2024-10-17
17:27 |
Basis for Anomalous Quartic Gauge Couplings
/ Durieux, Gauthier (Louvain U., CP3) ; Remmen, Grant N. (New York U., CCPP) ; Rodd, Nicholas L. (LBL, Berkeley ; UC, Berkeley) ; Éboli, O.J.P. (Sao Paulo U.) ; Gonzalez-Garcia, M.C. (YITP, Stony Brook ; ICREA, Barcelona ; Barcelona, Autonoma U.) ; Kondo, Dan (Tokyo U., IPMU ; Tokyo U., ICRR) ; Murayama, Hitoshi (LBL, Berkeley ; UC, Berkeley ; Tokyo U., IPMU ; Tokyo U., ICRR) ; Okabe, Risshin (Tokyo U., IPMU ; Tokyo U., ICRR)
In this note, we give a definitive basis for the dimension-eight operators leading to quartic - but no cubic - interactions among electroweak gauge bosons. These are often called anomalous quartic gauge couplings, or aQGCs. [...]
CERN-LHCEFTWG-2024-002; CERN-LPCC-2024-002; arXiv:2411.02483.-
Geneva : CERN, 2024 - 8 p.
Fulltext: CERN-LHCEFTWG-2024-002 - PDF; 2411.02483 - PDF; arXiv v1: PDF;
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2024-04-17
19:10 |
LHC EFT WG Note: SMEFT predictions, event reweighting, and simulation
/ Schoefbeck, Robert (Austrian Academy of Sciences (AT)) ; Belvedere, Alberto (Deutsches Elektronen-Synchrotron (DE)) ; Bhattacharya, Saptaparna (Wayne State University (US)) ; Chatterjee, Suman (Austrian Academy of Sciences (AT)) ; Calandri, Alessandro (ETH Zurich (CH)) ; Sanchez Cruz, Sergio (CERN) ; Dickinson, Jennet Elizabeth (Fermi National Accelerator Lab. (US)) ; Glessgen, Franz Jacob (ETH Zurich (CH)) ; Goldouzian, Reza (University of Notre Dame (US)) ; Grohsjean, Alexander (Hamburg University (DE)) et al.
This note gives an overview of the tools for predicting expectations in the Standard Model effective field theory (SMEFT) at the tree level and one loop available through event generators. Methods of event reweighting, the separate simulation of squared matrix elements, and the simulation of the full SMEFT process are compared in terms of statistical efficacy and potential biases..
arXiv:2406.14620; CERN-LHCEFTWG-2024-001; CERN-LPCC-2024-001.-
Geneva : CERN, 2024 - 42 p.
Fulltext: da0a86c213c0c72b823f69c0b79b403b - PDF; 2406.14620 - PDF; Updated draft: PDF; External link: Fermilab Library Server
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2022-11-25
12:29 |
Precision matching of microscopic physics to the Standard Model Effective Field Theory (SMEFT)
/ Greljo, Admir (Universitaet Bern (CH)) ; Dawson, Sally (Department of Physics, Brookhaven National Laboratory (US)) ; Lohwasser, Kristin (University of Sheffield (GB)) ; Aebischer, Jason (Universität Zürich (CH)) ; Das Bakshi, Supratim (Universidad de Granada (ES)) ; Carmona, Adrían (Universidad de Granada (ES)) ; Chakrabortty, Joydeep (Indian Institute of Technology Kanpur (IN)) ; Cohen, Timothy (University of Oregon (US)) ; Criado, Juan Carlos (Durham University (UK)) ; Fuentes-Martín, Javier (Universidad de Granada (ES)) et al.
This note gives an overview of the tools for the precision matching of ultraviolet theories to the Standard Model effective field theory (SMEFT) at the tree level and one loop. Several semi- and fully automated codes are presented, as well as some supplementary codes for the basis conversion and the subsequent running and matching at low energies. [...]
arXiv:2212.02905; CERN-LHCEFTWG-2022-002; CERN-LPCC-2022-07.-
Geneva : CERN, 2022 - 23 p.
Fulltext: CERN-LHCEFTWG-2022-002 - PDF; 2212.02905 - PDF;
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2022-07-08
00:39 |
Towards a combination of LHC and TeVatron W-boson mass measurements
In this note methodological and modelling considerations towards a combination of the ATLAS, CDF and D0 measurements of the 𝑊-boson mass are discussed. As they were performed at different moments in time, each measurement employed different assumptions for the modelling of 𝑊-boson production and decay, as well as different fits of the parton distribution functions of the proton (PDFs). [...]
