Marcel Merk

activity

20172025

C P

violation in charm decays

297 citations · 413 across the 15 of their papers we have counts for

collaborators

15 papers

hep-ex2025★ 2 cited

First evidence of $C P$ violation in beauty baryon to charmonium decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1178

A study of the difference in the $C P$ asymmetries between $Λ_{b}^{0} \to J / ψ p π^{-}$ and $Λ_{b}^{0} \to J / ψ p K^{-}$ decays, $Δ A_{C P}$ , is performed using proton-prot…

hep-ex2025

Inclusive $B$ -meson flavour-tagging algorithm at LHCb

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1179

A new algorithm is developed to identify the flavour of neutral $B$ mesons at production in $pp$ collisions by utilising all tracks from the hadronisation process. The algorithm is…

hep-ex2025★ 47 cited

Observation of charge-parity symmetry breaking in baryon decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1136

The Standard Model of particle physics-the theory of particles and interactions at the smallest scale-predicts that matter and antimatter interact differently due to violation of t…

hep-ex2024★ 2 cited

Measurement of $C P$ asymmetry in $B_{s}^{0} \to D_{s}^{\mp} K^{\pm}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1119

A measurement of the $C P$ -violating parameters in $B_{s}^{0} \to D_{s}^{\mp} K^{\pm}$ decays is reported, based on the analysis of proton-proton collision data collected by the LHCb expe…

hep-ex2024★ 6 cited

First determination of the spin-parity of $Ξ_{c} (3055)^{+, 0}$ baryons

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1112

The $Ξ_{b}^{0 (-)} \to Ξ_{c} (3055)^{+ (0)} (\to D^{+ (0)} Λ) π^{-}$ decay chains are observed, and the spin-parity of $Ξ_{c} (3055)^{+ (0)}$ baryons is determined for the first time. The m…

hep-ex2024★ 13 cited

Probing the nature of the $χ_{c 1} (3872)$ state using radiative decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1097

The radiative decays $χ_{c 1} (3872) \to ψ (2 S) γ$ and $χ_{c 1} (3872) \to J / ψ γ$ are used to probe the~nature of the~ $χ_{c 1} (3872)$ state using proton-proton collision data…

hep-ex2024★ 5 cited

First observation of $Λ_{b}^{0} \to Σ_{c}^{() ++} D^{() -} K^{-}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1071

The four decays, $Λ_{b}^{0} \to Σ_{c}^{(*) ++} D^{(*) -} K^{-}$ , are observed for the first time using proton-proton collision data collected with the LHCb detector at a centre…

hep-ex2024★ 5 cited

Search for the $B_{s}^{0} \to μ^{+} μ^{-} γ$ decay

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1072

A search for the fully reconstructed $B_{s}^{0} \to μ^{+} μ^{-} γ$ decay is performed at the LHCb experiment using proton-proton collisions at $s = 13$ \,TeV corresponding to an…

hep-ex2024★ 1 cited

Amplitude analysis of the $Λ_{b}^{0} \to p K^{-} γ$ decay

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1088

The resonant structure of the radiative decay $Λ_{b}^{0} \to p K^{-} γ$ in the region of proton-kaon invariant-mass up to 2.5 GeV $/ c^{2}$ is studied using proton-proton collision data recorde…

hep-ex2024★ 5 cited

First observation of the $Λ_{b}^{0} \to D^{+} D^{-} Λ$ decay

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1072

The $Λ_{b}^{0} \to D^{+} D^{-} Λ$ decay is observed for the first time using proton-proton collision data collected by the LHCb experiment at a center-of-mass energy of $13 TeV$ ,…

hep-ex2023★ 3 cited

Measurement of associated $J / ψ$ - $ψ (2 S)$ production cross-section in $pp$ collisions at $s = 13$ TeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1080

The cross-section of associated $J / ψ$ - $ψ (2 S)$ production in proton-proton collisions at a centre-of-mass energy of $s = 13$ TeV is measured using a data sample corresponding t…

hep-ex2023★ 1 cited

A model-independent measurement of the CKM angle $γ$ in partially reconstructed $B^{\pm} \to D^{*} h^{\pm}$ decays with $D \to K_{S}^{0} h^{+} h^{-}$ $(h = π, K)$

