Abstract
The LHCb collaboration has presented first experimental evidence that spin-carrying matter and antimatter differ. The study looked at four-body decays of the {{boldsymbol{Lambda }}}_{{boldsymbol{b}}}^{{bf{0}}} baryon. Differences in the behaviour of matter and antimatter are associated with the non-invariance of fundamental interactions under the combined charge-conjugation and parity transformations, known as CP violation. We discuss purely baryonic decay processes, i.e. decay processes involving only spin-carrying particles. They are yet unexplored elementary processes. Their study opens a new chapter of flavour physics in the route towards a better understanding of CP violation. It may help us understand the observed matter and antimatter asymmetry of the Universe.
Highlights
The LHCb collaboration has presented first experimental evidence that spin-carrying matter and antimatter differ
Differences in the behaviour of matter and antimatter are associated with the non-invariance of fundamental interactions under the combined charge-conjugation and parity transformations, known as CP violation
We here focus our attention on the final states that are easiest to reconstruct experimentally, in full, having in mind that the LHCb collaboration is the only running experiment capable of performing the search for these processes
Summary
The LHCb collaboration has presented first experimental evidence that spin-carrying matter and antimatter differ. We discuss purely baryonic decay processes, i.e. decay processes involving only spin-carrying particles Their study opens a new chapter of flavour physics in the route towards a better understanding of CP violation It may help us understand the observed matter and antimatter asymmetry of the Universe. The LHCb collaboration has presented first experimental evidence that spin-carrying matter and antimatter differ[1]. Any CP violating effects may have a more direct correspondence to the long-standing puzzle of the matter-antimatter asymmetry These yet unexplored elementary processes may hold key information in much the same way that the study of CP violation with B mesons provided a more comprehensive understanding of CP violation once it got established in the decay of neutral kaons. Theoretical predictions are provided for some decay branching fractions and, in some cases, for the CP violating asymmetries
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
