Medium effects and parity doubling of hyperons across the deconfinement phase transition
Medium effects and parity doubling of hyperons across the deconfinement phase transition
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超子在解禁相变过程中的中等效应和宇称倍增
DOI:
10.1051/epjconf/201817507016
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发表时间:
2018
影响因子:
--
通讯作者:
Aarts G
中科院分区:
文献类型:
--
作者:
Aarts G
We analyse the behaviour of hyperons with strangenessS= –1,–2,–3 in the hadronic and quark gluon plasma phases, with particular interest in parity doubling and its emergence as the temperature grows. This study uses our FASTSUM anisotropicNf= 2+1 ensembles, with four temperatures below and four above the deconfinement transition temperature,Tc. The positive-parity groundstate masses are found to be largely temperature independent belowTc, whereas the negative-parity ones decrease considerably as the temperature increases. Close to the transition, the masses are almost degenerate, in line with the expectation from chiral symmetry restoration. This may be of interest for heavy-ion phenomenology. In particular we show an application of this effect to the Hadron Resonance Gas model. A clear signal of parity doubling is found aboveTcin all hyperon channels, with the strength of the effect depending on the number of s-quarks in the baryons.
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DOI:
10.1088/1742-6596/432/1/012012
发表时间:
2011-12
期刊:
Journal of Physics: Conference Series
影响因子:
--
作者:
S. Borsányi;Z. Fodor;S. Katz;S. Krieg;C. Ratti;K. Szabó
通讯作者:
S. Borsányi;Z. Fodor;S. Katz;S. Krieg;C. Ratti;K. Szabó
影响因子:
5.4
作者:
Aarts, Gert;Alton, Chris;Shuiierd, Jon-Ivar
通讯作者:
Shuiierd, Jon-Ivar
影响因子:
5.4
作者:
Christopher L. McClendon
通讯作者:
Christopher L. McClendon
DOI:
10.1007/978-3-642-01850-3_1
发表时间:
2010
期刊:
--
影响因子:
--
作者:
C. Gattringer;C. Lang
通讯作者:
C. Gattringer;C. Lang
影响因子:
8.6
作者:
Amato, Alessandro;Aarts, Gert;Skullerud, Jon-Ivar
通讯作者:
Skullerud, Jon-Ivar