美国粒子对撞机验证反物质存在
<p><span word="US">US</span> <span word="particle">particle</span> <span word="physicists">physicists</span> <span word="are">are</span> <span word="inching">inching</span> <span word="closer">closer</span> <span word="to">to</span> <span word="determining">determining</span> <span word="why">why</span> <span word="the">the</span> <span word="Universe">Universe</span> <span word="exists">exists</span> <span word="in">in</span> <span word="its">its</span> <span word="current">current</span> <span word="form">form</span>, <span word="made">made</span> <span word="overwhelmingly">overwhelmingly</span> <span word="of">of</span> <span word="matter">matter</span>.</p><p>美国的粒子物理学家在探索为何现行的宇宙主要由正物质组成的过程中又进了一步。</p><p><span word="Physics">Physics</span> <span word="suggests">suggests</span> <span word="equal">equal</span> <span word="amounts">amounts</span> <span word="of">of</span> <span word="matter">matter</span> <span word="and">and</span> <span word="antimatter">antimatter</span> <span word="should">should</span> <span word="have">have</span> <span word="been">been</span> <span word="made">made</span> <span word="in">in</span> <span word="the">the</span> <span word="Big">Big</span> <span word="Bang">Bang</span>.</p><p>物理学家认为等量的正物质和反物质应该在宇宙大爆炸的过程中形成。</p><p><span word="In">In</span> 2010, <span word="researchers">researchers</span> <span word="at">at</span> <span word="the">the</span> <span word="Tevatron">Tevatron</span> <span word="accelerator">accelerator</span> <span word="claimed">claimed</span> <span word="preliminary">preliminary</span> <span word="results">results</span> <span word="showing">showing</span> <span word="a">a</span> <span word="small">small</span> <span word="excess">excess</span> <span word="of">of</span> <span word="matter">matter</span> <span word="over">over</span> <span word="antimatter">antimatter</span> <span word="as">as</span> <span word="particles">particles</span> <span word="decayed">decayed</span>.</p><p>2010年，研究人员在粒子对撞机的初步试验中发现在正物质粒子衰变的过程当中有少量的反物质出现。</p><p><span word="The">The</span> <span word="team">team</span> <span word="has">has</span> <span word="submitted">submitted</span> <span word="a">a</span> <span word="paper">paper</span> <span word="showing">showing</span> <span word="those">those</span> <span word="results">results</span> <span word="are">are</span> <span word="on">on</span> <span word="a">a</span> <span word="firmer">firmer</span> <span word="footing">footing</span>.</p><p>这个研究团队已经发表了一篇论文来说明这个试验结果的真实性。</p><p><span word="Each">Each</span> <span word="of">of</span> <span word="the">the</span> <span word="fundamental">fundamental</span> <span word="particles">particles</span> <span word="known">known</span> <span word="has">has</span> <span word="an">an</span> <span word="antimatter">antimatter</span> <span word="cousin">cousin</span>, <span word="with">with</span> <span word="identical">identical</span> <span word="properties">properties</span> <span word="but">but</span> <span word="opposite">opposite</span> <span word="electric">electric</span> <span word="charge">charge</span>.</p><p>物理学家认为任何的基础物质都有一个反物质“表兄”，反物质与正物质的拥有一致的物理特性，但是带有完全相反的电性。</p><p><span word="When">When</span> <span word="a">a</span> <span word="particle">particle</span> <span word="encounters">encounters</span> <span word="its">its</span> <span word="antiparticle">antiparticle</span>, <span word="they">they</span> "<span word="annihilate">annihilate</span>" <span word="each">each</span> <span word="other">other</span>, <span word="disappearing">disappearing</span> <span word="in">in</span> <span word="a">a</span> <span word="high">high</span>-<span word="energy">energy</span> <span word="flash">flash</span> <span word="of">of</span> <span word="light">light</span>.</p><p>当一个粒子遇到它的反物质的时候，他们会湮灭彼此，同时放出夺目的高能闪光。</p>
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