$Observation of the B s 0 $$ {B}_s^0 $$ → D*±D∓ decay$

Observation of the B s 0 $$ {B}_s^0 $$ → D*±D∓ decay

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Abstract A search for the B s 0 $$ {B}_{\mathrm{s...

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Bibliographic Details
Main Authors:	Aaij, R., Abellán Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., Aidala, C. A., Aiola, S., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Alfonso Albero, A., Aliouche, Z., Alkhazov, G.
Other Authors:	Massachusetts Institute of Technology. Department of Physics
Format:	Article
Language:	English
Published:	Springer Berlin Heidelberg 2021
Online Access:	https://hdl.handle.net/1721.1/132054

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Summary:	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.