Measurement of the shape of the B0s→D∗−sμ+νμ differential decay rate
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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
December 22, 2020
Publisher
Springer Berlin Heidelberg
Citation
Journal of High Energy Physics. 2020 Dec 22;2020(12):144
Version
Final published version
Abstract
Abstract
The shape of the
B
s
0
→
D
s
∗
−
μ
+
ν
μ
$$ {B}_s^0\to {D}_s^{\ast -}{\mu}^{+}{\nu}_{\mu } $$
differential decay rate is obtained as a function of the hadron recoil parameter using proton-proton collision data at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 1.7 fb−1 collected by the LHCb detector. The
B
s
0
→
D
s
∗
−
μ
+
ν
μ
$$ {B}_s^0\to {D}_s^{\ast -}{\mu}^{+}{\nu}_{\mu } $$
decay is reconstructed through the decays
D
s
∗
−
→
D
s
−
γ
$$ {D}_s^{\ast -}\to {D}_s^{-}\gamma $$
and
D
s
−
→
K
−
K
+
π
−
$$ {D}_s^{-}\to {K}^{-}{K}^{+}{\pi}^{-} $$
. The differential decay rate is fitted with the Caprini-Lellouch-Neubert (CLN) and Boyd-Grinstein-Lebed (BGL) parametrisations of the form factors, and the relevant quantities for both are extracted.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1007/JHEP12(2020)144
