- #1
hesus
- 5
- 0
Hi,
i have the following exercise:
At the HERA acceleratro of DESY in Hamburg electrons and protons were accelerated to E_e=27.5 GeV and E_p = 920GeV and brought to collision.
A)How large is the reaction energy in the centre-of-mass system?
B) What is the velocity of the HERA centre-of-mass System in the lab system?
A) I think the CMS is defined by[tex]\vec{p}[/tex]_e +[tex]\vec{p}[/tex]_p=0, am i right? ([tex]\vec{p}[/tex] is the three-momentum.
Therefore, i can calculated the sum of the two four-momentum.
[tex]s=(p_p+p_e)^2= (E_p+E_e)^2 [/tex]
Reaction energy ist then sqrt(E).
B) How can i solve this?
Thank you.
i have the following exercise:
At the HERA acceleratro of DESY in Hamburg electrons and protons were accelerated to E_e=27.5 GeV and E_p = 920GeV and brought to collision.
A)How large is the reaction energy in the centre-of-mass system?
B) What is the velocity of the HERA centre-of-mass System in the lab system?
A) I think the CMS is defined by[tex]\vec{p}[/tex]_e +[tex]\vec{p}[/tex]_p=0, am i right? ([tex]\vec{p}[/tex] is the three-momentum.
Therefore, i can calculated the sum of the two four-momentum.
[tex]s=(p_p+p_e)^2= (E_p+E_e)^2 [/tex]
Reaction energy ist then sqrt(E).
B) How can i solve this?
Thank you.