Nuclear Theory·nucl-th

Monday·November 23, 2015

11 papers—8 primary·3 cross-listed

09
Topological Susceptibility in Three-Flavor Quark Meson Model at Finite Temperature
Yin Jiang🇺🇸 · Tao Xia🇨🇳 · Pengfei Zhuang🇨🇳
We study $U_{A} (1)$ symmetry and its relation to chiral symmetry at finite temperature through the application of functional renormalization group to the $S U (3)$ quark meson model. Very different from the mass gap and mixing angel between $η$ and $η^{'}$ mesons which are defined at mean field level and behavior like the chiral condensates, the topological susceptibility includes a fluctuations induced part which becomes dominant at high temperature. As a result, the $U_{A} (1)$ symmetry is still considerably broken in the chiral symmetry restoration phase.
↳ hep-phhep-thnucl-thPRD(2016)·25 citations
10
Secondary electrons emitted during nuclear $β^{-}$ decay in few-electron atoms
Alexei M. Frolov · David M. Wardlaw
`Additional' ionization of light atoms and ions during nuclear $β^{-}$ decay is investigated. The procedure which can be used to determine the corresponding transition probabilities and the velocity/energy spectrum of secondary electrons is developed. Emission of very fast secondary electrons ( $δ -$ electrons) from $β^{-}$ -decaying atoms is also briefly discussed.
↳ physics.atom-phnucl-thPRC(2016)·1 citation
11
Nonperturbative contribution to the strange-antistrange asymmetry of the nucleon sea
Alfredo Vega🇺🇸 · Ivan Schmidt🇨🇱 · Thomas Gutsche🇩🇪 · Valery E. Lyubovitskij🇷🇺
We give predictions for the nonperturbative (intrinsic) contribution to the $s (x) - s ˉ (x)$ asymmetry of the nucleon sea. For this purpose we use different light-front wave functions inspired by the AdS/QCD formalism, together with a model of the nucleon in terms of meson-baryon fluctuations. The holographic wave functions for an arbitrary number of constituents, recently derived by us, give results quite close to known parametrizations that appear in the literature.
↳ hep-phnucl-thPRD(2016)·18 citations

Affiliations

first authorsco-authorsvia INSPIRE

Topological Susceptibility in Three-Flavor Quark Meson Model at Finite Temperature

Secondary electrons emitted during nuclear β− decay in few-electron atoms

Nonperturbative contribution to the strange-antistrange asymmetry of the nucleon sea

Affiliations

Secondary electrons emitted during nuclear $β^{-}$ decay in few-electron atoms