Testing non-commutative QED $\gamma\gamma\gamma$ and $\gamma\gamma\gamma\gamma$ couplings at LHC [PDF]
In this work, we investigate the sensitivity of the process p + p --> q + q --> j + j + gamma + gamma at LHC for the photonic 3- and 4- point functions that appear in non commutative QED. We show that this process serves to study the behavior of the space-space as well as of the space-time non commutativity.
S. M. Lietti, C. A. de S. Pires
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The $\gamma \gamma \to A^0 A^0 $ process at a $\gamma \gamma $ collider [PDF]
The helicity amplitudes for the process $\gamma \gamma \to A^0 A^0$ are studied to 1-loop order in the minimal SUSY (MSSM) model, where $A^0$ is the CP-odd Higgs particle. Simple exact analytic formulae are obtained, in terms of the $C_0$ and $D_0$ Passarino-Veltman functions; in spite of the fact that the loop-diagrams often involve different ...
Gounaris, G. J., Porfyriadis, P. I.
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$\gamma\gamma \to \gamma \gamma$ scattering in ultrarelativistic UPC [PDF]
Comment: 5 pages, 3 figures, talk was given by Antoni Szczurek at European Physical Society conference on High Energy Physics (EPS-HEP 2017), Venice, Italy. Two references were added.
Szczurek, Antoni +1 more
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Interpolation of families $\{L^{p(\gamma)}_{\mu(\gamma)}, \gamma\in\Gamma\}$ [PDF]
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Carro Rossell, María Jesús, Cerdà, J.
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For the spacelike momenta k of the virtual photon gamma^*, the pi^0(p) gamma^*(k) gamma(k') transition form factor is considered in the coupled Schwinger-Dyson and Bethe-Salpeter approach in conjunction with the generalized impulse approximation using the dressed quark-photon-quark vertices of the Ball-Chiu and Curtis-Pennington type.
Klabučar, Dubravko, Kekez, Dalibor
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Status of gamma-gamma and gamma-electron colliders [PDF]
This report on Photon Colliders briefly reviews three main issues: physics motivation, possible parameters and technical feasibility, plans of works and international cooperation. New scheme of laser optics at the interaction region is described which can drastically (at least by one order) reduce the cost of the laser system.
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Positive, continuous, and right-skewed data are fit by a mixture of gamma and inverse gamma distributions. For 16 hierarchical models of gamma and inverse gamma distributions, there are only 8 of them that have conjugate priors. We first discuss some common typical problems for the eight hierarchical models that do not have conjugate priors.
Li Zhang, Ying-Ying Zhang
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The $\gamma \gamma \to \gamma \gamma $ process in the standard and SUSY models at high energies [PDF]
We study the helicity amplitudes of the process γγ\to γγat high energy, which in the standard and SUSY models first arise at the one-loop order. In the standard model (SM), the diagrams involve W and charged quark and lepton loops, while in SUSY we also have contributions from chargino, charged sfermion and Higgs loop diagrams.
Gounaris, G. J. +2 more
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Effect of Different Water Sources on Pond Water Quality, Growth, and Production Performance of Whiteleg Shrimp (Litopenaeus vannamei) in Deeba Triangle, Egypt: A Comparative Field Study [PDF]
Shrimp aquaculture, particularly of Litopenaeus vannamei, is a vital component of global food systems and is rapidly expanding in regions like Egypt’s Deeba Triangle, where variable water sources affect farm productivity.
Merna Elsawaf +4 more
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Land subsidence and associated ground fracturing: study cases in central Mexico with ALOS-2 PALSAR-2 ScanSAR Interferometry [PDF]
Land subsidence affects highly developed urban areas in central Mexico, where inhabitants rely on groundwater for about 60 % of water supply and most of the cities are located in volcanic valleys filled with fine and coarse grained sediments ...
T. Strozzi +2 more
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