Muon G 2 Anomaly


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Fermilab strengthens muon g-2 anomaly – CERN Courier

Fermilab Strengthens Muon G-2 Anomaly – CERN Courier

The first run of the muon g-2 experiment at Fermilab increases the tension between measurements and theoretical calculations to 4.2 standard deviations. Apr 7, 2021 ... The Fermilab muon g-2 collaboration took its first dataset in 2018, with over eight billion muon decays resulting in an overall uncertainty ... [ReadMore..]

Minimal models for dark matter and the muon g − 2 anomaly ...

Minimal Models For Dark Matter And The Muon G − 2 Anomaly ...

Jul 6, 2018 ... We construct models with minimal field content that can simultaneously explain the muon g − 2 anomaly and give the correct dark matter ... [ReadMore..]

Muon $ g-2$ Anomaly in Anomaly Mediation

Muon $ G-2$ Anomaly In Anomaly Mediation

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 1$σ$ 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 Apr 7, 2021 ... Abstract: The long-standing muon g-2 anomaly has been confirmed recently at the Fermilab. The combined discrepancy from Fermilab and ... [ReadMore..]

Why You Should Doubt 'New Physics' From The Latest Muon g-2 ...

Why You Should Doubt 'New Physics' From The Latest Muon G-2 ...

The mismatch between theory and experiment is anything but certain. Apr 8, 2021 ... The latter, unfortunately, has been the fate of every experimental anomaly discovered in particle physics since the discovery of the Higgs boson ... [ReadMore..]

Muon ${g-2} $ Anomaly and Neutrino Magnetic Moments

Muon ${g-2} $ Anomaly And Neutrino Magnetic Moments

We show that a unified framework based on an $SU(2)_H$ horizontal symmetry which generates a naturally large neutrino transition magnetic moment and explains the XENON1T electron recoil excess also predicts a positive shift in the muon anomalous magnetic moment. This shift is of the right magnitude to be consistent with the Brookhaven measurement as well as the recent Fermilab measurement of the muon $g-2$. A relatively light neutral scalar from a Higgs doublet with mass near 100 GeV contributes to muon $g-2$, while its charged partner induces the neutrino magnetic moment. In contrast to other multi-scalar theories, in the model presented here there is no freedom to control the sign and strength of the muon $g-2$ contribution. We analyze the collider tests of this framework and find that the HL-LHC can probe the entire parameter space of these models. Apr 7, 2021 ... A relatively light neutral scalar from a Higgs doublet with mass near 100 GeV contributes to muon g-2, while its charged partner induces the ... [ReadMore..]

Muon g-2 - Wikipedia

Muon G-2 - Wikipedia

Muon g-2 (pronounced "gee minus two") is a particle physics experiment at Fermilab to measure the anomalous magnetic dipole moment of a muon to a precision ... [ReadMore..]

Muon g − 2: A review - ScienceDirect

Muon G − 2: A Review - ScienceDirect

The muon magnetic anomaly, aμ=(gμ−2)/2, plays a special role in the history of the Standard Model (SM). Precise calculations and measurements of this … The muon magnetic anomaly, a μ = ( g μ − 2 ) / 2 , plays a special role in the history of the Standard Model (SM). Precise calculations and measurements of ... [ReadMore..]

Muon g-2: Fermilab

Muon G-2: Fermilab

Apr 27, 2021 ... Muon g-2 (pronounced gee minus two) uses Fermilab's powerful accelerators to explore the interactions of short-lived particles known as muons ... [ReadMore..]

The Muon g–2 Anomaly Explained - Physics

The Muon G–2 Anomaly Explained - Physics

Jorge Cham, aka, PHD Comics, illustrates the excitement over the muon anomaly results in a set of cartoons he made for Physics. Apr 7, 2021 ... The Muon g–2 Anomaly Explained ... Jorge Cham, aka, PHD Comics, illustrates the excitement over the muon anomaly results in a set of cartoons he ... [ReadMore..]

The Muon g-2 Experiment Home Page

The Muon G-2 Experiment Home Page

The webcast of the announcement may be found on this page. The Muon (g-2) Experiment at Brookhaven National Laboratory is stringently testing the Standard Model ... [ReadMore..]

Explanation of electron and muon g − 2 anomalies in the MSSM ...

Explanation Of Electron And Muon G − 2 Anomalies In The MSSM ...

Oct 4, 2019 ... Muon g-2 collaboration, Final report of the muon E821 anomalous magnetic moment measurement at BNL, Phys. Rev. [ReadMore..]