In the Large Hadron Collider (LHC), particle collisions occur within a controlled environment, and the particles are typically accelerated in opposite directions before they collide. The particles circulate in separate beam pipes, and their paths are carefully controlled to ensure collisions at specific interaction points.
In the standard operation of the LHC, particle beams circulate in opposite directions in separate beam pipes, and they are made to collide head-on at the interaction points. The beams are tightly focused and have high velocities, with the particles moving in the same direction within each beam.
It is not possible for particles in the LHC to collide in the manner you described, where one particle is moving to the left and the other particle hits it from behind. The LHC's design and operation are specifically aimed at achieving head-on collisions between particles moving in opposite directions.
The purpose of head-on collisions is to maximize the energy transfer and allow for the production of new particles or the study of particle interactions at high energies. This configuration ensures that the particles collide with sufficient momentum and interact at the highest possible energy scales.
While the LHC is a highly complex and precise machine, collisions involving particles moving in different directions or colliding from non-opposing angles are not part of its operational scheme.