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Journal Articles

Hexaquark picture for $$d$$*(2380)

Kim, H.*; Kim, K. S.*; Oka, Makoto

Physical Review D, 102(7), p.074023_1 - 074023_10, 2020/10

 Times Cited Count:0

no abstracts in English

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

 Times Cited Count:0 Percentile:100(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

Spectrum of singly heavy baryons from a chiral effective theory of diquarks

Kim, Y.*; Hiyama, Emiko*; Oka, Makoto; Suzuki, Kei

Physical Review D, 102(1), p.014004_1 - 014004_9, 2020/07

 Times Cited Count:3 Percentile:12.55(Astronomy & Astrophysics)

Applying the chiral effective theory of diquarks, we analyze the spectrum and structure of singly heavy baryons. We introduce the phenomenological quark-model potentials for the confinement. We predict the charmed and bottom baryon spectrum showing the inverse mass hierarchy.

Journal Articles

Search for $$B^0$$ decays to invisible final states ($$+gamma$$) at Belle

Ku, Y.*; Tanida, Kiyoshi; Belle Collaboration*; 153 of others*

Physical Review D, 102(1), p.012003_1 - 012003_9, 2020/07

 Times Cited Count:0 Percentile:100(Astronomy & Astrophysics)

Journal Articles

Dalitz analysis of $$D^{0}to K^{-}pi^{+}eta$$ decays at Belle

Chen, Y. Q.*; Tanida, Kiyoshi; Belle Collaboration*; 181 of others*

Physical Review D, 102(1), p.012002_1 - 012002_12, 2020/07

 Times Cited Count:0 Percentile:100(Astronomy & Astrophysics)

Journal Articles

Two-parameter model for optimizing target beam distribution with an octupole magnet

Meigo, Shinichiro; Oi, Motoki; Fujimori, Hiroshi*

Physical Review Accelerators and Beams (Internet), 23(6), p.062802_1 - 062802_24, 2020/06

 Times Cited Count:0 Percentile:100(Physics, Nuclear)

As hadron accelerators for such as the ADS and spallation neutron source achieve increasing beam power, damage to targets is becoming increasingly severe. To mitigate this damage, nonlinear beam optics based on octupole magnets is attractive. Nonlinear optics can decrease the beam-focusing hazard due to failure of the rastering magnet. As a side effect of nonlinear optics, the beam size is known to expand drastically compared with linear optics. Nonlinear effects have been studied via a simplified filament model that ignores beam-divergence spread at the octupole magnet. In this study, a new generalized model is proposed for application to an octupole magnet, regardless of the filament-model approximation. It is found that the transverse distribution obtained by beam tracking can be specified by the introduction of only two parameters, namely the normalized octupole strength of $$K^{*}_8$$ and the $$cot phi$$ of the phase advance. To achieve the two antagonistic requirements of reduction of the beam-peak density and minimization of the beam loss, the transverse distribution is surveyed for a large range of beam position. It is found that a bell-shaped distribution with $$K^{*}_8 sim$$ 1 and $$cot phi sim$$ 3 can satisfy requirements. This result is applied to beam transport in the spallation neutron source at J-PARC. The calculation result given by the present model shows good agreement with the experimental data, and the peak current density is reduced by 50% compared with the linear-optics case.

Journal Articles

$$D$$ meson mass and heavy quark potential at finite temperature

Gubler, P.; Song, T.*; Lee, S. H.*

Physical Review D, 101(11), p.114029_1 - 114029_10, 2020/06

 Times Cited Count:0 Percentile:100(Astronomy & Astrophysics)

Journal Articles

Roper-like resonances with various flavor contents and their two-pion emission decays

Arifi, A. J.*; Nagahiro, Hideko*; Hosaka, Atsushi; Tanida, Kiyoshi

Physical Review D, 101(11), p.111502_1 - 111502_5, 2020/06

 Times Cited Count:1 Percentile:40.35(Astronomy & Astrophysics)

Journal Articles

Photoneutron detection in lightning by gadolinium orthosilicate scintillators

Wada, Yuki*; Nakazawa, Kazuhiro*; Enoto, Teruaki*; Furuta, Yoshihiro; Yuasa, Takayuki*; Makishima, Kazuo*; Tsuchiya, Harufumi

Physical Review D, 101(10), p.102007_1 - 102007_6, 2020/05

 Times Cited Count:0 Percentile:100(Astronomy & Astrophysics)

Journal Articles

Update of inclusive cross sections of single and pairs of identified light charged hadrons

Seidl, R.*; Tanida, Kiyoshi; Belle Collaboration*; 136 of others*

Physical Review D, 101(9), p.092004_1 - 092004_13, 2020/05

 Times Cited Count:0 Percentile:100(Astronomy & Astrophysics)

Journal Articles

Evidence for a vector charmoniumlike state in $$e^+e^- to D^+_sD^*_{s2}(2573)^-+c.c.$$

Jia, S.*; Tanida, Kiyoshi; Belle Collaboration*; 175 of others*

Physical Review D, 101(9), p.091101_1 - 091101_8, 2020/05

 Times Cited Count:3 Percentile:21.49(Astronomy & Astrophysics)

