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Observation of the B0s → D*+D*− decay
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The LHCb collaboration (Including:
). (2023) Observation of the B0s → D*+D*− decay. Journal of High Energy Physics, 2023 . 119. doi:10.1007/JHEP07(2023)119 ISSN 1029-8479.
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JHEP07(2023)119.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (690Kb) | Preview |
Official URL: https://doi.org/10.1007/JHEP07(2023)119
Abstract
The first observation of the B0s
→ 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(B0s→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 B0s
→ D*+D*− branching fraction is calculated to be
B(B0s→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 B0s
meson lifetime in simulation. Correction factors are reported for scenarios where either a purely heavy or a purely light B0s
eigenstate is considered.
Item Type: | Journal Article | ||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||
Journal or Publication Title: | Journal of High Energy Physics | ||||||
Publisher: | Springer | ||||||
ISSN: | 1029-8479 | ||||||
Official Date: | 13 July 2023 | ||||||
Dates: |
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Volume: | 2023 | ||||||
Article Number: | 119 | ||||||
DOI: | 10.1007/JHEP07(2023)119 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||
Date of first compliant deposit: | 6 September 2023 | ||||||
Date of first compliant Open Access: | 6 September 2023 |
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