Zobrazeno 1 - 10
of 247
pro vyhledávání: '"SCHROERS, W."'
Autor:
Syritsyn, S. N., Green, J. R., Negele, J. W., Pochinsky, A. V., Engelhardt, M., Hagler, Ph., Musch, B., Schroers, W.
We report contributions to the nucleon spin and momentum from light quarks calculated using dynamical domain wall fermions with pion masses down to 300 MeV and fine lattice spacing a=0.084 fm. Albeit without disconnected diagrams, we observe that spi
Externí odkaz:
http://arxiv.org/abs/1111.0718
Autor:
Collins, S., Göckeler, M., Hägler, Ph., Horsley, R., Nakamura, Y., Nobile, A., Pleiter, D., Rakow, P. E. L., Schäfer, A., Schierholz, G., Schroers, W., Stüben, H., Winter, F., Zanotti, J. M.
We present a comprehensive analysis of the electromagnetic form factors of the nucleon from a lattice simulation with two flavors of dynamical O(a)-improved Wilson fermions. A key feature of our calculation is that we make use of an extensive ensembl
Externí odkaz:
http://arxiv.org/abs/1106.3580
Autor:
Lin, M. F., Bratt, J. D., Engelhardt, M., Hagler, Ph., Hemmert, T. R., Meyer, H. B., Negele, J. W., Pochinsky, A. V., Procura, M., Schroers, W., Syritsyn, S.
Publikováno v:
PoS(LAT2009)127
We present the recent high-statistics calculations of the nucleon electromagnetic form factors with fully dynamical domain wall fermions on the 32^3x64 lattices generated by the RBC and UKQCD collaborations, with pion masses at roughly 297 MeV, 355 M
Externí odkaz:
http://arxiv.org/abs/1002.3550
Autor:
Syritsyn, S. N., Bratt, J. D., Lin, M. F., Meyer, H. B., Negele, J. W., Pochinsky, A. V., Procura, M., Engelhardt, M., Hagler, Ph., Hemmert, T. R., Schroers, W.
Publikováno v:
Phys.Rev.D81:034507,2010
We present a high-statistics calculation of nucleon electromagnetic form factors in $N_f=2+1$ lattice QCD using domain wall quarks on fine lattices, to attain a new level of precision in systematic and statistical errors. Our calculations use $32^3 \
Externí odkaz:
http://arxiv.org/abs/0907.4194
Autor:
Syritsyn, S. N., Bratt, J. D., Lin, M. F., Meyer, H. B., Negele, J. W., Pochinsky, A. V., Procura, M., Edwards, R. G., Orginos, K., Richards, D. G., Engelhardt, M., Fleming, G. T., Hägler, Ph., Musch, B., Renner, D. B., Schroers, W.
Publikováno v:
PoS LATTICE2008:169,2008
We present initial calculations of nucleon matrix elements of twist-two operators with 2+1 flavors of domain wall fermions at a lattice spacing a = 0.084 fm for pion masses down to 300 MeV. We also compare the results with the domain wall calculation
Externí odkaz:
http://arxiv.org/abs/0903.3063
Autor:
Bratt, J. D., Edwards, R. G., Engelhardt, M., Fleming, G. T., Hagler, Ph., Lin, M. F., Meyer, H. B., Musch, B., Negele, J. W., Orginos, K., Pochinsky, A. V., Procura, M., Renner, D. B., Richards, D. G., Schroers, W., Syritsyn, S.
Publikováno v:
PoS LATTICE2008:141,2008
In order to advance lattice calculations of moments of unpolarized, helicity, and transversity distributions, electromagnetic form factors, and generalized form factors of the nucleon to a new level of precision, this work investigates several key as
Externí odkaz:
http://arxiv.org/abs/0810.1933
Autor:
Walker-Loud, Andre, Lin, Huey-Wen, Orginos, Kostas, Richards, D. G., Edwards, R. G., Engelhardt, M., Flemming, G. T., Hagler, Ph., Musch, B., Lin, M. F., Meyer, Harvey B., Negele, John W., Pochinsky, A. V., Procura, Massimiliano, Syritsyn, Sergey, Morningstar, C. J., Renner, D. B., Schroers, W.
Publikováno v:
Phys.Rev.D79:054502,2009
We calculate the light hadron spectrum in full QCD using two plus one flavor Asqtad sea quarks and domain wall valence quarks. Meson and baryon masses are calculated on a lattice of spatial size $L \approx 2.5$\texttt{fm}, and a lattice spacing of $a
Externí odkaz:
http://arxiv.org/abs/0806.4549
Autor:
Göckeler, M., Hägler, Philipp, Horsley, R., Nakamura, Y., Ohtani, M., Pleiter, D., Rakow, P. E. L., Schäfer, A., Schierholz, G., Schroers, W., Stüben, H., Zanotti, J. M.
Publikováno v:
PoSLAT2007:129,2007
Algorithmic progress in recent years made it possible to simulate QCD with Nf=2 flavours of O(a)-improved Wilson fermions at very light quark masses. We present the current results for baryon spectrum states, the nucleon axial coupling and the lowest
Externí odkaz:
http://arxiv.org/abs/0712.0010
Autor:
Braun, V. M., Brömmel, D., Göckeler, M., Horsley, R., Nakamura, Y., Perlt, H., Pleiter, D., Rakow, P. E. L., Schäfer, A., Schierholz, G., Schiller, A., Schroers, W., Streuer, T., Stüben, H., Zanotti, J. M.
Publikováno v:
PoSLAT2007:144,2007
Results are presented for the lowest moment of the distribution amplitude for the K-star vector meson. Both longitudinal and transverse moments are investigated. We use two flavours of O(a) improved Wilson fermions, together with a non-perturbative r
Externí odkaz:
http://arxiv.org/abs/0711.2174
Publikováno v:
Phys.Rev.D77:085012,2008
The electromagnetic nucleon to Delta transition form factors are evaluated using two degenerate flavors of dynamical Wilson fermions and using dynamical sea staggered fermions with domain wall valence quarks. The two subdominant quadrupole form facto
Externí odkaz:
http://arxiv.org/abs/0710.4621