According to physicist organization network reported, the European nucleon Research Center today in the "Physical Review Letters" to submit a report, the Large Hadron Collider Experiment (LHCb) bottom quark was first observed matter-antimatter asymmetry in the decay of B0s particles in the. This is the fourth known subatomic particles exhibit this behavior.
LHCb is one of the six detectors on the LHC, the main goal is to measure the CP damage and the new physics in B in hadrons. "CP" is the charge conjugation (Charge conjugation) and parity (Parity) initials combination. Charge conjugation symmetry is often called the particle symmetry.
Most physicists believe that, the big bang at the beginning is in the state of matter and antimatter symmetry. But the astronomical observations show that, today's universe is matter primarily. This raises the question: antimatter in the universe where to go? At present, there is no complete answer, but physicists think generally, CP symmetry breaking is one of the key to solve the problem. Because the CP symmetry breaking that matter and antimatter exist the nuances involved in the interaction, it is this difference, plus some other conditions, eventually led to a number of difference between them. In this sense, we this a riot of colours of the material world, including human beings, are the remains of the tiny CP symmetry breaking left.
The large hadron collider has been nuances for particles and antiparticles behavior. The LHCb experiment has been observed in the B0s decay particles in the CP failure, it is analyzed based on data collected in 2011 made experiments on. LHCb spokesman Pierluigi Campana said: "the discovery of asymmetric reaction more than 5 sigma level in the B0s particles, the results due to the Large Hadron Collider data and LHCb detector for particle discrimination ability. While in other places can not be accumulated to the decay of B0s enough."
In the nineteen sixties, the United States Brook of Brookhaven National Laboratory for the first time in is called the neutral K meson observed in violation of CP symmetry. About 40 years later, Japan and the United States of America in the experiment in another particle B0 meson find similar behavior. Recently, found in the so-called B meson factories and CERN LHCb experiments, B+ meson also demonstrates CP damage. All of these can occupy a space for one person CP failure phenomenon in the standard model, but these intriguing differences, also need to study in more detail.