Editing Quark

[[Catgeory: Physics]]
== Explanation ==
Quarks are the [[elementary particles]] that combines and interacts through the [[strong interaction]] as [[color force]] to form [[hadron]]s like [[proton]] and [[neutron]]. There are six species of quarks, generally referred to as flavors. They are up and down quarks, charm and strange quarks, top and bottom quarks. The quarks have [[color charges]] that causes the color force. The color charges are arbitrarily given names as red, blue and green. For example, inside a proton, the two up quarks and the down quark change colors by emitting a [[gluon]], which mediates the strong color force between them.
== Frequently Asked Questions ==
=== Why is it impossible to observe quarks? ===
Quarks don’t exist individually due to [[color confinement]]. When a quark pair is separated, the gluon tubes between them increases and the energy becomes higher. At one point, this energy becomes higher than the energy required in creating a new antiquark matter. So the instant the gluon tubes separate, the isolated quark forms itself an antiquark to pair with, forming a [[meson]]. This the reason why quarks cannot be observed individually. But in particle accelerators, quarks can be observed as quark jets. However, it is believed that after the [[Big Bang]] the universe was in a state of [[quark–gluon plasma]]. On July 2015, the LHC produced quark-gluon plasma. In this state, the quarks are said to be [[deconfinement|deconfined]].