Results 101 to 110 of about 221,719 (219)

Effects of the Pion-Pion Resonance and the Three-Pion Resonance or Bound State on Neutral-Pion Decay [PDF]

open access: yesPhysical Review, 1961
The dispersion method was applied to the problem of neutral-pion decay. lt is shown that a pion-pion P-wave resonance can produce a large effect in the decay matrix element. The contribution is related to the semifundamental constant which determines the rate of photoproduction of pions from pions.
openaire   +3 more sources

Uncertainty, Cognitive Control and Theta‐Band Activity: A Relationship That Depends on Metacontrol Requirements

open access: yesHuman Brain Mapping, Volume 46, Issue 14, 01 October 2025.
Uncertainty is typically linked to the need for cognitive control reflected in greater theta band activity. We manipulate uncertainty as a trigger for curiosity in a spatial cueing paradigm. Time–frequency and DICS beamforming results show that uncertainty is not always linked to greater theta band activity.
Seema Prasad   +5 more
wiley   +1 more source

Chiral extrapolation of the sigma resonance

open access: yesPhysics Letters B, 2018
We analyze results on isoscalar ππ scattering from a Nf=2+1 lattice QCD calculation by the HadronSpectrum collaboration by re-summing the two-flavor chiral scattering amplitude of the next-to-leading order in the so-called inverse amplitude method.
Michael Döring, Bin Hu, Maxim Mai
doaj   +1 more source

Pion-Nulceon Scattering and the Structure of the Pion [PDF]

open access: yesProgress of Theoretical Physics, 1957
Effects of the structure'' of the pion on the pionnucleon scattering are discussed. A formal expression of the interaction kernel far the nucleon- antinucleon propagator is given, from which the effective Hamiltonian'' for the emission and absorption of one pion and that for two pions is derived, respectively.
openaire   +2 more sources

Assessing Cytochrome P450 Drug Interaction Risk for Dordaviprone Using Physiologically Based Pharmacokinetic Modeling

open access: yesCPT: Pharmacometrics &Systems Pharmacology, Volume 14, Issue 10, Page 1695-1704, October 2025.
ABSTRACT A physiologically based pharmacokinetic (PBPK) model was developed and verified for dordaviprone, a small molecule with antitumor effects in glioma patients. The model was applied to assess the drug–drug interaction (DDI) potential of dordaviprone as a victim of CYP3A4 inhibitors and inducers, and as a perpetrator of CYP3A4, CYP2C8, CYP2D6 ...
Swati Jaiswal   +6 more
wiley   +1 more source

Equivalence of Nonstatic Two-Pion-Exchange Nucleon-Nucleon Potentials

open access: yes, 1999
Off-shell aspects of the one-pion-exchange potential and their relationship to different forms of the nonstatic (subleading-order) chiral two-pion-exchange nucleon-nucleon potential are discussed.
A. Manohar   +46 more
core   +3 more sources

Management of ischemic optic neuropathies

open access: yesIndian Journal of Ophthalmology, 2011
Ischemic optic neuropathies (IONs) consist primarily of two types: anterior ischemic optic neuropathy (AION) and posterior ischemic optic neuropathy (PION).
Hayreh Sohan
doaj  

Two-pion-exchange parity-violating potential and $\vec{n} p \to d \gamma$

open access: yes, 2006
We calculate the parity-violating nucleon-nucleon potential in heavy-baryon chiral perturbation theory up to the next-to-next-to-leading order. The one-pion exchange comes in the leading order and the next-to-next-to-leading order consists of two-pion ...
B. Desplanques   +12 more
core   +3 more sources

Hard exclusive pion electroproduction at backward angles with CLAS

open access: yesPhysics Letters B, 2018
We report on the first measurement of cross sections for exclusive deeply virtual pion electroproduction off the proton, ep→e′nπ+, above the resonance region at backward pion center-of-mass angles.
K. Park   +121 more
doaj   +1 more source

Global QCD analysis of pion parton distributions with threshold resummation

open access: green, 2022
Patrick Barry   +3 more
openalex   +1 more source

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