Zobrazeno 1 - 10
of 598
pro vyhledávání: '"Vladikas, A."'
Autor:
Plasencia, Isabel Campos, Brida, Mattia Dalla, de Divitiis, Giulia Maria, Lytle, Andrew, Papinutto, Mauro, Pirelli, Ludovica, Vladikas, Anastassios
We present the preliminary results of the non-perturbative running of the flavour non-singlet tensor operator in the high-energy range $2~\rm{GeV}\lesssim \mu\lesssim 128~\rm{GeV}$ in $N_f=3$ massless QCD, comparing four different definitions of the
Externí odkaz:
http://arxiv.org/abs/2211.08829
Autor:
Plasencia, Isabel Campos, Brida, Mattia Dalla, de Divitiis, Giulia Maria, Lytle, Andrew, Papinutto, Mauro, Pirelli, Ludovica, Vladikas, Anastassios
We study the Renormalisation Group (RG) running of the quark mass, for $N_f=3$ QCD with Wilson fermions in a mixed action setup, with standard Schr\"odinger Functional (SF) boundary conditions for sea quarks and chirally rotated Schr\"odinger Functio
Externí odkaz:
http://arxiv.org/abs/2112.10606
Autor:
Plasencia, Isabel Campos, Brida, Mattia Dalla, de Divitiis, Giulia Maria, Lytle, Andrew, Papinutto, Mauro, Pirelli, Ludovica, Vladikas, Anastassios
We compute the nonperturbative quark mass RG-running in the range $\Lambda_{QCD}\lessapprox\mu\lessapprox M_W$ for $N_f=3$ massless QCD with a mixed action approach: sea quarks are regularised using nonperturbatively $O(a)$-improved Wilson fermions w
Externí odkaz:
http://arxiv.org/abs/2111.15384
Autor:
Plasencia, Isabel Campos, Brida, Mattia Dalla, de Divitiis, Giulia Maria, Lytle, Andrew, Papinutto, Mauro, Pirelli, Ludovica, Vladikas, Anastassios
We present preliminary results of the non-perturbative renormalization group (RG) running of the flavor non-singlet tensor operator. We employ the $\chi$SF scheme for $N_f=3$ QCD using ensembles generated by the ALPHA collaboration for the computatio
Externí odkaz:
http://arxiv.org/abs/2111.15325
We determine non-perturbatively the normalisation factor $r_\mathrm{m}\equiv Z_{\rm S}/Z_{\rm S}^{0}$, where $Z_{\rm S}$ and $Z_{\rm S}^{0}$ are the renormalisation parameters of the flavour non-singlet and singlet scalar densities, respectively. Thi
Externí odkaz:
http://arxiv.org/abs/2101.10969
We derive chiral Ward identities for lattice QCD with Wilson quarks and $N_\mathrm{f} \geq 3$ flavours, on small lattices with Schr\"odinger functional boundary conditions and vanishingly small quark masses. These identities relate the axial variatio
Externí odkaz:
http://arxiv.org/abs/2005.01352
Autor:
Bruno, Mattia, Campos, Isabel, Fritzsch, Patrick, Koponen, Jonna, Pena, Carlos, Preti, David, Ramos, Alberto, Vladikas, Anastassios
Publikováno v:
Eur. Phys. J. C 80, 169 (2020)
We present a lattice QCD determination of light quark masses with three sea-quark flavours ($N_f = 2+1$). Bare quark masses are known from PCAC relations in the framework of CLS lattice computations with a non-perturbatively improved Wilson-Clover ac
Externí odkaz:
http://arxiv.org/abs/1911.08025
Autor:
Campos, Isabel, Brida, Mattia Dalla, de Divitiis, Giulia Maria, Lytle, Andrew, Papinutto, Mauro, Vladikas, Anastassios
We employ the chirally rotated Schr\"odinger functional ($\chi$SF) to study two-point fermion bilinear correlation functions used in the determination of $Z_{A,V,S,P,T}$ on a series of well-tuned ensembles. The gauge configurations, which span renorm
Externí odkaz:
http://arxiv.org/abs/1910.01898
Autor:
de Divitiis, Giulia Maria, Fritzsch, Patrick, Heitger, Jochen, Koester, Carl Christian, Kuberski, Simon, Vladikas, Anastassios
Publikováno v:
Eur. Phys. J. C 79 (2019) 797
We determine non-perturbatively the normalisation constant Z_m*Z_P/Z_A as well as the Symanzik coefficients b_m and b_A-b_P, required in O(a) improved quark mass renormalisation with Wilson fermions. The strategy underlying their computation involves
Externí odkaz:
http://arxiv.org/abs/1906.03445
We present a nearly final analysis of the $u/d$ and $s$ quark masses, extracted using the PCAC quark masses reported in [PRD 95 (2017) 074504]. The data is based on the CLS $N_f = 2 + 1$ simulations with Wilson/Clover quarks and L\"uscher-Weisz gauge
Externí odkaz:
http://arxiv.org/abs/1903.04094