> Do they not show up in all collisions
This is the biggest factor
> why not, wrong matter, wrong speed?
Quantum mechanics is probabilistic. The probability of these particular particles in these particular collisions is very small. So we need to do a lot of collisions in order to have a statistically significant signal.
> but the "camera" has limitations?
Sure. While we regularly upgrade our detectors or build newer, fancier ones, there will always be some limitations.
> but measurement interpretation inefficient?
It's certainly slow. It can take months/years to infer a result from the data. The major bottleneck is people. Even the thousands-strong armies of physicists who work on the LHC experiments would take decades to fully exploit the available datasets.
This is the biggest factor
> why not, wrong matter, wrong speed?
Quantum mechanics is probabilistic. The probability of these particular particles in these particular collisions is very small. So we need to do a lot of collisions in order to have a statistically significant signal.
> but the "camera" has limitations?
Sure. While we regularly upgrade our detectors or build newer, fancier ones, there will always be some limitations.
> but measurement interpretation inefficient?
It's certainly slow. It can take months/years to infer a result from the data. The major bottleneck is people. Even the thousands-strong armies of physicists who work on the LHC experiments would take decades to fully exploit the available datasets.