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QCD sum rule for open strange meson K 1 ± in nuclear matter
Song, Taesoo,Hatsuda, Tetsuo,Lee, Su Houng North-Holland Pub. Co 2019 Physics letters. Section B Vol.792 No.-
<P><B>Abstract</B></P> <P>The properties of open strange meson K 1 ± in nuclear matter are estimated in the QCD sum rule approach. We obtain a relation between the in-medium mass and width of K 1 − ( K 1 + ) in nuclear matter, and show that the upper limit of the mass shift is as large as −249 (−35) MeV. The spectral modification of the <SUB> K 1 </SUB> meson is possible to be probed by using kaon beams at J-PARC. Such measurement together with that of <SUP> K ⁎ </SUP> will shed light on how chiral symmetry is partially restored in nuclear matter.</P>