The mssm tag has no wiki summary.
8
votes
1answer
46 views
Which is the coupling between the photon and the SU(2)xU(1) gauginos, before symmetry breaking?
The photon field is the non chiral piece of SU(2)xU(1), independently of symmetry breaking or not, isn't it?
But before symmetry breaking, each gauge boson has only a chiral gaugino as ...
7
votes
1answer
375 views
Why is the lightest Higgs not a free parameter in SUSY?
In the Standard Model, the Higgs mass doesn't really have any theoretical constraints. It could have basically any value and nothing 'breaks'.
However, in MSSM models, we often see the tree level ...
6
votes
1answer
104 views
Status of the little hierarchy problem
What is the current thinking on the little hierarchy problem in light of a potential Higgs mass above 120 GeV? A few years ago, at least, I remember various phenomenologists saying that this at least ...
6
votes
1answer
138 views
Where does the hidden supersymmetric sector of the MSSM come from?
At the end of Chapter 14 of the "Supersymmetry Demystified book" from Patrick Labelle it is mentioned that to constrain the number of allowed softly SUSY breaking terms, a shadow or hidden ...
6
votes
2answers
192 views
mSUGRA boundary conditions and the MSSM
I read that in the MSSM with mSUGRA boundary conditions, the mass spectrum of the model is determined by five parameters at the GUT scale: $m_0$ (universal scalar mass), $m_{1/2}$ (universal gaugino ...
3
votes
1answer
78 views
Pauli-Villars (PV) regularisation breaks supersymmetry. How to see that?
Does the PV regulator breaks SUSY?
Take for instance the 1-loop (top/stop loops) correction to the Higgs squared-mass parameter in the MSSM, and you'll get something like,
$$\delta m^2_{h_u} = - ...
3
votes
1answer
150 views
125 Higgs is large (or small) for the MSSM?
As far I as I know, and from Naturalness considerations, a 125 GeV Higgs mass is rather large for the MSSM. This is because in the MSSM $$m_h^2 \lesssim M_z^2 \cos^22\beta + \Delta$$
Where $\Delta$ ...
3
votes
1answer
175 views
Does the Photino have mass or is it mass-less like the photon
Does the photino in super-symmetry have a mass, Or is this different in different super symmetric models?
3
votes
1answer
253 views
Feynman rules for SUSY
This might be an incredibly naive question, but I'm wondering if there are a set of rules for "translating" between Standard Model and SUSY. For instance, if I want want to go from a Standard Model ...
2
votes
1answer
89 views
In MSSM, are the higgs fields eaten by Z,W scalars or pseudoscalars?
I am very puzzled by the quintet of Higgs bosons in the MSSM: two charged, two scalars and a pseudoscalar. I wonder if they could be understood better if they were considered jointly with the three ...
1
vote
1answer
231 views
Missing transverse energy, exact definition
This might seem basic, but it is a bit confusing. You hear about missing transverse energy a lot in SUSY searches due to the LSP which cannot be detected.
Let's say I have the 4-vector for the LSP. ...
1
vote
1answer
65 views
Plot of gauge coupling unification [closed]
About the result of plotting running of 3 coupling constant, we think that we should get the correct one(MSSM).
But we get discontinuity at $ M_{susy}$.
If there something wrong in our formulae?
If ...
