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田屋 英俊*; Park, A.*; Cho, S.*; Gubler, P.; 服部 恒一*; Hong, J.*; Huang, X.-G.*; Lee, S. H.*; 門内 明彦*; 大西 明*; et al.
Physical Review C, 102(2), p.021901_1 - 021901_6, 2020/08
被引用回数:8 パーセンタイル:68.72(Physics, Nuclear)We investigate the hadron production from the vortical quark-gluon plasma created in heavy-ion collisions. Based on the quark-coalescence and statistical hadronization models, we show that total hadron yields summed over the spin components are enhanced by the local vorticity with quadratic dependence. The enhancement factor amounts to be a few percent and may be detectable within current experimental sensitivities. We also show that the effect is stronger for hadrons with larger spin, and thus propose a new signature of the local vorticity, which may be detected by the yield ratio of distinct hadron species having different spins such as and . The vorticity dependence of hadron yields seems robust, with consistent predictions in both of the hadron production mechanisms for reasonable values of the vorticity strength estimated for heavy-ion collisions.
Kim, H.*; Kim, K. S.*; Cheoun, M.-K.*; 岡 眞
Physical Review D, 97(9), p.094005_1 - 094005_17, 2018/05
被引用回数:14 パーセンタイル:58.56(Astronomy & Astrophysics)アイソスピン0のスカラー中間子に対して、テトラクォーク描像を用いて、その状態混合の可能性を調べた。その結果を崩壊の解析にも応用した。
Gubler, P.; Kim, H. J.*; Lee, S. H.*
no journal, ,
有限運動量を持つ核物質中のphiメソンの振る舞いについての最近の研究の進捗状況について報告する。J-PARCのE16実験との関連についても議論する。