Timeline for $u$-channel in $gg \rightarrow u\bar{u}$
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
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| Feb 16, 2019 at 10:51 | comment | added | Alejandro Celis | The best way to approach this is to write all the diagrams that are consistent (preserve charge conservation for example) with the feynman rules of the theory to the order you are working, doing this notice that you can exchange the initial legs (gluons) while on the QED case you cannot. When building the feynman diagrams, remember the usual convention of drawing arrows on the fermion lines which track the conservation of charge. | |
| Feb 16, 2019 at 0:44 | comment | added | Vicky | So the key is that I can exchange a quark or antiquark in t-channel and this difference respect to my QED example (where photon and anti-photon are the same particle) implies the existence of u-channel? So, u-channel = t-channel with the anti-mediator? | |
| Feb 13, 2019 at 12:40 | review | First posts | |||
| Feb 13, 2019 at 15:46 | |||||
| Feb 13, 2019 at 12:36 | history | edited | Alejandro Celis | CC BY-SA 4.0 |
added 31 characters in body
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| Feb 13, 2019 at 12:35 | history | undeleted | Alejandro Celis | ||
| Feb 13, 2019 at 12:33 | history | deleted | Alejandro Celis | via Vote | |
| Feb 13, 2019 at 12:31 | history | answered | Alejandro Celis | CC BY-SA 4.0 |