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skydivephil
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If there is super symmetric partner of the Higgs could it in principle be dectected at the lHc? if so what sort of decay products would be seen?
I'm confused! The Higgsino, if it exists, is not at all Higgs-like. For one thing, it's a fermion.mfb said:There are searches for Higgsinos and other exotic Higgs-like particles.
How is the Higgsino related to electroweak symmetry breaking?mfb said:Similar mass (if it can be detected), no electric charge, related to EWSB. Similar enough for me.
Sorry, a spin-1/2 Higgsino cannot mediate a Yukawa interaction between leptons. All of these interaction terms are supersymmetric, which means for example that the Higgsino instead couples a lepton to a slepton. And likewise while a Higgs can decay into two photons, the corresponding Higgsino decay would involve instead a photino. So while from the SUSY point of view these properties are "the same", in practice they are quite different.So a higgsino will have Higgs-like interactions: electroweak ones with the photon, W, and Z, and Yukawa ones with the elementary fermions in proportion to those particles' masses. Likewise for other SUSY partners.
Even though squarks and gluinos may be more easily produced, they'll promptly decay into the lightest supersymmetric partners, namely the neutralinos.So it'll be much harder to find evidence of neutralinos and charginos than of squarks and gluinos. Comparable with the difficulty in finding the Higgs particle.
A Higgsino is a hypothetical particle predicted by the Standard Model of particle physics. It is a type of neutralino, which is a type of supersymmetric partner particle. The Large Hadron Collider (LHC) is a particle accelerator that is designed to probe the fundamental particles and interactions predicted by the Standard Model, including the Higgsino.
Higgsinos are difficult to detect directly because they are neutral and do not interact strongly with other particles. However, they can be detected indirectly through their decay products, which can be observed by the detectors at the LHC. The specific signatures of Higgsino decays would differ from those of other particles, allowing scientists to identify them.
The detection of a Higgsino at the LHC would provide evidence for the existence of supersymmetry, a theory that proposes a symmetry between bosons and fermions. It would also provide insights into the nature of dark matter, as Higgsinos are considered potential candidates for dark matter particles.
So far, no Higgsino candidates have been observed at the LHC. However, the search for Higgsinos is ongoing, and the LHC continues to collect data in the hopes of finding evidence of their existence.
One challenge in detecting Higgsinos is that they are expected to have a relatively long lifetime, meaning they may travel a short distance before decaying. This can make it difficult to distinguish their decay products from other particles in the detector. Additionally, the production rate of Higgsinos at the LHC is expected to be low, making it a rare and challenging event to detect.