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A novel probe of chiral restoration in nuclear medium
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abstract
We propose measuring the mass shift and width broadening of the $f_1(1285)$ meson together with those of the $\omega$ from a nuclear target as a means to experimentally probe the partial restoration of chiral symmetry inside the nuclear matter. The relation between the order parameter of chiral symmetry and the difference in the correlation functions of the $f_1(1285)$ current and the $\omega$ current is discussed in the limit where the disconnected diagrams are neglected. A QCD sum rule analysis of the $f_1(1285)$ meson mass leads to about 100 MeV attraction in nuclear matter, which can be probed in future experiments.
Forward citations
Cited by 2 Pith papers
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Fate of $\Sigma_c$, $\Xi_c'$ and $\Omega_c$ baryons at high temperature with chiral restoration
At high temperature, parity partners of singly charmed baryons become degenerate, Sigma_c and Omega_c masses converge, and the Sigma_c to Lambda_c pi width closes.
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Comprehensive study of mass modifications of light mesons in nuclear matter in the three-flavor extended Linear Sigma Model
Combining the extended Linear Sigma Model with a parity doublet nucleon model, this paper predicts that most light meson masses drop in nuclear matter and favors a chiral invariant mass M0 around 0.8 GeV.
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