- #1
ChrisVer
Gold Member
- 3,378
- 465
Well I am having some difficulty in understanding the running constants... I am not sure if this applies to the Standard Model as well, but I saw that in SUSY recently...
If we take the value of the gaugino masses [itex]m_{\bar{g}},m_{\bar{W}},m_{\bar{B}}[/itex] (by bar I mean Gluino,W-ino and B-ino) to be equal at some energy scale (~MGUT) then we can go to lower energy scales (let's say at TeV) to find their ratio:
[itex]m_{\bar{g}}:m_{\bar{W}}:m_{\bar{B}}≈6:2:1[/itex]
I guess this ratio depends on the model.
My problem is that I don't understand how we can do that, in the case the SuSy breakdown occurs at lower energies than M_GUT... While SuSy is unbroken, the gauginos will have to be massless, right? If the breakdown occurs at around 2TeV let's say, then it's meaningless to speak about their masses...
If we take the value of the gaugino masses [itex]m_{\bar{g}},m_{\bar{W}},m_{\bar{B}}[/itex] (by bar I mean Gluino,W-ino and B-ino) to be equal at some energy scale (~MGUT) then we can go to lower energy scales (let's say at TeV) to find their ratio:
[itex]m_{\bar{g}}:m_{\bar{W}}:m_{\bar{B}}≈6:2:1[/itex]
I guess this ratio depends on the model.
My problem is that I don't understand how we can do that, in the case the SuSy breakdown occurs at lower energies than M_GUT... While SuSy is unbroken, the gauginos will have to be massless, right? If the breakdown occurs at around 2TeV let's say, then it's meaningless to speak about their masses...