Semantic Scholar Open Access 2010 3 sitasi

Quark masses with Nf=2 twisted mass lattice QCD

B. Blossier P. Dimopoulos R. Frezzotti V. Lubicz M. Petschlies +4 lainnya

Lihat Sumber DOI

Abstrak

We present the results of the recent high precision lattice calculation of the average up/down, strange and charm quark masses performed by ETMC 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 MeV, allowing for accurate continuum limit and chiral extrapolation. The strange and charm masses are extracted by using several methods, based on different observables: the kaon and the eta_s meson for the strange quark and the D, D_s and eta_c mesons for the charm. The quark mass renormalization is carried out non-perturbatively using the RI-MOM method. The results for the quark masses in the MSbar scheme read: m_ud(2 GeV)= 3.6(2) MeV, m_s(2 GeV)=95(6) MeV and m_c(m_c)=1.28(4) GeV. We have also obtained the ratios m_s/m_ud=27.3(9) and m_c/m_s=12.0(3). Moreover, we provide the updated result for the bottom quark mass, m_b(m_b)=4.3(2) GeV, obtained using the method presented in 0909.3187 [hep-lat].

Topik & Kata Kunci

Physics

Penulis (9)

B. Blossier

P. Dimopoulos

R. Frezzotti

V. Lubicz

M. Petschlies

G. Rossi

F. Sanfilippo

S. Simula

C. Tarantino

Format Sitasi

APA MLA BibTeX

Blossier, B., Dimopoulos, P., Frezzotti, R., Lubicz, V., Petschlies, M., Rossi, G. et al. (2010). Quark masses with Nf=2 twisted mass lattice QCD. https://doi.org/10.22323/1.105.0239

Akses Cepat

Lihat di Sumber doi.org/10.22323/1.105.0239

Informasi Jurnal

Tahun Terbit: 2010
Bahasa: en
Total Sitasi: 3×
Sumber Database: Semantic Scholar
DOI: 10.22323/1.105.0239
Akses: Open Access ✓