Leading hadronic contribution to the muon magnetic moment from lattice QCD

Borsányi, Szabolcs; Fodor, Z.; Guenther, Jana N.; Hoelbling, Christian; Katz, Sándor D.; Lellouch, Laurent; Lippert, Th.; Miura, Kiyotaka; Parato, Letizia; Szabó, Kornélia; Stokes, Finn M.; Tóth, Bálint; Török, Cs.; Varnhorst, Lukas

doi:10.1038/s41586-021-03418-1

Cited by 784 publications

(648 citation statements)

References 37 publications

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“…In the latter case, we assume that the lightest neutralino contributes only partially to the total DM relic density. 4 Superiso Relic [92] is employed to test the points in the parameter space against the searches for DM-induced γ-rays in FermiLAT [93] and to analyze the cosmic-ray anti-proton bounds from the AMS-02 experiment [94]; cf. also refs.…”

Section: Jhep05(2021)252mentioning

confidence: 99%

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GUT-constrained supersymmetry and dark matter in light of the new (g − 2)μ determination

Chakraborti

Roszkowski

Trojanowski

2021

J. High Energ. Phys.

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The recent confirmation by the Fermilab-based Muon g-2 experiment of the (g − 2)μ anomaly has important implications for allowed particle spectra in softly broken supersymmetry (SUSY) models with neutralino dark matter (DM). Generally, the DM has to be quite light, with the mass up to a few hundred GeV, and bino-dominated if it is to provide most of DM in the Universe. Otherwise, a higgsino or wino dominated DM is also allowed but only as a strongly subdominant component of at most a few percent of the total density. These general patterns can easily be found in the phenomenological models of SUSY but in GUT-constrained scenarios this proves much more challenging. In this paper we revisit the issue in the framework of some unified SUSY models with different GUT boundary conditions on the soft masses. We study the so-called non-universal gaugino model (NUGM) in which the mass of the gluino is disunified from those of the bino and the wino and an SO(10) and an SU(5) GUT-inspired models as examples. We find that in these unified frameworks the above two general patterns of DM can also be found, and thus the muon anomaly can also be accommodated, unlike in the simplest frameworks of the CMSSM or the NUHM. We show the resulting values of direct detection cross-section for points that do and do not satisfy the muon anomaly. On the other hand, it will be challenging to access those solutions at the LHC because the resulting spectra are generally very compressed.

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Section: Jhep05(2021)252mentioning

confidence: 99%

“…It is, however, worth stressing that recently a lattice computation of the leading order SM hadronic vaccuum polarization (LO-HVP) contribution has appeared[4] which largely reduces the tension between the theoretical and experimental results.…”

mentioning

confidence: 99%

GUT-constrained supersymmetry and dark matter in light of the new (g − 2)μ determination

Chakraborti

Roszkowski

Trojanowski

2021

J. High Energ. Phys.

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“…On the day of the announcement of these results, another theoretical calculation using lattice quantum chromodynamics (QCD) was published 5 , weakening the long-standing tension with respect to the Brookhaven result. The reason for these different conclusions on the size of the tension between experiment and theory lies in the computation of the quantum loop corrections to the muon's anomalous magnetic moment in the standard model.…”

Section: A Moment For Muonsmentioning

confidence: 99%

“…They can be computed either by a combination of cross-section data with dispersion relations or by lattice QCD. Although the precision of lattice QCD calculations is catching up 5,6 with those of the dispersion approach, the calculation of the vacuum polarization 5 is awaiting confirmation from other lattice QCD groups.…”

Section: A Moment For Muonsmentioning

confidence: 99%

A moment for muons

2021

Nat. Phys.

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“…where a EXP µ is the experimental value [1][2][3] (See also refs. [3][4][5][6][7][8][9]). The deviation is at a significance of 4.2σ.…”

Section: Introductionmentioning

confidence: 99%

Muon g − 2 anomaly in anomaly mediation

Yin

2021

J. High Energ. Phys.

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The long-standing muon g − 2 anomaly has been confirmed recently at the Fermilab. The combined discrepancy from Fermilab and Brookhaven results shows a difference from the theory at a significance of 4.2 σ. In addition, the LHC has updated the lower mass bound of a pure wino. In this letter, we study to what extent the g − 2 can be explained in anomaly mediation scenarios, where the pure wino is the dominant dark matter component. To this end, we derive some model-independent constraints on the particle spectra and g − 2. We find that the g − 2 explanation at the 1σ level is driven into a corner if the higgsino threshold correction is suppressed. On the contrary, if the threshold correction is sizable, the g − 2 can be explained. In the whole viable parameter region, the gluino mass is at most 2 − 4 TeV, the bino mass is at most 2 TeV, and the wino dark matter mass is at most 1 − 2 TeV. If the muon g − 2 anomaly is explained in the anomaly mediation scenarios, colliders and indirect search for the dark matter may find further pieces of evidence in the near future. Possible UV models for the large threshold corrections are discussed.

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Leading hadronic contribution to the muon magnetic moment from lattice QCD

Cited by 784 publications

References 37 publications

GUT-constrained supersymmetry and dark matter in light of the new (g − 2)μ determination

GUT-constrained supersymmetry and dark matter in light of the new (g − 2)μ determination

A moment for muons

Muon g − 2 anomaly in anomaly mediation

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