Ogled vira Barion Λ

{{Infopolje Delec
| name            = barion Λ 
| image       = 
| caption     = 
| num_types       = 
| mean_lifetime = <math> \Lambda^0: \,</math> 2,631±0,020.10<sup>-10</sup> [[sekunda|s]]<br /><math> \Lambda^{+}_c: \,</math> 2,00±0,06.10<sup>-13</sup> s
| composition     = <math> \Lambda^0 : uds \,</math> <br /><math> \Lambda^{+}_c : udc \,</math> <br /> <math> \Lambda^{0}_b : udb \,</math> <br /><math> \Lambda^{+}_t : udt \,</math>
| statistics      = [[fermion]]ska
| group           = [[barion]]
| generation      = 
| interaction     = [[močna jedrska sila|močna]]
| antiparticle    = 
| theorized       =
| discovered  = 
| symbol          = <math> \Lambda^0   \,</math>, <math> \Lambda^{+}_c \,</math>, <math> \Lambda^{0}_b \,</math>, <math> \Lambda^{+}_t \,</math>
| mass            = <math> \Lambda^0:   \,</math>1115,683±0,006 [[Elektronvolt|MeV]]/[[hitrost svetlobe|c<sup>2</sup>]], <br /><math> \Lambda^{+}_c: \,</math> 2286±0,14 MeV/c<sup>2</sup> <br /> <math> \Lambda^{+}_b: \,</math> 5620±1,6 MeV/c<sup>2</sup>
| electric_charge = 0 [[osnovni naboj|''e''<sub>0</sub>]]
| spin            = 1/2
| isospin = 0
|weak_isospin    = 
|weak_hypercharge= 
}}
'''Barion Λ''' [barión lámbda] je eden izmed [[barion]]ov. Sestavljen je iz [[kvark u|kvarka u]] in [[kvark d|d]]. Tretji kvark je lahko [[kvark s]] (dobimo barion <math> \Lambda^0 \,</math>) ali [[kvark c]] (dobimo barion <math> \Lambda^{+}_c \,</math>) ali [[kvark b]] (dobimo barion <math> \Lambda^{0}_b \,</math>) ali [[kvark t]] (dobimo barion <math> \Lambda^{+}_t \,</math>).

Prvi je bil odkrit <math> \Lambda^0 \,</math> v letu [[1947]] pri reakcijah, ki so nastale kot posledica delovanja [[kozmični žarki|kozmičnih žarkov]] <ref>[http://hyperphysics.phy-astr.gsu.edu/hbase/particles/lambda.html Lambda barion na Hyperphysics]</ref>.

== Seznam barionov Λ ==
{| class="wikitable" style="text-align: center;"
|+Lambda baryons
|-
! ime delca
! oznaka
! kvarki
! [[mirovna masa]] ([[Elektronvolt|MeV]]/[[hitrost svetlobe|c]]<sup>2</sup>)
! width="50"|[[izospin|I]]
! width="50"|[[skupna vrtilna količina|J]]<sup>[[parnost (fizika)|P]]</sup>
! width="50"|[[Električni naboj|q]] ([[osnovni naboj|e]])
! width="50"|[[čudnost (fizika)|S]]
! width="50"|[[čar (fizika)|C]]
! width="50"|[[dno (fizika)|B']]
! width="50"|[[vrh (fizika)|T]]
! [[srednji življenjski čas]] <br />([[sekunda|s]])
! razpad
|- style="height:40px"
|align="left"| lambda (Λ)<ref name="Lambda0">C. Amsler et al. (2008): [http://pdg.lbl.gov/2008/listings/s018.pdf Pregled delcev –<math> \Lambda^0 \,</math>]</ref>
| <math> \Lambda^0 \,</math>
| <math> uds \,</math>
| 1115,683&nbsp;±&nbsp;0,006
| 0
| 1/2
| 0
| −1
| 0
| 0
| 0
| 2,631±0,020.10<sup>−10</sup>
| [[proton|p<sup>+</sup>]] + [[pion|π<sup>-</sup>]] ali <br/> [[nevtron|n<sup>0</sup>]] + [[pion|π<sup>0</sup>]]
|- style="height:40px"
|align="left"| lambda (Λ)<br />s čarom<ref name=PDGCharmedLamdba>C. Amsler et al. (2008): [http://pdg.lbl.gov/2008/listings/s033.pdf  Pregled delcev – <math> \Lambda^{+}_c \,</math>]</ref>
| <math> \Lambda^{+}_c \,</math>
| <math>udc \,</math>
| 2286,46&nbsp;±&nbsp;0,14
| 0
| 1/2<sup>+</sup>
| +1
| 0
| +1
| 0
| 0
| 2,00±0,06.10<sup>−13</sup>
| [http://pdg.lbl.gov/2008/listings/s033.pdf  Glej načine razpada<math> \Lambda^{+}_c \,</math>]
|- style="height:40px"
|align="left"| lambda (Λ)<br /> z dnom <ref name=PDGBottomLambda0>C. Amsler et al. (2008): [http://pdg.lbl.gov/2008/listings/s040.pdf  Pregled delcev – <math> \Lambda^{0}_b \,</math>]</ref>
| <math> \Lambda^{0}_b \,</math>
| <math>udb \,</math>
| 5620,2&nbsp;±&nbsp;1,6
| 0
| 1/2<sup>’</sup>
| 0
| 0
| 0
| −1
| 0
| 1,409{{±|0,055|0,054}} × 10<sup>−12</sup>
| [http://pdg.lbl.gov/2008/listings/s040.pdf  Glej načine razpada <math>  \Lambda^{0}_t \,</math>]
|- style="height:40px"
|align="left"| lambda (Λ) <br />z vrhom <sup>{{ref|Undiscovered|†}}</sup>
| <math> \Lambda^{+}_t \,</math>
| <math> udt \,</math>
| —
| 0
| 1/2<sup>+</sup>
| +1
| 0
| 0
| 0
| +1
| —
| —
|-
|}
<sup>†</sup> {{note|Neodkrito}} Delec še ni opažen, predvideva ga [[Standardni model]].

== Opombe in sklici ==
{{opombe}}

== Glej tudi ==
* [[seznam barionov]]

== Zunanje povezave ==
* [http://hyperphysics.phy-astr.gsu.edu/hbase/particles/lambda.html Lambda barion na Hyperphysics] {{ikona en}}

[[Kategorija:Barioni]]
{{normativna kontrola}}