Simple and statistically sound recommendations for analysing physical theories

AbdusSalam, Shehu S.; Agocs, F. J.; Allanach, B. C.; Athron, Peter; Balázs, Csaba; Bagnaschi, Emanuele; Bechtle, P.; Buchmueller, O. L.; Beniwal, Ankit; Bhom, J.; Bloor, Sanjay; Bringmann, Torsten; Buckley, A. G.; Butter, Anja; Camargo-Molina, José Eliel; Chrząszcz, M.; Conrad, J.; Cornell, Jonathan M.; Danninger, M.; Blas, Jorge de; Roeck, A. De; Desch, K.; Dolan, Matthew J.; Dreiner, Herbert K.; Eberhardt, Otto; Ellis, John; Farmer, Ben; Fedele, Marco; Flächer, H.; Fowlie, Andrew; Gonzalo, Tomás E.; Grace, P.; Hamer, M.; Handley, Will; Harz, Julia; Heinemeyer, S.; Hoof, Sebastian; Hotinli, Selim C.; Jackson, P.; Kahlhoefer, Felix; Kowalska, Kamila; Krämer, M.; Kvellestad, Anders; Martínez, M. Lucio; Mahmoudi, F.; Santos, D. Martínez; Martinez, Gregory D.; Mishima, Satoshi; Olive, Keith A.; Paul, Ayan; Prim, M. T.; Porod, W.; Raklev, Are; Renk, Janina J.; Rogan, C.; Roszkowski, Leszek; Austri, Roberto Ruiz de; Sakurai, Kazuki; Scaffidi, Andre; Scott, Pat; Sessolo, Enrico Maria; Stefaniak, Tim; Stöcker, Patrick; Su, Wei; Trojanowski, Sebastian; Trotta, Roberto; Tsai, Yue-Lin Sming; Abeele, Jeriek Van den; Valli, Mauro; Vincent, Aaron C.; Weiglein, G.; Wienemann, P.; Wu, Lei; Zhang, Yang

doi:10.1088/1361-6633/ac60ac

Cited by 15 publications

(6 citation statements)

References 96 publications

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“…In this section we perform a global analysis of our model with three generations of the Φ 2 leptoquark. For this we construct full likelihood functions for the LQ parameters whenever possible [245]. Implementing the formulas of section 3, we use for the numerical analysis the software packages flavio [179] and smelli [196].…”

Section: Phenomenological Analysismentioning

confidence: 99%

Explaining the hints for lepton flavour universality violation with three S2 leptoquark generations

Crivellin

Fuks

Schnell

2022

J. High Energ. Phys.

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Leptoquarks are prime candidates for explaining the intriguing hints for lepton flavour universality violation. In particular, the SU(2)L doublet of scalar leptoquarks S2 is capable of providing an explanation for the tensions between the measurements and the Standard Model predictions in (g − 2)μ, b → sℓ+ℓ− and b → cτν processes, as well as in non-resonant di-electron production. However, in the minimal setup with a single leptoquark generation, a common explanation for all these issues is not possible as this would lead to unacceptably large charged lepton flavour violation. We therefore propose a model with three generations of S2, each coupling exclusively to a single lepton flavour, i.e. a model extending the Standard Model particle content by an electroquark, a muoquark and a tauquark. We show that after taking into account other constraints, such as those originating from electroweak precision observables and ∆F = 2 processes, it is possible to provide a combined explanation for all these hints of lepton flavour universality violation. Moreover, we find that the presence of the tauquark can generate a dimension-six $$ {\mathcal{O}}_9^U $$ O 9 U operator via off-shell photon penguin diagrams, which, together with the muoquark contribution, further improves the global fit to b → sℓ+ℓ− data.

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Section: Phenomenological Analysismentioning

confidence: 99%

Explaining the hints for lepton flavour universality violation with three S2 leptoquark generations

Crivellin

Fuks

Schnell

2022

J. High Energ. Phys.

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“…The 90% CL spin-independent limits of Xenon1T for DM direct detection and 95% CL limits from HiggsBounds are also applied. As a result, the overall confidence level of the displayed points are stricter than 2σ level [73]. The horizontal and vertical solid, dashed and dot-dashed lines indicate the current central value, 1σ limits and 2σ limits of the corresponding observable.…”

Section: Resultsmentioning

confidence: 94%

Low energy SUSY confronted with new measurements of W-boson mass and muon g-2

Yang,

Zhang

2022

Preprint

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The new CDF II measurement of W -boson mass shows a 7σ deviation from the Standard Model (SM) prediction, while the recent FNAL measurement of the muon g − 2 shows a 4.2σ deviation (combined with the BNL result) from the SM. Both of them strongly indicate new physics beyond the SM. In this work we study the implication of both measurements on low energy supersymmetry. With an extensive exploration of the parameter space of the minimal supersymmetric standard model (MSSM), we find that in the parameter space allowed by current experimental constraints from colliders and dark matter detections, the MSSM can simultaneously explain both measurements at 2σ level. The favored parameter space, characterized by a compressed spectrum between bino, wino and stau, with the stop being around 1 TeV, may be covered in the near future LHC searches.

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“…In particular, we will combine observational data with theoretical constraints-from perturbative unitarity-and it is clearly unreasonable to combine them statistically. In our applications, in order to build a new class of search algorithm capable of using the latest versions of the relevant codes we shall take our classification based on simple criteria and consider a point to be "bad" if it fails the test for one observable; this has been argued to be a poor choice for global scans [57] but is at least unambiguous and easy to implement, and should be a good approximation for the cases we are interested in.…”

Section: Active Learning With a Neural Networkmentioning

confidence: 99%

Active learning BSM parameter spaces

Goodsell

Ari

2023

Eur. Phys. J. C

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Active learning (AL) has interesting features for parameter scans of new models. We show on a variety of models that AL scans bring large efficiency gains to the traditionally tedious work of finding boundaries for BSM models. In the MSSM, this approach produces more accurate bounds. In light of our prior publication, we further refine the exploration of the parameter space of the SMSQQ model, and update the maximum mass of a dark matter singlet to 48.4 TeV. Finally we show that this technique is especially useful in more complex models like the MDGSSM.

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Simple and statistically sound recommendations for analysing physical theories

Cited by 15 publications

References 96 publications

Explaining the hints for lepton flavour universality violation with three S2 leptoquark generations

Explaining the hints for lepton flavour universality violation with three S2 leptoquark generations

Low energy SUSY confronted with new measurements of W-boson mass and muon g-2

Active learning BSM parameter spaces

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