Sasaki: HOME PAGE

HADRON GROUP
THEORETICAL NUCLEAR PHYSICS LABORATORY

OOM

1048,

CIENCE

OMPLEX

(H-03)

DEPARTMENT OF PHYSICS, TOHOKU UNIVERSITY

6-3,

RAMAKI

ZA -

OBA,

OBA-KU,

ENDAI

980-8578,

JAPAN

EL:

+81-22-795-6457

AX:

+81-22-795-6460

RESEARCH INTERESTS

Confinement as the non-perturbative vaccum of QCD
Topological aspects of QCD (Instanton, QCD-monopole,,,,,,)
Chiral symmetry on the lattice
Hadron structure from the viewpoint of chiral symmetry in lattice QCD
* Nucleon structure:
"Nucleon Axial Charge from Quenched Lattice QCD with Domain Wall Fermions"
(with K. Orginos, S. Ohta and T. Blum) hep-lat.0306007, Phys. Rev. D68 (2003) 054509.
"Nucleon Form Factors from Quenched Lattice QCD with Domain Wall Fermions"
(with T. Yamazaki) arXiv:0709.3150, Phys. Rev. D78 (2008) 014510.
"Nucleon Axial Charge in 2+1 Flavor Dynamical Lattice QCD with Domain Wall Fermions"
(with T. Yamazaki, Y. Aoki, T. Blum, H.-W. Lin, M.-F. Lin, S. Ohta, R. Tweedie, J. Zanotti as RBC+UKQCD Collaborations)
arXiv:0801.4016, Phys. Rev. Lett. 100 (2008) 171602.
"Nucleon form factors with 2+1 flavor dynamical domain-wall fermions"
(with T. Yamazaki, Y. Aoki, T. Blum, H.-W. Lin, S. Ohta, R. Tweedie, J. Zanotti as RBC+UKQCD Collaborations)
arXiv:0904.2039, Phys. Rev. D79 (2009) 114505.
"Nucleon isovector structure functions in 2+1 flavor QCD with domain-wall fermions"
(with Y. Aoki, T. Blum, H.-W. Lin, S. Ohta, R. Tweedie, T. Yamazaki, J. Zanotti as RBC+UKQCD Collaborations)
arXiv:1003.3387, Phys. Rev. D82 (2010) 014501.
* Semi-leptonic decays and SU(3) breaking effect:
"Vector Form Factor in K_l3 Semileptonic Decay with Two Flavors of Dynamical Domain-Wall Quarks"
(with T. Kaneko, C. Dawson, T. Izubuchi, A. Soni) hep-lat/0607162, Phys. Rev. D74 (2006) 114502.
"K_l3 Semileptonic Form Factor from 2+1 Flavour Lattice QCD"
(with P. Boyle, A. Juettner, R. Kenway, C. Sachrajda, A. Soni, R. Tweedie, J. Zanotti as RBC+UKQCD Collaborations)
arXiv:0710.5136, Phys. Rev. Lett. 100 (2008) 141601.
"Lattice Study of Flavor SU(3) Breaking in Hyperon Beta Decay"
(with T. Yamazaki) arXiv:0811.1406, Phys. Rev. D79 (2009) 074508.
"Hyperon Vector Form Factor from 2+1 Flavor Lattice QCD"
arXiv:1209.6115, Phys. Rev. D86 (2012) 114502.
"Continuum limit of hyperon vector coupling f₁(0) from 2+1 flavor domain wall QCD"
arXiv:1708.04008 Phys. Rev. D96 (2017) 074509.

Baryon excited states
"Excited Baryon Spectroscopy from Lattice QCD: Finite Size Effect and Hyperfine Mass Splitting"
(with K. Sasaki) hep-lat.0503026, Phys. Rev. D72 (2005) 034502.
"Spectra Analysis of Excited Nucleons in Lattice QCD with Maximum Entropy Method"
(with K. Sasaki and T. Hatsuda) hep-lat.0504020, Phys. Lett. B623 (2005) 208-217.

Exotic hadron states, especially pentaquark
"Lattice Study of Exotic S=+1 Baryon" hep-lat/0310014, Phys. Rev. Lett. 93 (2004) 152001.
Transparencies (Plenary talk at Lattice 2004, June 21-26, FNAL) in pdf-format
"Pentaquarks: Status and Perspectives for Lattice Calculations" hep-lat/0410016 for Proc. of Lattice 2004.
And also tribaryon.
"Strange Tribaryons as Nona-quark States" (with Y. Maezawa and T. Hatsuda)
hep-ph/0412025, Prog. Theor. Phys. 114 (2005) 317-327.

Bound state and unstable particle on the lattice
"Signatures of S-wave Bound-state Formation in Finite Volume"
(with T. Yamazaki) hep-lat/0610081, Phys. Rev. D74 (2006) 114507.
"Lüscher's Finite Size Method with Twisted Boundary Conditions: An Application to J/psi-phi System to Search for Narrow Resonance"
(with S. Ozaki) arXiv:1211.5512 [hep-lat]. Phys. Rev. D87 (2013) 014506.
"Lattice study of scattering phase shifts for DD^∗ and BB^∗ systems using twisted boundary conditions: search for bound state formation"
(with M. Nagatsuka) arXiv:2507.20712. Submitted to Phys. Rev. D NEW

Hadron-Hadron interaction
"First Lattice Study of Low-energy Charmonium-Hadron Interaction"
(with K. Yokokawa, T. Hatsuda, A. Hayashigaki) hep-lat/0605009, Phys. Rev. D74 (2006) 034504.
"Charmonium-Nucleon Potential from Lattice QCD"
(with T. Kawanai) arXiv:1009.3332, Phys. Rev. D82 (2010) 091501(R).

