Zobrazeno 1 - 10
of 619
pro vyhledávání: '"Pene, O"'
It is recalled why, as already stated in a previous paper, there seems to be an inconsistency in identifying the non perturbative ZA,MOM as the renormalisation of the axial current, or equivalently, in setting as normalisation condition that the reno
Externí odkaz:
http://arxiv.org/abs/1503.09083
We compute the decays ${B\to D^\ast_0}$ and ${B\to D^\ast_2}$ with finite masses for the $b$ and $c$ quarks. We first discuss the spectral properties of both the $B$ meson as a function of its momentum and of the $D^\ast_0$ and $D^\ast_2$ at rest. We
Externí odkaz:
http://arxiv.org/abs/1312.2914
Autor:
Blossier, B., Boucaud, Ph., Brinet, M., De Soto, F., Morènas, V., Pène, O., Petrov, K., Rodríguez-Quintero, J.
Publikováno v:
Phys. Rev. D 89, 034026 (2014)
This letter reports on a new procedure for the lattice spacing setting that takes advantage of the very precise determination of the strong coupling in Taylor scheme. Although it can be applied for the physical scale setting with the experimental val
Externí odkaz:
http://arxiv.org/abs/1312.1514
Autor:
Boucaud, Ph., Brinet, M., De Soto, F., Morenas, V., Pène, O., Petrov, K., Rodríguez-Quintero, J.
We present a lattice calculation of the renormalized running coupling constant in symmetric (MOM) and asymmetric ($\widetilde{\rm MOM}$) momentum substraction schemes including $u$, $d$, $s$ and $c$ quarks in the sea. An Operator Product Expansion do
Externí odkaz:
http://arxiv.org/abs/1310.4087
Autor:
Blossier, B., Boucaud, Ph., Brinet, M., De Soto, F., Morenas, V., Pène, O., Petrov, K., Rodríguez-Quintero, J.
Publikováno v:
Phys. Rev. D 89, 014507 (2014)
This paper reports on the determination of $\alpha_S$ from lattice simulations with 2+1+1 twisted-mass dynamical flavours {\it via} the computation of the ghost-gluon coupling renormalized in the MOM Taylor scheme. A high-statistics sample of gauge c
Externí odkaz:
http://arxiv.org/abs/1310.3763
Autor:
Blossier, B., Boucaud, Ph., Brinet, M., De Soto, F., Morenas, V., Pène, O., Petrov, K., Rodríguez-Quintero, J.
Publikováno v:
Phys. Rev. D 87(2013) 074033
Gluon and ghost propagators data, obtained in Landau gauge from lattice simulations with two light and two heavy dynamical quark flavours ($N_f$=2+1+1), are described here with a running formula including a four-loop perturbative expression and a non
Externí odkaz:
http://arxiv.org/abs/1301.7593
Autor:
Blossier, B., Boucaud, Ph., Brinet, M., De Soto, F., Du, X., Morenas, V., Pene, O., Petrov, K., Rodriguez-Quintero, J.
We report on an estimate of \alpha_s, renormalised in the MSbar scheme at the tau and Z^0 mass scales, by means of lattice QCD. Our major improvement compared to previous lattice calculations is that, for the first time, no perturbative treatment at
Externí odkaz:
http://arxiv.org/abs/1210.1053
Autor:
Blossier, B., Boucaud, Ph., Brinet, M., De Soto, F., Du, X., Morenas, V., Pène, O., Petrov, K., Rodríguez-Quintero, J.
This letter reports on the first computation, from data obtained in lattice QCD with $u,d,s$ and $c$ quarks in the sea, of the running strong coupling via the ghost-gluon coupling renormalized in the MOM Taylor scheme. We provide with estimates of $\
Externí odkaz:
http://arxiv.org/abs/1201.5770
Autor:
Blossier, B., Brinet, M., Carrasco, N., Dimopoulos, P., Du, X., Frezzotti, R., Gimenez, V., Herdoiza, G., Jansen, K., Lubicz, V., Palao, D., Pallante, E., Pene, O., Petrov, K., Reker, S., Rossi, G. C., Sanfilippo, F., Scorzato, L., Simula, S., Urbach, C.
We present preliminary results of the non-perturbative computation of the RI-MOM renormalisation constants in a mass-independent scheme for the action with Iwasaki glue and four dynamical Wilson quarks employed by ETMC. Our project requires dedicated
Externí odkaz:
http://arxiv.org/abs/1112.1540
Autor:
Blossier, B., Boucaud, Ph., Brinet, M., De Soto, F., Du, X., Gravina, M., Liu, Z., Morenas, V., Pène, O., Petrov, K., Rodríguez-Quintero, J.
We study RI/MOM renormalization constants of bilinear quark operators for $N_f=4$ and the strong coupling constant for $N_f=2+1+1$ using Wilson twisted-mass fermions. We use the "egalitarian" method to remove H(4) hypercubic artifacts non-perturbativ
Externí odkaz:
http://arxiv.org/abs/1111.3023