Observation of the Bs0 → D*+D*− decay
Authors:
- R. Aaij,
- P. Duda,
- M.M. Duras,
- L.F. Felkowski,
- S. Kubis
Abstract
The first observation of the B0 s → D∗+D∗− decay and the measurement of its branching ratio relative to the B0 → D∗+D∗− decay are presented. The data sample used corresponds to an integrated luminosity of 9 fb−1 of proton-proton collisions recorded by the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV between 2011 and 2018. The decay is observed with more than 10 standard deviations and the time-integrated ratio of branching fractions is determined to be B(Bs0 → D∗+D∗−) / B(B0 → D∗+D∗−) = 0.269 ± 0.032 ± 0.011 ± 0.008 , where the first uncertainty is statistical, the second systematic and the third due to the uncertainty of the fragmentation fraction ratio fs/fd. The Bs0 → D∗+D∗− branching fraction is calculated to be B(Bs0 → D∗+D∗−) = (2.15 ± 0.26 ± 0.09 ± 0.06 ± 0.16) × 10−4 , where the fourth uncertainty is due to the B0 → D∗+D∗− branching fraction. These results are calculated using the average Bs0 meson lifetime in simulation. Correction factors are reported for scenarios where either a purely heavy or a purely light Bs0 eigenstate is considered.
- Record ID
- CUTd27c1942253446e1a23645a1b2ce0c3a
- Publication categories
- ;
- Author
- Journal series
- Journal of High Energy Physics, ISSN 1029-8479, [1126-6708]
- Issue year
- 2023
- Vol
- 2023
- No
- 7
- Pages
- [1-19]
- Article number
- 119
- Other elements of collation
- rys.; tab.; wykr.; Bibliografia (na s.) - 9-11; Bibliografia (liczba pozycji) - 40; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 2023, Iss. 7
- Substantive notes
- Group author: the LHCb collaboration
- Keywords in English
- branching fraction, Hadron-Hadron scattering
- ASJC Classification
- DOI
- DOI:10.1007/JHEP07(2023)119 Opening in a new tab
- URL
- https://link.springer.com/article/10.1007/JHEP07(2023)119 Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 140
- Score source
- journalList
- Score
- Publication indicators
- Additional fields
- Indeksowana w: Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTd27c1942253446e1a23645a1b2ce0c3a/
- URN
urn:pkr-prod:CUTd27c1942253446e1a23645a1b2ce0c3a
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.