Zobrazeno 1 - 10
of 104
pro vyhledávání: '"ETM Collaboration"'
Autor:
ETM Collaboration, Bussone, A., Carrasco, N., Dimopoulos, P., Frezzotti, R., Lami, P., Lubicz, V., Picca, E., Riggio, L., Rossi, G. C., Simula, S., Tarantino, C.
Publikováno v:
Phys. Rev. D 93, 114505 (2016)
We present precise lattice computations for the b-quark mass, the quark mass ratios mb/mc and mb/ms as well as the leptonic B-decay constants. We employ gauge configurations with four dynamical quark flavors, up/down, strange and charm, at three valu
Externí odkaz:
http://arxiv.org/abs/1603.04306
Autor:
ETM Collaboration, Abdel-Rehim, A., Alexandrou, C., Burger, F., Constantinou, M., Dimopoulos, P., Frezzotti, R., Hadjiyiannakou, K., Helmes, C., Jansen, K., Kallidonis, C. Jost. C., Knippschild, B., Kostrzewa, B., Koutsou, G., Liu, L., Mangin-Brinet, M., Ottnad, K., Petschlies, M., Pientka, G., Rossi, G. C., Urbach, C., Wenger, U., Werner, M.
Publikováno v:
Phys. Rev. D 95, 094515 (2017)
We present physics results from simulations of QCD using $N_f = 2$ dynamical Wilson twisted mass fermions at the physical value of the pion mass. These simulations were enabled by the addition of the clover term to the twisted mass quark action. We s
Externí odkaz:
http://arxiv.org/abs/1507.05068
Publikováno v:
JHEP 1201:025,2012
We determine Lambda_msbar for QCD with n_f=2 dynamical quark flavors by fitting the Q-Q-bar static potential known analytically in the perturbative regime up to terms of O(alpha_s^4) and ~alpha_s^4 ln(alpha_s) to corresponding results obtained from l
Externí odkaz:
http://arxiv.org/abs/1110.6859
Autor:
ETM Collaboration, Dimopoulos, P., Frezzotti, R., Herdoiza, G., Lubicz, V., Michael, C., Palao, D., Rossi, G. C., Sanfilippo, F., Shindler, A., Simula, S., Tarantino, C., Wagner, M.
Publikováno v:
JHEP01(2012)046
We present a lattice QCD determination of the b quark mass and of the B and B_s decay constants, performed with N_f=2 twisted mass Wilson fermions, by simulating at four values of the lattice spacing. In order to study the b quark on the lattice, two
Externí odkaz:
http://arxiv.org/abs/1107.1441
Autor:
ETM Collaboration, Wagner, Marc
Publikováno v:
Acta Physica Polonica B Proceedings Supplement vol. 4 (2011) page 747
I report on a lattice computation of the energy of a system of two light quarks and two static antiquarks as a function of the separation of the static antiquarks. In terms of hadrons such a system corresponds to a pair of B mesons and its energy to
Externí odkaz:
http://arxiv.org/abs/1103.5147
Autor:
ETM Collaboration, Dimopoulos, P., Frezzotti, R., Gimenez, V., Lubicz, V., Martinelli, G., Mescia, F., Papinutto, M., Rossi, G. C., Simula, S., Vladikas, A.
We present preliminary results on the of neutral kaon oscillations in extensions of the Standard Model. Using Nf=2 maximally twisted sea quarks and Osterwalder-Seiler valence quarks, we achieve both O(a)-improvement and continuum-like renormalization
Externí odkaz:
http://arxiv.org/abs/1012.3355
Autor:
ETM Collaboration, Blossier, B., Dimopoulos, P., Frezzotti, R., Lubicz, V., Petschlies, M., Sanfilippo, F., Simula, S., Tarantino, C.
Publikováno v:
Phys.Rev.D82:114513,2010
We present a high precision lattice calculation of the average up/down, strange and charm quark masses performed with Nf=2 twisted mass Wilson fermions. The analysis includes data at four values of the lattice spacing and pion masses as low as ~270 M
Externí odkaz:
http://arxiv.org/abs/1010.3659
Autor:
ETM Collaboration, Constantinou, M., Dimopoulos, P., Frezzotti, R., Jansen, K., Gimenez, V., Lubicz, V., Mescia, F., Panagopoulos, H., Papinutto, M., Rossi, G. C., Simula, S., Skouroupathis, A., Stylianou, F., Vladikas, A.
Publikováno v:
Phys.Rev.D83:014505,2011
We present an unquenched $N_f=2$ lattice computation of the $B_{K}$ parameter which controls $K^0-\bar K^0$ oscillations. A partially quenched setup is employed with two maximally twisted dynamical (sea) light Wilson quarks, and valence quarks of bot
Externí odkaz:
http://arxiv.org/abs/1009.5606
Autor:
ETM Collaboration, Baron, Remi, Boucaud, Philippe, Carbonell, Jaume, Drach, Vincent, Farchioni, Federico, Herdoiza, Gregorio, Jansen, Karl, Michael, Chris, Montvay, Istvan, Pallante, Elisabetta, Reker, Siebren, Urbach, Carsten, Wagner, Marc, Wenger, Urs
We discuss the computation of the kaon and D meson masses in the N_f = 2+1+1 twisted mass lattice QCD setup, where explicit heavy flavor and parity breaking occurs at finite lattice spacing. We present three methods suitable in this context and verif
Externí odkaz:
http://arxiv.org/abs/1009.2074
Autor:
ETM Collaboration, Baron, Remi, Boucaud, Philippe, Carbonell, Jaume, Drach, Vincent, Farchioni, Federico, Herdoiza, Gregorio, Jansen, Karl, Michael, Chris, Montvay, Istvan, Pallante, Elisabetta, Pene, Olivier, Reker, Siebren, Urbach, Carsten, Wagner, Marc, Wenger, Urs
Publikováno v:
Comput.Phys.Commun.182:299-316,2011
We discuss the computation of the mass of the K and D mesons within the framework of N_f = 2+1+1 twisted mass lattice QCD from a technical point of view. These quantities are essential, already at the level of generating gauge configurations, being o
Externí odkaz:
http://arxiv.org/abs/1005.2042