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Questions tagged [supersymmetric-particles]

Should be used in the context of supersymmetry. A sparticle is also known as a superpartner. Can be used in questions asking the connection between supersymmetry and superstring theory if sparticles are mentioned in the question. Can be used in questions about finding sparticles in the LHC.

A sparticle (also known as superpartner) is a hypothetical elementary particle. Supersymmetry (SUSY) predicts the existence of these "shadow particles". Below is a diagram comparing normal particles and Supersymmetric particles:

supersymmetric particles

12 questions
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What does the discovery of the Higgs boson mean for SUSY?

I've seen many differing opinions on how the discovery of the Higgs boson (specifically due to its mass) has effected theories of Super Symmetry, but all seem fairly biased. I'm wondering if someone could explain which SUSY models are invalidated…
Connor
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2 answers

Can a superpartner be less massive than its SM counterpart?

Theoretically, can a superpartner be less massive than its standard model counterpart? I realize there are experimental constraints.
user1247
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1 answer

How to find SUSY with near-degenerate masses?

In SUSY models, you can have the case that sparticles and their decay products have near-degenerate masses. For example $$ m(\tilde \chi^\pm_1) - m(\tilde \chi^0_1) < 1\,\mathrm{GeV}$$ Then in the leptonic decay mode $$ \tilde \chi^\pm_1 \rightarrow…
jdm
  • 4,277
6
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1 answer

Global spontaneusly broken symmetry and SUSY breaking: a "scalar companion" of the Goldstone boson

I was reading the article "Dynamical Supersymmetry Breaking" by Yael Shadmi and Yuri Shirman. In particular i was studing the relation between the presence of a global continus spontaneusly broken symmetry and SUSY breaking. All it's clear, except…
SuperBaba
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2 answers

Sparticles: Relationship to supersymmetry and dark matter?

I was attempting to read this paper after watching a show with Brian Greene. As I understand it, sparticles are a prediction of supersymetry, so I was wondering: Wouldn't the discovery of supersymmetry lend validity to string theory? Isn't this a…
Larian LeQuella
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3
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0 answers

How Supersymmetry solves the hierarchy problem

The fermion contribution to the Higgs mass is $$\Delta m^2_{H}=-\frac{|\lambda_{f}|^2}{8\pi^2}\Lambda^2_{UV}+\dots$$ And the scalar contribution is: $$\Delta m^2_{H}=\frac{\lambda_{s}}{16\pi^2}\Lambda^2_{UV}+\dots$$ Summing up: $$\Delta…
AWanderingMind
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3
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1 answer

With the LHC about to restart as max energy, are there absolutely no hints or tantalizing signs of Supersymmetry in previous data?

Over the last couple of years I've seen several articles talk about hints or bumps in the data that might point to Supersymmetry. An article in NewScientist from Summer 2012 discussed the discovery of the Higgs at 125 GeV as providing some support…
Pete1187
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2
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1 answer

Is a meV POSITIVE cosmological constant coherent with supersymmetry, supergravity or superstrings?

Context: 2024 evidence of positive cosmological constant, lack of supersymmetry evidences, value of ~meV for the energy scale of the observed cosmological constant. Is a positive cosmological constant a hint that superstrings, supergravity, ...at…
riemannium
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2
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1 answer

Why is a static potential between supergravitons problematic?

When deriving the one and two-loop result for the effective potential between two scattering supergravitons, for example from here, we see that it is always a velocity dependent potential. Supersymmetric cancellations between bosonic and fermionic…
saad
  • 1,125
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How does spontaneous supersymmetry breaking lead to different masses between superpartners?

For the past few days I've been studying supersymmetric quantum mechanics. My main sources that I use are David Tong's lecture notes on supersymmetric quantum mechanics, as well as Edward Witten's paper titled "Supersymmetry and Morse theory". As of…
luki luk
  • 139
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${\cal N}=2$ SUSY Multiplet

In https://www.physics.uci.edu/~tanedo/files/notes/SUSYXD.pdf, on page 47, I found that for ${\cal N}=2$ SUSY (massless representation), we start with a state $|\Omega\rangle$ with helicity $\lambda_0=0$ and then apply the SUSY generators, we have…
Alex
  • 97
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Question on the life-time of a super-symmetric particle

I was watching a random video on SUSY. In the video, they were discussing that SUSY explains dark matter. That DM is probably a SUSY particle. How is this possible? We know that the life of a Top Quark is so short because of its mass. How could…
Rick
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