Muon g − 2 anomaly in anomaly mediation

Yin, Wen

doi:10.1007/jhep06(2021)029

Cited by 45 publications

(8 citation statements)

References 64 publications

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“…This is confirmed by our numerical results in figure 2 (see the blue and purple shaded regions). The fact that an explanation of (g − 2) µ prefers a light spectrum of sleptons and electroweakinos has been re-emphasized recently in several studies of the MSSM [74][75][76][77][78][79][80][81][82][83][84][85][86][87][88] and of MSSM extensions [89,90]. It is possible to accommodate the preferred value for ∆a µ for a somewhat heavier spectrum (m SUSY 1 TeV) in corners of parameter space with JHEP07(2021)118 either a very large µ term [75,77,85] or with very large values of tan β.…”

Section: Muon Anomalous Magnetic Moment In the Mssmmentioning

confidence: 99%

Explaining (g − 2)μ with multi-TeV sleptons

Altmannshofer

Gadam

Gori

et al. 2021

J. High Energ. Phys.

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We present a supersymmetric extension of the Standard Model in which the new physics contributions to the anomalous magnetic moment of the muon can be more than an order of magnitude larger than in the minimal supersymmetric Standard Model. The extended electroweak symmetry breaking sector of the model can consistently accommodate Higgs bosons and Higgsinos with O(1) couplings to muons. We find that sleptons with masses in the multi-TeV range can comfortably explain the recently confirmed discrepancy in the anomalous magnetic moment of the muon. We discuss additional phenomenological aspects of the model, including its effects on tau flavor changing decays.

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Section: Muon Anomalous Magnetic Moment In the Mssmmentioning

confidence: 99%

Explaining (g − 2)μ with multi-TeV sleptons

Altmannshofer

Gadam

Gori

et al. 2021

J. High Energ. Phys.

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“…There have been an appreciable number of SUSY-based analyses on (g − 2) µ after the announcement of Fermilab result [35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][54][55][56][57]. Some of the above works also involve dark matter constraints.…”

Section: Yukawa Threshold Correctionsmentioning

confidence: 99%

Muon and Electron $(g-2)$ Anomalies with Non-Holomorphic Interactions in MSSM

Chakraborti¹,

Chattopadhyay²,

Mukherjee³

2021

Preprint

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The recent Fermilab muon g − 2 result and the same for electron due to fine-structure constant measurement through 133 Cs matter-wave interferometry are probed in relation to MSSM with non-holomorphic (NH) trilinear soft SUSY breaking terms, referred as NHSSM. Supersymmetric contributions to charged lepton (g − 2) l can be enhanced via the new trilinear terms involving a wrong Higgs coupling with left and right-handed scalars. Bino-slepton loop is used to enhance the SUSY contribution to g − 2 where wino mass stays at 1.5 TeV and the left and right slepton mass parameters for the first two generations are considered to be the same. Unlike many MSSM based analyses, the model does not require a light electroweakino, or light sleptons, or unequal left and right slepton masses, or a very large higgsino mass parameter. First part of the analysis involves (g − 2) µ constraint along with limits from Higgs mass, B-physics, collider data, direct detection of dark matter (DM) while focusing on a higgsino DM which is underabundant in nature. We then impose the constraint from electron g − 2 where a large Yukawa threshold corrections (an outcome of NHSSM) and opposite signs of trilinear NH coefficients associated with µ and e fields are used to satisfy the dual limits of ∆a µ and ∆a e (where the latter comes with negative sign).Varying Yukawa threshold corrections further provide the necessary flavor-dependent enhancement of ∆a e /m 2 e compared to that of ∆a µ /m 2 µ . A larger Yukawa threshold correction through A e for y e also takes away the direct proportionality of a e with respect to tan β. With a finite intercept, a e becomes only an increasing function of tan β. We identified the available parameter space in the two cases while also applying the ATLAS data on slepton pair production in the plane of slepton mass parameter and the mass of the lightest neutralino.

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“…While the muon g − 2 anomaly can be readily explained in the low energy effective MSSM due to its large number of free soft SUSY-breaking parameters, the explanation is rather challenging in the constrained models with given SUSY breaking mediation mechanisms [30,[41][42][43][44][45], such as mSUGRA/CMSSM, GMSB and AMSB. In these fancy models we have boundary conditions for the soft SUSY-breaking terms at some high energy scale, e.g., the GUT scale in mSUGRA/CMSSM.…”

Section: The Implication For Low Energy Supersymmetrymentioning

confidence: 99%

A pedagogical review on muon $g-2$

Li¹,

Xiao²,

Yang³

2021

Preprint

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This note is a pedagogical mini review on the muon anomalous magnetic moment (g − 2), translated and adapted from our article published in Modern Physics 4 (2021) 40-47. The contents include: (i) The magnetic moment of an electric-current coil; (ii) The magnetic moment of a charged lepton estimated as a classical charged ball with spin; (iii) The magnetic moment of a charged lepton from Dirac equation with electromagnetic interaction; (iv) The g − 2 of a charged lepton from QED beyond tree level with effective couplings; (v) The measurement of muon g − 2; (vi) The muon g − 2 in low energy supersymmetric models. Finally, we give an outlook.

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Muon g − 2 anomaly in anomaly mediation

Cited by 45 publications

References 64 publications

Explaining (g − 2)μ with multi-TeV sleptons

Explaining (g − 2)μ with multi-TeV sleptons

Muon and Electron $(g-2)$ Anomalies with Non-Holomorphic Interactions in MSSM

A pedagogical review on muon $g-2$

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