Results 21 to 30 of about 825,879 (300)
Consistency of hadronic vacuum polarization between lattice QCD and the R ratio [PDF]
Physical Review D, 2020 There are emerging tensions for theory results of the hadronic vacuum polarization contribution to the muon anomalous magnetic moment both within recent lattice QCD calculations and between some lattice QCD calculations and R-ratio results. In this paper
C. Lehner, A. Meyer
semanticscholar +1 more source
The negative-parity spin-1/2 Λ baryon spectrum from lattice QCD and effective theory
Physics Letters B, 2021 The spectrum of the negative-parity spin-1/2 Λ baryons is studied using lattice QCD and hadronic effective theory in a unitarized coupled-channel framework.
Rafael Pavao +5 more
doaj +1 more source
International Journal of Modern Physics A, 2006 In the past year, we calculated with lattice QCD three quantities that were unknown or poorly known. They are the q2 dependence of the form factor in semileptonic D → Klν decay, the decay constant of the D meson, and the mass of the Bc meson. In this talk, we summarize these calculations, with emphasis on their (subsequent) confirmation by experiments.
S. Kronfeld, Andreas +26 more
openaire +2 more sources
Neutral B -meson mixing from full lattice QCD at the physical point [PDF]
Physical Review D, 2019 We calculate the bag parameters for neutral $B$-meson mixing in and beyond the Standard Model, in full four-flavor lattice QCD for the first time. We work on gluon field configurations that include the effect of $u$, $d$, $s$, and $c$ sea quarks with the
R. Dowdall +6 more
semanticscholar +1 more source
On the role of isospin violation in the pion–nucleon σ-term
Physics Letters B, 2023 In recent years, a persistent tension between phenomenological and lattice QCD determinations of the pion–nucleon σ-term σπN has developed. In particular, lattice-QCD calculations have matured to the point that isospin-violating effects need to be ...
Martin Hoferichter +3 more
doaj +1 more source
Lattice QCD and Three-Particle Decays of Resonances [PDF]
Annual Review of Nuclear and Particle Science, 2019 Most strong-interaction resonances have decay channels involving three or more particles, including many of the recently discovered X, Y, and Z resonances.
M. Hansen, S. Sharpe
semanticscholar +1 more source
Pion valence quark distribution from matrix element calculated in lattice QCD [PDF]
Physical Review D, 2019 We present the first exploratory lattice QCD calculation of the pion valence quark distribution extracted from spatially separated current-current correlations in coordinate space.
R. Sufian +5 more
semanticscholar +1 more source
Excited bottomonia in quark-gluon plasma from lattice QCD
Physics Letters B, 2020 We present the first lattice QCD study of up to 3S and 2P bottomonia at non-zero temperatures. Correlation functions of bottomonia were computed using novel bottomonium operators and a variational technique, within the lattice non-relativistic QCD ...
Rasmus Larsen +3 more
doaj +1 more source
Aspects of chiral transition in a Hadron Resonance Gas model [PDF]
EPJ Web of Conferences, 2022 We study the chiral condensate for 2 + 1 flavor QCD with physical quarks within a non-interacting Hadron Resonance Gas (HRG) model. By including the latest information on the mass variation of the hadrons concerning the light quark mass, from lattice QCD
Biswas Deeptak +2 more
doaj +1 more source
Light-meson leptonic decay rates in lattice QCD+QED [PDF]
Physical Review D, 2019 The leading electromagnetic (e.m.) and strong isospin-breaking corrections to the $\pi^+ \to \mu^+ \nu[\gamma]$ and $K^+ \to \mu^+ \nu[\gamma]$ leptonic decay rates are evaluated for the first time on the lattice.
M. Carlo +7 more
semanticscholar +1 more source