Zobrazeno 1 - 10
of 124
pro vyhledávání: '"Frison, J."'
Autor:
Bussone, A., Conigli, A., Frison, J., Herdoíza, G., Pena, C., Preti, D., Romero, J. Á., Ugarrio, J.
We report on our ongoing determination of the charm quark mass and the masses and decay constants of various charmed mesons, obtained within a mixed-action setup. We employ $N_f=2+1$ CLS ensembles combined with a Wilson twisted mass valence action th
Externí odkaz:
http://arxiv.org/abs/2112.00666
QCD topological susceptibility at high temperature, $\chi_t(T)$, provides an important input for the estimate of the axion abundance in the present Universe. While the model independent determination of $\chi_t(T)$ should be possible from the first p
Externí odkaz:
http://arxiv.org/abs/1606.07175
Autor:
Bai, Z., Blum, T., Boyle, P. A., Christ, N. H., Frison, J., Garron, N., Izubuchi, T., Jung, C., Kelly, C., Lehner, C., Mawhinney, R. D., Sachrajda, C. T., Soni, A., Zhang, D.
In this document we address an error discovered in the ensemble generation for our calculation of the $I=0$ $K\to\pi\pi$ amplitude (Phys. Rev. Lett. 115, 212001 (2015), arXiv:1505.07863) whereby the same random numbers were used for the two independe
Externí odkaz:
http://arxiv.org/abs/1603.03065
Autor:
Bai, Z., Blum, T., Boyle, P. A., Christ, N. H., Frison, J., Garron, N., Izubuchi, T., Jung, C., Kelly, C., Lehner, C., Mawhinney, R. D., Sachrajda, C. T., Soni, A., Zhang, D.
Publikováno v:
Phys. Rev. Lett. 115, 212001 (2015)
We report the first lattice QCD calculation of the complex kaon decay amplitude $A_0$ with physical kinematics, using a $32^3\times 64$ lattice volume and a single lattice spacing $a$, with $1/a= 1.3784(68)$ GeV. We find Re$(A_0) = 4.66(1.00)(1.26) \
Externí odkaz:
http://arxiv.org/abs/1505.07863
Autor:
Blum, T., Boyle, P. A., Christ, N. H., Frison, J., Garron, N., Janowski, T., Jung, C., Kelly, C., Lehner, C., Lytle, A., Mawhinney, R. D., Sachrajda, C. T., Soni, A., Yin, H., Zhang, D.
Publikováno v:
Phys. Rev. D 91, 074502 (2015)
We present new results for the amplitude $A_2$ for a kaon to decay into two pions with isospin $I=2$: Re$A_2 = 1.50(4)_\mathrm{stat}(14)_\mathrm{syst}\times 10^{-8}$ GeV; Im$A_2 = -6.99(20)_\mathrm{stat}(84)_\mathrm{syst}\times 10^{-13}$ GeV. These r
Externí odkaz:
http://arxiv.org/abs/1502.00263
Autor:
RBC, collaborations, UKQCD, Blum, T., Boyle, P. A., Christ, N. H., Frison, J., Garron, N., Hudspith, R. J., Izubuchi, T., Janowski, T., Jung, C., Juettner, A., Kelly, C., Kenway, R. D., Lehner, C., Marinkovic, M., Mawhinney, R. D., McGlynn, G., Murphy, D. J., Ohta, S., Portelli, A., Sachrajda, C. T., Soni, A.
Publikováno v:
Phys. Rev. D 93, 074505 (2016)
We present results for several light hadronic quantities ($f_\pi$, $f_K$, $B_K$, $m_{ud}$, $m_s$, $t_0^{1/2}$, $w_0$) obtained from simulations of 2+1 flavor domain wall lattice QCD with large physical volumes and nearly-physical pion masses at two l
Externí odkaz:
http://arxiv.org/abs/1411.7017
Autor:
Borsanyi, Sz., Dürr, S., Fodor, Z., Frison, J., Hoelbling, C., Katz, S. D., Krieg, S., Kurth, Th., Lellouch, L., Lippert, Th., Portelli, A., Ramos, A., Sastre, A., Szabo, K.
Publikováno v:
Phys. Rev. Lett. 111, 252001 (2013)
While electromagnetic and up-down quark mass difference effects on octet baryon masses are very small, they have important consequences. The stability of the hydrogen atom against beta decay is a prominent example. Here we include these effects by ad
Externí odkaz:
http://arxiv.org/abs/1306.2287
Autor:
Durr, S., Fodor, Z., Hemmert, T., Hoelbling, C., Frison, J., Katz, S. D., Krieg, S., Kurth, T., Lellouch, L., Lippert, T., Portelli, A., Ramos, A., Schafer, A., Szabo, K. K.
Publikováno v:
Phys. Rev. D 85, 014509 (2012)
By using lattice QCD computations we determine the sigma terms and strangeness content of all octet baryons by means of an application of the Hellmann-Feynman theorem. In addition to polynomial and rational expressions for the quark mass dependence o
Externí odkaz:
http://arxiv.org/abs/1109.4265
Autor:
Durr, S., Fodor, Z., Frison, J., Hemmert, T., Hoelbling, C., Katz, S. D., Krieg, S., Kurth, T., Lellouch, L., Lippert, T., Portelli, A., Ramos, A., Schafer, A., Szabo, K. K.
Publikováno v:
PoS Lattice2010:102,2010
A status report is given for a joint project of the Budapest-Marseille-Wuppertal collaboration and the Regensburg group to study the quark mass-dependence of octet baryons in SU(3) Baryon XPT. This formulation is expected to extend to larger masses t
Externí odkaz:
http://arxiv.org/abs/1012.1208
Autor:
Portelli, A., Dürr, S., Fodor, Z., Frison, J., Hoelbling, C., Katz, S. D., Krieg, S., Kurth, T., Lellouch, L., Lippert, T., Szabó, K. K., Ramos, A.
At the precision reached in current lattice QCD calculations, electromagnetic effects are becoming numerically relevant. We will present preliminary results for electromagnetic corrections to light hadron masses, based on simulations in which a $\mat
Externí odkaz:
http://arxiv.org/abs/1011.4189