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Studies of $\phi$ meson mass modification in cold nuclear matter in p+A collisions at J-PARC

Year: 2026
Type: conference-paper
Abstract: The J-PARC E88 experiment is proposed to study the in-medium modification of the ๐œ™ meson mass using high-statistics ๐พ+๐พโˆ’ decay measurements in proton-nucleus collisions. We study ๐œ™ mass dependence on momentum to evaluate โŸจ๐‘ ๐‘ โŸฉ condensate in the nucleon with the mass shift extrapolated to zero momentum. We also aim to study the slopes of the mass shift as a function of the momentum-squared for longitudinally and transversely polarized $\phi$s, which are closely related to higher-order quark and gluon condensates than $\langle \overline{q}q \rangle$. For Kaon identification, we will introduce detectors: Multi-gap Resistive Plate Chambers, Start Counters, and Aerogel Cherenkov counters at the forward angles in the E16 Spectrometer. In April-June 2024, we tested these detectors to evaluate the particle identification performance.
DOI: 10.22323/1.500.0260
Authors: Hiroyuki Sako, Kazuya Aoki, Wen-Chen Chang, Ming-Lee Chu, Tatsuya Chujo, Shinichi Esumi, Masaya Ichikawa, Motoi Inaba, Yasuo Miake, Yuhei Morino, Megumi Naruki, Toshihiro Nonaka, Kyoichiro OZAWA, Takao Sakaguchi, Susumu Sato, Tomonori Takahashi๐‘–, Satoshi Yokkaichi
Language: English
Open Access status: gold
OpenAlex ID: W7124737998
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