Precise determination of the B0s-B¯0s oscillation frequency
| Parent link: | Nature Physics Vol. 18, iss. 1.— 2022.— [P. 54-58] |
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| Corporate Authors: | , |
| Other Authors: | , , , , , |
| Summary: | Title screen Mesons comprising a beauty quark and strange quark can oscillate between particle (B0s) and antiparticle (B¯0s) flavour eigenstates, with a frequency given by the mass difference between heavy and light mass eigenstates, Δms. Here we present a measurement of Δms using B0s→D−sπ+ decays produced in proton-proton collisions collected with the LHCb detector at the Large Hadron Collider. The oscillation frequency is found to be Δms = 17.7683 ± 0.0051 ± 0.0032 ps−1, where the first uncertainty is statistical and the second is systematic. This measurement improves on the current Δms precision by a factor of two. We combine this result with previous LHCb measurements to determine Δms = 17.7656 ± 0.0057 ps−1, which is the legacy measurement of the original LHCb detector. |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | http://earchive.tpu.ru/handle/11683/80963 https://doi.org/10.1038/s41567-021-01394-x |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=668951 |