000032028 001__ 32028
000032028 005__ 20190516220148.0
000032028 022__ $$a2469-9993
000032028 0247_ $$2DOI$$9APS$$a10.1103/PhysRevC.99.045201$$t2019-04-02T19:35:57Z
000032028 037__ $$9arXiv$$aarXiv:1808.04179$$aarXiv:1808.04179$$cnucl-th$$chep-ph
000032028 100__ $$aFriesen, A.V.$$uBogoliubov Laboratory of Theoretical Physics (BLTP), Joint Institute for Nuclear Research, 141982 Dubna, Russia$$wRussia
000032028 100__ $$aKalinovsky, Yu. L.$$uBogoliubov Laboratory of Theoretical Physics (BLTP), Joint Institute for Nuclear Research, 141982 Dubna, Russia$$wRussia
000032028 100__ $$aToneev, V.D.$$uBogoliubov Laboratory of Theoretical Physics (BLTP), Joint Institute for Nuclear Research, 141982 Dubna, Russia$$wRussia
000032028 245__ $$9APS$$aStrange matter and kaon to pion ratio in the SU(3) Polyakov–Nambu–Jona-Lasinio model
000032028 260__ $$bAPS$$c2019-04-02
000032028 300__ $$a7
000032028 520__ $$9APS$$aThe behavior of strange matter in the frame of the SU(3) Polyakov-loop extended Nambu–Jona-Lasinio (PNJL) model including the <math><mrow><msub><mi>U</mi><mi>A</mi></msub><mrow><mo>(</mo><mn>1</mn><mo>)</mo></mrow></mrow></math> anomaly is considered. We discuss the appearance of a peak in the ratio of the number of strange mesons to nonstrange mesons known as the “horn.” The PNJL model gives a schematic description of the chiral phase transition and meson properties at finite temperature and density. By using the model, we can show that the splitting of kaon and antikaon masses appears as a result of the introduction of density. This may explain the difference in the <math><mrow><msup><mi>K</mi><mo>+</mo></msup><mo>/</mo><msup><mi>π</mi><mo>+</mo></msup></mrow></math> ratio and the <math><mrow><msup><mi>K</mi><mo>−</mo></msup><mo>/</mo><msup><mi>π</mi><mo>−</mo></msup></mrow></math> ratio at low <math><msqrt><msub><mi>s</mi><mrow><mi>N</mi><mi>N</mi></mrow></msub></msqrt></math> and their tendency to the same value at high <math><msqrt><msub><mi>s</mi><mrow><mi>N</mi><mi>N</mi></mrow></msub></msqrt></math>. We also show that the rise in the ratio <math><mrow><msup><mi>K</mi><mo>+</mo></msup><mo>/</mo><msup><mi>π</mi><mo>+</mo></msup></mrow></math> appears near the critical endpoint when we build the <math><mrow><msup><mi>K</mi><mo>+</mo></msup><mo>/</mo><msup><mi>π</mi><mo>+</mo></msup></mrow></math> ratio along the phase-transition diagram and it can be considered as a critical region signal.
000032028 540__ $$aCC-BY-4.0$$uhttps://creativecommons.org/licenses/by/4.0/
000032028 542__ $$fPublished by the American Physical Society
000032028 541__ $$aAPS$$cAPS$$d2019-04-30T10:19:35.878130$$e97bd89826b2011e9a75002163e01809a
000032028 592__ $$a2019-04-09
000032028 773__ $$n4$$pPhysical Review C$$v99$$y2019
000032028 8564_ $$s124406$$uhttps://repo.scoap3.org/record/32028/files/main.xml
000032028 8564_ $$s652365$$uhttps://repo.scoap3.org/record/32028/files/main.pdf