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1.
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Towards the super Yang-Mills spectrum at large $N_c$
/ Martins, Sofie (Odense U.) ; Della Morte, Michele (Odense U.) ; Jäger, Benjamin (Odense U.) ; Tsang, Justus Tobias (CERN) ; Ziegler, Felix Paul Gerhard (Edinburgh U.)
We examine one-flavour $SU(N_c)$ gauge theories, where $N_c$ denotes the number of colors, with one fermion in the antisymmetric representation as a candidate to approximate $\mathcal{N}=1$ super Yang Mills due to their equivalence in the large-$N_c$ limit. Summarising results on spectral evaluations of $N_c=3$, we will report on the progress of dynamical calculations for $N_c>3$. [...]
arXiv:2312.12410; CERN-TH-2023-242.-
2024-05-04 - 8 p.
- Published in : PoS LATTICE2023 (2024) 101
Fulltext: 2312.12410 - PDF; document - PDF;
In : 40th International Symposium on Lattice Field Theory (Lattice 2023), Fermilab, Batavia, IL, United States, 30 Jul - 5 Aug 2023, pp.101
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2.
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Spectrum of QCD with one flavor: A window for supersymmetric dynamics
/ Della Morte, Michele (Southern Denmark U., CP3-Origins) ; Jäger, Benjamin (Southern Denmark U., CP3-Origins ; U. Southern Denmark, Odense, DIAS) ; Sannino, Francesco (Southern Denmark U., CP3-Origins ; U. Southern Denmark, Odense, DIAS ; Naples U.) ; Tsang, Justus Tobias (CERN ; Southern Denmark U., CP3-Origins) ; Ziegler, Felix P.G. (Edinburgh U.)
We compute the spectrum of the low-lying mesonic states with vector, scalar and pseudoscalar quantum numbers in QCD with one flavour. With three colours the fundamental and the two-index anti-symmetric representations of the gauge group coincide. [...]
arXiv:2302.10514; CERN-TH-2023-028.-
2023-06-01 - 17 p.
- Published in : Phys. Rev. D 107 (2023) 114506
Fulltext: 2302.10514 - PDF; Publication - PDF;
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3.
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LapH interpolating fields with open boundary conditions
/ Della Morte, Michele (Southern Denmark U., CP3-Origins) ; Francesconi, Olmo (Southern Denmark U., CP3-Origins) ; Tsang, Justus Tobias (CERN)
The stochastic Laplacian Heaviside (LapH) method has proven to be successful in hadronic calculations. In this work, with charm-light spectroscopy in mind, we set up and optimise the LapH procedure limiting ourselves to the evaluation of two-point mesonic correlation functions. [...]
arXiv:2212.09695; CERN-TH-2022-212.-
2023-01-05 - 8 p.
- Published in : PoS LATTICE2022 (2023) 260
Fulltext: document - PDF; 2212.09695 - PDF;
In : 39th International Symposium on Lattice Field Theory (Lattice 2022), Bonn, Germany, 8 - 13 Aug 2022, pp.260
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4.
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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, Michael (Edinburgh U.) ; Boyle, Peter (Brookhaven ; Edinburgh U.) ; Del Debbio, Luigi (Edinburgh U.) ; Erben, Felix (Edinburgh U.) ; Flynn, Jonathan (Southampton U.) ; Jüttner, Andreas (Southampton U. ; CERN) ; Portelli, Antonin (Edinburgh U.) ; Tsang, Justus Tobias (Southern Denmark U., CP3-Origins) ; Witzel, Oliver (Siegen U.)
We present the status of our project to calculate $D \to \pi \ell \nu$, $D \to K \ell \nu$ and $D_s \to K \ell \nu$ semileptonic form factors using domain wall fermions for both heavy and light quarks. Our computations are performed using RBC/UKQCD's set of 2+1 flavour domain wall fermion and Iwasaki gauge field ensembles. [...]
arXiv:2201.02680.-
2022-05-16 - 11 p.
- Published in : PoS LATTICE2021 (2022) 416
Fulltext: document - PDF; 2201.02680 - PDF;
In : 38th International Symposium on Lattice Field Theory, Online, 26 - 30 Jul 2021, pp.416
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5.
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Form factors for semileptonic $B\to \pi\ , B_s\to K$ and $B_s\to D_s$ decays
/ Flynn, Jonathan (Southampton U.) ; Hill, Ryan (Southampton U.) ; Juettner, Andreas (CERN ; Southampton U.) ; Soni, Amarjit (Brookhaven) ; Tsang, Justus Tobias (Southern Denmark U., CP3-Origins) ; Witzel, Oliver (Siegen U.)
We report on our determinations of $B\to \pi\ell\nu$, $B_s\to K \ell \nu$ and $B_s\to D_s \ell \nu$ semileptonic form factors. In addition we discuss the determination of $R$-ratios testing lepton-flavor universality and suggest an improved ratio. [...]
arXiv:2112.10580; Siegen SI-HEP-2021-36.-
2022-05-16 - 11 p.
- Published in : PoS LATTICE2021 (2022) 306
Fulltext: 2112.10580 - PDF; document - PDF;
In : 38th International Symposium on Lattice Field Theory, Online, 26 - 30 Jul 2021, pp.306
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6.
