Electromagnetic contribution to Σ-Λ mixing using lattice QCD+QED

Autor: Kordov, Z. R., Horsley, R., Nakamura, Y., Perlt, H., Rakow, P. E. L., Schierholz, Gerrit, Stüben, H., Young, R. D., Zanotti, J. M.

Publikováno v: Kordov, Z R, Horsley, R, Nakamura, Y, Perlt, H, Rakow, P E L, Schierholz, G, Stüben, H, Young, R D & Zanotti, J M 2020, ' Electromagnetic contribution to Σ-Λ mixing using lattice QCD+QED ', Physical Review D-Particles, Fields, Gravitation and Cosmology, vol. 101, no. 3, 034517 . https://doi.org/10.1103/PhysRevD.101.034517
Physical Review
Physical review / D 101(3), 034517 (2020). doi:10.1103/PhysRevD.101.034517

Mixing in the Σ0–Λ0 system is a direct consequence of broken isospin symmetry and is a measure of both isospin-symmetry breaking as well as general SU(3)-flavor symmetry breaking. In this work we present a new scheme for calculating the extent of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::b0d92054830cf06fd22a58811e2143c0
https://www.pure.ed.ac.uk/ws/files/133719924/1911.02186.pdf

Erratum to: Symanzik improvement with dynamical charm: a 3+1 scheme for Wilson quarks

Autor: Fritzsch, Patrick, Sommer, Rainer, Stollenwerk, Felix, Wolff, Ulli, ALPHA Collaboration

Publikováno v: Journal of high energy physics 2020(10), 165 (1-2) (2020). doi:10.1007/JHEP10(2020)165
Journal of High Energy Physics, Vol 2020, Iss 10, Pp 1-2 (2020)
Journal of High Energy Physics

Journal of high energy physics 2020(10), 165 (1-2) (2020). doi:10.1007/JHEP10(2020)165
We discuss the problem of lattice artefacts in QCD simulations enhanced by the introduction of dynamical charmed quarks. In particular, we advocate the use of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b65fc21ab53580e580b7e220a7252280
https://bib-pubdb1.desy.de/record/453985

Isospin splittings in the decuplet baryon spectrum from dynamical QCD + QED

Autor: Roger Horsley, Ross D. Young, Dirk Pleiter, Yoshifumi Nakamura, James Zanotti, Z. Koumi, H. Stüben, Holger Perlt, Gerrit Schierholz, Paul E.L. Rakow, Arwed Schiller

Publikováno v: Journal of physics / G G, Nuclear and particle physics 46(11), 115004-(2019). doi:10.1088/1361-6471/ab32c1
Horsley, R, Koumi, Z, Nakamura, Y, Perlt, H, Pleiter, D, Rakow, P E L, Schierholz, G, Schiller, A, Stüben, H, Young, R D & Zanotti, J M 2019, ' Isospin splittings in the decuplet baryon spectrum from dynamical QCD+QED ', Journal of Physics G: Nuclear and Particle Physics . https://doi.org/10.1088/1361-6471/ab32c1
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
Journal of physics / G 46(11), 115004-(2019). doi:10.1088/1361-6471/ab32c1

We report a new analysis of the isospin splittings within the decuplet baryon spectrum. Our numerical results are based upon five ensembles of dynamical QCD+QED lattices. The analysis is carried out within a flavour-breaking expansion which encodes t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b5e39e20143051d7a4eaa58322fd361
https://hdl.handle.net/2128/23946

The hadronic contribution to the running of the electromagnetic coupling and the electroweak mixing angle

Autor: Marco Cè, Kohtaroh Miura, Hartmut Wittig, Antoine Gérardin, Teseo San José, Konstantin Ottnad, Jonas Wilhelm, Harvey B. Meyer, Andreas Risch

Publikováno v: PoS(LATTICE 2019)010 (2019). doi:10.3204/PUBDB-2020-00032
37th International Symposium on Lattice Field Theory, Wuhan, China, 2019-06-16-2019-06-22
Scopus-Elsevier

37th International Symposium on Lattice Field Theory, Wuhan, China, 16 Jun 2019 - 22 Jun 2019; PoS(LATTICE 2019)010 (2019).
The electromagnetic coupling $\alpha$ and the electroweak mixing angle $\theta_{\mathrm{W}}$ are parameters of the Standa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eeaa6d2cee6c70995f50b94636836dd3

A novel approach to nonperturbative renormalization of singlet and nonsinglet lattice operators

Autor: Chambers, A. J., Horsley, R., Nakamura, Y., Perlt, H., Rakow, P. E. L., Schierholz, G., Schiller, A., Zanotti, J. M., QCDSF Collaboration

Publikováno v: Physics letters / B 740, 30-35 (2015). doi:10.1016/j.physletb.2014.11.033
Physics Letters B
Physics Letters B, Vol 740, Iss, Pp 30-35 (2015)

A novel method for nonperturbative renormalization of lattice operators is introduced, which lends itself to the calculation of renormalization factors for nonsinglet as well as singlet operators. The method is based on the Feynman-Hellmann relation,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::378db521866896ed3022ce1bcb376667
https://doi.org/10.1016/j.physletb.2014.11.033