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Journal Articles

Prediction of Double-heavy Tetraquarks Bound States in Quark Model

Meng, Q.*; Hiyama, Emiko; Hosaka, Atsushi; Oka, Makoto; Gubler, P.; Can, K. U.*; Takahashi, Toru*; Zong, H. S.*

Few-Body Systems, 62(4), p.79_1 - 79_5, 2021/12

 Times Cited Count:0 Percentile:0(Physics, Multidisciplinary)

Journal Articles

Stable double-heavy tetraquarks; Spectrum and structure

Meng, Q.*; Hiyama, Emiko*; Hosaka, Atsushi; Oka, Makoto; Gubler, P.; Can, K. U.*; Takahashi, Toru*; Zong, H. S.*

Physics Letters B, 814, p.136095_1 - 136095_6, 2021/03

 Times Cited Count:35 Percentile:98.84(Astronomy & Astrophysics)

Journal Articles

Charmed baryon spectrum from lattice QCD near the physical point

Bahtiyar, H.*; Can, K. U.*; Erkol, G.*; Gubler, P.; Oka, Makoto; Takahashi, Toru*

Physical Review D, 102(5), p.054513_1 - 054513_18, 2020/09

AA2020-0041.pdf:2.4MB

 Times Cited Count:30 Percentile:88.74(Astronomy & Astrophysics)

Spectrum of the ground state and excited states of charmed baryons was evaluated in the lattice QCD, the first principle of hadronic interaction. We deliver the spectrum of the positive and negative parity baryons with one, two or three charmed quarks. A variational approach was employed by the use of multiple operators with different Dirac matrix configurations and the smearings.

Journal Articles

Radiative transitions of singly and doubly charmed baryons in lattice QCD

Bahtiyar, H.*; Can, K. U.*; Erkol, G.*; Oka, Makoto; Takahashi, Toru*

JPS Conference Proceedings (Internet), 26, p.022027_1 - 022027_4, 2019/11

Transition amplitude of spin 3/2 single and double-charm baryon to spin 1/2 ground state was evaluated in the lattice QCD, the first principle.

Journal Articles

Spectrum of the charmed baryons in 2+1-flavor lattice QCD

Can, K. U.*; Bahtiyar, H.*; Erkol, G.*; Gubler, P.; Oka, Makoto; Takahashi, Toru*

JPS Conference Proceedings (Internet), 26, p.022028_1 - 022028_5, 2019/11

Spectrum of the ground state and excited states of charmed baryons was evaluated in the lattice QCD, the first principle.

Journal Articles

Compact $$ssscbar c$$ pentaquark states predicted by a quark model

Meng, Q.*; Hiyama, Emiko*; Can, K. U.*; Gubler, P.; Oka, Makoto; Hosaka, Atsushi; Zong, H.*

Physics Letters B, 798, p.135028_1 - 135028_8, 2019/11

 Times Cited Count:0

Journal Articles

Radiative transitions of doubly charmed baryons in lattice QCD

Bartiyar, H.*; Can, K. U.*; Erkol, G.*; Oka, Makoto; Takahashi, Toru*

Physical Review D, 98(11), p.114505_1 - 114505_14, 2018/12

 Times Cited Count:22 Percentile:73.39(Astronomy & Astrophysics)

Transition amplitude of spin 3/2 double-charm baryon to spin 1/2 ground state was evaluated in the lattice QCD, the first principle.

Journal Articles

$$Xi_c gamma rightarrowXi^prime_c$$ transition in lattice QCD

Bahtlyar, H.*; Can, K. U.*; Erkol, G.*; Oka, Makoto; Takahashi, Toru*

Physics Letters B, 772, p.121 - 126, 2017/09

 Times Cited Count:24 Percentile:87.36(Astronomy & Astrophysics)

We evaluate the electromagnetic $$Xi_c gamma rightarrowXi_c^prime$$ transition on 2+1 flavor lattices corresponding to a pion mass of $$sim 156$$ MeV. We extract the magnetic Sachs and Pauli form factors which give the $$Xi_c$$-$$Xi_c^prime$$ transition magnetic moment and the decay rates of $$Xi_c^prime$$ baryons. We did not find a signal for the magnetic form factor of the neutral transition $$Xi_c^0 gamma rightarrowXi_c^{prime 0}$$, which is suppressed by the U-spin flavor symmetry. As a byproduct, we extract the magnetic form factors and the magnetic moments of $$Xi_c$$ and $$Xi_c^prime$$ baryons, which give an insight to the dynamics of $$u/d$$, $$s$$ and $$c$$ quarks having masses at different scales.

