Precise determination of the Bs0 – B¯s0 oscillation frequency

Aaij, R; Beteta, CA; Ackernley, T; Adeva, B; Adinolfi, M; Afsharnia, H; Aidala, CA; Aiola, S; Ajaltouni, Z; Akar, S; Albrecht, J; Alessio, F; Alexander, M; Albero, AA; Aliouche, Z; Alkhazov, G; Cartelle, PA; Amato, S; Amhis, Y; An, L; Anderlini, L; Andreianov, A; Andreotti, M; Archilli, F; Artamonov, A; Artuso, M; Arzymatov, K; Aslanides, E; Atzeni, M; Audurier, B; Bachmann, S; Bachmayer, M; Back, JJ; Rodriguez, PB; Balagura, V; Baldini, W; Leite, JB; Barlow, RJ; Barsuk, S; Barter, W; Bartolini, M; Baryshnikov, F; Basels, JM; Bassi, G; Batsukh, B; Battig, A; Bay, A; Becker, M; Bedeschi, F; Bediaga, I; Beiter, A; Belavin, V; Belin, S; Bellee, V; Belous, K; Belov, I; Belyaev, I; Bencivenni, G; Ben-Haim, E; Berezhnoy, A; Bernet, R; Berninghoff, D; Bernstein, HC; Bertella, C; Bertolin, A; Betancourt, C; Betti, F; Bezshyiko, I; Bhasin, S; Bhom, J; Bian, L; Bieker, MS; Bifani, S; Billoir, P; Birch, M; Bishop, FCR; Bitadze, A; Bizzeti, A; Bjørn, M; Blago, MP; Blake, T; Blanc, F; Blusk, S; Bobulska, D; Boelhauve, JA; Garcia, OB; Boettcher, T; Boldyrev, A; Bondar, A; Bondar, N; Borghi, S; Borisyak, M; Borsato, M; Borsuk, JT; Bouchiba, SA; Bowcock, TJV; Boyer, A; Bozzi, C; Bradley, MJ; Braun, S

View / Open Files

Bibliographic metadata (XML, 401Kb)

Published version (PDF, 2Mb)

Authors

Aaij, R

Beteta, CA

Ackernley, T

Adeva, B

Adinolfi, M

Afsharnia, H

Aidala, CA

Publication Date

2022-01

Journal Title

Nature Physics

ISSN

1745-2473

Publisher

Springer Science and Business Media LLC

Volume

Issue

Pages

1-5

Language

Type

Article

This Version

VoR

Metadata

Show full item record

Citation

Aaij, R., Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., Aidala, C., et al. (2022). Precise determination of the Bs0 – B¯s0 oscillation frequency. Nature Physics, 18 (1), 1-5. https://doi.org/10.1038/s41567-021-01394-x

Abstract

Mesons comprising a beauty quark and a strange quark can oscillate between particle (B0s) and antiparticle (B0s) flavour eigenstates, with a frequency given by the mass difference between heavy and light mass eigenstates, deltams. Here we present ameasurement of deltams using B0s2DsPi decays produced in proton-proton collisions collected with the LHCb detector at the Large Hadron Collider. The oscillation frequency is found to be deltams = 17.7683 +- 0.0051 +- 0.0032 ps-1, where the first uncertainty is statistical and the second systematic. This measurement improves upon the current deltams precision by a factor of two. We combine this result with previous LHCb measurements to determine deltams = 17.7656 +- 0.0057 ps-1, which is the legacy measurement of the original LHCb detector.

Keywords

Article, /639/766/419/1131, /639/766/419/1132, /119, article

Identifiers

s41567-021-01394-x, 1394

External DOI: https://doi.org/10.1038/s41567-021-01394-x

This record's URL: https://www.repository.cam.ac.uk/handle/1810/333197

Rights

Licence:

http://creativecommons.org/licenses/by/4.0/

Statistics

Total file downloads (since January 2020). For more information on metrics see the IRUS guide.