Results 71 to 80 of about 326,974 (218)

Positron-Hydrogen Scattering, Annihilation, and Positronium Formation

open access: yesAtoms, 2016
In previous papers (Bhatia A.K. 2007, 2012) a hybrid theory for the scattering of electrons from a hydrogenic system was developed and applied to calculate scattering phase shifts, Feshbach resonances, and photoabsorption processes.
Anand K. Bhatia
doaj   +1 more source

Gamma Lines from Majorana Dark Matter

open access: yes, 2016
We discuss simple models which predict the existence of significant gamma-ray fluxes from dark matter annihilation. In this context the dark matter candidate is a Majorana fermion with velocity-suppressed tree-level annihilation into Standard Model ...
Duerr, Michael   +2 more
core   +1 more source

Analysis of annihilation positron and electron and additional opportunities of the positron-emission tomography

open access: yesФизика волновых процессов и радиотехнические системы, 2014
The reasons of angular photon distribution occurrence at electron-positron annihilation are considered. It is shown, that angular photon distribution is consequence of Dopplers effect in the reference frame of the electron and positron mass center.
A.N. Volobuev, T.A. Antipova
doaj  

Sebuah Analisis Terhadap Problematika Ajaran Restorasi Berkaitan Dengan Konsep Bumi Baru

open access: yesDunamis: Jurnal Teologi dan Pendidikan Kristiani, 2018
Abstraks. The second coming of Christ is an event inalienable to mankind. In addition to declaring punishment for unbelievers, His second coming also fulfils the presence of a new heaven and earth in which the righteous will reign with Christ forever. Of
Yudi Jatmiko
doaj   +1 more source

Mitigating Direct Detection Bounds in Non-minimal Higgs Portal Scalar Dark Matter Models

open access: yes, 2017
Minimal scalar Higgs portal dark matter model is increasingly in tension with recent results form direct detection experiments like LUX and XENON. In this paper we make a systematic study of minimal extension of the $ \mathbb{Z}_2$ stabilised singlet ...
Bhattacharya, Subhaditya   +3 more
core   +1 more source

Annihilator alternative algebras [PDF]

open access: yesPacific Journal of Mathematics, 1983
2. Prerequisites and notation. In this paper, A is always understood to be an alternative algebra. "Ideal" without further qualification will mean "ideal of A". (2.1) N(A) denote the nucleus of A (for the definition of N(A)9 see for example [3]).
openaire   +3 more sources

Synchrotron Emission from Dark Matter Annihilation: Predictions for Constraints from Non-detections of Galaxy Clusters with New Radio Surveys

open access: yes, 2017
The annihilation of dark matter particles is expected to yield a broad radiation spectrum via the production of Standard Model particles in astrophysical environments.
Jeltema, Tesla E.   +3 more
core   +2 more sources

Antideuteron Identification in Space with Helium Calorimeter

open access: yesInstruments
The search for low-energy antideuterons in cosmic rays allows the addressing of fundamental physics problems testing for the presence of primordial antimatter and the nature of Dark Matter.
Francesco Nozzoli   +7 more
doaj   +1 more source

Relativistic dark matter at the Galactic center

open access: yes, 2007
In a large region of the supersymmetry parameter space, the annihilation cross section for neutralino dark matter is strongly dependent on the relative velocity of the incoming particles.
Amin, Mustafa A., Wizansky, Tommer
core   +2 more sources

Reflections of the West in Gu Cheng’s Life and Poems

open access: yesAsian Studies, 2012
Gu Cheng (1957–1993), a prominent member of the “Misty Poets”, lived the last part of his life in the West as he was exiled in 1989. So he stayed abroad separeted from his country and people and unable to cope with the western world.
Anna Simona MARGARITO
doaj   +1 more source

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