P. Kopciewicz

activity

20102026

most citedObservation of structure in the

J / ψ

-pair mass spectrum

414 citations · 5.6k across the 200 of their papers we have counts for

collaborators

203 papers

hep-ex2026

Branching fraction measurement of the $B^{0} \to K^{+} π^{-} μ^{+} μ^{-}$ decay at high dihadron mass

LHCb collaboration, R. Aaij, M. Abdelfatah +1103

This Letter presents the first measurement of the $B^{0} \to K^{+} π^{-} μ^{+} μ^{-}$ differential branching fraction in the region of the dihadron $K^{+} π^{-}$ mass, $m_{K π}$ , $1000< m_{…

hep-ex2026

Leakage current evolution in LHCb VELO sensors during Run 1-2 LHC data taking period

M. Pycior, T. Szumlak, A. Oblakowska-Mucha +33

Silicon detectors operating in the harsh mixed-hadron radiation environment of modern high-energy physics experiments suffer progressive bulk damage, manifesting macroscopically as…

nucl-ex2026

Measurement of the average transverse momentum of forward prompt charged particles in $pp$ and $p Pb$ collisions at $s_{N N} = 5.02 TeV$

LHCb collaboration, R. Aaij, M. Abdelfatah +1106

This letter presents the first measurements of the average transverse momentum of prompt charged particles in $pp$ and $p Pb$ collisions as a function of collision multipli…

hep-ex2026

Search for $B$ meson decays to multimuon final states

LHCb collaboration, R. Aaij, M. Abdelfatah +1109

A search for decays of $B$ mesons to final states with four or six muons using $pp$ collision data recorded by the LHCb experiment corresponding to an integrated luminosity of $5.4…

hep-ex2026

Study of muon-tagged $D_{s 1} (2460)^{+}$ and $D_{s 1} (2536)^{+}$ decays to the $D_{s}^{+} π^{+} π^{-}$ final state

LHCb collaboration, R. Aaij, M. Abdelfatah +1119

Decays of the pseudovector $D_{s 1} (2460)^{+}$ and $D_{s 1} (2536)^{+}$ mesons to the three-body $D_{s}^{+} π^{+} π^{-}$ final state are studied. The data sample is based on decays of beauty hadr…

hep-ex2026

Improved measurement of $C P$ violation in $B_{s}^{0} \to J / ψ π^{+} π^{-}$ decays

LHCb collaboration, R. Aaij, M. Abdelfatah +1116

The time-dependent $C P$ asymmetry in $B_{s}^{0} \to J / ψ π^{+} π^{-}$ decays is measured using proton-proton collision data, corresponding to an integrated luminosity of $6\,\text…

Branching fraction measurement of the B0→K+π−μ+μ− decay at high dihadron mass

Leakage current evolution in LHCb VELO sensors during Run 1-2 LHC data taking period

Measurement of the average transverse momentum of forward prompt charged particles in pp and pPb collisions at sNN​​=5.02TeV

Search for B meson decays to multimuon final states

Study of muon-tagged Ds1​(2460)+ and Ds1​(2536)+ decays to the Ds+​π+π− final state

Improved measurement of CP violation in Bs0​→J/ψπ+π− decays

Branching fraction measurement of the $B^{0} \to K^{+} π^{-} μ^{+} μ^{-}$ decay at high dihadron mass

Measurement of the average transverse momentum of forward prompt charged particles in $pp$ and $p Pb$ collisions at $s_{N N} = 5.02 TeV$

Search for $B$ meson decays to multimuon final states

Study of muon-tagged $D_{s 1} (2460)^{+}$ and $D_{s 1} (2536)^{+}$ decays to the $D_{s}^{+} π^{+} π^{-}$ final state

Improved measurement of $C P$ violation in $B_{s}^{0} \to J / ψ π^{+} π^{-}$ decays