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Dr Justus Tobias Tsang

Research outputs

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2026

Continuum foundations of lattice gauge theories A collection of topical lecture notes

Della Morte, M., Di Carlo, M., Erben, F., Juttner, A., Kuberski, S., Rothkopf, A., & Tsang, J. T. (2026). Continuum foundations of lattice gauge theories A collection of topical lecture notes. EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS, 4 pages. doi:10.1140/epjs/s11734-026-02502-9

DOI
10.1140/epjs/s11734-026-02502-9
Journal article

Lattice calculation of short-range contributions to neutrinoless double-beta decay π - → π plus <i> ee</i> at physical pion mass

Boyle, P., Erben, F., Feng, X., Flynn, J. M., Garron, N., Izubuchi, T., . . . Tuo, X. -Y. (2026). Lattice calculation of short-range contributions to neutrinoless double-beta decay π - → π plus <i> ee</i> at physical pion mass. PHYSICAL REVIEW D, 113(5), 14 pages. doi:10.1103/pf3g-kmcr

DOI
10.1103/pf3g-kmcr
Journal article

2025

Kaon physics: a cornerstone for future discoveries

Aebischer, J., Akmete, A. T., Aliberti, R., Altmannshofer, W., Ambrosino, F., Ammendola, R., . . . Zupan, J. (2025). Kaon physics: a cornerstone for future discoveries. JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 52(10), 18 pages. doi:10.1088/1361-6471/ae05b4

DOI
10.1088/1361-6471/ae05b4
Journal article

Comparison of smoothening flows for the topological charge in QCD-like theories

Butti, P., Della Morte, M., Jager, B., Martins, S., & Tsang, J. T. (2025). Comparison of smoothening flows for the topological charge in QCD-like theories. PHYSICAL REVIEW D, 112(1), 11 pages. doi:10.1103/53vh-wm6v

DOI
10.1103/53vh-wm6v
Journal article

Long-Distance Window of the Hadronic Vacuum Polarization for the Muon <i>g</i>-2

Blum, T., Boyle, P. A., Bruno, M., Chakraborty, B., Erben, F., Guelpers, V., . . . Tuo, X. -Y. (2025). Long-Distance Window of the Hadronic Vacuum Polarization for the Muon <i>g</i>-2. PHYSICAL REVIEW LETTERS, 134(20), 8 pages. doi:10.1103/PhysRevLett.134.201901

DOI
10.1103/PhysRevLett.134.201901
Journal article

2024

Charm quark mass using a massive nonperturbative renormalisation scheme

Del Debbio, L., Erben, F., Flynn, J., Mukherjee, R., & Tsang, J. T. (2024). Charm quark mass using a massive nonperturbative renormalisation scheme. In Proceedings of Science Vol. 453.

Conference Paper

Extrapolating semileptonic form factors using Bayesian-inference fits regulated by unitarity and analyticity

Flynn, J. M., Jüttner, A., & Tsang, J. T. (2024). Extrapolating semileptonic form factors using Bayesian-inference fits regulated by unitarity and analyticity. In Proceedings of Science Vol. 453.

Conference Paper

Towards the super Yang-Mills spectrum at large Nc

Della Morte, M., Jäger, B., Martins, S., Tsang, J. T., & Ziegler, F. P. G. (2024). Towards the super Yang-Mills spectrum at large Nc. In Proceedings of Science Vol. 453.

Conference Paper

Absorbing discretization effects with a massive renormalization scheme: The charm-quark mass

Del Debbio, L., Erben, F., Flynn, J. M., Mukherjee, R., & Tsang, J. T. (2024). Absorbing discretization effects with a massive renormalization scheme: The charm-quark mass. PHYSICAL REVIEW D, 110(5), 15 pages. doi:10.1103/PhysRevD.110.054512

DOI
10.1103/PhysRevD.110.054512
Journal article

Kaon mixing beyond the standard model with physical masses

Boyle, P. A., Erben, F., Flynn, J. M., Garron, N., Kettle, J., Mukherjee, R., & Tsang, J. T. (2024). Kaon mixing beyond the standard model with physical masses. PHYSICAL REVIEW D, 110(3), 36 pages. doi:10.1103/PhysRevD.110.034501

