Continuum limit physics from<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>2</mml:mn><mml:mo>+</mml:mo><mml:mn>1</mml:mn></mml:math>flavor domain wall QCD

Aoki, Yasumichi; Arthur, Rangel; Blum, Tom; Boyle, P. A.; Brömmel, Dirk; Christ, Norman H.; Dawson, C.; Flynn, Jonathan M.; Izubuchi, Taku; Jin, Xiao-Yong; Jung, Chulwoo; Kelly, Christopher; Li, M.; Lichtl, Adam; Lightman, Matthew; Lin, Meifeng; Mawhinney, Robert D.; Maynard, Christopher M.; Ohta, Shigemi; Pendleton, B.J.; Sachrajda, Christopher; Scholz, Enno E.; Soni, Amarjit; Wennekers, Jan; Zanotti, J. M.; Zhou, R.

doi:10.1103/physrevd.83.074508

Cited by 246 publications

(280 citation statements)

References 64 publications

Supporting

Mentioning

265

Contrasting

Unclassified

Order By: Relevance

“…Our exploratory studies [7] have been performed using a 24 3 × 64 lattice with an inverse lattice spacing of 1/a = 1.78 GeV, employing Shamir domain wall fermions [12] with Iwasaki gauge action [13], a pion mass of ∼ 430 MeV and a kaon mass of ∼ 625 MeV [14,15]. We use a sample of 128 configurations, each separated by 20 molecular dynamics time units.…”

Section: Numerical Resultsmentioning

confidence: 99%

“…In order to cancel divergences with the GIM mechanism we include a charm quark with a bare mass of m = 0.2. Using the mass renormalisation factor Z MS m (2 GeV) = 1.498 for this lattice [14], this corresponds to an unphysical charm quark of mass m MS c (2 GeV) = 533 MeV. The main difficulty of this analysis is the removal of the exponential term that grows with increasing T a ; however in practice we find that it is necessary to also consider a term that falls exponentially with T b , which does not converge in the available time extent (i.e.…”

Section: Numerical Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Progress in the exploratory calculation of the rare kaon decays $K\to\pi\ell^+\ell^-$

Lawson¹,

Christ²,

Feng³

et al. 2017

Proceedings of 34th Annual International Symposium on Lattice Field Theory — PoS(LATTICE2016)

View full text Add to dashboard Cite

The rare decays of a kaon into a pion and a lepton/antilepton pair proceed via a flavour changing neutral current and therefore first arise in the Standard Model only as a second order electroweak interaction. This natural suppression makes these decays sensitive to the effects of potential New Physics. However the rare decay channels K + → π + + − are dominated by long-distance contributions, where the two electroweak processes are separated by distances over which nonperturbative QCD effects play a significant role. In this talk I provide an update on the progress of our exploratory calculations of the long-distance contributions to K + → π + + − amplitudes, which make use of the Domain Wall Fermion ensembles of the RBC and UKQCD collaborations, and outline the prospects for further progress of the calculation.

show abstract

Section: Numerical Resultsmentioning

confidence: 99%

Section: Numerical Resultsmentioning

confidence: 99%

Progress in the exploratory calculation of the rare kaon decays $K\to\pi\ell^+\ell^-$

Lawson¹,

Christ²,

Feng³

et al. 2017

Proceedings of 34th Annual International Symposium on Lattice Field Theory — PoS(LATTICE2016)

View full text Add to dashboard Cite

show abstract

“…We use the determination of Z A from the RBC/UKQCD combined analysis of the light hadron spectrum, pseudoscalar meson decay constants and quark masses on the 24 3 and 32 3 ensembles [2]. Figure 1 shows the ratios R 1 and R 2 on the 24 3 , m l a = 0.005 ensemble fitted to a constant with statistical errors estimated using single elimination jack-knife.…”

Section: Ratiosmentioning

confidence: 99%

“…Our analysis is carried out using ensembles produced by the RBC and UKQCD collaborations [2] with the Iwasaki gauge action and 2+1 flavour dynamical domain-wall fermions. The configurations are at two lattice spacings, the finer 32 2 ensembles have an inverse lattice spacing of a −1 = 2.28(3) GeV and the coarser 24 3 ensmbles have a −1 = 1.73(3) GeV, corresponding to approximately 0.08 fm and 0.11 fm respectively.…”

Section: Calculational Strategymentioning

confidence: 99%

The $B^*B\pi$ coupling with relativistic heavy quarks

Flynn¹,

Fritzsch²,

Kawanai³

et al. 2014

Proceedings of 31st International Symposium on Lattice Field Theory LATTICE 2013 — PoS(LATTICE 2013)

View full text Add to dashboard Cite

We report on a calculation of the B * Bπ coupling in lattice QCD. The strong matrix element Bπ|B * is directly related to the leading order low-energy constant in heavy meson chiral perturbation theory (HMχPT) for B-mesons. We carry out our calculation directly at the b-quark mass using a non-perturbatively tuned clover action that controls discretisation effects of order | pa| and (ma) n for all n. Our analysis is performed on RBC/UKQCD gauge configurations using domain wall fermions and the Iwasaki gauge action at two lattice spacings of a −1 = 1.73(3) GeV, a −1 = 2.28(3) GeV, and unitary pion masses down to 290 MeV. We achieve good statistical precision and control all systematic uncertainties, giving a final result for the HMχPT coupling g b = 0.569(48) stat (59) sys in the continuum and at the physical light-quark masses. This is the first calculation performed directly at the physical b-quark mass and lies in the region one would expect from carrying out an interpolation between previous results at the charm mass and at the static point.

show abstract

“…The light quark masses range from 0.005 to 0.03 (pion masses 331 MeV to 672 MeV) with a fixed strange quark mass, am s = 0.04, for the 24 3 ensemble. For the 32 3 ensemble, the light quark mass ranges from 0.004 to 0.006 (pion masses 290 MeV to 420 MeV) with a unitary am s = 0.03 and partially quenched am s = 0.025 [4,5]. …”

Section: Introductionmentioning

confidence: 99%

Parton Distribution Amplitudes

Rae¹,

Arthur²,

Boyle³

et al. 2011

Proceedings of the XXVIII International Symposium on Lattice Field Theory — PoS(Lattice 2010)

Self Cite

View full text Add to dashboard Cite

We calculated the first two moments of the light-cone distribution amplitudes for the pseudoscalar mesons (π and K) and the longitudinally polarised vector mesons (ρ, K * and φ ) as part of the UKQCD and RBC collaborations' N f = 2 + 1 domain-wall fermion phenomenology programme. These quantities were obtained with a good precision and, in particular, the expected effects of SU(3)-flavour symmetry breaking were observed. Operators were renormalised nonperturbatively and extrapolations to the physical point were made, guided by leading order chiral perturbation theory. The main results presented are for two volumes, 16 3 ×32 and 24 3 ×64, with a common lattice spacing. Preliminary results for a lattice with a finer lattice spacing, 32 3 × 64, are discussed and a first look is taken at the use of twisted boundary conditions to extract distribution amplitudes.

show abstract

Continuum limit physics from2+1flavor domain wall QCD

Cited by 246 publications

References 64 publications

Progress in the exploratory calculation of the rare kaon decays $K\to\pi\ell^+\ell^-$

Progress in the exploratory calculation of the rare kaon decays $K\to\pi\ell^+\ell^-$

The $B^*B\pi$ coupling with relativistic heavy quarks

Parton Distribution Amplitudes

Contact Info

Product

Resources

About