Results 41 to 50 of about 1,670,847 (343)
Semiclassical analysis of axion-assisted and axion-driven pair production
Journal of High Energy Physics, 2022 We study the pair production of fermions in a time dependent axion background with and without an electric background. We construct the adiabatic mode functions which incorporate the gauge field and the axion velocity dependence of the dispersion ...
Hiroyuki Kitamoto, Masaki Yamada
doaj +1 more source
Symposium - International Astronomical Union, 1989 The X-ray luminosity and variability of many AGN are sufficiently extreme that any hard γ-rays produced in the source will collide with the X-rays and create electron-positron pairs, rather than escape. A small region where vast amounts of energy are produced, such as an AGN, is an ideal place to accelerate particles to relativistic energies and so ...
C. Done, A. C. Fabian
openaire +1 more source
Mapping the evolution of mitochondrial complex I through structural variation
FEBS Letters, EarlyView.Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin +2 more
wiley +1 more source
Lepton-pair production in ultraperipheral collisions at AFTER@LHC [PDF]
, 2015 We investigate the potentialities offered by the study of lepton-pair production in ultraperipheral collisions at a fixed-target experiment using the proton and ion LHC beams. In these collisions, exclusive or semi-exclusive lepton-pair production can be
Lansberg, J. P. +2 more
core +4 more sources
More on the open string pair production
Nuclear Physics B, 2022 Motivated by the recent work [1] by one of the present authors, we here report that there exist two new systems, namely, D3/(F, D1) and D3/(D3, (F, D1)), either of which can give rise to a much larger sizable open string pair production rate at a ...
J.X. Lu, Nan Zhang
doaj +1 more source
FEBS Letters, EarlyView.Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho +3 more
wiley +1 more source
Sobre o limiar para a produção de pares e localização de partículas sem spin
Revista Brasileira de Ensino de FísicaA equação de Klein-Gordon em uma dimensão espacial é investigada com a mais geral estrutura de Lorentz para os potenciais externos. A análise do espalhamento de partículas em um potencial degrau com uma mistura arbitrária de acoplamentos vetorial e ...
Tatiana R. Cardoso, Antonio S. de Castro
doaj +1 more source
FEBS Letters, EarlyView.In this study, we present the structure of AcrIE8.1, a previously uncharacterized anti‐CRISPR protein that inhibits the type I‐E CRISPR‐Cas system. Through a combination of structural and biochemical analyses, we demonstrate that AcrIE8.1 directly binds to the Cas11 subunit of the Cascade complex to inhibit the CRISPR‐Cas system.
Young Woo Kang, Hyun Ho Park
wiley +1 more source
On Schwinger's formula for pair production
, 2014 We present some comments on Schwinger's calculation of electron-positron production in a prescribed constant electric field.
Dittrich, Walter
core +1 more source
Slepton pair production with aNNLO+NNLL precision
Journal of High Energy Physics, 2020 We present a calculation of slepton pair production at the LHC at next-to-next- to-leading logarithmic (NNLL) accuracy, matched to approximate next-to-next-to-leading order (aNNLO) QCD corrections. We collect the relevant analytical formulae, discuss the
Juri Fiaschi +2 more
doaj +1 more source