scholarly journals Entanglement minimization in hadronic scattering with pions

2021 ◽  
Author(s):  
Silas R. Beane ◽  
Roland C. Farrell ◽  
Mira Varma
Keyword(s):  
Lattice Qcd ◽  
Recent Work ◽  
High Precision ◽  
Low Energy ◽  
Flavor Symmetries

Recent work [S. R. Beane, D. B. Kaplan, N. Klco and M. J. Savage, Phys. Rev. Lett. 122, 102001 (2019), arXiv:1812.03138.] conjectured that entanglement is minimized in low-energy hadronic scattering processes. It was shown that the minimization of the entanglement power (EP) of the low-energy baryon–baryon [Formula: see text]-matrix implies novel spin–flavor symmetries that are distinct from large-[Formula: see text] QCD predictions and are confirmed by high-precision lattice QCD simulations. Here, the conjecture of minimal entanglement is investigated for scattering processes involving pions and nucleons. The EP of the [Formula: see text]-matrix is constructed for the [Formula: see text] and [Formula: see text] systems, and the consequences of minimization of entanglement are discussed and compared with large-[Formula: see text] QCD expectations.

Some Recent Work in Low Energy X-Ray and Electron Analysis

1969 ◽  
pp. 480-495 ◽  
Author(s):  
Burton L. Henke ◽  
Robert E. Lent
Keyword(s):  
Recent Work ◽  
Low Energy ◽  
X Ray

scholarly journals Dispersive analysis of the Primakoff reaction $$\gamma K \rightarrow K \pi $$

2021 ◽  
Vol 81 (3) ◽  
Author(s):  
Maximilian Dax ◽  
Dominik Stamen ◽  
Bastian Kubis
Keyword(s):  
Phase Shift ◽  
High Precision ◽  
Low Energy ◽  
Wave Phase ◽  
Dispersive Analysis ◽  
Model Independent

AbstractWe provide a dispersion-theoretical representation of the reaction amplitudes $$\gamma K\rightarrow K \pi $$ γ K → K π in all charge channels, based on modern pion–kaon P-wave phase shift input. Crossed-channel singularities are fixed from phenomenology as far as possible. We demonstrate how the subtraction constants can be matched to a low-energy theorem and radiative couplings of the $$K^*(892)$$ K ∗ ( 892 ) resonances, thereby providing a model-independent framework for future analyses of high-precision kaon Primakoff data.

scholarly journals Precision computation of a low-energy reference scale in quenched lattice QCD

1998 ◽  
Vol 535 (1-2) ◽  
pp. 389-402 ◽  
Author(s):  
Marco Guagnelli ◽  
Rainer Sommer ◽  
Hartmut Wittig
Keyword(s):  
Lattice Qcd ◽  
Low Energy ◽  
Reference Scale

scholarly journals Progress in resolving charge symmetry violation in nucleon structure

2014 ◽  
Vol 23 (07) ◽  
pp. 1461010
Author(s):  
R. D. Young ◽  
P. E. Shanahan ◽  
A. W. Thomas
Keyword(s):  
Lattice Qcd ◽  
Recent Work ◽  
Mass Difference ◽  
Baryon Octet ◽  
Nucleon Structure ◽  
Symmetry Violation ◽  
Charge Symmetry ◽  
Parton Distributions

Recent work unambiguously resolves the level of charge symmetry violation in moments of parton distributions using (2 + 1)-flavor lattice QCD. We introduce the methods used for that analysis by applying them to determine the strong contribution to the proton–neutron mass difference. We also summarize related work which reveals that the fraction of baryon spin which is carried by the quarks is in fact structure-dependent rather than universal across the baryon octet.

scholarly journals Hadron Spectrum from Lattice QCD

2006 ◽  
Vol 21 (04) ◽  
pp. 726-732
Author(s):  
AKIRA UKAWA
Keyword(s):  
Lattice Qcd ◽  
Recent Work ◽  
Hadron Spectrum ◽  
Strange Quarks ◽  
The Status ◽  
Near Term

A brief review is given of the lattice QCD calculation of the hadron spectrum. The status of current attempts toward inclusion of dynamical up, down and strange quarks is summarized focusing on our own work. Recent work on the possible existence of pentaquark states are assessed. We touch upon the PACS-CS Project for building our next machine for lattice QCD, and conclude with a near-term physics and machine prospects.

scholarly journals High-Precision Lattice QCD Confronts Experiment

2004 ◽  
Vol 92 (2) ◽  
Author(s):  
C. T. H. Davies ◽  
E. Follana ◽  
A. Gray ◽  
G. P. Lepage ◽  
Q. Mason ◽  
...  
Keyword(s):  
Lattice Qcd ◽  
High Precision
Sign in / Sign up

Export Citation Format

Share Document