تقرير
Antimatter gravity with muonium
| العنوان: | Antimatter gravity with muonium |
|---|---|
| المؤلفون: | Kaplan, Daniel M, Fischbach, Ephraim, Kirch, Klaus, Mancini, Derrick C, Phillips, James D, Phillips, Thomas J, Reasenberg, Robert D, Roberts, Thomas J, Terry, Jeff |
| سنة النشر: | 2016 |
| المجموعة: | General Relativity and Quantum Cosmology High Energy Physics - Experiment Physics (Other) |
| مصطلحات موضوعية: | Physics - Instrumentation and Detectors, General Relativity and Quantum Cosmology, High Energy Physics - Experiment |
| الوصف: | The gravitational acceleration of antimatter, $\bar{g}$, has never been directly measured and could bear importantly on our understanding of gravity, the possible existence of a fifth force, and the nature and early history of the universe. Three avenues appear feasible for such a measurement: antihydrogen, positronium, and muonium. The muonium measurement requires a novel monoenergetic, low-velocity, horizontal muonium beam directed at an atom interferometer. The precision three-grating interferometer can be produced in silicon nitride or ultrananocrystalline diamond using state-of-the-art nanofabrication. The required precision alignment and calibration at the picometer level also appear to be feasible. With 100 nm grating pitch, a 10% measurement of $\bar{g}$ can be made using some months of surface-muon beam time, and a 1% or better measurement with a correspondingly larger exposure. This could constitute the first gravitational measurement of leptonic matter, of 2nd-generation matter and, possibly, the first measurement of the gravitational acceleration of antimatter. Comment: 8 pages, 2 figures. Presented at the Third Workshop on Antimatter Gravity (WAG2015), London, England, 4-7 August 2015 |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/1601.07222 |
| رقم الأكسشن: | edsarx.1601.07222 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |