Observation of the B s 0 $$ {B}_s^0 $$ → D*±D∓ decay
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Author(s)
Aaij, R.
Abellán Beteta, C.
Ackernley, T.
Adeva, B.
Adinolfi, M.
Afsharnia, H.
Aidala, C. A.
Aiola, S.
Ajaltouni, Z.
Akar, S.
Date Issued
March 9, 2021
Publisher
Springer Berlin Heidelberg
Citation
Journal of High Energy Physics. 2021 Mar 09;2021(3):99
Version
Final published version
Abstract
Abstract
A search for the
B
s
0
$$ {B}_{\mathrm{s}}^0 $$
→ D*±D∓ decay is performed using proton-proton collision data at centre-of-mass energies of 7, 8 and 13 TeV collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1. The decay is observed with a high significance and its branching fraction relative to the B0 → D*±D∓ decay is measured to be
ℬ
B
s
0
→
D
∗
±
D
∓
B
0
→
D
∗
±
D
∓
=
0.137
±
0.017
±
0.002
±
0.006
,
$$ \frac{\mathrm{\mathcal{B}}\left({B}_s^0\to {D}^{\ast \pm }{D}^{\mp}\right)}{\left({B}^0\to {D}^{\ast \pm }{D}^{\mp}\right)}=0.137\pm 0.017\pm 0.002\pm 0.006, $$
where the first uncertainty is statistical, the second systematic and the third is due to the uncertainty on the ratio of the
B
s
0
$$ {B}_{\mathrm{s}}^0 $$
and B0 hadronisation fractions.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1007/JHEP03(2021)099
