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Non-perturbative renormalization in QCD+QED and its applications to weak decays
/ Di Carlo, Matteo (Rome U. ; INFN, Rome) ; Martinelli, Guido (Rome U. ; INFN, Rome) ; Giusti, Davide (Rome III U. ; INFM, Trieste) ; Lubicz, Vittorio (Rome III U. ; INFN, Rome3) ; Sachrajda, Christopher T. (Southampton U.) ; Sanfilippo, Francesco (INFN, Rome3) ; Simula, Silvano (INFN, Rome3) ; Tantalo, Nazario (Rome U., Tor Vergata ; INFN, Rome2)
We present a novel strategy to renormalize lattice operators in QCD+QED, including first order QED corrections to the non-perturbative evaluation of QCD renormalization constants. Our procedure takes systematically into account the mixed non-factorizable QCD+QED effects which were neglected in previous calculations, thus significantly reducing the systematic uncertainty on renormalization corrections. [...]
arXiv:1911.00938.-
SISSA, 2019-11-05 - 7 p.
- Published in : PoS LATTICE2019 (2019) 196
Fulltext: PDF; Fulltext from publisher: PDF;
In : 37th International Symposium on Lattice Field Theory, Wuhan, Hubei, China, 16 - 22 Jun 2019, pp.196
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The eikonal operator at arbitrary velocities I: the soft-radiation limit
/ Di Vecchia, Paolo (Bohr Inst. ; Nordita ; Stockholm U.) ; Heissenberg, Carlo (Nordita ; Stockholm U. ; Uppsala U.) ; Russo, Rodolfo (Queen Mary, U. of London) ; Veneziano, Gabriele (CERN ; College de France)
Observables related to the real part of the gravitational eikonal, such as the deflection angle and time delay, have been found so far to have a smooth post-Minkowskian (PM) expansion whose validity extends from the non-relativistic to the most extreme ultra-relativistic (UR) regime, which smoothly connects with massless particle collisions. To describe gravitational radiation, the eikonal phase has to be promoted to a unitary operator for which we motivate a proposal and start discussing properties in the soft-radiation limit. [...]
arXiv:2204.02378; CERN-TH-2022-058; NORDITA 2022-022; QMUL-PH-22-14; UUITP-20/22.-
2022-07-07 - 35 p.
- Published in : JHEP 2207 (2022) 039
Fulltext: document - PDF; 2204.02378 - PDF;
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Gauge invariant determination of charged hadron masses
/ Hansen, Martin (Southern Denmark U., CP3-Origins) ; Lucini, Biagio (Swansea U. (main)) ; Patella, Agostino (CERN ; Plymouth U.) ; Tantalo, Nazario (U. Rome 2, Tor Vergata (main) ; INFN, Rome2)
In this paper we show, for the first time, that charged-hadron masses can be calculated on the lattice without relying on gauge fixing at any stage of the calculations. In our simulations we follow a recent proposal and formulate full QCD+QED on a finite volume, without spoiling locality, by imposing C-periodic boundary conditions in the spatial directions. [...]
arXiv:1802.05474; CP3-Origins-2018-006; CERN-TH-2018-033; CP3-ORIGINS-2018-006.-
2018-05-23 - 17 p.
- Published in : JHEP 05 (2018) 146
Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;
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Matrix Elements with Vetoes in the CASCADE Monte Carlo Event Generator
/ Deak, Michal (Madrid, IFT ; Madrid, Autonoma U. ; Santiago de Compostela U.) ; Hautmann, Francesco (Oxford U., Theor. Phys.) ; Jung, Hannes (DESY ; CERN) ; Kutak, Krzysztof (Cracow, INP)
We illustrate a study based on a veto technique to match parton showers and matrix elements in the Cascade Monte Carlo event generator, and present a numerical application to gluon matrix elements for jet production..
arXiv:1206.1745.-
2012 - 4 p.
- Published in : 10.3204/DESY-PROC-2012-02/1
Fulltext: arXiv:1206.1745 - PDF; 1-deak_michal_2 - PDF; External link: Preprint
In : 20th International Workshop on Deep-Inelastic Scattering and Related Subjects, Bonn, Germany, 26 - 30 Mar 2012, pp.713-716
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openQ*D code: a versatile tool for QCD+QED simulations
/ Campos, Isabel (Cantabria Inst. of Phys.) ; Fritzsch, Patrick (CERN) ; Hansen, Martin (INFN, Rome) ; Marinkovic, Marina Krstic (TCD, Dublin) ; Patella, Agostino (Humboldt U., Berlin) ; Ramos, Alberto (TCD, Dublin) ; Tantalo, Nazario (Rome U., Tor Vergata ; INFN, Rome)
/RC* Collaboration
We present the open-source package openQ*D-1.0, which has been primarily, but not uniquely, designed to perform lattice simulations of QCD+QED and QCD, with and without C* boundary conditions, and O(a) improved Wilson fermions. The use of C* boundary conditions in the spatial direction allows for a local and gauge-invariant formulation of QCD+QED in finite volume, and provides a theoretically clean setup to calculate isospin-breaking and radiative corrections to hadronic observables from first principles. [...]
arXiv:1908.11673; CERN-TH-2019-136.-
2020-03-03 - 41 p.
- Published in : Eur. Phys. J. C 80 (2020) 195
Article from SCOAP3: 88551ccc8063f247b799c8063ae2ca02 - PDFPDFA; scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; External link: Article from SCOAP3
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Herwig++ 2.6 Release Note
/ Arnold, K. (KIT, Karlsruhe, TP) ; d'Errico, L. (KIT, Karlsruhe, TP ; Durham U., IPPP ; Durham U.) ; Gieseke, S. (KIT, Karlsruhe, TP) ; Grellscheid, D. (Durham U., IPPP ; Durham U.) ; Hamilton, K. (CERN) ; Papaefstathiou, A. (Zurich U.) ; Platzer, S. (DESY) ; Richardson, P. (Durham U., IPPP ; Durham U.) ; Rohr, C. (KIT, Karlsruhe, TP) ; Schofield, A. (Manchester U.) et al.
A new release of the Monte Carlo event generator Herwig++ (version 2.6) is now available. [...]
arXiv:1205.4902 ; IPPP-12-33 ; MCNET-12-05 ; CERN-PH-TH-2012-142 ; DCPT-12-66 ; DESY-12-076 ; KA-TP-20-2012 ; ZU-TH-06-12 ; IPPP-12-33 ; MCNET-12-05 ; CERN-PH-TH-2012-142 ; DCPT-12-66 ; DESY 12-076 ; KA-TP-20-2012 ; ZU-TH 06-12.
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2012. - 11 p.
Preprint - Full text
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