W. Krzemień

activity

20082026

J / ψ p

resonances consistent with pentaquark states in

Λ_{b}^{0} \to J / ψ K^{-} p

decays

1.3k citations · 19.6k across the 441 of their papers we have counts for

collaborators

Showing nucl-exShow all

62 papers · 1 filter

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…

nucl-ex2026

Study of nuclear effects on charm production in light-ion collisions

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

The onset of nuclear effects in light-ion collisions is studied by measuring the ratio of $D^{0}$ meson production between NeNe and OO collisions at a center-of-mass energy per nucle…

nucl-ex2025

Three-Nucleon Dynamics in the dp breakup collisions at 190 MeV/nucleon using the WASA detector at COSY-Jülich

P. Adlarson, W. Augustyniak, W. Bardan +87

The differential cross section for the $^{1}$ H $(d, pp) n$ breakup reaction at deuteron beam energy of 380 MeV has been determined with high precision for 189 angular configurations o…

nucl-ex2024

Feasibility studies of dark photon searches with the J-PET detector

Justyna Mędrala-Sowa, Elena Perez del Rio, Wojciech Krzemień

The positronium, a bound state of electron and positron is a unique system to perform highly precise tests, due to no hadronic background and precise Quantum Electrodynamics (QED)…

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.…

nucl-ex2021★ 106 cited

Testing CPT symmetry in ortho-positronium decays with positronium annihilation tomography

Paweł Moskal, Aleksander Gajos, Muhsin Mohammed +35

Charged lepton system symmetry under combined charge, parity, and time-reversal transformation (CPT) remains scarcely tested. Despite stringent quantum-electrodynamic limits, discr…

nucl-ex2021

Centrality determination in heavy-ion collisions with the LHCb detector

LHCb collaboration, R. Aaij, C. Abellán Beteta +942

The centrality of heavy-ion collisions is directly related to the medium created therein. A procedure to determine the centrality of collisions with the LHCb detector is implemente…

nucl-ex2020★ 10 cited

Search for the $η$ mesic $^{3}$ He in the $p d \to d p π^{0}$ reaction with the WASA-at-COSY facility

P. Adlarson, W. Augustyniak, M. Bashkanov +80

The excitation function for the $p d \to$ $d p π^{0}$ reaction has been measured by WASA-at-COSY experiment with the aim of searching for $^{3}\hspace{-0.03cm}\mbox{He}$- $η$ …

nucl-ex2019★ 7 cited

Study of Three-Nucleon Dynamics in the dp breakup collisions using the WASA detector

P. Adlarson, W. Augustyniak, W. Bardan +86

Differential cross section for the 1H(d,pp)n breakup reaction at deuteron beam energy of 340 MeV has been measured with the use of WASA detector at COSY-Juelich. The set of proton-…

nucl-ex2019★ 9 cited

Search for eta mesic 3He with the WASA-at-COSY facility in the pd-> 3He 2gamma and pd-> 3He 6gamma reactions

P. Adlarson, W. Augustyniak, W. Bardan +81

We report on the experimental search for the bound state of an $η$ meson and $^{3}\hspace{-0.03cm}\mbox{He}$ nucleus performed using the WASA-at-COSY detector setup. In order to se…

nucl-ex2018★ 1 cited

Backward single-pion production in the $pd \to^{3} He π^{0}$ reaction with WASA-at-COSY

P. Adlarson, W. Augustyniak, W. Bardan +89

New data on the production of single neutral pions in the $p d \to^{3} He π^{0}$ reaction are presented. For fifteen proton beam momenta between $p_p=1.60\;\textrm{GeV…

nucl-ex2018★ 16 cited

An Isotensor Dibaryon in the $pp \to pp π^{+} π^{-}$ Reaction?

