M. Hajheidari

activity

20222026

ψ

ψ

mass spectrum in proton-proton collisions at

s

= 13 TeV

112 citations · 1k across the 137 of their papers we have counts for

collaborators

142 papers

hep-ex2026

New measurements of $B_{c}^{+}$ decays into single charm final states

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1132

Using proton-proton collision data corresponding to an integrated luminosity of $9 fb^{- 1}$ collected by the LHCb experiment, searches are performed for $B_{c}^{+}$ mesons d…

hep-ex2025★ 1 cited

Amplitude analysis of the $Ξ_{c}^{+} \to p K^{-} π^{+}$ decay and $Ξ_{c}^{+}$ baryon polarization measurement in semileptonic beauty-hadron decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1128

An amplitude analysis of the $Ξ_{c}^{+} \to p K^{-} π^{+}$ decay together with a measurement of the $Ξ_{c}^{+}$ polarization vector in semileptonic beauty-hadron decays is presented. The analysis…

nucl-ex2025

Coherent photoproduction of $ρ^{0}, ω$ and excited vector mesons in ultraperipheral PbPb collisions

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1132

The invariant-mass distribution for the coherent photoproduction of dipions in ultraperipheral PbPb collisions is measured using data, corresponding to an integrated luminosity of…

hep-ex2025

Branching fraction measurement of the decay $B^{+} \to ψ (2 S) ϕ (1020) K^{+}$

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1133

The branching fraction of the decay $B^{+} \to ψ (2 S) ϕ (1020) K^{+}$ , relative to the topologically similar decay $B^{+} \to J / ψ ϕ (1020) K^{+}$ , is measured using proton-proton collision data co…

hep-ex2025★ 2 cited

Angular analysis of $B^{0} \to K^{* 0} e^{+} e^{-}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1118

An angular analysis of $B^{0} \to K^{* 0} e^{+} e^{-}$ decays is presented using proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7, 8…

hep-ex2025★ 3 cited

Evidence for $B^{-} \to D^{** 0} τ^{-} ν_{τ}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1132

The first evidence for the decay $B^{-} \to D^{** 0} τ^{-} ν_{τ}$ is obtained using proton-proton collision data collected by the LHCb experiment, corresponding to an inte…

hep-ex2025

Measurement of the multiplicity dependence of $\mitΥ$ production ratios in $pp$ collisions at $s = 13$ TeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1132

The $\mitΥ(\mathrm{2}S)$ and $\mitΥ(\mathrm{3}S)$ production cross-sections are measured relative to that of the $\mitΥ(\mathrm{1}S)$ meson, as a function of charged-particle multi…

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★ 7 cited

Observation of the open-charm tetraquark candidate $T_{cs 0}^{*} (2870)^{0}$ in the $B^{-} \to D^{-} D^{0} K_{S}^{0}$ decay

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1133

An amplitude analysis of $B^{-} \to D^{-} D^{0} K_{S}^{0}$ decays is performed using proton-proton collision data, corresponding to an integrated luminosity of $9\,\text{fb}^…

hep-ex2024★ 19 cited

Study of $\itΛ_{\it{b}}^\rm{0}$ and $\itΞ_{\it{b}}^\rm{0}$ decays to $Λ h^{+} h^{^{'} -}$ and evidence for $C P$ violation in $\itΛ_{\it{b}}^\rm{0}\to\itΛ K^+K^-$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1134

A study of $\itΛ_{\it{b}}^\rm{0}$ and $\itΞ_{\it{b}}^\rm{0}$ decays to $Λ h^{+} h^{' -}$ $(h^{(')} = π, K)$ is performed using $pp$ collision data collected by the LHCb…

hep-ex2024★ 7 cited

First evidence for direct CP violation in beauty to charmonium decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1131

The $C P$ asymmetry and branching fraction of the CKM-suppressed decay $B^{+} \to J / ψ π^{+}$ are precisely measured relative to the favoured decay $B^+\!\to J\…

hep-ex2024★ 4 cited

Constraints on the photon polarisation in $b \to s γ$ transitions using $B_{s}^{0} \to ϕ e^{+} e^{-}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1124

An angular analysis of the $B_{s}^{0} \to ϕ e^{+} e^{-}$ decay is performed using the proton-proton collision dataset collected between 2011 and 2018 by the LHCb experiment, correspo…

hep-ex2024★ 2 cited

Measurement of $ϕ (1020)$ meson production in fixed-target $p$ Ne collisions at $s_{N N}$ = 68.5 GeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1132

