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Title: | Most Strange Dibaryon from Lattice QCD |
Authors: | Gongyo, Shinya Sasaki, Kenji Aoki, Sinya Doi, Takumi Hatsuda, Tetsuo Ikeda, Yoichi Inoue, Takashi Iritani, Takumi Ishii, Noriyoshi Miyamoto, Takaya Nemura, Hidekatsu |
Author's alias: | 権業, 慎也 佐々木, 健志 青木, 愼也 土井, 琢身 初田, 哲男 池田, 陽一 井上, 貴史 入谷, 匠 石井, 理修 宮本, 貴也 根村, 英克 |
Keywords: | Particles & Fields Nuclear Physics |
Issue Date: | 25-May-2018 |
Publisher: | American Physical Society (APS) |
Journal title: | Physical Review Letters |
Volume: | 120 |
Issue: | 21 |
Thesis number: | 212001 |
Abstract: | The ΩΩ system in the 1S0 channel (the most strange dibaryon) is studied on the basis of the (2+1)-flavor lattice QCD simulations with a large volume (8.1 fm)3 and nearly physical pion mass mπ≃146 MeV at a lattice spacing of a≃0.0846 fm. We show that lattice QCD data analysis by the HAL QCD method leads to the scattering length a0=4.6(6)(+1.2−0.5) fm, the effective range reff=1.27(3)(+0.06−0.03) fm, and the binding energy BΩΩ=1.6(6)(+0.7−0.6) MeV. These results indicate that the ΩΩ system has an overall attraction and is located near the unitary regime. Such a system can be best searched experimentally by the pair-momentum correlation in relativistic heavy-ion collisions. |
Description: | 新粒子「ダイオメガ」 --スパコン「京」と数理で予言するクォーク6個の新世界--. 京都大学プレスリリース. 2018-05-29. |
Rights: | Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3. |
URI: | http://hdl.handle.net/2433/231256 |
DOI(Published Version): | 10.1103/PhysRevLett.120.212001 |
PubMed ID: | 29883161 |
Related Link: | https://www.kyoto-u.ac.jp/ja/research-news/2018-05-29 |
Appears in Collections: | Journal Articles |
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