Publications (21)
An update of Euclidean windows of the hadronic vacuum polarization
T. Blum, P. A. Boyle, M. Bruno +14
We compute the standard Euclidean window of the hadronic vacuum polarization using multiple independent blinded analyses. We improve the continuum and infinite-volume extrapolation…
Standard-model prediction for direct CP violation in decay
Z. Bai, T. Blum, P. A. Boyle +11
We report the first lattice QCD calculation of the complex kaon decay amplitude with physical kinematics, using a lattice volume and a single lattice spacing…
Use of stochastic sources for the lattice determination of light quark physics
P. A. Boyle, A. Juttner, C. Kelly +1
In this paper we investigate the benefits of using Z(2)xZ(2) single timeslice stochastic sources for the calculation of light quark physics on the lattice. Meson 2-point correlator…
The pion's electromagnetic form factor at small momentum transfer in full lattice QCD
P. A. Boyle, J. M. Flynn, A. Juttner +5
We compute the electromagnetic form factor of a "pion" with mass m_pi=330MeV at low values of Q^2\equiv -q^2, where q is the momentum transfer. The computations are performed in a…
Domain wall QCD with physical quark masses
RBC, UKQCD collaborations, : +21
We present results for several light hadronic quantities (, , , , , , ) obtained from simulations of 2+1 flavor domain wall lattice QCD…
The Low Energy Constants of Partially Quenched Chiral Perturbation Theory from Domain Wall QCD
P. A. Boyle, N. H. Christ, N. Garron +9
We have performed fits of the pseudoscalar masses and decay constants, from a variety of RBC-UKQCD domain wall fermion ensembles, to partially quenched chiral perturbation…
Continuum Limit of from 2+1 Flavor Domain Wall QCD
Y. Aoki, R. Arthur, T. Blum +17
We determine the neutral kaon mixing matrix element in the continuum limit with 2+1 flavors of domain wall fermions, using the Iwasaki gauge action at two different lattice s…
Mean-square Stability and Bifurcations for Dissipative SDEs
C. Kelly, G. J. Lord, M. Ptashnyk +1
We investigate the dynamics of dissipative systems with stochastic forcing and focus in particular on mean-square stability. First we show, under a natural condition on the drift a…
decay amplitude in the continuum limit
T. Blum, P. A. Boyle, N. H. Christ +12
We present new results for the amplitude for a kaon to decay into two pions with isospin : Re GeV; Im$A_2 =…
Erratum: Standard-model prediction for direct CP violation in decay
Z. Bai, T. Blum, P. A. Boyle +11
In this document we address an error discovered in the ensemble generation for our calculation of the amplitude (Phys. Rev. Lett. 115, 212001 (2015), arXiv:1505.07…
Continuum results for light hadrons from 2+1 flavor DWF ensembles
C. Kelly, P. A. Boyle, C. T. Sachrajda
From simultaneous fits to the data from the 2+1 flavor DWF ensembles generated by the RBC and UKQCD collaborations at two different lattice spacings, we present preliminary continu…
K->pi form factors with reduced model dependence
P. A. Boyle, J. M. Flynn, A. Juttner +6
Using partially twisted boundary conditions we compute the K->pi semi-leptonic form factors in the range of momentum transfers 0 <~ q^2 <= q^2_{max}=(mK-mpi)^2 in lattice QCD with…
Domain Wall Fermion QCD with the Exact One Flavor Algorithm
C. Jung, C. Kelly, R. D. Mawhinney +1
Lattice QCD calculations including the effects of one or more non-degenerate sea quark flavors are conventionally performed using the Rational Hybrid Monte Carlo (RHMC) algorithm,…
The Decay Amplitude from Lattice QCD
T. Blum, P. A. Boyle, N. H. Christ +13
We report on the first realistic \emph{ab initio} calculation of a hadronic weak decay, that of the amplitude for a kaon to decay into two Ï-mesons with isospin 2. We find R…
Continuum Limit Physics from 2+1 Flavor Domain Wall QCD
Y. Aoki, R. Arthur, T. Blum +23
We present physical results obtained from simulations using 2+1 flavors of domain wall quarks and the Iwasaki gauge action at two values of the lattice spacing , (=\,1.7…
Kl3 and pion form factors using partially twisted boundary conditions
P. A. Boyle, J. M. Flynn, A. Jüttner +5
We compute the Kl3 and pion form factors using partially twisted boundary conditions. The twists are chosen so that the Kl3 form factors are calculated directly at zero momentum tr…
Domain Wall QCD with Near-Physical Pions
RBC Collaboration, UKQCD Collaboration, R. Arthur +16
We present physical results for a variety of light hadronic quantities obtained via a combined analysis of three 2+1 flavour domain wall fermion ensemble sets. For two of our ensem…
Combinatorial Quantum Gravity: Emergence of Geometric Space from Random Graphs
C. Kelly, C. A. Trugenberger
We review and extend the recently proposed model of combinatorial quantum gravity. Contrary to previous discrete approaches, this model is defined on (regular) random graphs and is…
Lattice determination of and 2 scattering phase shifts with a physical pion mass
T. Blum, P. A. Boyle, M. Bruno +10
Phase shifts for -wave scattering in both the and channels are determined from a lattice QCD calculation performed on 741 gauge configurations obeying G-parit…
Lattice determination of the Decay Amplitude
T. Blum, P. A. Boyle, N. H. Christ +13
We describe the computation of the amplitude A_2 for a kaon to decay into two pions with isospin I=2. The results presented in the letter Phys.Rev.Lett. 108 (2012) 141601 from an a…
Opening the Rome-Southampton window for operator mixing matrices
R. Arthur, P. A. Boyle, N. Garron +2
We show that the running of operators which mix under renormalization can be computed fully non-perturbatively as a product of continuum step scaling matrices. These step scaling m…