Journal Articles

Three-body decay of $$Lambda_c^{*} (2765)$$ and determination of its spin-parity

Arifi, A. J.*; Nagahiro, Hideko*; Hosaka, Atsushi; Tanida, Kiyoshi

Physical Review D, 101(9), p.094023_1 - 094023_17, 2020/05

 Times Cited Count:1 Percentile:40.35(Astronomy & Astrophysics)

Journal Articles

Chiral effective theory of diquarks and the $$U_A(1)$$ anomaly

Harada, Masayasu*; Liu, Y.-R.*; Oka, Makoto; Suzuki, Kei

Physical Review D, 101(5), p.054038_1 - 054038_11, 2020/03

 Times Cited Count:4 Percentile:7.67(Astronomy & Astrophysics)

Using a chiral effective theory of diquarks, we analyze the spectrum and structure of diquark and heavy baryons consisting of diquarks. $$U_A(1)$$ anomaly is considered in the chiral Lagrangian and its effects are studied.

Journal Articles

$$J/psi$$ and $$psi(2S)$$ production at forward rapidity in $$p$$+$$p$$ collisions at $$sqrt{s}=510$$ GeV

Acharya, U. A.*; Hasegawa, Shoichi; Imai, Kenichi*; Nagamiya, Shoji*; Sako, Hiroyuki; Sato, Susumu; Tanida, Kiyoshi; PHENIX Collaboration*; 353 of others*

Physical Review D, 101(5), p.052006_1 - 052006_13, 2020/03

 Times Cited Count:0 Percentile:100(Astronomy & Astrophysics)

Journal Articles

Study of $$B to p {bar p} pi pi$$

Chu, K.*; Tanida, Kiyoshi; Belle Collaboration*; 176 of others*

Physical Review D, 101(5), p.052012_1 - 052012_8, 2020/03

 Times Cited Count:0 Percentile:100(Astronomy & Astrophysics)

Journal Articles

Development of a radio frequency quadrupole linac implemented with the equipartitioning beam dynamics scheme

Kondo, Yasuhiro; Morishita, Takatoshi; Jameson, R. A.*

Physical Review Accelerators and Beams (Internet), 22(12), p.120101_1 - 120101_8, 2019/12

 Times Cited Count:0 Percentile:100(Physics, Nuclear)

Radio frequency quadrupole linac (RFQ) is the key component which realized modern high-current proton linacs, however, many RFQs are designed based on very conventional design schemes. We developed 3-MeV 50-mA H$$^-$$ (negative hydrogen) RFQ based on a beam space-charge physics concept. The equipartitioning scheme, which is widely used in the high intensity linac design, is implemented into the RFQ design. Design performances of 99.1% transmission, 0.24$$pi$$ mm mrad transverse normalized rms emittance, and 0.11$$pi$$ MeV deg for longitudinal direction are achieved with a vane length of 3 m and the final energy of 3 MeV. An RFQ employing this design concept was fabricated, and the design performance was confirmed by beam commissioning. In this paper, the design and result of the beam commissioning of this fully equipartitioned RFQ are described.

Journal Articles

Measurements of the branching fractions $${cal B}(B^{-} to bar{Lambda}_{c}^{-} Xi_{c}^{'0})$$, $${cal B}(B^{-} to bar{Lambda}_{c}^{-} Xi_{c}(2645)^{0})$$ and $${cal B}(B^{-} to bar{Lambda}_{c}^{-} Xi_{c}(2790)^{0})$$

Li, Y.*; Tanida, Kiyoshi; Belle Collaboration*; 175 of others*

Physical Review D, 100(11), p.112010_1 - 112010_8, 2019/12

 Times Cited Count:0 Percentile:100(Astronomy & Astrophysics)

Journal Articles

Observation of a vector charmoniumlike state in $$e^+e^- to D^+_sD_{s1}(2536)^-+c.c.$$

Jia, S.*; Tanida, Kiyoshi; Belle Collaboration*; 172 of others*

Physical Review D, 100(11), p.111103_1 - 111103_8, 2019/12

 Times Cited Count:11 Percentile:11.7(Astronomy & Astrophysics)

Journal Articles

Azimuthal asymmetries of back-to-back $$pi^pm-(pi^0,eta,pi^pm)$$ pairs in $$e^+e^-$$ annihilation

Li, H.*; Tanida, Kiyoshi; Belle Collaboration*; 131 of others*

Physical Review D, 100(9), p.092008_1 - 092008_26, 2019/11

 Times Cited Count:2 Percentile:59.64(Astronomy & Astrophysics)

Journal Articles

Observation of $$tau^- rightarrow pi^- nu_{tau} e^+ e^- $$ and search for $$tau^- rightarrow pi^- nu_{tau} mu^+ mu^-$$

Jin, Y.*; Tanida, Kiyoshi; Belle Collaboration*; 198 of others*

Physical Review D, 100(7), p.071101_1 - 071101_9, 2019/10

 Times Cited Count:0 Percentile:100(Astronomy & Astrophysics)

169 (Records 1-20 displayed on this page)