Journal Articles

$$Lambda_c Sigma_c pi$$ coupling and $$Sigma_c to Lambda_c pi$$ decay in lattice QCD

Can, K. U.*; Erkol, G.*; Oka, Makoto; Takahashi, Toru*

Physics Letters B, 768, p.309 - 316, 2017/05

 Times Cited Count:8 Percentile:55.37(Astronomy & Astrophysics)

Journal Articles

Look inside charmed-strange baryons from lattice QCD

Can, K. U.*; Erkol, G.*; Oka, Makoto; Takahashi, Toru*

Physical Review D, 92(11), p.114515_1 - 114515_14, 2015/12

 Times Cited Count:40 Percentile:82.95(Astronomy & Astrophysics)

The electromagnetic form factors of the spin $$3/2 Omega$$ baryons, namely $$Omega, Omega^*_c, Omega^*_{cc}$$ and $$Omega_{ccc}$$, are calculated in full QCD on 323$$times$$64 PACS-CS lattices with a pion mass of 156(9) MeV. The electric charge radii and magnetic moments from the E0 and M1 multipole form factors are extracted. Results for the electric quadrupole form factors, E2, are also given. Quark sector contributions are computed individually for each observable and then combined to obtain the baryon properties. We find that the charm quark contributions are systematically smaller than the strange-quark contributions in the case of the charge radii and magnetic moments. E2 moments of the $$Omega^*_{cc}$$ and $$Omega_{ccc}$$ provide a statistically significant data to conclude that their electric charge distributions are deformed to an oblate shape. Properties of the spin $$1/2 Omega_c$$ and $$Omega_{cc}$$ baryons are also computed and a thorough comparison is given. This complete study gives valuable hints about the heavy-quark dynamics in charmed hadrons.

Journal Articles

Spatio-temporal evolution of the L$$rightarrow$$H and H$$rightarrow$$L transitions

Miki, Kazuhiro; Diamond, P. H.*; Fedorczak, N.*; G$"u$rcan, $"O$. D.*; Malkov, M.*; Lee, C.*; Kosuga, Yusuke*; Tynan, G. R.*; Xu, G. S.*; Estrada, T.*; et al.

Nuclear Fusion, 53(7), p.073044_1 - 073044_10, 2013/07

 Times Cited Count:24 Percentile:72.36(Physics, Fluids & Plasmas)

Understanding the L$$rightarrow$$H and H$$rightarrow$$L transitions is crucial to successful ITER operation. In this paper we present novel theoretical and modelling study results on the spatio-temporal dynamics of the transition. We place a special emphasis on the role of zonal flows and the micro$$rightarrow$$macro connection between dynamics and the power threshold dependences. The model studied evolves five coupled fields in time and one space dimension, in simplified geometry. The content of this paper is (a) the model fundamentals and the space-time evolution during the L$$rightarrow$$I$$rightarrow$$H transition, (b) the physics origin of the well-known $$nabla$$ B-drift asymmetry in power threshold, (c) the role of heat avalanches in the intrinsic variability of the L$$rightarrow$$H transition, (d) the dynamics of the H$$rightarrow$$L back transition and the physics of hysteresis.

Journal Articles

Hybrid monitoring system for high temperature gas cooling reactor

Nabeshima, Kunihiko; Tuerkcan, E.*; Suzudo, Tomoaki; Nakagawa, Shigeaki; Inoue, K.*; Oono, Tomio*; *; Suzuki, Katsuo

Proc. of Human-Computer Interaction International'99, 2, p.1187 - 1191, 1999/00

no abstracts in English

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