Language :
SWEWE Member :Login |Registration
Search
Encyclopedia community |Encyclopedia Answers |Submit question |Vocabulary Knowledge |Upload knowledge
questions :Food chain and eektric quark
Visitor (79.106.*.*)[Albanian ]
Category :[Science][Other]
I have to answer [Visitor (3.89.*.*) | Login ]

Picture :
Type :[|jpg|gif|jpeg|png|] Byte :[<2000KB]
Language :
| Check code :
All answers [ 1 ]
[Visitor (112.0.*.*)]answers [Chinese ]Time :2022-05-04
Food chain and electric quarks

(A proton and an antiproton collide at high energy, producing a pair of nearly free quarks.) )

The types of quarks are called "tastes", and they are up, down, 粲 (charm), odd, bottom and top. The upper and lower quarks are the lowest of all quarks. Heavier quarks quickly become up or down quarks through a process called particle decay. Particle decay is a process that changes from a high-mass state to a low-mass state. For this reason, upper and lower quarks are generally stable, so they are common in the universe, while odd, glamorous, top, and bottom can only be produced by collisions of high-energy particles (such as cosmic rays and particle accelerators).
Quarks have a variety of different intrinsic properties, including charge, color charge, spin, and mass. In the Standard Model, quarks are the only elementary particles that can withstand all four fundamental interactions, sometimes referred to as "fundamental forces" (electromagnetic, gravitational, strong, and weak). Quarks are also the only particles known to have a non-integer fundamental charge. Each flavor of a quark has a corresponding antiparticle called an antiquark, which differs from a quark in that some of its characteristics are the same size as the quark but the plus or minus are different.
The quark model was independently proposed by Murray Gell-Mann and George Zweig in 1964. The concept of quarks was introduced to better organize the various hadrons, and there was little physical evidence to confirm the existence of quarks until 1968, when SLAC developed experiments with deep inelastic scattering. All six flavors of quarks have been observed by accelerator experiments; the top quark, first observed at Fermilab in 1995, was the last to be discovered.
Search

版权申明 | 隐私权政策 | Copyright @2018 World encyclopedic knowledge