Heavy quark system
"Interquark Potential with Finite Quark Mass from Lattice QCD"
(with T. Kawanai) arXiv:1102.3246 Phys. Rev. Lett. 107 (2011) 091601.
"Charmonium Potential from Full Lattice QCD"
(with T. Kawanai) arXiv:1110.0888 Phys. Rev. D85 (2012) 091503(R).
"Complex Heavy-Quark Potential at Finite Temperature from Lattice QCD"
(with A. Rothkopf and T. Hatsuda) arXiv:1108.1579 Phys. Rev. Lett. 108 (2012) 162001.
"Heavy quarkonium potential from Bethe-Salpeter wave function on the lattice"
(with T. Kawanai) arXiv:1311.1253 Phys. Rev. D89 (2014) 054507.
"Potential description of charmonium and charmed-strange mesons from lattice QCD"
(with T. Kawanai) arXiv:1508.02178 Phys. Rev. D92 (2015) 094503.
"Bethe-Salpeter wave functions of η_c(2S) and ψ(2S) states from full lattice QCD"
(with K. Nochi and T. Kawanai) arXiv:1608.02340, Phys. Rev. D94 (2016) 114514.

Yang-Mills gradient flow
"Numerical study of tree-level improved lattice gradient flows in pure Yang-Millls theory"
(with N. Kamata) arXiv:1609.07115, Phys. Rev. D95 (2017) 054501.
"On the equivalence between the Wilson flow and sout-link smearing"
(with M. Nagatsuka and K. Sakai) arXiv:2303.09938, Phys. Rev. D108 (2023) 094506.

Structure of the nucleon from lattice QCD at the physical point
"Nucleon form factors on a large volume lattice near the physical point in 2+1 flavor QCD"
(with K.-I. Ishikawa, Y. Kuramashi, N. Tsukamoto, A. Ukawa and T. Yamazaki for PACS Collaboration)
arXiv:1807.03974, Phys. Rev. D98 (2018) 074510.
"Nucleon form factors and root-mean-square radii on a (10.8 fm)⁴ lattice at the physical point"
(with E. Shintani, K.-I. Ishikawa, Y. Kuramashi and T. Yamazaki for PACS Collaboration)
arXiv:1811.07292, Phys. Rev. D99 (2019) 014510.
"Calculation of the derivative of nucleon form factors in N_f=2+1 lattice QCD at M_π=138 MeV on a (5.5 fm)³ volume"
(with K.-I. Ishikawa, Y. Kuramashi, E. Shintani and T. Yamazaki for PACS Collaboration)
arXiv:2107.07085, Phys. Rev. D104 (2021) 074514.
"Nucleon isovector couplings in N_f=2+1 lattice QCD at the physical point"
(with R. Tsuji, N. Tsukamoto, Y. Aoki, K.-I. Ishikawa, Y. Kuramashi, E. Shintani and T. Yamazaki for PACS Collaboration)
arXiv:2207.11914, Phys. Rev. D106 (2022) 094505.
"Nucleon form factors in N_f=2+1 lattice QCD at the physical point : finite lattice spacing effect on the root-mean-square radii"
(with R. Tsuji, Y. Aoki, K.-I. Ishikawa, Y. Kuramashi, K. Sato, E. Shintani, H. Watanabe and T. Yamazaki for PACS Collaboration)
arXiv:2311.10345, Phys. Rev. D109 (2024) 094505.
"Method for high-precision determination of the nucleon axial structure using lattice QCD: Removing πN-state contamination"
(with Y. Aoki, K.-I. Ishikawa, Y. Kuramashi, K. Sato, E. Shintani, R. Tsuji, H. Watanabe and T. Yamazaki for PACS Collaboration)
arXiv:2505.06854, Phys. Rev. D112 (2025) 074510. NEW
"Investigating the axial structure of the nucleon based on large-volume lattice QCD at the physical point"
(with R. Tsuji, Y. Aoki, K.-I. Ishikawa, Y. Kuramashi, K. Sato, E. Shintani, H. Watanabe and T. Yamazaki for PACS Collaboration)
arXiv:2505.10998, Submitted to Phys. Theor. Expt. Phys. NEW

Glueball and gluon structure of hadrons
"Glueball spectroscopy in lattice QCD using gradient flow"
(with K. Sakai) arXiv:2211.15176, Phys. Rev. D107 (2023) 034510.
"Glueball mass spectrum at finite temperature revisited: Constant contribution in glueball correlators in the deconfinement phase"
(with T. Arikawa and K. Sakai) arXiv:2504.09120, Phys. Rev. D112 (2025) 014506 NEW

Tensor renormaliztion group (tensor network)
"Triad representation for the anisotropic tensor renormalization group in four dimensions"
(with Y. Sugimoto) arXiv:2507.21909, Accepted for publication in Phys. Rev. D NEW

PRIOR RESEARCH EXPERIENCE

Research Center for Nuclear Physics, Osaka University.: Graduate Student Research Assistant (October, 1996 - March, 1997)
Yukawa Institute for Theoretical Physics, Kyoto University.: Research Fellow of JSPS (April, 1997 - August, 1998)
RIKEN-BNL Research Center, Brookhaven National Laboratory (New York, USA).: Research Associate (September, 1998 - September, 2000); RBRC Fellow (October, 2004 - September, 2006)
Member of the RBC Collaboration .
Hadron group, Department of Physics, University of Tokyo.: Assistant Professor (October, 2000 - March, 2012)
Hadron group, Department of Physics, Tohoku University.: Associate Professor (April, 2012 - )

RESEARCH INTERESTS

PRIOR RESEARCH EXPERIENCE

INFORMATION (JAPANESE)