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1081

A measurement of $C P$ -violating observables in $B^{\pm} \to D^{*} K^{\pm}$ and $B^{\pm} \to D^{*} π^{\pm}$ decays is made where the photon or neutral pion from the $D^{*} \to D γ$ …

hep-ex2023★ 12 cited

Study of charmonium decays to $K_{S}^{0} K π$ in the $B \to (K_{S}^{0} K π) K$ channels

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1049

A study of the $B^{+} \to K_{S}^{0} K^{+} K^{-} π^{+}$ and $B^{+} \to K_{S}^{0} K^{+} K^{+} π^{-}$ decays is performed using proton-proton collisions at center-of-mass energies of 7, 8 and 13 TeV at the LHCb expe…

hep-ex2019★ 297 cited

Observation of $C P$ violation in charm decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +848

A search for charge-parity ( $C P$ ) violation in $D^{0} \to K^{-} K^{+}$ and $D^{0} \to π^{-} π^{+}$ decays is reported, using $pp$ collision data corresponding to an integrated luminosity of…

hep-ex2017★ 14 cited

First observation of the rare purely baryonic decay $B^{0} \to p p ˉ$

LHCb collaboration, R. Aaij, B. Adeva +802

The first observation of the decay of a $B^{0}$ meson to a purely baryonic final state, $B^{0} \to p p ˉ$ , is reported. The proton-proton collision data sample used was collected w…

First evidence of CP violation in beauty baryon to charmonium decays

Inclusive B-meson flavour-tagging algorithm at LHCb

Observation of charge-parity symmetry breaking in baryon decays

Measurement of CP asymmetry in Bs0​→Ds∓​K± decays

First determination of the spin-parity of Ξc​(3055)+,0 baryons

Probing the nature of the χc1​(3872) state using radiative decays

First observation of Λb0​→Σc(∗)++​D(∗)−K− decays

Search for the Bs0​→μ+μ−γ decay

Amplitude analysis of the Λb0​→pK−γ decay

First observation of the Λb0​→D+D−Λ decay

Measurement of associated J/ψ-ψ(2S) production cross-section in pp collisions at s​=13 TeV

A model-independent measurement of the CKM angle γ in partially reconstructed B±→D∗h± decays with D→KS0​h+h− (h=π,K)

Study of charmonium decays to KS0​Kπ in the B→(KS0​Kπ)K channels

Observation of CP violation in charm decays

First observation of the rare purely baryonic decay B0→ppˉ​

First evidence of $C P$ violation in beauty baryon to charmonium decays

Inclusive $B$ -meson flavour-tagging algorithm at LHCb

Measurement of $C P$ asymmetry in $B_{s}^{0} \to D_{s}^{\mp} K^{\pm}$ decays

First determination of the spin-parity of $Ξ_{c} (3055)^{+, 0}$ baryons

Probing the nature of the $χ_{c 1} (3872)$ state using radiative decays

First observation of $Λ_{b}^{0} \to Σ_{c}^{() ++} D^{() -} K^{-}$ decays

Search for the $B_{s}^{0} \to μ^{+} μ^{-} γ$ decay

Amplitude analysis of the $Λ_{b}^{0} \to p K^{-} γ$ decay

First observation of the $Λ_{b}^{0} \to D^{+} D^{-} Λ$ decay

Measurement of associated $J / ψ$ - $ψ (2 S)$ production cross-section in $pp$ collisions at $s = 13$ TeV

A model-independent measurement of the CKM angle $γ$ in partially reconstructed $B^{\pm} \to D^{*} h^{\pm}$ decays with $D \to K_{S}^{0} h^{+} h^{-}$ $(h = π, K)$

Study of charmonium decays to $K_{S}^{0} K π$ in the $B \to (K_{S}^{0} K π) K$ channels

Observation of $C P$ violation in charm decays

First observation of the rare purely baryonic decay $B^{0} \to p p ˉ$