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相关论文: $N^*$ Resonances in Lattice QCD from (mostly) Low …

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The electromagnetic form factors of the proton and the neutron are computed within lattice QCD using simulations with quarks masses fixed to their physical values. Both connected and disconnected contributions are computed. We analyze two…

I review recent lattice QCD results on a few selected topics which are relevant to the heavy ion physics community. Special emphasis is put on the QCD equation of state at vanishing and nonzero baryon chemical potential, the onset of…

高能物理 - 格点 · 物理学 2015-06-22 Heng-Tong Ding

We calculate, in the continuum limit of quenched lattice QCD, the matrix elements of the heavy-heavy vector current between heavy-light pseudoscalar meson states. We present the form factors for different values of the initial and final…

高能物理 - 格点 · 物理学 2008-11-26 G. M. de Divitiis , R. Petronzio , N. Tantalo

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. These mostly…

高能物理 - 格点 · 物理学 2017-04-05 Daniel Mohler

Lattice QCD can contribute to the search for new physics in b -> s decays by providing first-principle calculations of B -> K(*) form factors. Preliminary results are presented here which complement sum rule determinations by being done at…

高能物理 - 唯象学 · 物理学 2015-03-17 Zhaofeng Liu , Stefan Meinel , Alistair Hart , Ron R. Horgan , Eike H. Müller , Matthew Wingate

In this talk we highlight recent lattice calculations of the nucleon form factors and structure functions.

高能物理 - 唯象学 · 物理学 2017-08-23 M. Göckeler , R. Horsley , D. Pleiter , P. E. L. Rakow , G. Schierholz

Results are presented for hadron spectroscopy with gauge groups SU(N) with N=3, 5, 7. Calculations use the quenched approximation. Lattice spacings are matched using the static potential. Meson spectra show independence on N and…

高能物理 - 格点 · 物理学 2013-05-30 Thomas DeGrand

We present spectra of highly excited D and Ds mesons up to around 3.8 GeV determined using dynamical lattice QCD. We employ novel computational techniques and the variational method with a large basis of carefully constructed operators in…

高能物理 - 唯象学 · 物理学 2013-05-17 Graham Moir , Michael Peardon , Sinead M. Ryan , Christopher E. Thomas , Liuming Liu

A concise review of the progress of lattice calculations at non-zero density since QM2006 is given, with emphasis on the high baryon density, low temperature domain. Possibilities for exploring densities higher than those studied by…

高能物理 - 格点 · 物理学 2008-11-26 M. P. Lombardo

Bottomonium S-wave states were studied using lattice NRQCD. Masses of ground and excited states were calculated using multiexponential fitting to a set of correlation functions constructed using both local and wavefunction-smeared…

高能物理 - 格点 · 物理学 2011-11-15 Randy Lewis , R. M. Woloshyn

In this study, we employ a modified soft-wall holographic model with four flavors to investigate the meson spectra, decay constants, electromagnetic form factors, and charge radius of various mesons. We obtain the spectra for vector, axial…

高能物理 - 唯象学 · 物理学 2023-08-30 Hiwa A. Ahmed , Yidian Chen , Mei Huang

QCD at finite density presents specific challenges to lattice gauge theory. Nonetheless, a region of the QCD phase diagram up to moderately large baryon chemical potentials has been successfully explored on the lattice and new results and…

高能物理 - 格点 · 物理学 2008-11-26 M. -P. Lombardo

We briefly discuss the current status of lattice QCD simulations and review selective results on nucleon observables focusing on recent developments in the lattice QCD evaluation of the nucleon form factors and radii, parton distribution…

高能物理 - 格点 · 物理学 2017-04-05 Constantia Alexandrou

This document outlines major directions in theoretical support for the measurement of nucleon resonance transition form factors at the JLab 12 GeV upgrade with the CLAS12 detector. Using single and double meson production, prominent…

I examine the past lattice QCD calculations of three representative observables, the transverse quark distribution, momentum fraction, and axial charge, and emphasize the prospects for not only quantitative comparison with experiment but…

高能物理 - 格点 · 物理学 2009-11-11 Dru B. Renner

The contribution of the strange-quark current to the electromagnetic form factors of the nucleon is studied using lattice QCD. The strange current matrix elements from our lattice calculation are analyzed in two different ways, the…

高能物理 - 唯象学 · 物理学 2017-08-23 R. Lewis , W. Wilcox , R. M. Woloshyn

We report on the extraction of an excited spectrum of isoscalar mesons using lattice QCD. Calculations on several lattice volumes are performed with a range of light quark masses corresponding to pion masses down to about 400 MeV. The…

高能物理 - 格点 · 物理学 2013-11-22 Jozef J. Dudek , Robert G. Edwards , Peng Guo , Christopher E. Thomas

Lattice QCD calculations of baryon forces are performed for the first time with (almost) physical quark masses. $N_f = 2+1$ dynamical clover fermion gauge configurations are generated at the lattice spacing of $a \simeq 0.085$ fm on a $(96…

This document is one of a series of whitepapers from the USQCD collaboration. Here, we discuss opportunities for lattice QCD in neutrino-oscillation physics, which inevitably entails nucleon and nuclear structure. In addition to discussing…

The complex patterns of the hadronic spectrum have puzzled physicists since the early discovery of the "particle zoo" in the 1960s. Today, the properties of these myriad particles are understood to be the result of quantum chromodynamics…

高能物理 - 格点 · 物理学 2011-11-23 Huey-Wen Lin