Measurement of the ratio of branching fractions B B c + → B s 0 π + / B B c + → J / ψ π + $$ \mathcal{B}\left({B}_c^{+}\to {B}_s^0{\pi}^{+}\right)/\mathcal{B}\left({B}_c^{+}\to J/\psi {\pi}^{+}\right) $$
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Author(s)
Aaij, R.
Abdelmotteleb, A. S. W.
Abellan Beteta, C.
Abudinén, F.
Ackernley, T.
Adeva, B.
Adinolfi, M.
Adlarson, P.
Afsharnia, H.
Agapopoulou, C.
Date Issued
July 7, 2023
Publisher
Springer Berlin Heidelberg
Citation
Journal of High Energy Physics. 2023 Jul 07;2023(7):66
Version
Final published version
Abstract
Abstract
The ratio of branching fractions of
B
c
+
→
B
s
0
π
+
$$ {B}_c^{+}\to {B}_s^0{\pi}^{+} $$
and
B
c
+
→
J
/
ψ
π
+
$$ {B}_c^{+}\to J/\psi {\pi}^{+} $$
decays is measured with proton-proton collision data of a centre-of-mass energy of 13 TeV. The data were collected with the LHCb experiment during 2016–2018, corresponding to an integrated luminosity of 5.4 fb−1. The
B
s
0
$$ {B}_s^0 $$
mesons are reconstructed via the decays
B
s
0
→
J
/
ψϕ
$$ {B}_s^0\to J/\psi \phi $$
and
B
s
0
→
D
s
−
π
+
$$ {B}_s^0\to {D}_s^{-}{\pi}^{+} $$
. The ratio of branching fractions is measured to be
B
B
c
+
→
B
s
0
π
+
/
B
B
c
+
→
J
/
ψ
π
+
=
91
±
10
±
8
±
3
$$ \mathcal{B}\left({B}_c^{+}\to {B}_s^0{\pi}^{+}\right)/\mathcal{B}\left({B}_c^{+}\to J/\psi {\pi}^{+}\right)=91\pm 10\pm 8\pm 3 $$
where the first uncertainty is statistical, the second is systematic and the third is due to the knowledge of the branching fractions of the intermediate state decays.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1007/JHEP07(2023)066
