longitudinally polarized $\rho$ mesons in the scattering of two virtual photons $\gamma^*(Q_1) \gamma^*(Q_2) \to \rho^0_L \
Anikin, Anikin, B. Pire, Blümlein, Brodsky, Diehl, Diehl, Diehl, Diehl, Efremov, Enberg, Ji, Ji, L. Szymanowski, Lansberg, Lepage, M. Segond, Mandelstam, Mankiewicz, Müller, Pire, Pire, Pire, Radyushkin, Radyushkin, S. Wallon   +25 more
core   +2 more sources

Black-hole scattering with general spin directions from minimal-coupling amplitudes [PDF]

Physical Review D, 2019
We study the link between classical scattering of spinning black holes and quantum amplitudes for massive spin-$s$ particles. Generic spin orientations of the black holes are considered, allowing their spins to be deflected on par with their momenta.
A. Guevara, Alexander Ochirov, J. Vines
semanticscholar   +1 more source

AN INTEGRAL EQUATION FOR SCATTERING AMPLITUDES

Physical Review Letters, 1969
We outline a dynamical scheme for studying Regge behavior of scattering amplitudes. It is based on unitarity and the concept of short-range momentum-space correlations in high-energy processes.
Chew, G. F., Goldberger, M. L., Low, F. E.   +2 more
openaire   +4 more sources

X‐Ray Computed Tomography Quantifies Primary Phases and Reveals Crack Morphology in High‐Cycle Fatigue of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
Primary phases and a fatigue crack are studied in a forged blank of an aluminum alloy using synchrotron and laboratory X‐ray computed tomography. To image the crack, the fatigue test is interrupted, and a static tensile load is applied to open the crack.
Jakob Schröder, Ying Han, Tobias Fritsch, Bardia Hejazi, Alexander Ulbricht, Birgit Skrotzki, Giovanni Bruno   +6 more
wiley   +1 more source

Photon-photon scattering from a UV-complete gravity QFT

Journal of High Energy Physics, 2022
Quantum quadratic gravity (QQG) produces a tree-level differential cross section for γγ → γγ that is well-behaved at all energies. From this we can study how the corrections to low energy scattering amplitudes are related to the UV physics, in particular
Bob Holdom
doaj   +1 more source

Two-Dimensional Attenuation and Velocity Tomography of Iran

Geosciences, 2022
Seismic bulletin data collected by the Iranian Seismological Center are used to image crust and mantle seismic attenuation, group velocity, and phase velocities for Lg, Pg, Sn, and Pn phases.
Thomas M. Hearn
doaj   +1 more source

Gravitation interaction with extra dimension and periodic structure of the hadron scattering amplitude

, 2011
The behavior of the hadron scattering amplitude determined by the gravitation interaction of hadron at high energies with impact of the KK-modes in d-brane models of gravity is examined. The possible periodic structure of the scattering amplitude and its
Appelquist T., Han T., Kaluza T., O. V. SELYUGIN, Selyugin O. V., Selyugin O. V., Selyugin O. V.   +6 more
core   +1 more source

Scattering amplitude of ultracold atoms near the p-wave magnetic Feshbach resonance [PDF]

, 2010
Most of the current theories on the p-wave superfluid in cold atomic gases are based on the effective-range theory for the two-body scattering, where the low-energy p-wave scattering amplitude f{sub 1}(k) is given by f{sub 1}(k)=-1/[ik+1/(Vk{sup 2})+1/R].
Peng Zhang, P. Naidon, Masahito Ueda
semanticscholar   +1 more source