wovepaper — the arXiv observatory

papers

Publications (23)

nucl-ex2013

Measurement of the $p n \to pp I ¨ ^{0} I ¨ ^{-}$ Reaction in Search for the Recently Observed Resonance Structure in $d I ¨ ^{0} I ¨ ^{0}$ and $d I ¨ ^{+} I ¨ ^{-}$ systems

P. Adlarson, W. Augustyniak, W. Bardan +110

Exclusive measurements of the quasi-free $p n \to pp I ¨ ^{0} I ¨ ^{-}$ reaction have been performed by means of $p d$ collisions at $T_{p}$ = 1.2 GeV using the WASA detector setup at COSY. Tota…

nucl-ex2010

Systematic Study of Two-Pion Production in NN Collisions -- from Single-Baryon to Di-Baryon Excitations

T. Skorodko, M. Bashkanov, H. Clement +5

The two-pion production in nucleon-nucleon collisions has been studied by exclusive and kinematically complete experiments from threshold up to $T_{p}$ = 1.36 GeV at CELSIUS-WASA. At…

hep-ex2014

Measurement of the $I^\cdot \to I ¨ ^{+} I ¨ ^{-} I ¨ ^{0}$ Dalitz plot distribution

P. Adlarson, W. Augustyniak, W. Bardan +107

Dalitz plot distribution of the $I^\cdot \to I ¨ ^{+} I ¨ ^{-} I ¨ ^{0}$ decay is determined using a data sample of $1.2 \cdot 1 0^{7}$ $I^\cdot$ mesons from $p d \to^{3} He I^\cdot$ reaction at 1 GeV collected…

hep-ex2020

Differential Cross Sections for Neutron-Proton Scattering in the Region of the $d^{*} (2380)$ Dibaryon Resonance

P. Adlarson, W. Augustyniak, W. Bardan +102

Differential cross sections have been extracted from exclusive and kinematically complete high-statistics measurements of quasifree polarized $n p$ scattering performed in the…

hep-ex2014

Ï^0 Ï^0 Production in Proton-Proton Collisions at Tp=1.4 GeV

P. Adlarson, C. Adolph, W. Augustyniak +111

The reaction pp->pppi0pi0 has been investigated at a beam energy of 1.4 GeV using the WASA-at-COSY facility. The total cross section is found to be (324 +- 21_systematic +- 58_norm…

nucl-ex2014

Measurement of the $n p \to n p I ¨ ^{0} I ¨ ^{0}$ Reaction in Search for the Recently Observed $d^{*} (2380)$ Resonance

P. Adlarson, W. Augustyniak, W. Bardan +99

Exclusive measurements of the quasi-free $n p \to n p I ¨ ^{0} I ¨ ^{0}$ reaction have been performed by means of $d p$ collisions at $T_{d}$ = 2.27 GeV using the WASA detector setup at COSY. Tot…

nucl-ex2014

Evidence for a New Resonance from Polarized Neutron-Proton Scattering

P. Adlarson, W. Augustyniak, W. Bardan +104

Exclusive and kinematically complete high-statistics measurements of quasifree polarized $n p$ scattering have been performed in the energy region of the narrow resonance stru…

nucl-ex2013

Search for the eta-mesic 4He with WASA-at-COSY detector

P. Adlarson, W. Augustyniak, W. Bardan +111

An exclusive measurement of the excitation function for the dd->3Heppi- reaction was performed at the Cooler Synchrotron COSY-Juelich with the WASA-at-COSY detection system. The da…

nucl-ex2014

Neutron-Proton Scattering in the Context of the $d^{*}$ (2380) Resonance

P. Adlarson, W. Augustyniak, W. Bardan +105

New data on quasifree polarized neutron-proton scattering, in the region of the recently observed $d^{*}$ resonance structure, have been obtained by exclusive and kinematically compl…

nucl-ex2009

Exclusive measurement of two-pion production in the dd --> 4Hepipi reaction

S. Keleta, Chr. Bargholtz, M. Bashkanov +46

The results from the first kinematically complete measurement of the dd --> 4Hepipi reaction are reported. The aim was to investigate a long standing puzzle regarding the origin of…

nucl-ex2014

Investigation of the dd -> 3He n Ï0 reaction with the FZ JÃ¼lich WASA-at-COSY facility

