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Related papers: The static-light baryon spectrum from twisted mass…

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We present details of simulations for the light hadron spectrum in quenched QCD carried out on the CP-PACS parallel computer. Simulations are made with the Wilson quark action and the plaquette gauge action on 32^3x56 - 64^3x112 lattices at…

The masses of the low lying baryons are evaluated using a total of ten ensembles of dynamical twisted mass fermion gauge configurations. The simulations are performed using two degenerate flavors of light quarks, and a strange and a charm…

High Energy Physics - Lattice · Physics 2015-06-22 C. Alexandrou , V. Drach , K. Jansen , C. Kallidonis , G. Koutsou

We determine the light baryon spectrum on ensembles generated by the Coordinated Lattice Simulations (CLS) effort, employing $N_f=2+1$ flavours of non-perturbatively improved Wilson fermions. The hadron masses are interpolated and…

The masses of the low lying baryons are evaluated using two degenerate flavors of twisted mass sea quarks corresponding to pseudo scalar masses in the range of about 270-500 MeV. The strange valence quark mass is tuned to reproduce the mass…

High Energy Physics - Lattice · Physics 2009-12-31 C. Alexandrou , R. Baron , J. Carbonell , V. Drach , P. Guichon , K. Jansen , T. Korzec , O. Pène

We investigate the mass differences of charm and bottom heavy baryons, using MILC lattice gauge configurations with 2+1 dynamical sea quark flavors. We extend our previous work to three lattice spacings: fine (a~0.09), coarse (a~0.12), and…

High Energy Physics - Lattice · Physics 2010-01-21 Heechang Na , Steven Gottlieb

Lattice QCD calculations with background magnetic fields are used to determine the magnetic moments of the octet baryons. Computations are performed at the physical value of the strange quark mass, and two values of the light quark mass,…

High Energy Physics - Lattice · Physics 2017-07-19 Assumpta Parreno , Martin J. Savage , Brian C. Tiburzi , Jonas Wilhelm , Emmanuel Chang , William Detmold , Kostas Orginos

CP-PACS and JLQCD collaborations are carrying out a joint project of the 2+1 flavor full QCD simulation. Gauge configurations are generated for the non-perturbatively $O(a)$-improved Wilson quark action and the Iwasaki gauge action using…

We present results for the static-light meson from unquenched lattice QCD. The unquenched gauge configurations were generated using the non-perturbatively improved clover action. At the fixed lattice spacing of 0.1 fm the lightest sea quark…

High Energy Physics - Lattice · Physics 2008-11-26 UKQCD Collaboration , Craig McNeile , Chris Michael , Gavin Thompson

We present preliminary results for the light harden spectrum in $N_f=2+1$ lattice QCD obtained with the nonperturbatively $O(a)$-improved Wilson quark action and the Iwasaki gauge action. Simulations are carried out at $\beta=1.90$ on a…

We present first results on the octet and decuplet strange baryon spectrum with $N_f=2+1+1$ twisted mass quarks. We use an Osterwalder Seiler valence strange quark with a mass tuned to the kaon and compare the results with those obtained in…

High Energy Physics - Lattice · Physics 2010-12-20 Vincent Drach , Karl Jansen , Jaume Carbonell , Mauro Papinutto , Constantia Alexandrou

Dynamical 2+1 flavour lattice QCD is used to calculate the splittings between the masses of mesons and baryons containing a single static heavy quark and domain-wall light and strange quarks. Our calculations are based on the dynamical…

High Energy Physics - Lattice · Physics 2010-04-15 William Detmold , C. -J. David Lin , Matthew Wingate

We study the heavy baryon mass spectrum on gauge configurations that include 2+1 flavors of dynamical improved staggered quarks. A valence clover heavy quark is combined with two improved staggered light quark propagators to form baryons…

High Energy Physics - Lattice · Physics 2008-11-26 Heechang Na , Steven Gottlieb

We determine the light quark masses from lattice QCD simulations incorporating the electromagnetic interaction of valence quarks. The meson masses are calculated on lattice QCD configurations generated by the RBC Collaboration for two…

High Energy Physics - Lattice · Physics 2008-11-26 Thomas Blum , Takumi Doi , Masashi Hayakawa , Taku Izubuchi , Norikazu Yamada

By simulating a uniform electric field on a lattice and measuring the change in the rest mass, we calculate the electric polarizability of neutral mesons and baryons using the methods of quenched lattice QCD. Specifically, we measure the…

High Energy Physics - Lattice · Physics 2008-11-26 Joe Christensen , Walter Wilcox , Frank X. Lee , Leming Zhou

We investigate the negative-parity baryon spectra in quenched lattice QCD. We employ the anisotropic lattice with standard Wilson gauge and O(a) improved Wilson quark actions at three values of lattice spacings with renormalized anisotropy…

High Energy Physics - Lattice · Physics 2009-11-10 Y. Nemoto , N. Nakajima , H. Matsufuru , H. Suganuma

We present preliminary results for the static-light meson and baryon spectra for $N_f=2$ QCD. The study is performed on an anisotropic lattice and uses a new all-to-all propagator method allowing us to determine particle masses to a high…

High Energy Physics - Lattice · Physics 2008-11-26 Justin Foley , Alan O Cais , Mike Peardon , Sinead M. Ryan , Jon-Ivar Skullerud

We present the final analysis of the light and strange hadron spectra from a full QCD lattice simulation with two degenerate dynamical sea quark flavours at $\beta = 5.6$ on a $16^3 \times 32$ lattice. Four sets of sea quark masses…

High Energy Physics - Lattice · Physics 2016-08-25 N. Eicker , U. Glässner , S. Güsken , H. Hoeber , P. Lacock , Th. Lippert , K. Schilling , A. Spitz , Th. Struckmann , P. Ueberholz , J. Viehoff

CP-PACS and JLQCD Collaborations are carrying out a joint project of the 2+1 flavor full QCD with the RG-improved gauge action and the non-perturbatively ${\cal O}(a)$-improved Wilson quark action. This simulation removes quenching effects…

We present results of lattice QCD simulations with mass-degenerate up and down and mass-split strange and charm (N_f = 2+1+1) dynamical quarks using Wilson twisted mass fermions at maximal twist. The tuning of the strange and charm quark…

We present results on the mass of the baryon octet and decuplet using two flavors of light dynamical twisted mass fermions. The strange quark mass is fixed to its physical value from the kaon sector in a partially quenched set up.…

High Energy Physics - Lattice · Physics 2010-01-21 V. Drach , M. Brinet , J. Carbonell , Z. Liu , C. Alexandrou , T. Korzec , G. Koutsou , R. Baron , P. Guichon , O. Pène , E. Pallante , S. Reker , C. Urbach , K. Jansen