In this case, a dependence on the orientation of the experiment would mean that the rate at which top-quark pairs are produced in proton–proton collisions at the LHC would vary with time.

On March 2, 1995, the top quark discovery at Fermilab was announced by scientists on the CDF and DZero collaborations, and ...

In their new result, ATLAS physicists studied collisions of lead ions that took place at a collision energy of 5.02 teraelectronvolts (TeV) per nucleon pair during Run 2 of the LHC.

not neutron-neutron or proton-proton pairs. This pattern had already been shown in nuclear physics data, so seeing it replicated here in a model built on the quark-gluon description of nuclei ...

which are quark-antiquark pairs. The proton and neutron, the only strong-force particles to have much of a permanent existence in our current world, are both baryons, with the quark configurations ...

Thus, if there is a preferred direction in space-time and signs of Lorentz symmetry breaking, there should be a deviation from a constant rate of top quark pair production in the LHC dependent on ...

Compared with the top–antitop process, the production of a single top has a smaller cross-section, and the presence of only one heavy top quark in the events makes this process much more ...

The CMS team set about searching for such remnants of Lorentz symmetry breaking using pairs of nature's heaviest elementary particle, the top quark. Breaking space news, the latest updates on ...