Search for Fractional-Charge Particles in Meteoritic Material
نویسندگان
چکیده
منابع مشابه
Search for fractional-charge particles in meteoritic material.
We have used an automated Millikan oil drop method to search for free fractional-charge particles in a sample containing in total 3.9 mg of pulverized Allende meteorite suspended in 259 mg of mineral oil. The average diameter of the drops was 26.5 microm with the charge on about 42 500 000 drops being measured. This search was motivated by the speculation that isolatable, fractional-charge part...
متن کاملImproved search for elementary particles with fractional electric charge.
The SLAC Quark Search Group has demonstrated successful operation of a low cost, high mass throughput Millikan apparatus designed to search for fractionally charged particles. About six million silicone oil drops were measured with no evidence of fractional charges. A second experiment is under construction with 100 times greater throughput which will utilize optimized search fluids. Invited ta...
متن کاملLarge Bulk Matter Search for Fractional Charge Particles
We have carried out the largest search for stable particles with fractional electric charge, based on an oil drop method that incorporates a horizontal electric field and upward air flow. No evidence for such particles was found, giving a 95% C.L. upper limit of 1.15 × 10 particles per nucleon on the abundance of fractional charge particles in silicone oil for 0.18e ≤ |Qresidual| ≤ 0.82e.
متن کاملSearch for free fractional electric charge elementary particles using an automated millikan oil drop technique
We have carried out a direct search in bulk matter for free fractional electric charge elementary particles using the largest mass single sample ever studied-about 17.4 mg of silicone oil. The search used an improved and highly automated Millikan oil drop technique. No evidence for fractional charge particles was found. The concentration of particles with fractional charge more than 0. 16e ( e ...
متن کاملEfficient Bulk Search for Fractional Charge with Multiplexed Millikan Chambers
We outline the design of a fully automated Millikan droplet .apparatus that could detect a single free fractional charge in several hundred grams of matter even without the use of a prefilter. This would constitute an improvement over current limits by about five orders of magnitude. The experiment achieves high material throughput and high background rejection through online processing which a...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2007
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.99.161804