DOI
10.1103/PhysRevD.110.034501
Journal article

Workshop summary: Kaons@CERN 2023

Anzivino, G., Cuendis, S. A., Bernard, V., Bijnens, J., Bloch-Devaux, B., Bordone, M., . . . Zupan, J. (2024). Workshop summary: Kaons@CERN 2023. EUROPEAN PHYSICAL JOURNAL C, 84(4), 34 pages. doi:10.1140/epjc/s10052-024-12565-4

DOI
10.1140/epjc/s10052-024-12565-4
Journal article

B-physics from lattice gauge theory

Tsang, J. T., & Della Morte, M. (2024). B-physics from lattice gauge theory. EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS, 233(2), 253-270. doi:10.1140/epjs/s11734-023-01011-3

DOI
10.1140/epjs/s11734-023-01011-3
Journal article

2023

Bayesian inference for form-factor fits regulated by unitarity and analyticity

Flynn, J. M., Juttner, A., & Tsang, J. T. (2023). Bayesian inference for form-factor fits regulated by unitarity and analyticity. JOURNAL OF HIGH ENERGY PHYSICS, (12), 49 pages. doi:10.1007/JHEP12(2023)175

DOI
10.1007/JHEP12(2023)175
Journal article

Update of Euclidean windows of the hadronic vacuum polarization

Blum, T., Boyle, P. A., Bruno, M., Giusti, D., Gülpers, V., Hill, R. C., . . . Tsang, J. T. (2023). Update of Euclidean windows of the hadronic vacuum polarization. Physical Review D, 108(5). doi:10.1103/PhysRevD.108.054507

DOI
10.1103/PhysRevD.108.054507
Journal article

Exclusive semileptonic <i>BS</i>- <i>Key</i> decays on the lattice

Flynn, J. M., Hill, R. C., Juttner, A., Soni, A., Tsang, J. T., & Witzel, O. (2023). Exclusive semileptonic <i>BS</i>- <i>Key</i> decays on the lattice. PHYSICAL REVIEW D, 107(11), 30 pages. doi:10.1103/PhysRevD.107.114512

DOI
10.1103/PhysRevD.107.114512
Journal article

Neutral meson mixing in the B0(s)sector from Lattice QCD

Tsang, J. T. (2023). Neutral meson mixing in the B0(s)sector from Lattice QCD. In Proceedings of Science Vol. 411.

Conference Paper

Summary of Working Group 4: Mixing and mixing-related CP violation in the B system: Δm, Δγ, Φs, Φ1/β, Φ2/α, Φ3/γ

Chobanova, V., Wingate, M., Yusa, Y., Dalseno, J., De Bruyn, K., Egede, U., . . . Silva, L. V. (2023). Summary of Working Group 4: Mixing and mixing-related CP violation in the B system: Δm, Δγ, Φs, Φ1/β, Φ2/α, Φ3/γ. In Proceedings of Science Vol. 411.

Conference Paper

Spectrum of QCD with one flavor: A window for supersymmetric dynamics

Della Morte, M., Jäger, B., Sannino, F., Tsang, J. T., & Ziegler, F. P. G. (2023). Spectrum of QCD with one flavor: A window for supersymmetric dynamics. Physical Review D, 107(11). doi:10.1103/PhysRevD.107.114506

DOI
10.1103/PhysRevD.107.114506
Journal article

Exploring the large-Nc limit with one quark flavour

Della Morte, M., Jäger, B., Martins, S., Sannino, F., Tsang, J. T., & Ziegler, F. P. G. (2023). Exploring the large-Nc limit with one quark flavour. In Proceedings of Science Vol. 430.

Conference Paper

LapH interpolating fields with open boundary conditions

Della Morte, M., Francesconi, O., & Tsang, J. T. (2023). LapH interpolating fields with open boundary conditions. In Proceedings of Science Vol. 430.

