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1.
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A non-perturbative determination of $b_{\rm g}$
/ Dalla Brida, Mattia (CERN) ; Knechtli, Francesco (Wuppertal U.) ; Korzec, Tomasz (Wuppertal U.) ; Ramos, Alberto (Valencia U., IFIC) ; Sint, Stefan (TCD, Dublin) ; Sommer, Rainer (Julich, NIC ; DESY ; Humboldt U., Berlin) ; Höllwieser, Roman (Wuppertal U.)
Close to the continuum limit, lattice QCD with mass-degenerate Wilson quarks can be described by Symanzik's effective continuum action, which contains the dimension 5 operator, $m\,{\rm tr}(F_{\mu\nu}F_{\mu\nu})$. Its effect can be eliminated by an O($am_{\rm q}$) rescaling of the bare lattice coupling constant. [...]
arXiv:2401.05791; CERN–TH–2024–004.-
2024-05-02 - 8 p.
- Published in : PoS: LATTICE2023 (2024) , pp. 295
Fulltext: document - PDF; 2401.05791 - PDF;
In : 40th International Symposium on Lattice Field Theory (Lattice 2023), Fermilab, Batavia, IL, United States, 30 Jul - 5 Aug 2023, pp.295
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2.
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Exploiting Differentiable Programming for the End-to-end Optimization of Detectors
/ MODE Collaboration
The coming of age of differentiable programming makes possible today to create complete
computer models of experimental apparatus that include the stochastic data-generation processes, the full modeling of the reconstruction and inference procedures, and a suitably defined
objective function, along with the cost of any given detector configuration, geometry and materials. [...]
2022. - 8 p.
Fulltext
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3.
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50 Years of Quantum Chromodynamics
/ Gross, Franz (Jefferson Lab ; William-Mary Coll.) ; Klempt, Eberhard (Bonn U., HISKP) ; Brodsky, Stanley J. (SLAC) ; Buras, Andrzej J. (TUM-IAS, Munich) ; Burkert, Volker D. (Jefferson Lab) ; Heinrich, Gudrun (KIT, Karlsruhe, TP) ; Jakobs, Karl (Freiburg U.) ; Meyer, Curtis A. (Carnegie Mellon U.) ; Orginos, Kostas (Jefferson Lab ; William-Mary Coll.) ; Strickland, Michael (Kent State U.) et al.
This paper presents a comprehensive review of both the theory and experimental successes of Quantum Chromodynamics, starting with its emergence as a well defined theory in 1972-73 and following developments and results up to the present day. Topics include a review of the earliest theoretical and experimental foundations; the fundamental constants of QCD; an introductory discussion of lattice QCD, the only known method for obtaining exact predictions from QCD; methods for approximating QCD, with special focus on effective field theories; QCD under extreme conditions; measurements and predictions of meson and baryon states; a special discussion of the structure of the nucleon; techniques for study of QCD at high energy, including treatment of jets and showers; measurements at colliders; weak decays and quark mixing; and a section on the future, which discusses new experimental facilities or upgrades currently funded. [...]
arXiv:2212.11107.-
2023-12 - 636 p.
- Published in : Eur. Phys. J. C 83 (2023) 1125
Fulltext: 2212.11107 - PDF; Publication - PDF; External link: JLAB Document Server
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4.
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Determination of $\alpha _s(m_Z)$ by the non-perturbative decoupling method
/ Dalla Brida, Mattia (CERN) ; Höllwieser, Roman (Wuppertal U.) ; Knechtli, Francesco (Wuppertal U.) ; Korzec, Tomasz (Wuppertal U.) ; Nada, Alessandro (Turin U.) ; Ramos, Alberto (Valencia U., IFIC) ; Sint, Stefan (Hamilton Math. Inst., Dublin) ; Sommer, Rainer (Humboldt U., Berlin ; DESY)
/ALPHA Collaboration
We present the details and first results of a new strategy for the determination of $\alpha_s(m_Z)$. By simultaneously decoupling 3 fictitious heavy quarks we establish a relation between the $\Lambda$-parameters of three-flavor QCD and pure gauge theory. [...]
arXiv:2209.14204; IFIC/22-25; WUB/22-00; DESY-22-051; CERN-TH-2022-015; HU-EP-22/04.-
2022-12-03 - 62 p.
- Published in : Eur. Phys. J. C 82 (2022) 1092
Fulltext: 2209.14204 - PDF; Publication - PDF;
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5.
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Toward the end-to-end optimization of particle physics instruments with differentiable programming
/ MODE Collaboration
The full optimization of the design and operation of instruments whose functioning relies on the interaction of radiation with matter is a super-human task, given the large dimensionality of the space of possible choices for geometry, detection technology, materials, data-acquisition, and information-extraction techniques, and the interdependence of the related parameters. On the other hand, massive potential gains in performance over standard, "experience-driven" layouts are in principle within our reach if an objective function fully aligned with the final goals of the instrument is maximized by means of a systematic search of the configuration space. [...]
arXiv:2203.13818.-
2023-05-25 - 56 p.