COSY Collaboration, P. Adlarson, W. Augustyniak +112

An exclusive measurement of the dd -> 3He n Ï0 reaction was carried at a beam momentum of p = 1.2 GeV/c using the WASA-at-COSY facility. For the first time data on the total cross…

nucl-ex2012

ABC Resonance Structure in the Double-Pionic Fusion to 4He

P. Adlarson, W. Augustyniak, W. Bardan +109

Exclusive and kinematically complete high-statistics measurements of the double pionic fusion reaction $dd \to^{4}$ He $I ¨ ^{0} I ¨ ^{0}$ have been performed in the energy range 0.8 - 1.4 GeV…

nucl-ex2014

ABC Effect and Resonance Structure in the Double-Pionic Fusion to $^{3}$ He

P. Adlarson, W. Augustyniak, W. Bardan +100

Exclusive and kinematically complete measurements of the double pionic fusion to $^{3}$ He have been performed in the energy region of the so-called ABC effect, which denotes a pronou…

nucl-ex2012

Isospin Decomposition of the Basic Double-Pionic Fusion in the Region of the ABC Effect

P. Adlarson, W. Augustyniak, W. Bardan +111

Exclusive and kinematically complete high-statistics measurements of the basic double pionic fusion reactions pn -> dpi0pi0, pn -> d pi+pi- and pp -> dpi+pi0 have been carried out…

nucl-ex2009

Double-Pionic Fusion of Nuclear Systems and the ABCEffect -- Aproaching a Puzzle by Exclusive and Kinematically Complete Measurements

M. Bashkanov, C. Bargholtz, M. Berlowski +46

The ABC effect - a puzzling low-mass enhancement in the $I ¨ I ¨ $ invariant mass spectrum - is well-known from inclusive measurements of two-pion production in nuclear fusion reaction…

nucl-ex2014

Charge Symmetry Breaking in dd->4HeÏ0 with WASA-at-COSY

COSY Collaboration, P. Adlarson, W. Augustyniak +102

Charge symmetry breaking (CSB) observables are a suitable experimental tool to examine effects induced by quark masses on the nuclear level. Previous high precision data from TRIUM…

nucl-ex2011

ABC Effect in Basic Double-Pionic Fusion --- Observation of a new resonance?

P. Adlarson, C. Adolph, W. Augustyniak +116

We report on a high-statistics measurement of the basic double pionic fusion reaction $p n \to d I ¨ ^{0} I ¨ ^{0}$ over the energy region of the so-called ABC effect, a pronounced low-mass e…

nucl-ex2011

Exclusive Measurement of the eta --> pi+ pi- gamma Decay

P. Adlarson, C. Adolph, W. Augustyniak +119

An exclusive measurement of the decay eta --> pi+ pi- gamma has been performed at the WASA facility at COSY. The eta mesons were produced in the fusion reaction pd --> 3He X at a p…

nucl-ex2006

Two-Pion Production in Nucleon-Nucleon Collisions and the ABC-Effect - Approaching a Puzzleby exclusive and Kinematically complete Measurements

T. Skorodko, M. Bashkanov, C. Bargholtz +50

The ABC effect - a puzzling low-mass enhancement in the $I ¨ I ¨ $ invariant mass spectrum - is known from inclusive measurements of two-pion production in nuclear collisions, where it…

hep-ex2013

Search for a dark photon in the $I ¨ ^{0} \to e^{+} e^{-} I^^{3}$ decay

COSY Collaboration, P. Adlarson, W. Augustyniak +113

The presently world largest data sample of pi0 --> gamma e+e- decays containing nearly 5E5 events was collected using the WASA detector at COSY. A search for a dark photon U produc…

nucl-ex2007

Single- and Double-Pion Production in Nucleon Collisions on the Nucleon and on Nuclei -- the ABC Effect and its Possible Origin in a Dibaryonic Resonance

H. Clement, M. Bashkanov, E. Doroshkevich +5

The ABC effect -- an intriguing low-mass enhancement in the $I ¨ I ¨ $ invariant mass spectrum -- is known from inclusive measurements of two-pion production in nuclear fusion reaction…

nucl-ex2014

Cross section ratio and angular distributions of the reaction p + d -> 3He + eta at 48.8 MeV and 59.8 MeV excess energy

