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RE: About my own research: gluons, gluinos and sgluons are not weird creatures from Harry Potter
Going to sound really dumb because I'm no physics expert, but could these observations be larger than expected because of their symmetric counterparts, but those counterparts are hard or impossible to observe if what constitutes gravity can only be detected by having something that can detect backwards in time, which is probably impossible with technology in a universe that goes forward in time?
I will try to answer (as I am not sure to have understood 100% of the question).
The Standard Model predicts the production of four top quarks with some rate, and any collision featuring 4 top quarks have specific properties. Now, some theories extending the Standard Model may include extra contributions to the four-top production rate. It can also screw up the properties of the 4-top collision event.
For the moment, CMS has only measured the production rate of four top quarks. This is hard to measure, because the final state is very busy (once the 4 top quarks have decayed) and that the rate is small (so that one needs to wait long before getting enough statistics). As a result, the error bars are still large, so that there is room for new physics.
However, this being said, this room is not infinite and this is how one gets limits. When the grey band is above the Brazilian band in the last figure, the sgluon contribution is much larger than the room we have. And the corresponding mass hypothesis is excluded.
Finally, gravity does not play any role here. It is negligible. The three other interactions are however important (with the strong force being the most important one).
Does it answer? If not, please come back to me!
I guess gravity really must be negligible otherwise nuclear things wouldn't be so high energy...
The mass hypothesis that's less than the observed mass makes sense.
I guess I was just guessing as to why the observed was higher than the previously calculated or imagined numbers, which must be the strong forces you're talking about.
What is a supersymmetric particle? And how different is it from other particles? Are they elements with a unique biosonic nature?
I’m just trying to understand I’m not a physics inclined person
Supersymmetric particles are just other particles that are connected somehow to the known particle. They are different in the sense they have a different mass and a different spin from their partners. A good reading on supersymmetry can be found in this old post of mine.
Gravity starts to be important at energy scales billions of billions of time higher than at the LHC. Therefore, we still have a long way to go to get there (I am not even sure this will be ever manageable). This being said, researchers are already trying to build theories that would work at these scales (quantum gravity for instance).
I am not sure to have understood the last part of your comment. Sorry ;)
So we'd need some sort of galaxy-sized ultra large collider? Heh.
Oh, I don't understand any of it either, I guess I was just saying that it must be some other forces that are causing the numbers discrepancies between real and expected values.
Something like that :D
Well not necessarily. First, this could just be statistics. Then, it could be other particles not related to new forces, and so on. There are many possible reasons behind some apparent excess or deficit. A human error being one of them ;)
its just gravity is weak compared to whatever makes particles stick together (in short as i came to understand it) so they don't really study it as such at quantum level, its more like a cosmology / astrophysics thing (dont bash me on semantics, im a very un-educated person :))
No, at least based on my limited understanding I think you are correct in what you've said.
o dear
beware my exploding ego now :p
Hahaha
True!
Gravity is both negligible at the level of the elementary particles and does not work at the quantum level. But since any effect would be invisible, it is fine :)
is gravity actually 'known' ? i mean not like defined like time , but is it understood like do you know what causes it , where it originates from ?
The strength of the gravitational interaction is known. From that, we know that whatever is its exact form at the fundamental level, the effect is roughly 0. What do you mean by "originate from"?