Conveners
Precision Physics at High Intensities: Parallel 3 — g-2
- Aida El-Khadra (University of Illinois at Urbana-Champaign)
Precision Physics at High Intensities: Parallel 7 — Muons and Electrons
- Renee Fatemi (University of Kentucky)
Dr
Ran Hong
(Argonne National Laboratory)
30/05/2018, 14:00
PPHI
Parallel
The Muon g-2 Experiment (E989) at Fermilab is measuring the anomalous magnetic moment of the muon $a_{\mu}$, aiming at improving the precision to 140 parts-per-billion (ppb) and resolving the standard deviation between the previous measurement of $a_{\mu}$ and the Standard Model calculation of $a_{\mu}$. In E989, the muon beam is stored in a ring magnet. The spin precession frequency...
Dr
Vladimir Pascalutsa
(University of Mainz)
30/05/2018, 14:20
PPHI
Parallel
I will discuss the relation, viz. Schwinger's sum rule, between the g-2 and the spin structure functions. It allows one to assess the hadronic (as well as other) contributions to muon g-2 by measuring the structure function. The latter can be accessed experimentally in inelastic muon-electron scattering. I will outline the prospects of such measurements at the muon-beam facilities.
This...
Prof.
Marc Vanderhaeghen
(Johannes Gutenberg-Universität Mainz)
30/05/2018, 14:40
PPHI
Parallel
In my talk, I will present our recent dispersive analysis of the $\gamma \gamma^\star \to \pi\pi, \pi\eta$ processes from the threshold up to 1.4 GeV in the two photon invariant mass. These amplitudes serve as important input to constrain the hadronic piece of light-by-light scattering contribution to (g-2) and support the current experimental program at BESIII. As well, I will present an...
Dr
Aaron Meyer
(Brookhaven National Laboratory)
30/05/2018, 15:00
PPHI
Parallel
The muon anomalous magnetic moment is a subject of intense focus for theoretical and experimental particle physics at this time. This quantity is especially sensitive to new physics, so the current tension with Standard Model predictions makes the anomalous magnetic moment especially exciting. The muon $g-2$ can be measured with high precision, and predictions from theory must be similarly...
Dr
Christoph Florian Redmer
(Institute for Nuclear Physics, Johannes Gutenberg-University Mainz)
30/05/2018, 15:20
PPHI
Parallel
The uncertainties of the Standard Model prediction of the anomalous magnetic moment of the muon are currently completely dominated by hadronic contributions. The largest contribution is due to the hadronic vacuum polarization. Hadronic cross sections measured at $e^+e^-$ colliders can be exploited as experimental input to improve the calculations, making use of the optical theorem. At the...
Paul Souder
(Syracuse University)
01/06/2018, 14:00
PPHI
Parallel
The SoLID spectrometer is being designed at JLab in order to provide a high luminosity and high-acceptance device for studies of parity-violation in deep inelastic scattering (PVDIS). The PVDIS studies will measure the vector-electron and axial-quark coupling, which is small in the Standard Model and thus provides a good test of BSM physics. In addition, the method provides a unique way to...
Dr
Nils Feege
(Stony Brook University)
01/06/2018, 14:20
PPHI
Parallel
The Electron-Ion Collider (EIC) will be the first facility to collide spin-polarized electrons with polarized protons, polarized light ions, and unpolarized heavy ions at high luminosity. Using the Standard Model electroweak interactions, the EIC will provide unprecedented insights into the structure of nucleons and nuclei and the partonic dynamics inside them. In addition, it will allow for...
Andrew Edmonds
01/06/2018, 14:40
PPHI
Parallel
The AlCap experiment is a joint venture between the COMET and Mu2e collaborations to measure the rate and spectrum of particles emitted after nuclear muon capture on aluminium. Both collaborations will search for the charged lepton flavour violating process of neutrinoless muon-to-electron conversion by stopping muons in an aluminium target and so knowledge of other particles emitted during...
Prof.
Peter Kammel
(CENPA, UW Seattle)
01/06/2018, 15:00
PPHI
Parallel
Muon capture provides a powerful tool to study the properties and structure of the nucleon and few nucleon systems predicted by chiral effective theories founded on Quantum Chromodynamics. Our program focuses on capture from the simplest of all muonic atoms, muonic hydrogen (MuCap experiment) as well as muonic deuterium (MuSun experiment), by using a novel active target method based on the...
Prof.
Daniel Kaplan
(Illinois Institute of Technology)
01/06/2018, 15:20
PPHI
Parallel
The gravitational acceleration of antimatter, $\bar g$, has yet to be directly measured; an unexpected outcome of its measurement could change our understanding of gravity, the universe, and the possibility of a fifth force. Three avenues are apparent for such a measurement: antihydrogen, positronium, and muonium, the last requiring a precision atom interferometer and novel muonium beam under...