Conference Paper

Summary of Working Group 4: Mixing and mixing-related CP violation in the 𝑩 system: 𝚫m, 𝚫𝚪, 𝝓s, 𝝓1/𝜷, 𝝓2/𝜶, 𝝓3/𝜸

Chobanova, V., Wingate, M., Yusa, Y., Dalseno, J. P., Bruyn, K. D., Egede, U., . . . Silva, L. V. (2023). Summary of Working Group 4: Mixing and mixing-related CP violation in the 𝑩 system: 𝚫m, 𝚫𝚪, 𝝓s, 𝝓1/𝜷, 𝝓2/𝜶, 𝝓3/𝜸. In Proceedings of 11th International Workshop on the CKM Unitarity Triangle — PoS(CKM2021) (pp. 017). Sissa Medialab Srl. doi:10.22323/1.411.0017

DOI
10.22323/1.411.0017
Conference Paper

2022

BSM B − B¯ mixing on JLQCD and RBC/UKQCD N f = 2 + 1 DWF ensembles

Boyle, P., Del Debbio, L., Erben, F., Jüttner, A., Kaneko, T., Marshall, M., . . . Witzel, O. (2022). BSM B − B¯ mixing on JLQCD and RBC/UKQCD N f = 2 + 1 DWF ensembles. In Proceedings of Science Vol. 396.

Conference Paper

Form factors for semileptonic B → π, Bs → K and Bs → Ds decays

Flynn, J., Hill, R., Jüttner, A., Soni, A., Tsang, J. T., & Witzel, O. (2022). Form factors for semileptonic B → π, Bs → K and Bs → Ds decays. In Proceedings of Science Vol. 396.

Conference Paper

One Flavour QCD as an analogue computer for SUSY

Della Morte, M., Jäger, B., Sannino, F., Tsang, J. T., & Ziegler, F. P. G. (2022). One Flavour QCD as an analogue computer for SUSY. In Proceedings of Science Vol. 396.

Conference Paper

QED with massive photons for precision physics: zero modes and first result for the hadron spectrum

Clark, M. A., Della Morte, M., Hall, Z., Hörz, B., Nicholson, A., Shindler, A., . . . Yan, H. (2022). QED with massive photons for precision physics: zero modes and first result for the hadron spectrum. In Proceedings of Science Vol. 396.

Conference Paper

Semileptonic D → πℓν, D → Kℓν and Ds → Kℓν decays with 2+1f domain wall fermions

Boyle, P., Del Debbio, L., Erben, F., Flynn, J., Jüttner, A., Marshall, M., . . . Witzel, O. (2022). Semileptonic D → πℓν, D → Kℓν and Ds → Kℓν decays with 2+1f domain wall fermions. In Proceedings of Science Vol. 396.

Conference Paper

Semileptonic $D \rightarrow \pi \ell \nu$, $D \rightarrow K \ell \nu$ and $D_s \rightarrow K \ell \nu$ decays with 2+1f domain wall fermions

Marshall, M., Boyle, P., Del Debbio, L., Erben, F., Flynn, J., Juttner, A., . . . Witzel, O. (2022). Semileptonic $D \rightarrow \pi \ell \nu$, $D \rightarrow K \ell \nu$ and $D_s \rightarrow K \ell \nu$ decays with 2+1f domain wall fermions. In Proceedings of The 38th International Symposium on Lattice Field Theory — PoS(LATTICE2021) (pp. 416). Sissa Medialab Srl. doi:10.22323/1.396.0416

DOI
10.22323/1.396.0416
Conference Paper

2021

Nonperturbative calculations of form factors for exclusive semileptonic B(s) decays

Flynn, J. M., Hill, R. C., Jüttner, A., Soni, A., Tsang, J. T., & Witzel, O. (2021). Nonperturbative calculations of form factors for exclusive semileptonic B(s) decays. In Proceedings of Science Vol. 390.

