Results 71 to 80 of about 231,942 (269)

Pion nucleus Drell–Yan process and parton transverse momentum in the pion

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
We present a thorough analysis of unpolarized Drell–Yan (DY) pair production in pion–nucleus scattering. On the nucleus side, we use nuclear parton distributions along with parametrisations of the nucleon partonic transverse distribution available in the
Federico Alberto Ceccopieri   +3 more
doaj   +1 more source

Food effect risk assessment in preformulation stage using material sparing µFLUX methodology

open access: yesADMET and DMPK, 2022
The intake of food and meal type can strongly impact the bioavailability of orally administered drugs and can consequently impact drug efficacy and safety.
Corinne Jankovsky   +2 more
doaj   +1 more source

Pion-Nucleon Scattering and Pion-Pion Interaction [PDF]

open access: yesProgress of Theoretical Physics, 1962
Applying Cini-Fubini approximation to the Mandelstam representation for pion-nucleon scattering amplitude, we treat explicitly the effect of pion-pion interaction to be added to the dispersion relation given by Chew, Goldberger, Low and Nambu. On account of scanty information on the contribution to tl:e dispersion .integral from high-mass states, we ...
openaire   +1 more source

The Unexpected Actor? Civil‐Military Relations and Regulatory Agency Control in Brazil

open access: yesGovernance, Volume 39, Issue 1, January 2026.
ABSTRACT Democratic backsliding around the world has sparked debate about its impact on public administration and governance. This article explores a growing yet less visible phenomenon threatening democracy. It examines the influence exerted by authoritarian populists over autonomous regulatory agencies through militarized patronage, that is, the ...
Bruno Queiroz Cunha   +2 more
wiley   +1 more source

On the impact of mass difference between the pions (π±-π0) and the nucleons (n-p) on the charge independence breaking of nuclear forces

open access: yesЯдерна фізика та енергетика, 2017
Charge dependence of the pion-nucleon coupling constants and the 1S0-state low-energy nucleon-nucleon scattering parameters are studied on the basis of the Yukawa meson theory.
V. A. Babenko, N. M. Petrov
doaj  

Neutrino-induced coherent pion production off nuclei reexamined

open access: yes, 2009
It is pointed out that so far all theoretical estimates of coherent pion production off nuclei induced by neutrinos rely on the 'local approximation' well known in photonuclear physics. The effects of dropping this approximation are discussed.
Federico Sanchez   +5 more
core   +2 more sources

Relativistic corrections to the Pionium Lifetime [PDF]

open access: yes, 1999
Next to leading order contributions to the pionium lifetime are considered within non-relativistic effective field theory. A more precise determination of the coupling constants is then needed in order to be consistent with the relativistic pion-pion ...
A. Gall   +6 more
core   +4 more sources

Thermal pions [PDF]

open access: yesNuclear Physics A, 1994
7 pp, LaTeX, uses espcrc1.sty from North-Holland Publishing, BUTP-93 ...
openaire   +2 more sources

Exploring a Dynamic Template Matching Algorithm for the Automatic Extraction of P3 Latencies

open access: yesPsychophysiology, Volume 63, Issue 1, January 2026.
ABSTRACT In this study, we explore a novel template matching algorithm using the grand average as a dynamic template to extract P3 latencies. This new algorithm outperforms peak latency and fractional area latency algorithms in both empirical as well as simulated data.
Sven Lesche   +4 more
wiley   +1 more source

Evaluation of the two lightest quark masses

open access: yesЯдерна фізика та енергетика, 2017
Simple relations between the masses of the two lightest up and down quarks were obtained on the basis of the simple physically based model compatible with the present-day theory of strong interactions, i.e. with quantum chromodynamics.
V. A. Babenko, N. M. Petrov
doaj  

Home - About - Disclaimer - Privacy