Results 101 to 110 of about 1,767 (185)

Phase structure of 2+1-flavor QCD from an Einstein-dilaton-flavor holographic model

Journal of High Energy Physics
We construct a 2 + 1-flavor holographic QCD model within the Einstein-dilaton-flavor framework and investigate its phase structure. At zero chemical potential, the model reproduces the equation of state and the chiral transition in quantitative agreement
Jin-Yang Shen, Xin-Yi Liu, Jin-Rui Wu, Yue-Liang Wu, Zhen Fang   +4 more
doaj   +1 more source

Recent results on the meson and baryon spectrum from lattice QCD

EPJ Web of Conferences, 2017
Recent lattice results on the meson and baryon spectrum with a focus on the determination of hadronic resonance masses and widths using a combined basis of single-hadron and hadron-hadron interpolating fields are reviewed.
Mohler Daniel
doaj   +1 more source

Bottomonium evolution with in-medium heavy quark potential from lattice QCD

European Physical Journal C: Particles and Fields
The static properties and dynamic evolution of bottomonium states in a hot QCD medium are investigated through the Schrödinger equation with complex heavy quark potentials, which have been presented recently in a lattice QCD study and with three ...
Ge Chen, Baoyi Chen, Jiaxing Zhao
doaj   +1 more source

Heavy-Meson Decay Constants: Isospin Breaking from QCD Sum Rules

EPJ Web of Conferences, 2017
Compared with lattice QCD, isospin breaking of heavy-meson decay constants from QCD sum rules agrees for D mesons but disagrees (by a factor of four) for B mesons.
Lucha Wolfgang, Melikhov Dmitri, Simula Silvano   +2 more
doaj   +1 more source

Construction of general N-body lattice operators with arbitrary momenta

Journal of High Energy Physics
We present a systematic method for constructing lattice QCD operators for systems of an arbitrary number of particles with arbitrary momentum, spin, and internal quantum numbers. Explicit constructions are provided for one-, two-, three-, and four-hadron
Haobo Yan, Chuan Liu, Liuming Liu, Yu Meng   +3 more
doaj   +1 more source

Gaussian processes for inferring parton distributions

Journal of High Energy Physics
The extraction of parton distribution functions (PDFs) from experimental or lattice QCD data is an ill-posed inverse problem, where regularization strongly impacts both systematic uncertainties and the reliability of the results.
Yamil Cahuana Medrano, Hervé Dutrieux, Joseph Karpie, Kostas Orginos, Savvas Zafeiropoulos, on behalf of the HadStruc Collaboration   +5 more
doaj   +1 more source

A regression algorithm for accelerated lattice QCD that exploits sparse inference on the D-Wave quantum annealer. [PDF]

Sci Rep, 2020
Nguyen NTT, Kenyon GT, Yoon B.
europepmc   +1 more source

Machine learning insights into quark–antiquark interactions: probing field distributions and string tension in QCD

European Physical Journal C: Particles and Fields
Understanding the interactions between quark–antiquark pairs is essential for elucidating quark confinement within the framework of quantum chromodynamics (QCD).
Wei Kou, Xurong Chen
doaj   +1 more source

Lattice QCD

, 1994
The status of Lattice QCD is reviewed with respect to results that are relevant to Standard Model phenomenology. I argue that in a few simple cases all (or almost all) systematic errors from the lattice calculation are under control. Lattice QCD calculations of quarkonia ($\bb$ and $\cc$) have yielded precise determinations of the strong coupling, $α_s$
openaire   +2 more sources

High-precision calculation of the quark-gluon coupling from lattice QCD. [PDF]

Nature
Dalla Brida M, Höllwieser R, Knechtli F, Korzec T, Ramos A, Sint S, Sommer R.   +6 more
europepmc   +1 more source