Published August 2014 | Version v1
Journal article Metadata-only

Spin-2 NΩ dibaryon from lattice QCD

Creators

  • 1. Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan)
  • 2. Department of Physics, Faculty of Sciences, University of Birjand, Birjand 97175-615 (Iran, Islamic Republic of)
  • 3. Center for Computational Sciences, University of Tsukuba, Ibaraki 305-8571 (Japan)
  • 4. Theoretical Research Division, Nishina Center, RIKEN, Saitama 351-0198 (Japan)
  • 5. Kavli IPMU (WPI), The University of Tokyo, Chiba 277-8583 (Japan)
  • 6. Nihon University, College of Bioresource Sciences, Kanagawa 252-0880 (Japan)

Description

We investigate properties of the N(nucleon)–Ω(Omega) interaction in lattice QCD to seek for possible dibaryon states in the strangeness −3 channel. We calculate the NΩ potential through the equal-time Nambu–Bethe–Salpeter wave function in 2+1 flavor lattice QCD with the renormalization group improved Iwasaki gauge action and the nonperturbatively O(a) improved Wilson quark action at the lattice spacing a≃0.12 fm on a (1.9 fm)3× 3.8 fm lattice. The ud and s quark masses in our study correspond to mπ=875(1) MeV and mK=916(1) MeV. At these parameter values, the central potential in the S-wave with the spin 2 shows attractions at all distances. By solving the Schrödinger equation with this potential, we find one bound state whose binding energy is 18.9(5.0)(+12.1−1.8) MeV, where the first error is the statistical one, while the second represents the systematic error

Availability note (English)

Available from http://dx.doi.org/10.1016/j.nuclphysa.2014.05.014

Additional details

Identifiers

DOI
10.1016/j.nuclphysa.2014.05.014;
arXiv
arXiv:1403.7284v2;
PII
S0375-9474(14)00148-1;

Publishing Information

Journal Title
Nuclear Physics. A
Journal Volume
928
Journal Page Range
p. 89-98
ISSN
0375-9474
CODEN
NUPABL

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
46090916
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Descriptors DEI
BINDING ENERGY; BOUND STATE; CENTRAL POTENTIAL; FLAVOR MODEL; LAMBDA-N-2130 DIBARYONS; LATTICE FIELD THEORY; MEV RANGE; QUANTUM CHROMODYNAMICS; RENORMALIZATION; REST MASS; S QUARKS; S WAVES; SCHROEDINGER EQUATION; SPIN; STRANGENESS; U QUARKS; WAVE FUNCTIONS
Descriptors DEC
ANGULAR MOMENTUM; BARYONS; COMPOSITE MODELS; CONSTRUCTIVE FIELD THEORY; DIBARYONS; DIFFERENTIAL EQUATIONS; ELEMENTARY PARTICLES; ENERGY; ENERGY RANGE; EQUATIONS; FERMIONS; FIELD THEORIES; FUNCTIONS; HADRONS; HYPERONS; MASS; MATHEMATICAL MODELS; PARTIAL DIFFERENTIAL EQUATIONS; PARTIAL WAVES; PARTICLE MODELS; PARTICLE PROPERTIES; POTENTIALS; QUANTUM FIELD THEORY; QUARK MODEL; QUARKS; STRANGE PARTICLES; WAVE EQUATIONS

Optional Information

Copyright
Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.