Measurement of the shape of the $B_s^0\to D_s^{\ast -}{\mu }^{+}{\nu }_{\mu }$ differential decay rate

Abstract

The shape of the $B_s^0\to D_s^{\ast -}{\mu }^{+}{\nu }_{\mu }$ differential decay rate is obtained as a function of the hadron recoil 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 $B_s^0\to D_s^{\ast -}{\mu }^{+}{\nu }_{\mu }$ decay is reconstructed through the decays $D_s^{\ast -}\to D_s^{-}\gamma$ and $D_s^{-}\to K^{-}{K}^{+}{\pi }^{-}$. 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.

arXiv commentAll figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2019-046.html (LHCb public pages)

References in corpus (36)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• A Brief Introduction to PYTHIA 8.1
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of summer 2016
• LHCb Detector Performance
• sPlot: a statistical tool to unfold data distributions
• FLAG Review 2019
• The LHCb Trigger and its Performance in 2011
• Performance of the LHCb RICH detector at the LHC
• SVD Approach to Data Unfolding
• On the B to D* tau nu Sensitivity to New Physics
• Performance of the LHCb Vertex Locator
• Constraints on Form Factors For Exclusive Semileptonic Heavy to Light Meson Decays
• Performance of the LHCb muon system
• Precision Corrections to Dispersive Bounds on Form Factors
• Revisiting $B\to D\ell \nu$
• $R(D^{\ast })$, $|V_{cb}|$, and the Heavy Quark Symmetry relations between form factors
• Determination of the quark coupling strength $|V_{ub}|$ using baryonic decays
• Improved performance of the LHCb Outer Tracker in LHC Run 2
• A fresh look at the determination of |V_cb| from B-> D^* l nu
• Measurement of the fragmentation fraction ratio $f_s/f_d$ and its dependence on $B$ meson kinematics
• The $V_{cb}$ puzzle: an update
• Model-Independent Extraction of |V_{cb}| Using Dispersion Relations
• Measurement of the CKM Matrix Element $|V_{cb}|$ from $B^0\to D^{\ast -}{\ell }^{+}{\nu }_{\ell }$ at Belle
• Model-Independent Extraction of $|V_{cb}|$ from $\bar{B}\to D^{\ast }\ell \overline{\nu }$
• Theory determination of $\bar{B}\to D^{(\ast )}{\ell }^{-}\bar{\nu }$ form factors at $\mathcal{O}(1/m_c^2)$
• Heavy-Quark Expansion for ${\bar{B}}_s\to D_s^{(\ast )}$ Form Factors and Unitarity Bounds beyond the $SU(3{)}_F$ Limit
• Lattice QCD calculation of the $B_{(s)}\to D_{(s)}^{\ast }\ell \nu$ form factors at zero recoil and implications for $|V_{cb}|$
• Measurements of the Semileptonic Decays $\Bb\to D\ell\nub$ and $\Bb\to D^*\ell\nub$ Using a Global Fit to $D X\ell\nub$ Final States
• Lattice QCD form factor for $B_s\to D_s^{\ast }l\nu$ at zero recoil with non-perturbative current renormalisation
• $B_s\to D_s\ell \nu$ Form Factors and the Fragmentation Fraction Ratio $f_s/f_d$
• A precise measurement of the $B^0$ meson oscillation frequency
• Measurement of $f_s/f_u$ variation with proton-proton collision energy and $B$-meson kinematics
• Reconstruction of semileptonically decaying beauty hadrons produced in high energy pp collisions
• Impacts of radiative corrections on measurements of lepton flavour universality in $B\to D\ell {\nu }_{\ell }$ decays
• Continuity and Semileptonic $B_{(s)}\to D_{(s)}$ Form Factors

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• $|V_{cb}|$, Lepton Flavour Universality and $SU(3{)}_F$ symmetry breaking in $B_s\to D_s^{(\ast )}\ell {\nu }_{\ell }$ decays through unitarity and lattice QCD
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