![beauty quark beauty quark](https://d3i71xaburhd42.cloudfront.net/629865f66905cf404cb03b4943219750bebaabbc/29-Figure2.13-1.png)
That is, even though it appears that the laws of physics (as we know them today) treat matter and antimatter about the same, the fact that the Universe has almost no antimatter contradicts this supposition. It is believed that precise studies of such phenomena can give insight into why the Universe is composed almost entirely of matter, and almost no antimatter. CP refers to the process of applying charge conjugation and parity to a given decay process. One of the key reasons to capture both the decay products of both the b and b is to study CP violation. A cartoon of the LHCb detector is shown below. Link Thus, to maximize the physics potential of such an experiment, the LHCb detector is built in the “forward” direction, namely covering small angles with respect to the beamline.
![beauty quark beauty quark](https://www.galerie-com.com/grand_img/0353745001272391759.jpg)
Thus, if a detector is built to cover the forward region, say up to 350 mrad, one will capture a large fraction of events in which both the b and b are in the detector’s active region. Or, if one b-quark has angle close to 180 o, so does the other. It shows that when one of the b-quarks has small angle, the other one usually does too. The figure below shows the angle of the b quark versus the angle of the b quark in 7 TeV center-of-mass energy pp collisions. A key feature of b b production at the LHC is the correlation between the angle of the b and b quarks in the proton-proton (pp) collision. LHCb is a general purpose experiment that specializes in the study of particles that contain beauty or charm quarks.