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 K 1 meson is possible to be probed by using kaon beams at J-PARC. Such measurement together with that of K ⁎ will shed light on how chiral symmetry is partially restored in nuclear matter.
|Number of pages||10|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|Publication status||Published - 2019 May 10|
Bibliographical noteFunding Information:
This work was supported by the Korea National Research Foundation (NRF) under Grant No. 2016R1D1A1B03930089 . T.H. was partially supported by RIKEN iTHEMS program and JSPS Grant-in-Aid for Scientific Research (S), No. 18H05236 . The work of T.H. was performed at the Aspen Center for Physics, which is supported by National Science Foundation grant PHY-1607611 .
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics