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Description and fir...
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Charman, A. E.
(författare)
Description and first application of a new technique to measure the gravitational mass of antihydrogen
- Artikel/kapitelEngelska2013
Förlag, utgivningsår, omfång ...
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2013-04-30
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Springer Science and Business Media LLC,2013
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printrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:su-91539
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-91539URI
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https://doi.org/10.1038/ncomms2787DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
Anmärkningar
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Physicists have long wondered whether the gravitational interactions between matter and antimatter might be different from those between matter and itself. Although there are many indirect indications that no such differences exist and that the weak equivalence principle holds, there have been no direct, free-fall style, experimental tests of gravity on antimatter. Here we describe a novel direct test methodology; we search for a propensity for anti-hydrogen atoms to fall downward when released from the ALPHA antihydrogen trap. In the absence of systematic errors, we can reject ratios of the gravitational to inertial mass of antihydrogen 475 at a statistical significance level of 5%; worst-case systematic errors increase the minimum rejection ratio to 110. A similar search places somewhat tighter bounds on a negative gravitational mass, that is, on antigravity. This methodology, coupled with ongoing experimental improvements, should allow us to bound the ratio within the more interesting near equivalence regime.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Amole, C.
(författare)
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Jonsell, SvanteStockholms universitet,Fysikum(Swepub:su)svjon
(författare)
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Zhmoginov, A. I.
(författare)
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Stockholms universitetFysikum
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Nature Communications: Springer Science and Business Media LLC42041-1723
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