English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We study the mass spectrum of light pseudoscalar and vector mesons in thepresence of an external uniform magnetic field $\vec B$, considering theeffects of the mixing with the axial vector meson sector. The analysis isperformed within a two-flavor NJL-like model which includes isoscalar andisovector couplings together with a flavor mixing 't Hooft-like term. Theeffect of the magnetic field on charged particles is taken into account byretaining the Schwinger phases carried by quark propagators, and expanding thecorresponding meson fields in proper Ritus-like bases. The spin-isospin andspin-flavor decomposition of meson mass states is also analyzed. For neutralpion masses it is shown that the mixing with axial vector mesons improvesprevious theoretical results, leading to a monotonic decreasing behavior with$B$ that is in good qualitative agreement with LQCD calculations, both for thecase of constant or $B$-dependent couplings. Regarding charged pions, it isseen that the mixing softens the enhancement of their mass with $B$. As aconsequence, the energy becomes lower than the one corresponding to a pointlikepion, improving the agreement with LQCD results. The agreement is also improvedfor the magnetic behavior of the lowest $\rho^+$ energy state, which does notvanish for the considered range of values of $B$ -- a fact that can be relevantin connection with the occurrence of meson condensation for strong magneticfields.

Masses of the magnetized pseudoscalar and vector mesons in an extended NJL model: the role of axial vector mesons