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I review the present state of our knowledge about the masses and weak mixing elements of the u, d, s quarks. This is the written version of lectures given in the 1993 Theoretical Advanced Study Instit...
In theories in which the parameters of the low energy theory are not unique, perhaps having different values in different domains of the universe as is possible in some inflationary models, the fermio...
Fine tunings and quark masses: Phenomenology of multiple domain theories
Particles physical parameters the universe
2014/12/22
This talk describes some of the consequences for particle phenomenology of the hypothesis that the physical parameters may vary in different domains of the universe.
Constraints on the variability of quark masses from nuclear binding
Nuclear binding the light quark heavy nuclei attractive
2014/12/19
Based on recent work on nuclear binding, we update and extend the anthropic constraints on the light quark masses, with results that are more tightly constrained than previously obtained. We find that...
Scaling study for 2 HEX smeared fermions: hadron and quark masses
Scaling study 2 HEX smeared fermions hadron
2011/1/6
The goal of this study is to investigate the scaling behaviour of our 2 HEX action. For this purpose, we compute the $N_f=3$ spectrum and compare the results to our 6 EXP action. We find a large scali...
Scaling study for 2 HEX smeared fermions: hadron and quark masses
Scaling study 2 HEX smeared fermions hadron
2011/1/6
The goal of this study is to investigate the scaling behaviour of our 2 HEX action. For this purpose, we compute the $N_f=3$ spectrum and compare the results to our 6 EXP action. We find a large scali...
Ordinary matter is described by six fundamental parameters: three couplings (gravitational, electromagnetic and strong) and three masses: the electron's ($m_e$) and those of the up ($m_u$) and down ($...
Ordinary matter is described by six fundamental parameters: three couplings (gravitational, electromagnetic and strong) and three masses: the electron's ($m_e$) and those of the up ($m_u$) and down ($...
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 in...
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 in...
Two flavor QCD involves three independent mass parameters for which non-perturbative effects are not universal. This precludes matching lattice and perturbative results for non-degenerate quarks and e...
Lattice QCD at the physical point: light quark masses
Lattice QCD physical point light quark masses
2011/1/7
Ordinary matter is described by six fundamental parameters: three couplings (gravitational,
electromagnetic and strong) and three masses: the electron’s (me) and those of the up (mu)
and down (md) q...
Lattice QCD at the physical point: light quark masses
Lattice QCD physical point light quark masses
2011/1/14
Ordinary matter is described by six fundamental parameters: three couplings (gravitational,
electromagnetic and strong) and three masses: the electron’s (me) and those of the up (mu)
and down (md) q...
Quark masses with Nf=2 twisted mass lattice QCD
Quark masses Nf=2 twisted mass lattice QCD
2011/1/13
We present the results of the recent high precision lattice calculation of the average up/down,
strange and charm quarkmasses performed by ETMC with Nf =2 twisted massWilson fermions.
The analysis i...
Scaling study for 2 HEX smeared fermions: hadron and quark masses
Scaling study 2 HEX smeared fermions: hadron quark masses
2011/1/13
The goal of this study is to investigate the scaling behaviour of our 2 HEX action. For this purpose,we compute the Nf = 3 spectrum and compare the results to our 6 EXP action. We find a large scaling...