Baryon interactions from lattice QCD with physical masses - Strangeness S = -1 sector

Hidekatsu Nemura, Sinya Aoki, Takumi Doi, Shinya Gongyo, Tetsuo Hatsuda, Yoichi Ikeda, Takashi Inoue, Takumi Iritani, Noriyoshi Ishii, Takaya Miyamoto, Kenji Sasaki

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Abstract

We present our recent results of baryon interactions with strangeness S = -1 based on Nambu-Bethe-Salpeter (NBS) correlation functions calculated fromlattice QCD with almost physical quark masses corresponding to (mk,mk) ≈ (146, 525) MeV and large volume (La)4 ≈ (96a)4 ≈ (8.1 fm)4. In order to perform a comprehensive study of baryon interactions, a large number of NBS correlation functions from NN to ΞΞ are calculated simultaneously by using large scale computer resources. In this contribution, we focus on the strangeness S = -1 channels of the hyperon interactions by means of HAL QCD method. Four sets of three potentials (the 3S1 - 3 D1 central, 3S1 - 3 D1 tensor, and the 1S0 central potentials) are presented for the ∑ N - ∑ N (the isospin I = 3/2) diagonal, the Λ N - Λ N diagonal, the Λ N → ∑ N transition, and the ∑ N - ∑ N (I = 1/2) diagonal interactions. Scattering phase shifts for ∑ N (I = 3/2) system are presented.

Original languageEnglish
Article number05030
JournalEPJ Web of Conferences
Volume175
DOIs
Publication statusPublished - Mar 26 2018
Externally publishedYes
Event35th International Symposium on Lattice Field Theory, Lattice 2017 - Granada, Spain
Duration: Jun 18 2017Jun 24 2017

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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