The first measurement of $ϕ (1020)$ meson production in fixed-target $p$ Ne collisions at $s_{N N} = 68.5$ GeV is presented. The $ϕ (1020)$ mesons are reconstructed in their $K^{+…

nucl-ex2024

Measurement of the $ψ (2 S)$ to $J / ψ$ cross-section ratio as a function of centrality in PbPb collisions at $s_{NN}$ = 5.02 TeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1133

The dissociation of quarkonium states with different binding energies produced in heavy-ion collisions is a powerful probe for investigating the formation and properties of the qua…

hep-ex2024★ 9 cited

Study of $D_{s 1} (2460)^{+} \to D_{s}^{+} π^{+} π^{-}$ in $B \to D ˉ^{(*)} D_{s}^{+} π^{+} π^{-}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1129

An amplitude analysis of the $D_{s 1} (2460)^{+} \to D_{s}^{+} π^{+} π^{-}$ transition is performed simultaneously in $B^{0} \to D^{-} D_{s}^{+} π^{+} π^{-}$ , $B^{+}\to{\bar{D}}^{0} D_{s}^{+}…

hep-ex2024★ 2 cited

Measurement of the CKM angle $γ$ in $B^{\pm} \to D K^{*} (892)^{\pm}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1114

Measurements of $C P$ observables and the CKM angle $γ$ are performed in $B^{\pm} \to D K^{*} (892)^{\pm}$ decays, where $D$ represents a superposition of $D^{0}$ and $D^{0}$ …

hep-ex2024★ 5 cited

Measurements of $ψ (2 S)$ and $χ_{c 1} (3872)$ production within fully reconstructed jets

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1114

This paper presents the first measurement of $ψ (2 S)$ and $χ_{c 1} (3872)$ meson production within fully reconstructed jets. Each quarkonium state (tag) is reconstructed via its dec…

hep-ex2024★ 9 cited

Test of lepton flavour universality with $B_{s}^{0} \to ϕ ℓ^{+} ℓ^{-}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1128

Lepton flavour universality in rare $b \to s$ transitions is tested for the first time using $B_{s}^{0}$ meson decays. The measurements are performed using $pp$ collision data c…

hep-ex2024★ 5 cited

Measurement of the effective leptonic weak mixing angle

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1120

Using $pp$ collision data at $s = 13$ TeV, recorded by the LHCb experiment between 2016 and 2018 and corresponding to an integrated luminosity of $5.4$ fb $^{- 1}$ , the forward-…

hep-ex2024

Search for $B_{(s)}^{* 0} \to μ^{+} μ^{-}$ in $B_{c}^{+} \to π^{+} μ^{+} μ^{-}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1116

A search for the very rare $B^{* 0} \to μ^{+} μ^{-}$ and $B_{s}^{* 0} \to μ^{+} μ^{-}$ decays is conducted by analysing the $B_{c}^{+} \to π^{+} μ^{+} μ^{-}$ process. The analysis uses proton-proton collision…

hep-ex2024★ 1 cited

Analysis of $Λ_{b}^{0} \to p K^{-} μ^{+} μ^{-}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1117

The differential branching fraction and angular coefficients of $Λ_{b}^{0} \to p K^{-} μ^{+} μ^{-}$ decays are measured in bins of the dimuon mass squared and dihadron mass.…

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★ 8 cited

Measurement of exclusive $J / ψ$ and $ψ (2 S)$ production at $s = 13$ TeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1075

Measurements are presented of the cross-section for the central exclusive production of $J / ψ \to μ^{+} μ^{-}$ and $ψ (2 S) \to μ^{+} μ^{-}$ processes in proton-proton collisions at $\sqrt{s} = 13…

hep-ex2024★ 1 cited

Measurement of $C P$ violation in $B^{0} \to D^{+} D^{-}$ and $B_{s}^{0} \to D_{s}^{+} D_{s}^{-}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1118

A time-dependent, flavour-tagged measurement of $C P$ violation is performed with $B^{0} \to D^{+} D^{-}$ and $B_{s}^{0} \to D_{s}^{+} D_{s}^{-}$ decays, using data…

New measurements of Bc+​ decays into single charm final states

Amplitude analysis of the Ξc+​→pK−π+ decay and Ξc+​ baryon polarization measurement in semileptonic beauty-hadron decays

Coherent photoproduction of ρ0,ω and excited vector mesons in ultraperipheral PbPb collisions

Branching fraction measurement of the decay B+→ψ(2S)ϕ(1020)K+

Angular analysis of B0→K∗0e+e− decays

Evidence for B−→D∗∗0τ−ντ​​ decays

Measurement of the multiplicity dependence of $\mitΥ$ production ratios in pp collisions at s​=13 TeV

