EOS: a software for flavor physics phenomenology

Dyk, Danny van; Beaujean, Frederik; Blake, T.; Bobeth, Christoph; Bordone, Marzia; Dugic, Katarina; Eberhard, Eike; Gubernari, Nico; Graverini, E.; Jung, Martin; Kokulu, Ahmet; Kürten, Stephan; Leljak, Domagoj; Philip, Lüghausen,; Meiser, Stefan; Rahimi, Muslem; Reboud, M.; Coutinho, R. Silva; Virto, Javier; Vos, Kimberley

doi:10.1140/epjc/s10052-022-10177-4

Cited by 36 publications

(18 citation statements)

References 85 publications

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“…All the numerical studies are performed using the version 1.0.4 of the EOS software [43,44]. We use EOS default values for the physical constants, which include the values in Table 3.1.…”

Section: Fit Resultsmentioning

confidence: 99%

Dispersive analysis of $\Lb \to Ł(1520)$ local form factors

Amhis¹,

Bordone²,

Reboud³

2022

Preprint

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We perform an analysis of Λ b → Λ(1520) local form factors. We use dispersive techniques to provide a model-independent parametrisation of the form factors that can be used in the whole kinematic region. We use lattice QCD data to constrain the free parameters in the form factors expansion, which is further constrained by endpoint relations, dispersive bounds, and SCET relations. We analyse different scenarios, where we expand the form factors up to different orders, and their viability. Finally, we use our results to obtain predictions for some observables in Λ b → Λ(1520) + − decays, as the differential branching ratio, the forward-backwards lepton asymmetry and the branching ratio of Λ b → Λ(1520)γ. Finally, we provide a python notebook based on the software EOS to reproduce our result.

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“…All the numerical studies are performed using the version 1.0.4 of the EOS software [43,44]. We use EOS default values for the physical constants, which include the values in Table 3.1.…”

Section: Fit Resultsmentioning

confidence: 99%

Dispersive analysis of $\Lb \to Ł(1520)$ local form factors

Amhis¹,

Bordone²,

Reboud³

2022

Preprint

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“…These constraints are complementary to the ones derived from low-energy flavorphysics observables and they have already been proven to be useful in many cases [4][5][6][7][8][9][10][11][12][13][14]. While several tools exist to simplify the phenomenology of low-energy flavor observables in the SM and beyond [15][16][17][18][19], a similar framework for flavor-physics observables at high-p T was still missing.…”

Section: Introductionmentioning

confidence: 99%

HighPT: A Tool for high-$p_T$ Drell-Yan Tails Beyond the Standard Model

Allwicher¹,

Faroughy²,

Jaffredo³

et al. 2022

Preprint

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HighPT is a Mathematica package for the analysis of high-energy data of semileptonic transitions at hadron colliders. It allows to compute high-p T tail observables for semileptonic processes, i.e. Drell-Yan cross sections, for dilepton and monolepton final states at the LHC. These observables can be calculated at tree level within the Standard Model Effective Field Theory, including the relevant operators up to dimension eight to ensure a consistent description of the cross section including terms of O(Λ −4 ) in the cutoff scale Λ. For New Physics models with new mediators that can be resolved at LHC energies, HighPT can also account for the full propagation effects of these new bosonic states at tree level. Using the available data from the high-p T tails in the relevant LHC run-II searches by the ATLAS and CMS collaborations, HighPT can also construct the corresponding likelihoods for all possible flavors of the leptonic final states. As an illustration, we derive and compare constraints on Wilson coefficients at different orders in the Effective Field Theory expansion, and we investigate lepton flavor violation for the S 3 leptoquark model. The HighPT code is publicly available at .

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“…As an important by-product of our work, we introduce the Mathematica package HighPT [46] that provides the complete SMEFT likelihood for semileptonic operators in Drell-Yan processes at the LHC. 1 This package will complement the ongoing effort to provide tools for the SMEFT phenomenology of low-energy flavor observables [47][48][49][50], as well as electroweak and Higgs data [50][51][52]. HighPT also provides the likelihood for specific models of interest such as leptoquarks [53,54], including their propagation effects at the LHC.…”

Section: Introductionmentioning

confidence: 99%

Drell-Yan Tails Beyond the Standard Model

Allwicher¹,

Faroughy²,

Jaffredo³

et al. 2022

Preprint

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We investigate the high-p T tails of the pp → ν and pp → Drell-Yan processes as probes of New Physics in semileptonic interactions with an arbitrary flavor structure. For this purpose, we provide a general decomposition of the 2 → 2 scattering amplitudes in terms of form-factors that we match to specific scenarios, such as the Standard Model Effective Field Theory (SMEFT), including all relevant operators up to dimension-8, as well as ultraviolet scenarios giving rise to tree-level exchange of new bosonic mediators with masses at the TeV scale. By using the latest LHC run-II data in the monolepton (eν, µν, τ ν) and dilepton (ee, µµ, τ τ , eµ, eτ , µτ ) production channels, we derive constraints on the SMEFT Wilson coefficients for semileptonic four-fermion and dipole operators with the most general flavor structure, as well as on all possible leptoquark models. For the SMEFT, we discuss the range of validity of the EFT description, the relevance of O(1/Λ 2 ) and O(1/Λ 4 ) truncations, the impact of d = 8 operators and the effects of different quark-flavor alignments. Finally, as a highlight, we extract for several New Physics scenarios the combined limits from high-p T processes, electroweak pole measurements and low-energy flavor data for the b → cτ ν transition, showing the complementarity between these different observables. Our results are compiled in HighPT, a package in Mathematica which provides a simple way for users to extract the Drell-Yan tails likelihoods for semileptonic effective operators and for leptoquark models.

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EOS: a software for flavor physics phenomenology

Cited by 36 publications

References 85 publications

Dispersive analysis of $\Lb \to Ł(1520)$ local form factors

Dispersive analysis of $\Lb \to Ł(1520)$ local form factors

HighPT: A Tool for high-$p_T$ Drell-Yan Tails Beyond the Standard Model

Drell-Yan Tails Beyond the Standard Model

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