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BSM $B - \bar{B}$ mixing on JLQCD and RBC/UKQCD $N_f=2+1$ DWF ensembles
/ Boyle, Peter (U. Edinburgh, Higgs Ctr. Theor. Phys. ; Brookhaven) ; Erben, Felix (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Jüttner, Andreas (Southampton U. ; CERN) ; Kaneko, Takashi (KEK, Tsukuba ; Sokendai, Tsukuba) ; Marshall, Michael (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Portelli, Antonin (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Witzel, Oliver (U. Siegen (main)) ; Del Debbio, Luigi (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Tsang, Justus Tobias (Southern Denmark U., CP3-Origins)
We are presenting our ongoing Lattice QCD study on $B - \bar{B}$ mixing on several RBC/UKQCD and JLQCD ensembles with 2+1 dynamical-flavour domain-wall fermions, including physical-pion-mass ensembles. We are extracting bag parameters $B_{B_d}$ and $B_{B_s}$ using the full 5-mixing-operator basis to study both Standard-Model mixing as well as Beyond the Standard Model mixing, using a fully correlated combined fit to two-point functions and ratios of three-point and two-point functions. [...]
arXiv:2111.11287.-
2022-05-16 - 10 p.
- Published in : PoS: LATTICE2021 (2022) , pp. 224
Fulltext: 2111.11287 - PDF; document - PDF;
In : 38th International Symposium on Lattice Field Theory, Online, 26 - 30 Jul 2021, pp.224
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7.
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8.
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Improved lattice fermion action for heavy quarks
/ Cho, Yong-Gwi (Tsukuba U., GSPAS) ; Hashimoto, Shoji (KEK, Tsukuba ; Tsukuba, Graduate U. Adv. Studies) ; Jüttner, Andreas (Southampton U.) ; Kaneko, Takashi (KEK, Tsukuba ; Tsukuba, Graduate U. Adv. Studies) ; Marinkovic, Marina (CERN ; Southampton U.) ; Noaki, Jun-Ichi (KEK, Tsukuba) ; Tsang, Justus Tobias (Southampton U.)
We develop an improved lattice action for heavy quarks based on Brillouin-type fermions, that have excellent energy-momentum dispersion relation. The leading discretization errors of $O(a)$ and $O(a^2)$ are eliminated at tree-level. [...]
arXiv:1504.01630; UTHEP-673; KEK-CP-321; CERN-PH-TH-2015-074; CERN-PH-TH-2015-074.-
Geneva : CERN, 2015-05-14 - 33 p.
- Published in : JHEP 05 (2015) 072
Article from SCOAP3: PDF; Fulltext: PDF; Springer Open Access article: PDF; External link: Preprint
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9.
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Charm physics with physical light and strange quarks using domain wall fermions
/ Jüttner, Andreas (Southampton U.) ; Del Debbio, Luigi (Edinburgh U.) ; Garron, Nicolas (Cambridge U., DAMTP) ; Khamseh, Ava (Edinburgh U.) ; Marinkovic, Marina (Southampton U. ; CERN) ; Sanfilippo, Francesco (Southampton U.) ; Tsang, Justus Tobias (Southampton U.) ; Boyle, Peter A. (Edinburgh U.)
We present a study of charm physics using RBC/UKQCD 2+1 flavour physical point domain wall fermion ensembles for the light quarks as well as for the valence charm quark. After a brief motivation of domain wall fermions as a suitable heavy quark discretisation we will show first results for masses and matrix elements..
arXiv:1502.00845.-
SISSA, 2015-01-25 - 7 p.
- Published in : PoS: LATTICE2014 (2015) , pp. 380
Fulltext: PDF; Published version from PoS: PDF; External link: PoS server
In : 32nd International Symposium on Lattice Field Theory, Columbia U., New York, NY, USA, 23 - 28 Jun 2014, pp.380
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10.
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Charm physics with Moebius Domain Wall Fermions
/ Tsang, Justus Tobias (Southampton U.) ; Jüttner, Andreas (Southampton U.) ; Sanfilippo, Francesco (Southampton U.) ; Boyle, Peter (Edinburgh U.) ; Marinkovic, Marina (Southampton U. ; CERN) ; Hashimoto, Shoji (KEK, Tsukuba ; Sokendai, Tsukuba) ; Kaneko, Takashi (KEK, Tsukuba ; Sokendai, Tsukuba) ; Cho, Yong-Gwi (Tsukuba U., GSPAS)
We present results showing that Domain Wall fermions are a suitable discretisation for the simulation of heavy quarks. This is done by a continuum scaling study of charm quarks in a M\"obius Domain Wall formalism using a quenched set-up. [...]
arXiv:1501.00660.-
SISSA, 2014-12-18 - 7 p.
- Published in : PoS LATTICE2014 (2014) 379
Fulltext: arXiv:1501.00660 - PDF; LATTICE2014_379 - PDF; External link: Preprint
In : 32nd International Symposium on Lattice Field Theory, Columbia U., New York, NY, USA, 23 - 28 Jun 2014, pp.379
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