Timeline for The norm of the vector sum of two 4-momentum vectors before and after pair production
Current License: CC BY-SA 3.0
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 12, 2015 at 20:21 | comment | added | Timaeus | @mv311 You are correct. | |
| Jun 12, 2015 at 18:39 | comment | added | dualredlaugh | I see. The invariant mass of a system includes contributions from the kinetic energy of each particle even if their respective rest-masses are 0. To be in the center of mass frame (total momentum 0) of the two photons before collision, would you need a frame that is moving as such that the doppler shift would result in equal frequencies for each of the photons? | |
| Jun 12, 2015 at 17:41 | history | answered | Timaeus | CC BY-SA 3.0 |