Ifan Williams

activity

20182023

most citedObservation of a narrow pentaquark state,

P_{c} (4312)^{+}

, and of two-peak structure of the

P_{c} (4450)^{+}

738 citations · 2k across the 50 of their papers we have counts for

collaborators

Showing 2022Show all

16 papers · 1 filter

hep-ex2022★ 3 cited

Measurement of $Υ$ production in $pp$ collisions at $s = 5 TeV$

LHCb collaboration

The production cross-sections of $Υ$ mesons, namely $Υ (1 S)$ , $Υ (2 S)$ and $Υ (3 S)$ , in $pp$ collisions at $s = 5 TeV$ are measured with a data sample corresponding to an…

hep-ex2022★ 13 cited

$J / ψ$ and $D^{0}$ production in $s_{NN}$ = 68.5 GeV PbNe collisions

LHCb Collaboration

The first measurement of $J / ψ$ and $D^{0}$ production in PbNe collisions by the LHCb experiment in its fixed-target configuration is reported. The production of $J / ψ$ and $D^{0}$ meson…

hep-ex2022★ 10 cited

Charmonium production in $p$ Ne collisions at $s_{NN} = 68.5$ GeV

LHCb Collaboration

The measurement of charmonium states produced in proton-neon ( $p$ Ne) collisions by the LHCb experiment in its fixed-target configuration is presented. The production of $J / ψ$ and $…

hep-ex2022★ 17 cited

Open charm production and asymmetry in $p$ Ne collisions at $s_{NN} =$ 68.5 GeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1053

A measurement of $D^{0}$ meson production by the LHCb experiment in its fixed-target configuration is presented. The production of $D^{0}$ mesons is studied with a beam of 2.5 TeV prot…

hep-ex2022★ 9 cited

First observation of the $B^{+} \to D_{s}^{+} D_{s}^{-} K^{+}$ decay

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1048

The $B^{+} \to D_{s}^{+} D_{s}^{-} K^{+}$ decay is observed for the first time using proton-proton collision data collected by the LHCb detector at centre-of-mass energies of $7$ , $8$ …

hep-ex2022★ 1 cited

Observation of the $B_{s}^{0} \to D^{+} D^{-}$ decay

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1059

The first observation of the $B_{s}^{0} \to D^{*+} D^{*-}$ decay and the measurement of its branching ratio relative to the $B^{0} \to D^{*+} D^{*-}$ decay are presented. The data sample…

hep-ex2022★ 3 cited

Search for the baryon- and lepton-number violating decays $B^{0} \to p μ^{-}$ and $B_{s}^{0} \to p μ^{-}$

LHCb collaboration

A search for the baryon- and lepton-number violating decays $B^{0} \to p μ^{-}$ and $B_{s}^{0} \to p μ^{-}$ is performed at the LHCb experiment using data collected in proton-proton collisions a…

hep-ex2022★ 8 cited

Measurement of the CKM angle $γ$ with $B^{\pm} \to D [K^{\mp} π^{\pm} π^{\pm} π^{\mp}] h^{\pm}$ decays using a binned phase-space approach

LHCb collaboration

The CKM angle $γ$ is determined from $C P$ -violating observables measured in $B^{\pm} \to D [K^{\mp} π^{\pm} π^{\pm} π^{\mp}] h^{\pm}$ , $(h = K, π)$ decays, where the measurements are performe…

hep-ex2022★ 35 cited

Measurement of the time-integrated $C P$ asymmetry in $D^{0} \to K^{-} K^{+}$ decays

LHCb collaboration

The time-integrated $C P$ asymmetry in the Cabibbo-suppressed decay $D^{0} \to K^{-} K^{+}$ is measured using proton-proton collision data, corresponding to an integrated luminosity of 5.…

hep-ex2022★ 2 cited

Study of $B_{c}^{+}$ meson decays to charmonia plus multihadron final states

LHCb Collaboration, R. Aaij, A. S. W. Abdelmotteleb +1058

Four decay modes of the $B_{c}^{+}$ meson into a $J / ψ$ meson and multiple charged kaons or pions are studied using proton-proton collision data, collected with the~LHCb detector at cen…

hep-ex2022

Measurement of $τ_{L}$ using the $B_{s}^{0} \to J / ψ η$ decay mode

LHCb collaboration

Using a proton-proton collision data sample collected by the LHCb detector and corresponding to an integrated luminosity of 5.7 $fb^{- 1}$ , the lifetime of the $B_{s}^{0}$ ma…

hep-ex2022

Search for $C P$ violation using $T^$ -odd correlations in $B^{0} \to p p ˉ K^{+} π^{-}$ decays