Conference Paper

2020

Semileptonic $B\to\pi\ell\nu$, $B\to D\ell\nu$, $B_s\to K\ell\nu$, and $B_s\to D_s\ell\nu$ decays

Hill, R., Flynn, J., Juttner, A., Soni, A., Tsang, J. T., & Witzel, O. (2020). Semileptonic $B\to\pi\ell\nu$, $B\to D\ell\nu$, $B_s\to K\ell\nu$, and $B_s\to D_s\ell\nu$ decays. In Proceedings of 37th International Symposium on Lattice Field Theory — PoS(LATTICE2019) (pp. 184). Sissa Medialab Srl. doi:10.22323/1.363.0184

DOI
10.22323/1.363.0184
Conference Paper

2019

Semi-leptonic form factors for $B_s \to K\ell \nu$ and $B_s \to D_s \ell \nu$

Witzel, O., Flynn, J., Hill, R. C., Juttner, A., Soni, A., & Tsang, J. T. (2019). Semi-leptonic form factors for $B_s \to K\ell \nu$ and $B_s \to D_s \ell \nu$. In Proceedings of The 36th Annual International Symposium on Lattice Field Theory — PoS(LATTICE2018) (pp. 290). Sissa Medialab Srl. doi:10.22323/1.334.0290

DOI
10.22323/1.334.0290
Conference Paper

An exploratory study of heavy-light semileptonic form factors using distillation

Boyle, P., Erben, F., Marshall, M., Ó hÓgáin, F., Portelli, A., & Tsang, J. T. (2019). An exploratory study of heavy-light semileptonic form factors using distillation. In Proceedings of Science Vol. 363.

Conference Paper

Semileptonic B → π`ν, B → D`ν, Bs → K`ν, and Bs → Ds`ν decays

Flynn, J., Hill, R., Jüttner, A., Soni, A., Tsang, J. T., & Witzel, O. (2019). Semileptonic B → π`ν, B → D`ν, Bs → K`ν, and Bs → Ds`ν decays. In Proceedings of Science Vol. 363.

Conference Paper

2018

Calculation of the Hadronic Vacuum Polarization Contribution to the Muon Anomalous Magnetic Moment

Blum, T., Boyle, P. A., Gulpers, V., Izubuchi, T., Jin, L., Jung, C., . . . Tsang, J. T. (2018). Calculation of the Hadronic Vacuum Polarization Contribution to the Muon Anomalous Magnetic Moment. PHYSICAL REVIEW LETTERS, 121(2), 6 pages. doi:10.1103/PhysRevLett.121.022003

DOI
10.1103/PhysRevLett.121.022003
Journal article

Heavy domain wall fermions: The RBC and UKQCD charm physics program

Boyle, P. A., Debbio, L. D., Jüttner, A., Khamseh, A., Tsang, J. T., & Witzel, O. (2018). Heavy domain wall fermions: The RBC and UKQCD charm physics program. In EPJ Web of Conferences Vol. 175. doi:10.1051/epjconf/201817513013

DOI
10.1051/epjconf/201817513013
Conference Paper

Beyond the standard model Kaon mixing with physical masses.

Boyle, P., Garron, N., Hudspith, R. J., Jüttner, A., Kettle, J., Khamseh, A., & Tsang, J. T. (2018). Beyond the standard model Kaon mixing with physical masses.. In Proceedings of Science Vol. 334.

Conference Paper

Semi-leptonic form factors for Bs → K`ν and Bs → Ds`ν

Flynn, J. M., Hill, R. C., Jüttner, A., Soni, A., Tsang, J. T., & Witzel, O. (2018). Semi-leptonic form factors for Bs → K`ν and Bs → Ds`ν. In Proceedings of Science Vol. 334.