P. Adlarson, W. Augustyniak, W. Bardan +104

We present new data for angular distributions and on the cross section ratio of the p + d -> 3He + eta reaction at excess energies of Q = 48.8 MeV and Q = 59.8 MeV. The data have b…

nucl-th2007

Influence of the N(1440) and N(1535) Resonances in Intermediate Energy pp and np Scattering

A. Pricking, Ch. Elster, A. Gardestig +2

Motivated by a recent measurement of proton-proton elastic scattering observables up to 3.0 GeV, we investigate the description of those data within models of the nucleon-nucleon (…

Publications (23)

Measurement of the pn→ppI¨0I¨− Reaction in Search for the Recently Observed Resonance Structure in dI¨0I¨0 and dI¨+I¨− systems

Systematic Study of Two-Pion Production in NN Collisions -- from Single-Baryon to Di-Baryon Excitations

Measurement of the I^⋅→I¨+I¨−I¨0 Dalitz plot distribution

Differential Cross Sections for Neutron-Proton Scattering in the Region of the d∗(2380) Dibaryon Resonance

Ï^0 Ï^0 Production in Proton-Proton Collisions at Tp=1.4 GeV

Measurement of the np→npI¨0I¨0 Reaction in Search for the Recently Observed d∗(2380) Resonance

Evidence for a New Resonance from Polarized Neutron-Proton Scattering

Search for the eta-mesic 4He with WASA-at-COSY detector

Neutron-Proton Scattering in the Context of the d∗(2380) Resonance

Exclusive measurement of two-pion production in the dd --> 4Hepipi reaction

Investigation of the dd -> 3He n Ï0 reaction with the FZ JÃ¼lich WASA-at-COSY facility

ABC Resonance Structure in the Double-Pionic Fusion to 4He

ABC Effect and Resonance Structure in the Double-Pionic Fusion to 3He

Isospin Decomposition of the Basic Double-Pionic Fusion in the Region of the ABC Effect

Double-Pionic Fusion of Nuclear Systems and the ABCEffect -- Aproaching a Puzzle by Exclusive and Kinematically Complete Measurements

Charge Symmetry Breaking in dd->4HeÏ0 with WASA-at-COSY

ABC Effect in Basic Double-Pionic Fusion --- Observation of a new resonance?

Exclusive Measurement of the eta --> pi+ pi- gamma Decay

Two-Pion Production in Nucleon-Nucleon Collisions and the ABC-Effect - Approaching a Puzzleby exclusive and Kinematically complete Measurements

Search for a dark photon in the I¨0→e+e−I^3 decay

Single- and Double-Pion Production in Nucleon Collisions on the Nucleon and on Nuclei -- the ABC Effect and its Possible Origin in a Dibaryonic Resonance

Cross section ratio and angular distributions of the reaction p + d -> 3He + eta at 48.8 MeV and 59.8 MeV excess energy

Influence of the N*(1440) and N*(1535) Resonances in Intermediate Energy pp and np Scattering

Measurement of the $p n \to pp I ¨ ^{0} I ¨ ^{-}$ Reaction in Search for the Recently Observed Resonance Structure in $d I ¨ ^{0} I ¨ ^{0}$ and $d I ¨ ^{+} I ¨ ^{-}$ systems

Measurement of the $I^\cdot \to I ¨ ^{+} I ¨ ^{-} I ¨ ^{0}$ Dalitz plot distribution

Differential Cross Sections for Neutron-Proton Scattering in the Region of the $d^{*} (2380)$ Dibaryon Resonance

Ï^0 Ï^0 Production in Proton-Proton Collisions at Tp=1.4 GeV

Measurement of the $n p \to n p I ¨ ^{0} I ¨ ^{0}$ Reaction in Search for the Recently Observed $d^{*} (2380)$ Resonance

Neutron-Proton Scattering in the Context of the $d^{*}$ (2380) Resonance

Investigation of the dd -> 3He n Ï0 reaction with the FZ JÃ¼lich WASA-at-COSY facility

ABC Effect and Resonance Structure in the Double-Pionic Fusion to $^{3}$ He

Charge Symmetry Breaking in dd->4HeÏ0 with WASA-at-COSY

Search for a dark photon in the $I ¨ ^{0} \to e^{+} e^{-} I^^{3}$ decay

Influence of the N(1440) and N(1535) Resonances in Intermediate Energy pp and np Scattering