P. Adlarson, W. Augustyniak, W. Bardan +81

Exclusive measurements of the quasi-free $pp \to pp π^{+} π^{-}$ reaction have been carried out at WASA@COSY by means of $p d$ collisions at $T_{p}$ = 1.2 GeV. Total and differential cross…

nucl-ex2018★ 3 cited

On the Production of an Isotensor Dibaryon in the $pp \to pp π^{+} π^{-}$ Reaction

P. Adlarson, W. Augustyniak, W. Bardan +81

Exclusive measurements of the quasi-free $pp \to pp π^{+} π^{-}$ reaction have been performed by means of $p d$ collisions at $T_{p}$ = 1.2 GeV using the WASA detector setup at COSY. Total…

nucl-ex2018★ 11 cited

Total and differential cross sections of $η$ -production in proton-deuteron fusion for excess energies between $Q_{η} = 13 MeV$ and $Q_{η} = 81 MeV$

P. Adlarson, W. Augustyniak, W. Bardan +90

New data on both total and differential cross sections of the production of $η$ mesons in proton-deuteron fusion to $^{3} He η$ in the excess energy region $13.6\;\text{MeV}…

nucl-ex2017★ 2 cited

Spin dependence of η meson production in proton-proton collisions close to threshold

P. Adlarson, W. Augustyniak, W. Bardan +88

Taking advantage of the high acceptance and axial symmetry of the WASA-at-COSY detector, and the high degree of the polarized proton beam of COSY, the reaction pp{\to} ppη has been…

nucl-ex2017★ 3 cited

Importance of d-wave contributions in the charge symmetry breaking reaction $dd \to^{4} He π^{0}$

P. Adlarson, W. Augustyniak, W. Bardan +89

This letter reports a first quantitative analysis of the contribution of higher partial waves in the charge symmetry breaking reaction $dd \to^{4} He π^{0}$ using the WASA-at-C…

nucl-ex2017★ 1 cited

Isoscalar Single-Pion Production in the Region of Roper and $d^{*} (2380)$ Resonances

COSY Collaboration, P. Adlarson, W. Augustyniak +90

Exclusive measurements of the quasi-free $p n \to pp π^{-}$ and $pp \to pp π^{0}$ reactions have been performed by means of $p d$ collisions at $T_{p}$ = 1.2 GeV using the WASA detector setu…

nucl-ex2016★ 37 cited

Search for eta-mesic 4He in the dd->3He n pi0 and dd->3He p pi- reactions with the WASA-at-COSY facility

P. Adlarson, W. Augustyniak, W. Bardan +90

The search for 4He-eta bound states was performed with the WASA-at-COSY facility via the measurement of the excitation function for the dd->3He n pi0 and dd->3He p pi- processes. T…

nucl-ex2016

Production and interaction of the eta meson with nucleons and nuclei

Wojciech Krzemien, Oleksandr Khreptak, Paweł Moskal +4

We report on the status of the search for eta-mesic nuclei and the studies of the interaction of the eta meson with nucleons. Recently we have completed the analysis of the new WAS…

nucl-ex2016★ 20 cited

Measurement of the $ω \to π^{+} π^{-} π^{0}$ Dalitz plot distribution

COSY Collaboration, P. Adlarson, W. Augustyniak +93

Using the production reactions $pd\to {}^3\mbox{He}\,ω$ and $pp \to pp ω$ , the Dalitz plot distribution for the $ω \to π^{+} π^{-} π^{0}$ decay is studied with the WASA detector at COSY, ba…

nucl-ex2016★ 32 cited

Feasibility study for the measurement of $π N$ TDAs at PANDA in $p ˉ p \to J / ψ π^{0}$

