Details

Autor(en) / Beteiligte

• Akar, S
• Alkhazov, G
• Andreotti, M
• Archilli, F
• Artamonov, A
• Audurier, B
• Belin, S
• Belous, K
• Belov, I
• Belyaev, I
• Bertolin, A
• Bezshyiko Ia
• Bhasin, S
• Bishop, F C
• Boettcher, T
• Boyer, A
• Bursche, A
• Butter, J S
• Carus, L
• Cattaneo, M
• Charles, M
• Chen, S
• Chobanova, V
• Chrzaszcz, M
• Cicala, M F
• Cobbledick, J L
• Coco, V
• Coelho J A B
• Contu, A
• Currie, R
• H-P, Dembinski
• Di, Nezza P
• Dobishuk, V
• Duk, V
• Dziurda, A
• Dzyuba, A
• Eschle, J
• Féo, M
• Fiorini, M
• Geertsema, R E
• Gerick, D
• Gerken, L L
• Gersabeck, M
• Giemza, H K
• Giugliano, C
• Gromov, S
• Haimberger, J
• Halewood-leagas, T
• Hammerich, J P
• Han, Q
• Hancock, T H
• Hecker, M
• Huang, X
• Jans, E
• Jezabek, M
• Kravchenko, P
• Kreps, M
• Li L
• Lupton, O
• Mariani, S
• Marshall, P J
• Materok, M
• Merk, M
• Milovanovic, M
• Mombächer, T
• Morris, A G
• Müller, K
• Palano, A
• Petric, M
• Polukhina, N
• Poslavskii, S
• Trejo R I Rabadan
• Ren, Z
• Rodrigues, A B
• Saitta, B
• Santimaria, M
• Satriano, C
• Schune, M H
• Sciascia, B
• Sestini, L
• Shapkin, M
• Shupperd, J D
• Solovev, A
• Solovyev, I
• Spaan, B
• Spradlin, P
• Stenyakin, O
• Sun, Y
• Tisserand, V
• Van Dijk M
• Van Hulse C B
• Vecchi, S
• Veltri, M
• Veronesi, M
• Voropaev, N
• Wilkinson, G
• Yang, Z
• Zhang, D
• Zhou, Y
• Zhu, Z

Titel

Precise determination of the Bs0–B¯s0 oscillation frequency

Ist Teil von

• Nature physics, 2022-01, Vol.18 (1), p.1-5

Ort / Verlag

London: Nature Publishing Group

Erscheinungsjahr

2022

Link zum Volltext

Quelle

Nature Journals

Beschreibungen/Notizen

• Mesons comprising a beauty quark and strange quark can oscillate between particle (Bs0) and antiparticle (B¯s0) 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 Bs0→Ds−π+ 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.The LHCb collaboration reports an improved measurement of the oscillation frequency of mesons consisting of a bottom quark and strange quark, which is then combined with previous results.