Π介子:修订间差异

求闻百科,共笔求闻
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| caption = <span style="font-family: Arial;">π</span>介子的[[夸克]]构成。
| caption = <span style="font-family: Arial;">π</span>介子的[[夸克]]构成。
| num_types = 3
| num_types = 3
| composition = <span style="font-family: Arial;">π</span><sup>+</sup>:u<font style="text-decoration: overline">d</font><br /><span style="font-family: Arial;">π</span><sup>0</sup>:d<font style="text-decoration: overline">d</font> / u<font style="text-decoration: overline">u</font><br /><span style="font-family: Arial;">π</span><sup>−</sup>:d<font style="text-decoration: overline">u</font>
| composition = <span style="font-family: Arial;">π</span><sup>+</sup>:u<font style="text-decoration: overline">d</font><br><span style="font-family: Arial;">π</span><sup>0</sup>:d<font style="text-decoration: overline">d</font> / u<font style="text-decoration: overline">u</font><br><span style="font-family: Arial;">π</span><sup>−</sup>:d<font style="text-decoration: overline">u</font>
| family = [[玻色子]]
| family = [[玻色子]]
| group = [[介子]]
| group = [[介子]]
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| discovered =
| discovered =
| symbol = <span style="font-family: Arial;">π</span><sup>+</sup>、<span style="font-family: Arial;">π</span><sup>0</sup>和<span style="font-family: Arial;">π</span><sup>−</sup>
| symbol = <span style="font-family: Arial;">π</span><sup>+</sup>、<span style="font-family: Arial;">π</span><sup>0</sup>和<span style="font-family: Arial;">π</span><sup>−</sup>
| mass = <span style="font-family: Arial;">π</span><sup>±</sup>:139.57018(35) [[電子伏特|MeV]]/[[光速|c]]<sup>2</sup><br /><span style="font-family: Arial;">π</span><sup>0</sup>:134.9766(6) [[電子伏特|MeV]]/[[光速|c]]<sup>2</sup>
| mass = <span style="font-family: Arial;">π</span><sup>±</sup>:139.57018(35) [[電子伏特|MeV]]/[[光速|c]]<sup>2</sup><br><span style="font-family: Arial;">π</span><sup>0</sup>:134.9766(6) [[電子伏特|MeV]]/[[光速|c]]<sup>2</sup>
|mean_lifetime = π</span><sup>±</sup>:2.6×10<sup>-8</sup>s
|mean_lifetime = π</span><sup>±</sup>:2.6×10<sup>-8</sup>s
π</span><sup>0</sup>:8.4×10<sup>-17</sup>s
π</span><sup>0</sup>:8.4×10<sup>-17</sup>s
| decay_time = <span style="font-family: Arial;">π</span><sup>±</sup>:2.6×10<sup>−8</sup>s,<span style="font-family: Arial;">π</span><sup>0</sup>:8.4×10<sup>−17</sup>
| decay_time = <span style="font-family: Arial;">π</span><sup>±</sup>:2.6×10<sup>−8</sup>s,<span style="font-family: Arial;">π</span><sup>0</sup>:8.4×10<sup>−17</sup>
| decay_particle =
| decay_particle =
| electric_charge = <span style="font-family: Arial;">π</span><sup>±</sup>:±[[元电荷|e]]<br /><span style="font-family: Arial;">π</span><sup>0</sup>:0
| electric_charge = <span style="font-family: Arial;">π</span><sup>±</sup>:±[[元电荷|e]]<br><span style="font-family: Arial;">π</span><sup>0</sup>:0
| color_charge =
| color_charge =
| spin = 0
| spin = 0
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|-
|-
! class=unsortable|粒子名称
! class=unsortable|粒子名称
! 粒子<br />符号
! 粒子<br>符号
! 反粒子<br />符号
! 反粒子<br>符号
! class=unsortable|夸克<br />构成<ref name=PDGQuarkmodel>C. Amsler ''et al.''. (2008): [http://pdg.lbl.gov/2008/reviews/quarkmodrpp.pdf Quark Model]</ref>
! class=unsortable|夸克<br>构成<ref name=PDGQuarkmodel>C. Amsler ''et al.''. (2008): [http://pdg.lbl.gov/2008/reviews/quarkmodrpp.pdf Quark Model]</ref>
! [[静止质量]] ([[電子伏特|MeV]]/[[光速|c]]<sup>2</sup>)
! [[静止质量]] ([[電子伏特|MeV]]/[[光速|c]]<sup>2</sup>)
! width="50"|[[同位旋|I]]<sup>[[G宇称|G]]</sup>
! width="50"|[[同位旋|I]]<sup>[[G宇称|G]]</sup>