Measurement of the shape of the B0s→D∗−sμ+νμ differential decay rate

Abstract The shape of the B s 0 →...

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., Albicocco, P., 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/1721.1/131958

Description
Summary:	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.

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