LHCb collaboration

A search for $C P$ and $P$ violation in charmless four-body $B^{0} \to p p ˉ K^{+} π^{-}$ decays is performed using triple-product asymmetry observables. It is based on proton-pr…

nucl-ex2022★ 22 cited

Measurement of the prompt $D^{0}$ nuclear modification factor in $p$ Pb collisions at $s_{NN} = 8.16$ TeV

LHCb collaboration

The production of prompt $D^{0}$ mesons in proton-lead collisions in the forward and backward configurations at a center-of-mass energy per nucleon pair of $\sqrt{s_\mathrm{NN}} = 8.…

nucl-ex2022★ 15 cited

Nuclear modification factor of neutral pions in the forward and backward regions in $p$ -Pb collisions

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +999

The nuclear modification factor of neutral pions is measured in proton-lead collisions collected at a center-of-mass energy per nucleon of $8.16 TeV$ with the LHCb detector.…

hep-ex2022★ 11 cited

Measurement of the charm mixing parameter $y_{C P} - y_{C P}^{K π}$ using two-body $D^{0}$ meson decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +995

A measurement of the ratios of the effective decay widths of $D^{0} \to π^{-} π^{+}$ and $D^{0} \to K^{-} K^{+}$ decays over that of $D^{0} \to K^{-} π^{+}$ decays is performed with the LHCb experiment…

hep-ex2022★ 74 cited

Observation of the decay $Λ_{b}^{0} \to Λ_{c}^{+} τ^{-} ν_{τ}$

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +992

The first observation of the semileptonic $b$ -baryon decay $Λ_{b}^{0} \to Λ_{c}^{+} τ^{-} ν_{τ}$ , with a significance of $6.1 σ$ , is reported using a data sample correspondin…

Measurement of Υ production in pp collisions at s​=5 TeV

J/ψ and D0 production in sNN​​ = 68.5 GeV PbNe collisions

Charmonium production in pNe collisions at sNN​​=68.5 GeV

Open charm production and asymmetry in pNe collisions at sNN​​= 68.5 GeV

First observation of the B+→Ds+​Ds−​K+ decay

Observation of the Bs0​→D∗+D∗− decay

Search for the baryon- and lepton-number violating decays B0→pμ− and Bs0​→pμ−

Measurement of the CKM angle γ with B±→D[K∓π±π±π∓]h± decays using a binned phase-space approach

Measurement of the time-integrated CP asymmetry in D0→K−K+ decays

Study of Bc+​ meson decays to charmonia plus multihadron final states

Measurement of τL​ using the Bs0​→J/ψη decay mode

Search for CP violation using T^-odd correlations in B0→ppˉ​K+π− decays

Measurement of the prompt D0 nuclear modification factor in pPb collisions at sNN​​=8.16 TeV

Nuclear modification factor of neutral pions in the forward and backward regions in p-Pb collisions

Measurement of the charm mixing parameter yCP​−yCPKπ​ using two-body D0 meson decays

Observation of the decay Λb0​→Λc+​τ−ντ​

Measurement of $Υ$ production in $pp$ collisions at $s = 5 TeV$

$J / ψ$ and $D^{0}$ production in $s_{NN}$ = 68.5 GeV PbNe collisions

Charmonium production in $p$ Ne collisions at $s_{NN} = 68.5$ GeV

Open charm production and asymmetry in $p$ Ne collisions at $s_{NN} =$ 68.5 GeV

First observation of the $B^{+} \to D_{s}^{+} D_{s}^{-} K^{+}$ decay

Observation of the $B_{s}^{0} \to D^{+} D^{-}$ decay

Search for the baryon- and lepton-number violating decays $B^{0} \to p μ^{-}$ and $B_{s}^{0} \to p μ^{-}$

Measurement of the CKM angle $γ$ with $B^{\pm} \to D [K^{\mp} π^{\pm} π^{\pm} π^{\mp}] h^{\pm}$ decays using a binned phase-space approach

Measurement of the time-integrated $C P$ asymmetry in $D^{0} \to K^{-} K^{+}$ decays

Study of $B_{c}^{+}$ meson decays to charmonia plus multihadron final states

Measurement of $τ_{L}$ using the $B_{s}^{0} \to J / ψ η$ decay mode

Search for $C P$ violation using $T^$ -odd correlations in $B^{0} \to p p ˉ K^{+} π^{-}$ decays

Measurement of the prompt $D^{0}$ nuclear modification factor in $p$ Pb collisions at $s_{NN} = 8.16$ TeV

Nuclear modification factor of neutral pions in the forward and backward regions in $p$ -Pb collisions

Measurement of the charm mixing parameter $y_{C P} - y_{C P}^{K π}$ using two-body $D^{0}$ meson decays

Observation of the decay $Λ_{b}^{0} \to Λ_{c}^{+} τ^{-} ν_{τ}$