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1.	First Observation of the Radiative Decay $Λ_{b}^{0} \to Λ γ$ / Aaij, R. ; Abellán Beteta, C. ; Adeva, B. ; Adinolfi, M. ; et al The radiative decay $Λ_{b}^{0} \to Λ γ$ is observed for the first time using a data sample of proton-proton collisions corresponding to an integrated luminosity of $1.7 {fb}^{- 1}$ collected by the LHCb experiment at a center-of-mass energy of 13 TeV. [...] Published in Physical Review Letters 123 (2019) 10.1103/PhysRevLett.123.031801 External links: pdf; xml
2.	Near-threshold D D ¯ $$ \mathrm{D}\overline{\mathrm{D}} $$ spectroscopy and observation of a new charmonium state / Aaij, R. ; Abellán Beteta, C. ; Adeva, B. ; Adinolfi, M. ; et al Using proton-proton collision data, corresponding to an integrated luminosity of 9 fb −1 , collected with the LHCb detector between 2011 and 2018, a new narrow charmonium state, the X(3842) resonance, is observed in the decay modes X 3842 → D 0 D ¯ 0 $$ \mathrm{X}(3842)\to {D}^0{\overline{D}}^0 $$ and X(3842) → D + D − [...] Published in JHEP 1907 (2019) 035 10.1007/JHEP07(2019)035 arXiv:1903.12240 Fulltext: XML PDF (PDFA);
3.	Amplitude analysis of the B s 0 → K ∗ 0 K ¯ ∗ 0 $$ {B}_{(s)}^0\to {K}^{\ast 0}{\overline{K}}^{\ast 0} $$ decays and measurement of the branching fraction of the B 0 → K ∗ 0 K ¯ ∗ 0 $$ {B}^0\to {K}^{\ast 0}{\overline{K}}^{\ast 0} $$ decay / Aaij, R. ; Abellán Beteta, C. ; Adeva, B. ; Adinolfi, M. ; et al The B 0 → K ∗ 0 K ¯ ∗ 0 $$ {B}^0\to {K}^{\ast 0}{\overline{K}}^{\ast 0} $$ and B s 0 → K ∗ 0 K ¯ ∗ 0 $$ {B}_s^0\to {K}^{\ast 0}{\overline{K}}^{\ast 0} $$ decays are studied using proton-proton collision data corresponding to an integrated luminosity of 3 fb −1 . [...] Published in JHEP 1907 (2019) 032 10.1007/JHEP07(2019)032 arXiv:1905.06662 Fulltext: XML PDF (PDFA);
4.	Amplitude analysis of B s 0 → K S 0 K ± π ∓ decays / Aaij, R. ; Abellán Beteta, C. ; Adeva, B. ; Adinolfi, M. ; et al The first untagged decay-time-integrated amplitude analysis of B s 0 → K S 0 K ± π ∓ decays is performed using a sample corresponding to 3.0 fb −1 of pp collision data recorded with the LHCb detector during 2011 and 2012. [...] Published in JHEP 1906 (2019) 114 10.1007/JHEP06(2019)114 arXiv:1902.07955 Fulltext: XML PDF (PDFA);
5.	Measurement of the Mass Difference Between Neutral Charm-Meson Eigenstates / Aaij, R. ; Abellán Beteta, C. ; Adeva, B. ; Adinolfi, M. ; et al We report a measurement of the mass difference between neutral charm-meson eigenstates using a novel approach that enhances sensitivity to this parameter. [...] Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.231802 External links: pdf; xml
6.	Observation of an Excited $B_{c}^{+}$ State / Aaij, R. ; Abellán Beteta, C. ; Adeva, B. ; Adinolfi, M. ; et al Using $p p$ collision data corresponding to an integrated luminosity of $8.5 {fb}^{- 1}$ recorded by the LHCb experiment at center-of-mass energies of $\sqrt{s} = 7$ , 8, and 13 TeV, the observation of an excited $B_{c}^{+}$ state in the $B_{c}^{+} π^{+} π^{-}$ invariant-mass spectrum is reported. [...] Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.232001 External links: pdf; xml
7.	Observation of a Narrow Pentaquark State, $P_{c} (4312)^{+}$ , and of the Two-Peak Structure of the $P_{c} (4450)^{+}$ / Aaij, R. ; Abellán Beteta, C. ; Adeva, B. ; Adinolfi, M. ; et al A narrow pentaquark state, $P_{c} (4312)^{+}$ , decaying to $J / ψ p$ , is discovered with a statistical significance of $7.3 σ$ in a data sample of $Λ_{b}^{0} \to J / ψ p K^{-}$ decays, which is an order of magnitude larger than that previously analyzed by the LHCb Collaboration. [...] Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.222001 External links: pdf; xml
8.	*Measurement of the relative $B^{-} \to D^{0} / D^{ 0} / D^{* * 0} μ^{-} {\bar{ν}}_{μ}$ branching fractions using $B^{-}$ mesons from ${\bar{B}}_{s 2}^{* 0}$ decays** / Aaij, R. ; Adeva, B. ; Adinolfi, M. ; Aidala, C. A. ; et al The decay of the narrow resonance ${\bar{B}}_{s 2}^{* 0} \to B^{-} K^{+}$ can be used to determine the $B^{-}$ momentum in partially reconstructed decays without any assumptions on the decay products of the $B^{-}$ meson. [...] Published in Physical Review D 99 (2019) 10.1103/PhysRevD.99.092009 External links: pdf; xml
9.	Observation of $C P$ Violation in Charm Decays / Aaij, R. ; Abellán Beteta, C. ; Adeva, B. ; Adinolfi, M. ; et al A search for charge-parity ( $C P$ ) violation in $D^{0} \to K^{-} K^{+}$ and $D^{0} \to π^{-} π^{+}$ decays is reported, using $p p$ collision data corresponding to an integrated luminosity of $5.9 {fb}^{- 1}$ collected at a center-of-mass energy of 13 TeV with the LHCb detector. [...] Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.211803 arXiv:1903.08726 External links: pdf; xml
10.	Observation of $B_{(s)}^{0} \to J / ψ p \bar{p}$ Decays and Precision Measurements of the $B_{(s)}^{0}$ Masses / Aaij, R. ; Abellán Beteta, C. ; Adeva, B. ; Adinolfi, M. ; et al The first observation of the decays $B_{(s)}^{0} \to J / ψ p \bar{p}$ is reported, using proton-proton collision data corresponding to an integrated luminosity of $5.2 {fb}^{- 1}$ , collected with the LHCb detector. [...] Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.191804 arXiv:1902.05588 External links: pdf; xml

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