The history of the muon (g-2) experiments

Roberts, B. L.

doi:10.21468/scipostphysproc.1.032

Cited by 7 publications

(7 citation statements)

References 54 publications

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“…Ultralight DM may generate a frequency modulation or a frequency shift in the total count, as in Eqns. (25) and (29). We may describe both cases as a DM-induced frequency modulation of amplitude δω and frequency m in the oscillation of the momentum-component of spin S y .…”

Section: A Total Countmentioning

confidence: 96%

“…ω C is much faster than the frequency ω sm at which S itself rotates, and so generically both of these components ω C ±m dm are very rapid, which further suppressed the signal, as in Eqn. (25). This suppression is removed in a narrow frequency interval around m dm ≈ ω C in which case one of the components is nearly static.…”

Section: Lµ − Lτmentioning

confidence: 97%

“…We discuss only what is necessary to reveal the implications of these measurements on DM-muon interactions. For more thorough reviews, see [23][24][25] A. Spin Tracking via Muon Decay…”

Section: Overview Of Muon Spin Precession Experimentsmentioning

confidence: 99%

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Muon g-2 and EDM experiments as muonic dark matter detectors

Janish,

Ramani

2020

Preprint

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The detection of ultralight dark matter through interactions with nucleons, electrons, and photons has been explored in depth. In this work we propose to use precision muon experiments, specifically muon g-2 and electric dipole moment measurements, to detect ultralight dark matter that couples predominantly to muons. We set direct, terrestrial limits on DM-muon interactions using existing g-2 data, and show that a time-resolved reanalysis of ongoing and upcoming precession experiments will be sensitive to dark matter signals. Intriguingly, we also find that the current muon g-2 anomaly can be explained by a spin torque applied to muons from a pseudoscalar dark matter background that induces an oscillating electric dipole moment for the muon. This explanation may be verified by a time-resolved reanalysis.

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Section: A Total Countmentioning

confidence: 96%

Section: Lµ − Lτmentioning

confidence: 97%

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Muon g-2 and EDM experiments as muonic dark matter detectors

Janish,

Ramani

2020

Preprint

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“…Similarly, work on the direct experimental measurement of a µ has been going on for decades, with more precise results being determined over time [35].…”

Section: Combined Standard Model Valuementioning

confidence: 99%

MUON SPIN PRECESSION FREQUENCY EXTRACTION AND DECAY POSITRON TRACK FITTING IN RUN 1 OF THE FERMILAB MUON \MakeLowercase{$g-2$\xspace} EXPERIMENT

Kinnaird

2020

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There are many people I would like to thank in my journey as a graduate student.First and foremost, my advisor Lee Roberts, for whom it has been an absolute pleasure and honor to work for. He gave me a special and unique opportunity to join the BU physics group and E989 collaboration, and I will always cherish it. To my second reader of this dissertation, Rob Carey, who has taught me many things along the way, including introducing me to the track fitting which was my first major project on the experiment. Thanks also to Jim Miller, who has always provided advice and suggestions regarding my work. Thanks to my non g − 2 committee members Ken Lane and Shyam Erramilli, who taught me particle theory and electromagnetism respectively, without which I would not have understood the experiment I was on.Much thanks to Mirtha Cabello, the BU physics graduate student coordinator, who was always a joy to talk to and who was invaluable when it came to dealing with all of the administrative stuff. Thanks to my BU office buddy and friend, John Quirk, who was always a great source of humor and grounding when things got tough. I would also like to give special thanks to James Mott, who had endless patience and support for me as I grew, both as a graduate student and a person. He was a fantastic advisor to me as I lived in Fermilab these last few years, and being able to turn my chair around and ask for advice saved my graduate career on more than occasion. I'd like to thank the entire E989 collaboration, without whom none of this work would have been possible. I'd first like to thank the Tracking team, of which I was a part for many years. Thanks to

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“…Since then, there have been a number of muon g − 2 experiments, each improving on the last. Lee Roberts succinctly summarized the fascinating history of these experiments in his article The History of Muon (g − 2) Experiments [33]. Here the focus will be on the most recently completed experiment, The Brookhaven Muon g − 2 Experiment, or E821 [34].…”

Section: The Brookhaven Muon G − 2 Experimentsmentioning

confidence: 99%

Measuring the Precession Frequency in the E989 Muon g – 2 Experiment

Fienberg

2019

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The E989 Muon g − 2 Experiment aims to measure the anomalous magnetic moment of the muon, a µ , to an unprecedented precision of 140 parts per billion (ppb). There currently stands a greater than 3σ discrepancy between the best measurement of a µ and its theoretical value predicted using the Standard Model. The E989 experiment seeks to either resolve or confirm this discrepancy, which is suggestive of new physics interactions within reach of many contemporary experiments. To achieve the E989 target precision, the anomalous precession frequency, ω a , of muons in a magnetic storage ring must be determined with a systematic uncertainty below 70 ppb. This frequency is imprinted on the time-dependent energy distribution of decay positrons observed by 24 electromagnetic calorimeters. These calorimeters feature a novel design optimized expressly for the stringent demands of the ω a measurement. This dissertation outlines the motivation for and measurement principles behind E989, discusses the requirements, prototyping, testing, commissioning, and operations of the electromagnetic calorimeters, and presents a preliminary, blinded analysis of data

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The history of the muon (g-2) experiments

Cited by 7 publications

References 54 publications

Muon g-2 and EDM experiments as muonic dark matter detectors

Muon g-2 and EDM experiments as muonic dark matter detectors

MUON SPIN PRECESSION FREQUENCY EXTRACTION AND DECAY POSITRON TRACK FITTING IN RUN 1 OF THE FERMILAB MUON \MakeLowercase{$g-2$\xspace} EXPERIMENT

Measuring the Precession Frequency in the E989 Muon g – 2 Experiment

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