Zobrazeno 1 - 10
of 218
pro vyhledávání: '"J, Shigemitsu"'
Autor:
C. T. H. Davies, C. McNeile, G. P. Lepage, R. R. Horgan, Christopher Monahan, J. Shigemitsu, R.J. Dowdall
Publikováno v:
Proceedings of 31st International Symposium on Lattice Field Theory LATTICE 2013 — PoS(LATTICE 2013).
Calculations of pseudoscalar decay constants of B, Bs, K and p mesons with physical light quarks are presented. We use HISQ ensembles that include u;d;s and c sea quarks at three lattice spacings. HISQ is used for the valence light quarks and a radia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4adb3a338df2495290250a890490d5c8
https://doi.org/10.22323/1.187.0406
https://doi.org/10.22323/1.187.0406
Publikováno v:
Nuclear Physics B - Proceedings Supplements. 94:423-426
According to the Narnhofer Thirring Theorem interacting systems at finite temperature cannot be described by particles with a sharp dispersion law. It is therefore mandatory to develop new methods to extract particle masses at finite temperature. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58508e3a0715a17e05b12e643f5b7cd1
https://doi.org/10.1016/s0920-5632(01)00994-x
https://doi.org/10.1016/s0920-5632(01)00994-x
Publikováno v:
Physical review letters. 110(22)
We present the first lattice QCD calculation of the decay constants f(B) and f(B(s)) with physical light quark masses. We use configurations generated by the MILC Collaboration including the effect of u, d, s, and c highly improved staggered quarks i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::7837b514927f8c02be0627d1dcc0067b
https://pubmed.ncbi.nlm.nih.gov/23767714
https://pubmed.ncbi.nlm.nih.gov/23767714
Autor:
J. Sloan, J. Shigemitsu
Publikováno v:
Nuclear Physics B - Proceedings Supplements. 30:639-642
We compare simulations of a Yukawa model with a U(1) x U(1) symmetry to universal behavior predicted by chiral perturbation theory. Atfixed volume, we find good agreement between measurements of the magnetization and predictions. We find it necessary
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::18fb60237d088bb90828ede5764e362d
https://doi.org/10.1016/0920-5632(93)90292-e
https://doi.org/10.1016/0920-5632(93)90292-e
Publikováno v:
Physical review letters. 100(6)
We determine D and D(s) decay constants from lattice QCD with 2% errors, 4 times better than experiment and previous theory: f(D(s))=241(3) MeV, f(D)=207(4) MeV, and fD(s))/f(D)=1.164(11). We also obtain f(K)/f(pi)=1.189(7) and (f(D(s))/f(D))/(f(K)/f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::c9ce9232d28e3204ece1c132d054087c
https://pubmed.ncbi.nlm.nih.gov/18352458
https://pubmed.ncbi.nlm.nih.gov/18352458
The scaling corrections that affected previous staggered calculations of B_K have been proved to be reduced by using improved actions (HYP, Asqtad) in the quenched approximation. This improved behaviour allows us to perform a reliable dynamical calcu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b3c30b2ac79b44c1057a6516b6a716d
http://arxiv.org/abs/hep-lat/0509188
http://arxiv.org/abs/hep-lat/0509188
Autor:
Q, Mason, H D, Trottier, C T H, Davies, K, Foley, A, Gray, G P, Lepage, M, Nobes, J, Shigemitsu
Publikováno v:
Physical review letters. 95(5)
We obtain a new value for the QCD coupling constant by combining lattice QCD simulations with experimental data for hadron masses. Our lattice analysis is the first to (1) include vacuum polarization effects from all three light-quark flavors (using
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::31465db873d8cf044f13a00676e8bf23
https://pubmed.ncbi.nlm.nih.gov/16090866
https://pubmed.ncbi.nlm.nih.gov/16090866
Publikováno v:
Nuclear Physics B - Proceedings Supplements. 42:382-384
Preliminary results on spectrum and decay constant of $B$ mesons from a quenched simulation at $\beta = 6.0$ on an $16^3\times48$ lattice are discussed. The heavy quark has been implemented using both an NRQCD and the static formulation, the light on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0095fe325d5af645273afed815657da1
https://doi.org/10.1016/0920-5632(95)00256-9
https://doi.org/10.1016/0920-5632(95)00256-9
Publikováno v:
Shigemitsu, J, T. H. Davies, C, Gray, A, Gulez, E, P. Lepage, G & Wingate, M 2003, ' Heavy-Light Meson Semileptonic Decays with Staggered Light Quarks ', Nuclear Physics B-Proceedings Supplements, vol. 129-130, pp. 331–333 . https://doi.org/10.1016/S0920-5632(03)02572-6
We report on exploratory studies of heavy-light meson semileptonic decays using Asqtad light quarks, NRQCD heavy quarks and Symanzik improved glue on coarse quenched lattices. Oscillatory contributions to three-point correlators coming from the stagg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cf414bf34184c9fa8815c34f7fbed1e9
We determine matrix elements for $B \to D$ semileptonic decay. The use of the constrained fitting method and multiple smearings for both two- and three-point correlators allows an improved calculation of the form factors.
Talk given at Lattice20
Talk given at Lattice20
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c9b47460b244b0b5963376107142e2d
http://arxiv.org/abs/hep-lat/0110099
http://arxiv.org/abs/hep-lat/0110099