Results 61 to 70 of about 164,628 (263)
European Physical Journal C: Particles and Fields, 2018 We calculate the octet baryon magnetic moments in covariant baryon chiral perturbation theory with the extended-on-mass-shell renormalization scheme up to next-to-next-to-leading order.
Yang Xiao +4 more
doaj +1 more source
On the Baryon Fractions in Clusters and Groups of Galaxies [PDF]
, 2010 We present the baryon fractions of 2MASS groups and clusters as a function of cluster richness using total and gas masses measured from stacked ROSAT X-ray data and stellar masses estimated from the infrared galaxy catalogs. We detect X-ray emission even
Anderson +50 more
core +1 more source
A Brief, Biased View of Neutron Star Cooling
Astronomische Nachrichten, Volume 346, Issue 1, January 2025.ABSTRACT This is a concise and non‐technical review of topics related to neutron star (NS) cooling, for both young NSs and NSs in low‐mass x‐ray binaries. Neutrino emission from the NS core drives cooling rates, via different processes including Urca processes and pair breaking and formation at the neutron superfluid critical temperature.
Craig Heinke
wiley +1 more source
Baryon decays to purely baryonic final states [PDF]
Scientific Reports, 2019 AbstractThe LHCb collaboration has presented first experimental evidence that spin-carrying matter and antimatter differ. The study looked at four-body decays of the $${{\boldsymbol{\Lambda }}}_{{\boldsymbol{b}}}^{{\bf{0}}}$$ Λ
Y. K. Hsiao +3 more
openaire +5 more sources
Effects of hyperfine interactions on masses of N and Δ baryons
Iranian Journal of Physics Research, 2009 Presenting a model for theoretical study of baryon masses, either in relativistic or nonrelativistic area, has always been of great importance and several suggestions have been proposed.
H Hassanabadi, S Zarrinkamar, AA Rajabi
doaj
Radial excitations of the decuplet baryons
European Physical Journal C: Particles and Fields, 2017 The ground and first excited states of the decuplet baryons are studied using the two-point QCD sum rule approach. The mass and residue of these states are computed and compared with the existing experimental data and other theoretical predictions.
T. M. Aliev, K. Azizi, H. Sundu
doaj +1 more source
Baryons and baryonic matter in the large Nc and heavy quark limits [PDF]
Phys.Rev.C84:015204,2011, 2011 This paper explores properties of baryons and finite density baryonic matter in an artificial world in which Nc, the number of colors, is large and the quarks of all species are degenerate and much larger than {\Lambda}_QCD. It has long been known that in large Nc QCD, baryons composed entirely of heavy quarks are accurately described in the mean-field
arxiv +1 more source
Physik in unserer Zeit, Volume 56, Issue 1, Page 30-37, January 2025.Galaxien wie die Milchstraße sind umhüllt von einem gigantischen Kokon aus diffusem Gas. Aktuelle Forschungsergebnisse belegen, dass dieses zirkumgalakische Medium eine entscheidende Rolle für die Entstehung und Entwicklung von Galaxien spielt. Zusammenfassung Als zirkumgalaktisches Medium bezeichnet man die gasförmigen Hüllen von Galaxien, die sich ...
Philipp Richter
wiley +1 more source
Theoretical Nuclear Physics in Italy, 2003 20 pages, no figures, invited general report at the "IX Convegno su Problemi di Fisica Nucleare e Teorica", Cortona, Oct.
openaire +2 more sources
The eta' in baryon chiral perturbation theory
, 2000 We include in a systematic way the eta' in baryon chiral perturbation theory. The most general relativistic effective Lagrangian describing the interaction of the lowest lying baryon octet with the Goldstone boson octet and the eta' is presented up to ...
B. Borasoy +11 more
core +1 more source