B. Pietrzyk

activity

20122020

most citedObservation of the resonant character of the

Z (4430)^{-}

state

398 citations · 669 across the 8 of their papers we have counts for

collaborators

8 papers

hep-ex2020★ 29 cited

Search for heavy neutral leptons in $W^{+} \to μ^{+} μ^{\pm} jet$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +980

A search is performed for heavy neutrinos in the decay of a $W$ boson into two muons and a jet. The data set corresponds to an integrated luminosity of approximately $3.0 \text{ fb…

hep-ex2020★ 26 cited

Study of $B_{s}^{0} \to J / ψ π^{+} π^{-} K^{+} K^{-}$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +958

The decays $B_{s}^{0} \to J / ψ π^{+} π^{-} K^{+} K^{-}$ are studied using a data set corresponding to an integrated luminosity of 9fb $^{- 1}$ , collected with the LHCb detector in proton-pr…

hep-ex2017★ 23 cited

$χ_{c 1}$ and $χ_{c 2}$ resonance parameters with the decays $χ_{c 1, c 2} \to J / ψ μ^{+} μ^{-}$

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

The decays $χ_{c 1} \to J / ψ μ^{+} μ^{-}$ and $χ_{c 2} \to J / ψ μ^{+} μ^{-}$ are observed and used to study the resonance parameters of the $χ_{c 1}$ and $χ_{c 2}$ mesons. The mass…

hep-ex2014★ 36 cited

Measurement of CP violation parameters in B0->D K*0 decays

LHCb collaboration, R. Aaij, B. Adeva +698

An analysis of B0->D K*0 decays is presented, where D represents an admixture of D0 and D0b mesons reconstructed in four separate final states: K-pi+, pi-K+, K+K- and pi+pi-. The d…

hep-ex2014★ 21 cited

Measurement of the $Ξ_{b}^{-}$ and $Ω_{b}^{-}$ baryon lifetimes

LHCb collaboration, R. Aaij, B. Adeva +691

Using a data sample of pp collisions corresponding to an integrated luminosity of $3 f b^{- 1}$ , the $Ξ_{b}^{-}$ and $Ω_{b}^{-}$ baryons are reconstructed in the $Ξ_b^- \rightarrow J/ψΞ…

hep-ex2014★ 398 cited

Observation of the resonant character of the $Z (4430)^{-}$ state

LHCb collaboration, R. Aaij, B. Adeva +697

Resonant structures in $B^{0} \to ψ^{'} π^{-} K^{+}$ decays are analyzed by performing a four-dimensional fit of the decay amplitude, using $pp$ collision data corresponding to $3f b^{- 1}$ …

Search for heavy neutral leptons in W+→μ+μ±jet decays

Study of Bs0​→J/ψπ+π−K+K− decays

χc1​ and χc2​ resonance parameters with the decays χc1,c2​→J/ψμ+μ−