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

Observation of the open-charm tetraquark candidate Tcs0∗​(2870)0 in the B−→D−D0KS0​ decay

Study of $\itΛ_{\it{b}}^\rm{0}$ and $\itΞ_{\it{b}}^\rm{0}$ decays to Λh+h′− and evidence for CP violation in $\itΛ_{\it{b}}^\rm{0}\to\itΛ K^+K^-$ decays

First evidence for direct CP violation in beauty to charmonium decays

Constraints on the photon polarisation in b→sγ transitions using Bs0​→ϕe+e− decays

Measurement of ϕ(1020) meson production in fixed-target pNe collisions at sNN​​ = 68.5 GeV

Measurement of the ψ(2S) to J/ψ cross-section ratio as a function of centrality in PbPb collisions at sNN​​ = 5.02 TeV

Study of Ds1​(2460)+→Ds+​π+π− in B→Dˉ(∗)Ds+​π+π− decays

Measurement of the CKM angle γ in B±→DK∗(892)± decays

Measurements of ψ(2S) and χc1​(3872) production within fully reconstructed jets

Test of lepton flavour universality with Bs0​→ϕℓ+ℓ− decays

Measurement of the effective leptonic weak mixing angle

Search for B(s)∗0​→μ+μ− in Bc+​→π+μ+μ− decays

Analysis of Λb0​→pK−μ+μ− decays

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

Measurement of exclusive J/ψ and ψ(2S) production at s​=13 TeV

Measurement of CP violation in B0→D+D− and Bs0​→Ds+​Ds−​ decays

New measurements of $B_{c}^{+}$ decays into single charm final states

Amplitude analysis of the $Ξ_{c}^{+} \to p K^{-} π^{+}$ decay and $Ξ_{c}^{+}$ baryon polarization measurement in semileptonic beauty-hadron decays

Coherent photoproduction of $ρ^{0}, ω$ and excited vector mesons in ultraperipheral PbPb collisions

Branching fraction measurement of the decay $B^{+} \to ψ (2 S) ϕ (1020) K^{+}$

Angular analysis of $B^{0} \to K^{* 0} e^{+} e^{-}$ decays

Evidence for $B^{-} \to D^{** 0} τ^{-} ν_{τ}$ decays

Measurement of the multiplicity dependence of $\mitΥ$ production ratios in $pp$ collisions at $s = 13$ TeV

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

Observation of the open-charm tetraquark candidate $T_{cs 0}^{*} (2870)^{0}$ in the $B^{-} \to D^{-} D^{0} K_{S}^{0}$ decay

Study of $\itΛ_{\it{b}}^\rm{0}$ and $\itΞ_{\it{b}}^\rm{0}$ decays to $Λ h^{+} h^{^{'} -}$ and evidence for $C P$ violation in $\itΛ_{\it{b}}^\rm{0}\to\itΛ K^+K^-$ decays

Constraints on the photon polarisation in $b \to s γ$ transitions using $B_{s}^{0} \to ϕ e^{+} e^{-}$ decays

Measurement of $ϕ (1020)$ meson production in fixed-target $p$ Ne collisions at $s_{N N}$ = 68.5 GeV

Measurement of the $ψ (2 S)$ to $J / ψ$ cross-section ratio as a function of centrality in PbPb collisions at $s_{NN}$ = 5.02 TeV

Study of $D_{s 1} (2460)^{+} \to D_{s}^{+} π^{+} π^{-}$ in $B \to D ˉ^{(*)} D_{s}^{+} π^{+} π^{-}$ decays

Measurement of the CKM angle $γ$ in $B^{\pm} \to D K^{*} (892)^{\pm}$ decays

Measurements of $ψ (2 S)$ and $χ_{c 1} (3872)$ production within fully reconstructed jets

Test of lepton flavour universality with $B_{s}^{0} \to ϕ ℓ^{+} ℓ^{-}$ decays

Search for $B_{(s)}^{* 0} \to μ^{+} μ^{-}$ in $B_{c}^{+} \to π^{+} μ^{+} μ^{-}$ decays

Analysis of $Λ_{b}^{0} \to p K^{-} μ^{+} μ^{-}$ decays

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

Measurement of exclusive $J / ψ$ and $ψ (2 S)$ production at $s = 13$ TeV

Measurement of $C P$ violation in $B^{0} \to D^{+} D^{-}$ and $B_{s}^{0} \to D_{s}^{+} D_{s}^{-}$ decays