P. Collins

activity

20132021

most citedMeasurement of the ratio of branching fractions

B (B_{c}^{+} \to J / ψ τ^{+} ν_{τ})

B (B_{c}^{+} \to J / ψ μ^{+} ν_{μ})

280 citations · 1.3k across the 16 of their papers we have counts for

collaborators

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16 papers · 1 filter

hep-ex2021★ 6 cited

Identification of charm jets at LHCb

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +994

The identification of charm jets is achieved at LHCb for data collected in 2015-2018 using a method based on the properties of displaced vertices reconstructed and matched with jet…

hep-ex2021★ 52 cited

Simultaneous determination of CKM angle $γ$ and charm mixing parameters

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +994

A combination of measurements sensitive to the $C P$ violation angle $γ$ of the Cabibbo-Kobayashi-Maskawa unitarity triangle and to the charm mixing parameters that describe oscilla…

hep-ex2021★ 8 cited

Measurement of the prompt-production cross-section ratio $σ (χ_{c 2}) / σ (χ_{c 1})$ in $p$ Pb collisions at $s_{N N}$ = 8.16 TeV

R. Aaij, C. Abellán Beteta, T. Ackernley +954

This Letter reports the first measurement of prompt $χ_{c 1}$ and $χ_{c 2}$ charmonium production in nuclear collisions at Large Hadron Collider energies. The cross-section ratio $σ(…

hep-ex2021★ 200 cited

Observation of new resonances decaying to $J / ψ K^{+}$ and $J / ψ ϕ$

LHCb collaboration, R. Aaij, C. Abellán Beteta +953

The first observation of exotic states with a new quark content $c c ˉ u s ˉ$ decaying to the $J / ψ K^{+}$ final state is reported with high significance from an amplitude anal…

hep-ex2020★ 9 cited

Measurement of the relative branching fractions of $B^{+} \to h^{+} h^{' +} h^{' -}$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +957

The relative branching fractions of $B^{+} \to h^{+} h^{' +} h^{' -}$ decays, where $h^{(')}$ is a pion or kaon, are measured. The analysis is performed with a data sample…

hep-ex2020★ 52 cited

Observation of multiplicity-dependent prompt $χ_{c 1} (3872)$ and $ψ (2 S)$ production in $pp$ collisions

LHCb collaboration, R. Aaij, C. Abellán Beteta +968

The production of $χ_{c 1} (3872)$ and $ψ (2 S)$ hadrons is studied as a function of charged particle multiplicity in $pp$ collisions at a center-of-mass energy of 8 TeV, corresponding…

hep-ex2019★ 68 cited

Observation of several sources of $C P$ violation in $B^{+} \to π^{+} π^{+} π^{-}$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +868

Observations are reported of different sources of $C P$ violation from an amplitude analysis of $B^{+} \to π^{+} π^{+} π^{-}$ decays, based on a data sample corresponding to an integrated l…

hep-ex2019★ 114 cited

Measurement of b-hadron fractions in 13 TeV pp collisions

LHCb Collaboration, R. Aaij, C. Abellán Beteta +843

The production fractions of $B_{s}^{0}$ and $Λ_{b}^{0}$ hadrons, normalized to the sum of $B^{-}$ and $B^{0}$ fractions, are measured in 13 TeV pp collisions using data c…

hep-ex2019★ 17 cited

Observation of $B_{(s)}^{0} \to J / ψ p p$ decays and precision measurements of the $B_{(s)}^{0}$ masses

LHCb Collaboration, R. Aaij, C. Abellán Beteta +843

The first observation of the decays $B_{(s)}^{0} \to J / ψ p p$ is reported, using proton-proton collision data corresponding to an integrated luminosity of $5.2{\text{\,fb}}…

hep-ex2018★ 76 cited

First measurement of charm production in fixed-target configuration at the LHC

LHCb collaboration, R. Aaij, B. Adeva +834

The first measurement of heavy-flavour production by the LHCb experiment in its fixed-target mode is presented. The production of $J / ψ$ and $D^{0}$ mesons is studied with beams of pr…

hep-ex2018★ 40 cited

Measurement of $C P$ asymmetries in two-body $B_{(s)}^{0}$ -meson decays to charged pions and kaons

LHCb collaboration, R. Aaij, B. Adeva +786

The time-dependent $C P$ asymmetries in $B^{0} \to π^{+} π^{-}$ and $B_{s}^{0} \to K^{+} K^{-}$ decays are measured using a data sample of $pp$ collisions corresponding to an integrated luminosity…

hep-ex2017★ 35 cited

Evidence for the rare decay $Σ^{+} \to p μ^{+} μ^{-}$

LHCb collaboration, R. Aaij, B. Adeva +791

A search for the rare decay $Σ^{+} \to p μ^{+} μ^{-}$ is performed using $pp$ collision data recorded by the LHCb experiment at centre-of-mass energies $s = 7$ and $8$ TeV, corres…

hep-ex2017★ 280 cited

Measurement of the ratio of branching fractions $B (B_{c}^{+} \to J / ψ τ^{+} ν_{τ})$ / $B (B_{c}^{+} \to J / ψ μ^{+} ν_{μ})$

LHCb collaboration, R. Aaij, B. Adeva +797

A measurement is reported of the ratio of branching fractions $R (J / ψ) = B (B_{c}^{+} \to J / ψ τ^{+} ν_{τ}) / B (B_{c}^{+} \to J / ψ μ^{+} ν_{μ})$ , where the $τ^{+}$ lepton is id…

hep-ex2017★ 248 cited

Measurement of the $B_{s}^{0} \to μ^{+} μ^{-}$ branching fraction and effective lifetime and search for $B^{0} \to μ^{+} μ^{-}$ decays

LHCb collaboration, R. Aaij, B. Adeva +771

A search for the rare decays $B_{s}^{0} \to μ^{+} μ^{-}$ and $B^{0} \to μ^{+} μ^{-}$ is performed at the LHCb experiment using data collected in $pp$ collisions corresponding to a total integrated lum…

hep-ex2015★ 55 cited

Measurement of the forward-backward asymmetry in $Z / γ^{*} \to μ^{+} μ^{-}$ decays and determination of the effective weak mixing angle

LHCb collaboration, R. Aaij, B. Adeva +722

The forward-backward charge asymmetry for the process $q q ˉ \to Z / γ^{*} \to μ^{+} μ^{-}$ is measured as a function of the invariant mass of the dimuon system.…

hep-ex2013★ 46 cited

First measurement of time-dependent CP violation in Bs -> K+K- decays

LHCb collaboration, R. Aaij, B. Adeva +657

Direct and mixing-induced CP-violating asymmetries in Bs -> K+K- decays are measured for the first time using a data sample of pp collisions, corresponding to an integrated luminos…

Identification of charm jets at LHCb

Simultaneous determination of CKM angle γ and charm mixing parameters

Measurement of the prompt-production cross-section ratio σ(χc2​)/σ(χc1​) in pPb collisions at sNN​​ = 8.16 TeV

Observation of new resonances decaying to J/ψK+ and J/ψϕ

Measurement of the relative branching fractions of B+→h+h′+h′− decays

Observation of multiplicity-dependent prompt χc1​(3872) and ψ(2S) production in pp collisions

Observation of several sources of CP violation in B+→π+π+π− decays