A. Xu

activity

20182026

most citedObservation of a narrow pentaquark state,

P_{c} (4312)^{+}

, and of two-peak structure of the

P_{c} (4450)^{+}

738 citations · 7.5k across the 300 of their papers we have counts for

collaborators

Showing 2019Show all

22 papers · 1 filter

hep-ex2019★ 64 cited

Test of lepton universality with $Λ_{b}^{0} \to p K^{-} ℓ^{+} ℓ^{-}$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +904

The ratio of branching fractions of the decays $Λ_{b}^{0} \to p K^{-} e^{+} e^{-}$ and $Λ_{b}^{0} \to p K^{-} μ^{+} μ^{-}$ , $R_{p K}^{- 1}$ , is measured for the first time using proton-proto…

hep-ex2019★ 31 cited

Determination of quantum numbers for several excited charmed mesons observed in $B^{-} \to D^{*+} π^{-} π^{-}$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +907

A four-body amplitude analysis of the $B^{-} \to D^{*+} π^{-} π^{-}$ decay is performed, where fractions and relative phases of the various resonances contributing to the decay are measu…

hep-ex2019★ 28 cited

Search for the lepton-flavour violating decays $B^{+} \to K^{+} μ^{\pm} e^{\mp}$

LHCb collaboration, R. Aaij, C. Abellán Beteta +895

A search for the lepton-flavour violating decays $B^{+} \to K^{+} μ^{\pm} e^{\mp}$ is performed using a sample of proton-proton collision data, collected with the LHCb experiment at ce…

hep-ex2019★ 64 cited

Search for the doubly charmed baryon $Ξ_{cc}^{+}$

LHCb collaboration, R. Aaij, C. Abelán Beteta +905

A search for the doubly charmed baryon $Ξ_{cc}^{+}$ is performed through its decay to the $Λ_{c}^{+} K^{-} π^{+}$ final state, using proton-proton collision data collected with the LHCb de…

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★ 35 cited

Precision measurement of the $Λ_{c}^{+}$ , $Ξ_{c}^{+}$ and $Ξ_{c}^{0}$ baryon lifetimes

LHCb collaboration, R. Aaij, C. Abellán Beteta +847

We report measurements of the lifetimes of the $Λ_{c}^{+}$ , $Ξ_{c}^{+}$ and $Ξ_{c}^{0}$ charm baryons using proton-proton collision data at center-of-mass energies of 7 and 8\tev, correspondin…

Test of lepton universality with Λb0​→pK−ℓ+ℓ− decays

Determination of quantum numbers for several excited charmed mesons observed in B−→D∗+π−π− decays

Search for the lepton-flavour violating decays B+→K+μ±e∓

Search for the doubly charmed baryon Ξcc+​

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