Results 61 to 70 of about 226,197 (268)
A comparative analysis of GEANT4, MCNP6 and FLUKA on proton‐induced gamma‐ray simulation
Medical Physics, EarlyView.Abstract BackgroundPrecise range verification is essential in proton therapy to minimize treatment margins due to the steep dose fall‐off of proton beams. The emission of secondary radiation from nuclear reactions between incident particles and tissues stands out as a promising method for range verification.
Hugo Freitas +3 more
wiley +1 more source
Meson-baryon sigma terms in QCD Sum Rules
, 2007 We evaluate the pion-nucleon and the pion-Delta sigma terms by employing the method of quantum chromodynamics (QCD) sum rules. The obtained value of the pion-nucleon sigma term is compatible with the larger values already anticipated by the recent ...
Belyaev +45 more
core +1 more source
Understanding the Mechanism of Cardiotoxicity Induced by Nanomaterials: A Comprehensive Review
Small Science, EarlyView.This review provides a bibliometric analysis for understanding the study of nanotoxicity on cardiovascular health. It begins by outlining the pathways through which nanomaterials enter the cardiovascular system, followed by a summary of the mechanisms underlying nanomaterial‐induced cardiotoxicity.
Zaiyong Zheng +7 more
wiley +1 more source
Quark structure of the pion and pion form factor [PDF]
Phys.Rev. D52 (1995) 5295-5307, 1995 We consider the pion structure in the region of low and moderately high momentum transfers: at low $Q^2$, the pion is treated as a composite system of constituent quarks; at moderately high momentum transfers, $Q^2=10\div25\;GeV^2$, the pion \ff is calculated within perturbative QCD taking into account one--gluon hard exchange.
arxiv +1 more source
, 2006 The mean field (MF) approximation for the pion matter, being equivalent to the leading ChPT order, involves no dynamical loops and, if self-consistent, produces finite renormalizations only.
A. Dobado +27 more
core +1 more source
Vector form factor of the pion : A model-independent approach [PDF]
, 2002 We study a model-independent parameterization of the vector pion form factor that arises from the constraints of analyticity and unitarity. Our description should be suitable up to s^(1/2) ~ 1.2 GeV and allows a model-independent determination of the ...
A. Pich +26 more
core +3 more sources
Meson-meson scattering lengths at maximum isospin from lattice QCD
, 2021 We summarize our lattice QCD determinations of the pion-pion, pion-kaon and kaon-kaon s-wave scattering lengths at maximal isospin with a particular focus on the extrapolation to the physical point and the usage of next-to-leading order chiral ...
Helmes, Christopher +7 more
core +1 more source
Archaeometry, EarlyView.Abstract The research focuses on jewellery finds uncovered in the region of today's Czech Republic dated to the Great Migration Period. The metals and garnet inlays detected were examined with μ‐EDXRF, whereas, for glass samples, LA‐ICP‐MS was used. The paper presented is supplemented with data concerning the technological processing of the jewellery ...
Zuzana Zlámalová Cílová +5 more
wiley +1 more source
Signal of the pion string at high-energy collisions [PDF]
Phys.Rev.C71:014902,2005, 2004 We study the possible signals of a pion string associated with the QCD chiral phase transition in LHC Pb - Pb collision at energy $ \sqrt{s}=5.5$ TeV. In terms of the Kibble-Zurek mechanism we discuss the production and evolution of the pion string. The pion string is not topologically stable, it decays into neutral pions and sigma mesons which in turn
arxiv +1 more source
Decay Widths of X(1835) as Nucleon-Antinucleon Bound State
, 2012 Partial decay widths of various decay channels of the X(1835) are evaluated in the 3P0 quark model, assuming that the X(1835) is a nucleon-antinucleon bound state.
Faessler, Amand +3 more
core +1 more source