Moments of nucleon generalized parton distributions from lattice QCD simulations at physical pion mass

Autor: Constantia Alexandrou, Simone Bacchio, Karl Jansen, Martha Constantinou, R. Frezzotti, Jacob Finkenrath, Carsten Urbach, Bartosz Kostrzewa, C. Lauer, Petros Dimopoulos, Kyriakos Hadjiyiannakou, Giannis Koutsou

Publikováno v: Physical Review D
Physical review / D 101(3), 034519 (2020). doi:10.1103/PhysRevD.101.034519
Physical Review

We present results for the moments of nucleon isovector vector and axial generalised parton distribution functions computed within lattice QCD. Three ensembles of maximally twisted mass clover-improved fermions simulated with a physical value of the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9ef9caa9e1b8fd537094357a2043268f

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

Extraction of bare form factors for Bs →Kℓν decays in nonperturbative HQET

Autor: Rainer Sommer, Mateusz Koren, Hubert Simma, Fabio Bernardoni, Debasish Banerjee, Felix Bahr

Publikováno v: International journal of modern physics / A 34(28), 1950166-(2019). doi:10.1142/S0217751X19501665

We discuss the extraction of the ground state $\langle \mathrm{K} ({\bf p})|V_\mu(0)|\mathrm{B} ({\bf 0})\rangle$ matrix elements from Euclidean lattice correlation functions. The emphasis is on the elimination of excited state contributions. Two typ

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::245d6be89c6926ef5f0ab49a29e8eb6b
https://doi.org/10.1142/s0217751x19501665

Disconnected hadronic contribution to the muon magnetic moment at the physical point

Autor: Christian Torrero, L. Lellouch, Stefan Krieg, Kalman K. Szabo, Rehan Malak, Z. Fodor, Sz. Borsanyi, Kohtaroh Miura, B. C. Thot, T. Kawanai

Publikováno v: PoS
34th International Symposium on Lattice Field Theory
34th International Symposium on Lattice Field Theory, Jul 2016, Southampton, United Kingdom. pp.171, ⟨10.22323/1.256.0171⟩
Proceedings of Science LATTICE 2016, 171 (2017).
34th International Symposium on Lattice Field Theory, Southampton, UK, 2016-07-24-2016-07-30

International audience; We compute the slope and curvature, at vanishing four-momentum transfer squared, of the disconnected contribution of the leading order hadron vacuum polarization function, using lattice QCD. Calculations are performed with 2 +

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::930637fbeb609f60f67b41f006ab60b8
https://hal.archives-ouvertes.fr/hal-01554500

Static $ \overline{\mathrm{Q}}\mathrm{Q} $ pair free energy and screening masses from correlators of Polyakov loops: continuum extrapolated lattice results at the QCD physical point

Autor: Kalman K. Szabo, Attila Pásztor, Csaba Török, Sandor D. Katz, Szabolcs Borsanyi, Zoltan Fodor

Publikováno v: Journal of high energy physics 1504(4), 138 (2015). doi:10.1007/JHEP04(2015)138
Journal of High Energy Physics

We study the correlators of Polyakov loops, and the corresponding gauge invariant free energy of a static quark-antiquark pair in 2+1 flavor QCD at finite temperature. Our simulations were carried out on N t = 6 , 8 , 10 , 12 , 16 lattices using a Sy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82bcd3d0ec65c8ca7f5b88f4323a6904
https://hdl.handle.net/2128/9740