| 单词 | up quark |
| 例句 | Lambda particles are baryons, which means they’re a type of hadron made of three quarks: one up quark, one down quark and one strange quark. Physicists See ‘Strange Matter’ Form inside Atomic Nuclei 2023-04-27T04:00:00Z For instance, the electron has heavier versions called muons and taus, the up quark has heavier relatives named charm and top quarks, and the down quark is followed by strange and beauty quarks. Rule-Breaking Particles Pop Up in Experiments around the World 2022-11-14T05:00:00Z Physicists are also reassessing particle flavor, a quantum property that defines the species of fermion: up quark, down quark, electron, muon, and so on. Physicists Struggle to Unite Around Future Plans 2022-09-08T04:00:00Z A beam of positive pions—lightweight particles made from an up quark and a down antiquark—decay into muons and muon neutrinos. Long-Awaited Muon Measurement Boosts Evidence for New Physics 2021-04-07T04:00:00Z The first family comprises three charged particles — the up quark, the down quark and the electron — and a neutral particle called the electron neutrino. Long-sought decay of the Higgs boson seen 2018-11-18T05:00:00Z After that time span, they decay into a far more common and less energetic kind of subatomic particle, known as the up quark. The Subatomic Discovery That Physicists Considered Keeping Secret 2017-11-06T05:00:00Z An experiment at CERN, within the behemoth Large Hadron Collider, counted more 300 Xi-cc++ baryons, each consisting of two heavy charm quarks and one up quark. CERN Physicists Find a Particle With a Double Dose of Charm 2017-07-06T04:00:00Z Each neutron is made of charged quarks: two down quarks that each carry a negative charge one-third as strong as an electron's; and an up quark that carries a two-thirds positive charge. Efforts to Measure Neutron's Charge Are Plagued by Difficulties 2012-02-01T15:45:10.403Z In the new particle, the up quark circulates around the two heavy charm quarks at the center. CERN Physicists Find a Particle With a Double Dose of Charm 2017-07-06T04:00:00Z A proton consists of two up quarks and one down quark, while a neutron contains one up quark and two down quarks. CERN Physicists Find a Particle With a Double Dose of Charm 2017-07-06T04:00:00Z |
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