Conference Paper

2017

The decay constants <i>f<sub>D</sub></i> and <i>f<sub>Ds</sub></i> in the continuum limit of <i>N<sub>f</sub></i>=2+1 domain wall lattice QCD

Boyle, P. A., Del Debbio, L., Juttner, A., Khamseh, A., Sanfilippo, F., & Tsang, J. T. (2017). The decay constants <i>f<sub>D</sub></i> and <i>f<sub>Ds</sub></i> in the continuum limit of <i>N<sub>f</sub></i>=2+1 domain wall lattice QCD. JOURNAL OF HIGH ENERGY PHYSICS, (12), 38 pages. doi:10.1007/JHEP12(2017)008

DOI
10.1007/JHEP12(2017)008
Journal article

2016

BSM Kaon mixing at the Physical Point

Kettle, J., Boyle, P. A., Garron, N., & Tsang, J. T. (2016). BSM Kaon mixing at the Physical Point. In Proceedings of 34th annual International Symposium on Lattice Field Theory — PoS(LATTICE2016) (pp. 397). Sissa Medialab Srl. doi:10.22323/1.256.0397

DOI
10.22323/1.256.0397
Conference Paper

An exploratory study of heavy domain wall fermions on the lattice

Boyle, P., Juettner, A., Marinkovic, M. K., Sanfilippo, F., Spraggs, M., & Tsang, J. T. (2016). An exploratory study of heavy domain wall fermions on the lattice. JOURNAL OF HIGH ENERGY PHYSICS, (4), 24 pages. doi:10.1007/JHEP04(2016)037

DOI
10.1007/JHEP04(2016)037
Journal article

Charm physics with domain wall fermions and physical pion masses

Boyle, P., Del Debbio, L., Jüttner, A., Khamseh, A., Sanfilippo, F., Tsang, J. T., & Witzel, O. (2016). Charm physics with domain wall fermions and physical pion masses. In Proceedings of Science Vol. Part F128557.

Conference Paper

Form factors for semi-leptonic B decays

Flynn, J., Izubuchi, T., Jüttner, A., Kawanai, T., Lehner, C., Lizarazo, E., . . . Witzel, O. (2016). Form factors for semi-leptonic B decays. In Proceedings of Science Vol. Part F128557.

Conference Paper

Progress in the calculation of purely leptonic D(s) –decay constants from lattice QCD

Tsang, J. T. (2016). Progress in the calculation of purely leptonic D(s) –decay constants from lattice QCD. In Proceedings of Science Vol. 2016-November.

Conference Paper

2015

Improved lattice fermion action for heavy quarks

Cho, Y. -G., Hashimoto, S., Juettner, A., Kaneko, T., Marinkovic, M., Noaki, J. -I., & Tsang, J. T. (2015). Improved lattice fermion action for heavy quarks. JOURNAL OF HIGH ENERGY PHYSICS, (5), 32 pages. doi:10.1007/JHEP05(2015)072

DOI
10.1007/JHEP05(2015)072
Journal article

Domain wall charm physics with physical pION masses: Decay constants, bag and ξ parameters

Boyle, P., Del Debbio, L., Khamseh, A., Jüttner, A., Sanfilippo, F., & Tsang, J. T. (2015). Domain wall charm physics with physical pION masses: Decay constants, bag and ξ parameters. In Proceedings of Science Vol. 14-18-July-2015.

Conference Paper

2014

Charm physics with Moebius Domain Wall fermions

Jüttner, A., Sanfilippo, F., Tsang, J. T., Boyle, P., Marinković, M., Hashimoto, S., . . . Cho, Y. G. (2014). Charm physics with Moebius Domain Wall fermions. In Proceedings of Science Vol. Part F130500.

Conference Paper

Charm physics with physical light and strange quarks using domain wall fermions

Jüttner, A., Sanfilippo, F., Tsang, J. T., Boyle, P. A., Del Debbio, L., Khamseh, A., . . . Marinkovic, M. (2014). Charm physics with physical light and strange quarks using domain wall fermions. In Proceedings of Science Vol. Part F130500.

Conference Paper

Scaling study of an improved fermion action on quenched lattices

Cho, Y. G., Hashimoto, S., Noaki, J. I., Kaneko, T., Jüttner, A., Tsang, J., & Marinkovic, M. (2014). Scaling study of an improved fermion action on quenched lattices. In Proceedings of Science Vol. Part F130500.

Conference Paper