PANDA Collaboration, B. Singh, W. Erni +508

The exclusive charmonium production process in $p ˉ p$ annihilation with an associated $π^{0}$ meson $p ˉ p \to J / ψ π^{0}$ is studied in the framework of QCD collinear factorizatio…

nucl-ex2016★ 17 cited

Search for an Isospin I =3 Dibaryon

P. Adlarson, W. Augustyniak, W. Bardan +91

Various theoretical calculations based on QCD or hadronic interactions predict that in addition to the recently observed dibaryon resonance $d^{*} (2380)$ with $I (J^{P}) = 0 (3^{+})$ there…

nucl-ex2016★ 8 cited

Status and Perspectives of the Search for Eta-Mesic Nuclei

Pawel Moskal, Magdalena Skurzok, Wojciech Krzemien

In this report the search for eta-mesic nuclei is reviewed. The brief description of the experimental studies is presented with a focus on the possible production of the eta-nucleu…

nucl-ex2016★ 60 cited

Potential of the J-PET detector for studies of discrete symmetries in decays of positronium atom - a purely leptonic system

P. Moskal, D. Alfs, T. Bednarski +24

The Jagiellonian Positron Emission Tomograph (J-PET) was constructed as a prototype of the cost-effective scanner for the simultaneous metabolic imaging of the whole human body. Be…

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

Study of nuclear effects on charm production in light-ion collisions

Three-Nucleon Dynamics in the dp breakup collisions at 190 MeV/nucleon using the WASA detector at COSY-Jülich

Feasibility studies of dark photon searches with the J-PET detector

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

Testing CPT symmetry in ortho-positronium decays with positronium annihilation tomography

Centrality determination in heavy-ion collisions with the LHCb detector

Search for the η mesic 3He in the pd→dpπ0 reaction with the WASA-at-COSY facility

Study of Three-Nucleon Dynamics in the dp breakup collisions using the WASA detector

Search for eta mesic 3He with the WASA-at-COSY facility in the pd-> 3He 2gamma and pd-> 3He 6gamma reactions

Backward single-pion production in the pd→3Heπ0 reaction with WASA-at-COSY

An Isotensor Dibaryon in the pp→ppπ+π− Reaction?

On the Production of an Isotensor Dibaryon in the pp→ppπ+π− Reaction

Total and differential cross sections of η-production in proton-deuteron fusion for excess energies between Qη​=13MeV and Qη​=81MeV

Spin dependence of η meson production in proton-proton collisions close to threshold

Importance of d-wave contributions in the charge symmetry breaking reaction dd→4Heπ0

Isoscalar Single-Pion Production in the Region of Roper and d∗(2380) Resonances

Search for eta-mesic 4He in the dd->3He n pi0 and dd->3He p pi- reactions with the WASA-at-COSY facility

Production and interaction of the eta meson with nucleons and nuclei

Measurement of the ω→π+π−π0 Dalitz plot distribution

Feasibility study for the measurement of πN TDAs at PANDA in pˉ​p→J/ψπ0

Search for an Isospin I =3 Dibaryon

Status and Perspectives of the Search for Eta-Mesic Nuclei

Potential of the J-PET detector for studies of discrete symmetries in decays of positronium atom - a purely leptonic system

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

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

Search for the $η$ mesic $^{3}$ He in the $p d \to d p π^{0}$ reaction with the WASA-at-COSY facility

Backward single-pion production in the $pd \to^{3} He π^{0}$ reaction with WASA-at-COSY

An Isotensor Dibaryon in the $pp \to pp π^{+} π^{-}$ Reaction?

On the Production of an Isotensor Dibaryon in the $pp \to pp π^{+} π^{-}$ Reaction

Total and differential cross sections of $η$ -production in proton-deuteron fusion for excess energies between $Q_{η} = 13 MeV$ and $Q_{η} = 81 MeV$

Importance of d-wave contributions in the charge symmetry breaking reaction $dd \to^{4} He π^{0}$

Isoscalar Single-Pion Production in the Region of Roper and $d^{*} (2380)$ Resonances

Measurement of the $ω \to π^{+} π^{-} π^{0}$ Dalitz plot distribution

Feasibility study for the measurement of $π N$ TDAs at PANDA in $p ˉ p \to J / ψ π^{0}$