English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

The Fermi National Accelerator Laboratory (FNAL) Muon $g-2$ Experiment hasmeasured the positive muon magnetic anomaly $a_{\mu} \equiv (g_{\mu}-2)/2$ witha precision of 0.46 parts per million, with data collected during its firstphysics run in 2018. The experimental result combined with the measurement fromthe former experiment at Brookhaven National Laboratory increases the tensionwith the Standard Model expectation to $4.2\sigma$, thus strengthening evidencefor new physics. The magnetic anomaly is determined from the precisionmeasurements of the muon spin precession frequency, relative to the muonmomentum, and the average magnetic field seen by the beam. In an ideal casewith muons orbiting in a horizontal plane with a uniform vertical magneticfield, the anomalous precession frequency $\omega_a$ is given by the differencebetween the spin~($s$) and cyclotron~($c$) frequencies, $\omega_a = \omega_s -\omega_c$. The observable $\omega_a$ is proportional to $a_{\mu}$. Thisproceeding presents the beam dynamics systematic corrections that are requiredto adjust the measured muon precession frequency $\omega^{m}_{a}$ to its truephysical value $\omega_{a}$.

Beam dynamics corrections to the Run-1 measurement of the muon anomaly $a_{\mu}$ at Fermilab