CERN-LPCC-2022-06; FERMILAB-TM-2779-V.-
2022 - 48 p.
Fulltext: PDF;
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2022-05-24
09:48 |
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2022-05-14
00:11 |
LHC EFT WG Report: Experimental Measurements and Observables
/ Castro, Nuno (LIP - Laboratorio de Instrumentação e Física Experimental de Partículas (PT)) ; Cranmer, Kyle Stuart (New York University (US)) ; Gritsan, Andrei (Johns Hopkins University (US)) ; Howarth, James William (University of Glasgow (GB)) ; Magni, Giacomo (Nikhef) ; Mimasu, Ken (King's College London) ; Rojo Chacon, Juan (CERN) ; Roskes, Jeffrey (Johns Hopkins University (US)) ; Vryonidou, Eleni (University of Manchester (GB)) ; You, Tiann-Tevong (CERN)
The LHC effective field theory working group gathers members of the LHC experiments and the theory community to provide a framework for the interpretation of LHC data in the context of EFT. In this note we discuss experimental observables and corresponding measurements in analysis of the Higgs, top, and electroweak data at the LHC [...]
arXiv:2211.08353; CERN-LHCEFTWG-2022-001; CERN-LPCC-2022-05.-
Geneva : CERN, 2022 - 55 p.
53 pages, 17 figures: PDF; Fulltext: PDF;
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2021-12-14
21:41 |
Truncation, validity, uncertainties
/ Brivio, Ilaria (Heidelberg U. ; Zurich U.) ; Dawson, Sally (Brookhaven) ; de Blas, Jorge (CAFPE, Granada ; Granada U., Theor. Phys. Astrophys. ; CERN) ; Durieux, Gauthier (CERN) ; Petrucciani, Giovanni (CERN) ; Savard, Pierre (Toronto U.) ; Berger, Nicolas (Annecy, LAPP) ; Contino, Roberto (Rome U.) ; Degrande, Céline (Louvain U., CP3) ; Falkowski, Adam (IJCLab, Orsay) et al.
The truncation of the standard-model effective field theory, its validity and the associated uncertainties have been discussed in meetings of the LHC EFT WG. Proposals were made by participants to address these issues. [...]
CERN-LHCEFTWG-2021-002; CERN-LPCC-2022-01; arXiv:2201.04974.-
21 - 8 p.
Fulltext: PDF; v2 draft: PDF;
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2021-12-08
11:07 |
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Electroweak input parameters
/ Brivio, Ilaria (Heidelberg U.) ; Dawson, Sally (Brookhaven) ; De Blas Mateo, Jorge (Universidad de Granada (ES)) ; Durieux, Gauthier (CERN) ; Savard, Pierre (University of Toronto (CA)) ; Denner, Ansgar (Julius Max. Universitaet Wuerzburg (DE)) ; Freitas, Ayres (Pittsbugh U.) ; Hays, Chris (University of Oxford (GB)) ; Pecjack, Ben (Durham U., IPPP) ; Vicini, Alessandro (Università degli Studi e INFN Milano (IT))
Different sets of electroweak input parameters are discussed for SMEFT predictions at the LHC. [...]
arXiv:2111.12515 ; CERN-LPCC-2021-002 ; CERN-LHCEFTWG-2021-001.
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2021. - 7 p.
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2021-10-31
09:43 |
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Review of opportunities for new long-lived particle triggers in Run 3 of the Large Hadron Collider
/ Alimena, Juliette (ed.) (CERN) ; Beacham, James (ed.) (Duke U. (main)) ; Blekman, Freya (ed.) (DESY) ; Vidal, Adrián Casais (ed.) (Santiago de Compostela U., IGFAE) ; Vidal, Xabier Cid (ed.) (Santiago de Compostela U., IGFAE) ; Citron, Matthew (ed.) (UC, Santa Barbara (main)) ; Curtin, David (ed.) (U. Toronto (main)) ; De Roeck, Albert (ed.) (CERN) ; Desai, Nishita (ed.) (Tata Inst.) ; Di Petrillo, Karri Folan (ed.) (Fermilab) et al.
Long-lived particles (LLPs) are highly motivated signals of physics Beyond the Standard Model (BSM) with great discovery potential and unique experimental challenges. [...]
arXiv:2110.14675 ; CERN-LPCC-2021-01.
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2020-05-01
04:55 |
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