- Published in : Rev. Phys. 10 (2023) 100085
Fulltext: 2203.13818 - PDF; Publication - PDF;
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6.
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Results for $\alpha_s$ from the decoupling strategy
/ Brida, Mattia Dalla (CERN) ; Höllwieser, Roman (Wuppertal U.) ; Knechtli, Francesco (Wuppertal U.) ; Korzec, Tomasz (Wuppertal U.) ; Nada, Alessandro (NIC, Zeuthen) ; Ramos, Alberto (Valencia U., IFIC) ; Sint, Stefan (Trinity Coll., Dublin) ; Sommer, Rainer (NIC, Zeuthen ; Humboldt U., Berlin)
/ALPHA Collaboration
We present analysis details and new results for the strong coupling $\alpha_s(m_Z)$, determined by the decoupling strategy. We measure a massive gradient flow (GF) coupling defined in finite volume with Schrödinger functional (SF) boundary conditions in a theory with $N_\text{f}=3$ degenerate heavy quarks of mass $M$. [...]
arXiv:2112.09623.-
2022-05-16 - 10 p.
- Published in : PoS: LATTICE2021 (2022) , pp. 492
Fulltext: 2112.09623 - PDF; document - PDF;
In : 38th International Symposium on Lattice Field Theory, Online, 26 - 30 Jul 2021, pp.492
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7.
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Light quark masses in N_f = 2+1 lattice QCD with Wilson fermions
/ Bruno, Mattia (CERN) ; Campos, Isabel (Cantabria Inst. of Phys.) ; Fritzsch, Patrick (CERN) ; Koponen, Jonna (KEK, Tsukuba) ; Pena, Carlos (Madrid, Autonoma U. ; Madrid, IFT) ; Preti, David (INFN, Turin) ; Ramos, Alberto (Trinity Coll., Dublin) ; Vladikas, Anastassios (INFN, Rome2)
/ALPHA Collaboration
We present a lattice QCD determination of light quark masses with three sea-quark flavours ($N_f = 2+1$). Bare quark masses are known from PCAC relations in the framework of CLS lattice computations with a non-perturbatively improved Wilson-Clover action and a tree-level Symanzik improved gauge action. [...]
arXiv:1911.08025; CERN-TH-2019-174; IFT-UAM/CSIC-19-151; KEK-CP-372.-
2020-02-22 - 18 p.
- Published in : Eur. Phys. J. C
Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; External link: Published fulltext
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8.
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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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9.
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Light and strange quark masses from $N_f=2+1$ simulations with Wilson fermions
/ Bruno, M. (CERN) ; Campos, I. (Cantabria Inst. of Phys.) ; Koponen, J. (INFN, Rome2) ; Pena, Carlos (Madrid, Autonoma U.) ; Preti, David (INFN, Turin) ; Ramos, Alberto (Trinity Coll., Dublin) ; Vladikas, Anastassios (INFN, Rome2)
/ALPHA Collaboration
We present a nearly final analysis of the $u/d$ and $s$ quark masses, extracted using the PCAC quark masses reported in [PRD 95 (2017) 074504]. The data is based on the CLS $N_f = 2 + 1$ simulations with Wilson/Clover quarks and L\"uscher-Weisz gauge action, at four $\beta$ values (i.e. [...]
arXiv:1903.04094.-
SISSA, 2019-03-06 - 7 p.
- Published in : PoS LATTICE2018 (2019) 220
Fulltext: PoS(LATTICE2018)220 - PDF; 1903.04094 - PDF;
In : 36th International Symposium on Lattice Field Theory, East Lansing, MI, USA, 22 - 28 Jul 2018, pp.220
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10.
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A non-perturbative exploration of the high energy regime in $N_\text{f}=3$ QCD
/ Dalla Brida, Mattia (INFN, Milan Bicocca ; Milan Bicocca U.) ; Fritzsch, Patrick (CERN) ; Korzec, Tomasz (Wuppertal U.) ; Ramos, Alberto (Hamilton Math. Inst., Dublin) ; Sint, Stefan (Hamilton Math. Inst., Dublin) ; Sommer, Rainer (NIC, Zeuthen ; Humboldt U., Berlin)
/ALPHA Collaboration
Using continuum extrapolated lattice data we trace a family of running couplings in three-flavour QCD over a large range of scales from about 4 to 128 GeV. The scale is set by the finite space time volume so that recursive finite size techniques can be applied, and Schr\"odinger functional (SF) boundary conditions enable direct simulations in the chiral limit. [...]
arXiv:1803.10230; CERN-TH-2018-060; DESY 18-044; WUB/18-01; DESY-18-044; WUB-18-01.-
2018-05-10 - 40 p.
- Published in : Eur. Phys. J. C 78 (2018) 372
Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;
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