Bulletin of the American Physical Society
APS April Meeting 2019
Volume 64, Number 3
Saturday–Tuesday, April 13–16, 2019; Denver, Colorado
Session T10: Collider and BSM IV
3:30 PM–5:18 PM,
Monday, April 15, 2019
Sheraton
Room: Governor's Square 12
Sponsoring
Unit:
DPF
Chair: Jeremy Love, Argonne National Laboratory
Abstract: T10.00008 : Pileup Systematic Studies in the Fermilab Muon g-2 Experiment*
4:54 PM–5:06 PM
View Presentation Abstract
Presenter:
Meghna Bhattacharya
(University of Mississippi)
Authors:
Meghna Bhattacharya
(University of Mississippi)
Sudeshna Ganguly
(University of Illinois Urbana Champaign)
Collaboration:
The Fermilab Muon g-2 Collaboration
The Muon g-2 experiment at Fermilab (E989) aims to measure the anomalous magnetic moment of the muon, aμ, to a precision of 140 ppb, a four-fold increase in precision over the previous experiment at Brookhaven National Laboratory (BNL). The value of aμ from BNL currently differs from the Standard Model prediction by ∼3.5 standard deviations or higher, suggesting the potential for new physics and therefore, motivating a new experiment. The Fermilab experiment follows the measurement principles of the BNL experiment, injecting a beam of positive muons into a storage ring, which focuses the beam with a combination of magnetic and electric fields. The muon anomaly relies on the measurement of the spin precession frequency ωa about the muon momentum. This presentation will focus on one of the most important sources of systematic to the ωa analysis: pileup effects. Pileup refers to the overlap of decays in the detector that originate from separate muon decays, too close to each other in time and space to be resolved into individual pulses. A complete description of how pileup events are identified will be presented along with a discussion of how the correction to a traditional ωa analysis is formulated and applied.
*United States Department of Energy
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