F. Goldenbaum

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-ex2006

Isotopic Production Cross Sections in Proton-Nucleus Collisions at 200 MeV

H. Machner, D. G. Aschman, K. Baruth-Ram +10

Intermediate mass fragments (IMF) from the interaction of $^{27}$ Al, $^{59}$ Co and $^{197}$ Au with 200 MeV protons were measured in an angular range from 20 degree to 120 degree in…

Fission studies with 140 MeV $I^\pm$ -Particles

A. Buttkewitz, H. H. Duhm, F. Goldenbaum +2

Binary fission induced by 140 MeV $I^\pm$ -particles has been measured for $^{nat}$ Ag, $^{139}$ La, $^{165}$ Ho and $^{197}$ Au targets. The measured quantities are the total kinetic…

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…

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…

Measurement of proton-proton elastic scattering into the Coulomb region at $P_{beam}$ = 2.5, 2.8 and 3.2 GeV/c

H. Xu, Y. Zhou, U. Bechstedt +18

The proton--proton elastic differential cross section at very small four momentum transfer squared has been measured at three different incident proton momenta in the range of 2.5…

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…

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…

physics.ins-det2019

Technical Design Report for the PANDA Endcap Disc DIRC

Panda Collaboration, F. Davi, W. Erni +460

PANDA (anti-Proton ANnihiliation at DArmstadt) is planned to be one of the four main experiments at the future international accelerator complex FAIR (Facility for Antiproton and I…

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-ex2007

Non-equilibrium emission of complex fragments from p+Au collisions at 2.5 GeV proton beam energy

A. Budzanowski, D. Filges, F. Goldenbaum +21

Energy and angular dependence of double differential cross sections d $^{2} I ¨ $ /d $I^c ◯$ dE was measured for reactions induced by 2.5 GeV protons on Au target with isotopic identification…

hep-ex2021

PANDA Phase One

G. Barucca, F. DavÃ¬, G. Lancioni +421

The Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany, provides unique possibilities for a new generation of hadron-, nuclear- and atomic physics experiments. T…

hep-ex2016

Feasibility studies of time-like proton electromagnetic form factors at PANDA at FAIR

PANDA Collaboration, B. Singh, W. Erni +502

Simulation results for future measurements of electromagnetic proton form factors at \PANDA (FAIR) within the PandaRoot software framework are reported. The statistical precision w…

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

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

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

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

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

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

nucl-ex2011

Sequential and simultaneous emission of fragments from p+Al collisions

M. Fidelus, D. Filges, F. Goldenbaum +17

The energy and angular dependencies of double differential cross sections d^2sigma/dOmegadE were measured for p,d,t,^{3,4,6}He,^{6,7,8}Li,{7,9,10}Be, and ^{10,11,12}B produced in c…

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

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

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

Variation of nonequilibrium processes in p+Ni system with beam energy

A. Budzanowski, M. Fidelus, D. Filges +17

The energy and angular dependence of double differential cross sections dsigma/dOmega dE were measured for p, d, t, 3,4He, 6,7Li, 7,9Be, and 10,11B produced in collisions of 0.175…

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

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

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

physics.ins-det2012

Technical Design Report for the: PANDA Micro Vertex Detector

PANDA Collaboration, W. Erni, I. Keshelashvili +454

This document illustrates the technical layout and the expected performance of the Micro Vertex Detector (MVD) of the PANDA experiment. The MVD will detect charged particles as clo…

nucl-ex2008

Competition of coalescence and "fireball" processes in nonequilibrium emission of light charged particles from p+Au collisions

A. Budzanowski, M. Fidelus, D. Filges +17

The energy and angular dependence of double differential cross sections was measured for p,d,t,He,Li,Be, and B isotopes produced in collisions of 1.2 and 1.9 GeV protons with Au ta…

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…

nucl-ex2015

Measurements of Branching Ratios for $I^\cdot$ Decays into Charged Particles

P. Adlarson, W. Augustyniak, W. Bardan +96

The WASA-at-COSY experiment has collected $3 \times 1 0^{7}$ events with $I^\cdot$ -mesons produced via the reaction $p d \to^{3} He I^\cdot$ at $T = 1.0 GeV$ . U…

nucl-ex2019

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-ex2017

Spin dependence of Î· 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} ppÎ· has bee…

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…

physics.ins-det2012

Technical Design Report for the: PANDA Straw Tube Tracker

PANDA Collaboration, W. Erni, I. Keshelashvili +470

This document describes the technical layout and the expected performance of the Straw Tube Tracker (STT), the main tracking detector of the PANDA target spectrometer. The STT encl…

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…

Measurement of the $n p \to d I ¨ ^{0} I ¨ ^{0}$ Reaction with Polarized Beam in the Region of the $d^{*} (2380)$ Resonance

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

We report on a high-statistics measurement of the most basic double pionic fusion reaction $n p \to d I ¨ ^{0} I ¨ ^{0}$ over the energy region of the $d^{*} (2380)$ resonance by use of a…

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

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

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

physics.ins-det2025

Performance of newly constructed plastic scintillator barrel in the WASA-FRS experiments and evaluation of radiation damage effects on multi-pixel photon counter

Y. K. Tanaka, R. Sekiya, K. Itahashi +70

A barrel-shaped plastic scintillation counter with Multi-Pixel Photon Counter (MPPC) readout has been developed and operated in the first WASA-FRS experimental campaign at GSI. The…

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

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 $dd \to^{4} He I ¨ ^{0}$ using the WASA-at-…

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

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

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

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…

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

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

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

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-ex2025

Three-Nucleon Dynamics in the dp breakup collisions at 190 MeV/nucleon using the WASA detector at COSY-JÃ¼lich

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…

physics.acc-ph2017

New method for a continuous determination of the spin tune in storage rings and implications for precision experiments

D. Eversmann, V. Hejny, F. Hinder +98

A new method to determine the spin tune is described and tested. In an ideal planar magnetic ring, the spin tune - defined as the number of spin precessions per turn - is given by…

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…

Comparison of nonequilibrium processes in p+Ni and p+Au collisions at GeV energies

A. Budzanowski, M. Fidelus, D. Filges +17

The energy and angular dependence of double differential cross sections d2sigma/dOmega dE were measured for p, d, t, 3,4,6He, 6,7,8Li, 7,9,10Be, 10,11B, and C produced in collision…

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…

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 $I^\cdot$ meson and $^{3}\hspace{-0.03cm}\mbox{He}$ nucleus performed using the WASA-at-COSY detector setup. In order to s…

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 $p n \to pp I ¨ ^{-}$ and $pp \to pp I ¨ ^{0}$ reactions have been performed by means of $p d$ collisions at $T_{p}$ = 1.2 GeV using the WASA detector se…

nucl-ex2025

Excitation Spectra of the $^{12} C (p, d)$ Reaction near the $I^\cdot^{'}$ -Meson Emission Threshold Measured in Coincidence with High-Momentum Protons

R. Sekiya, K. Itahashi, Y. K. Tanaka +74

The missing mass of the $^{12} C (p, d)$ reaction has been measured near the $I^\cdot^{'}$ -meson emission threshold in coincidence with a high-momentum proton to selectively collect $…

hep-ex2018

Search for $C$ violation in the decay $I^\cdot \to I ¨ ^{0} + e^{+} + e^{-}$ with WASA-at-COSY

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

We report on the investigation of the rare decay $I^\cdot \to I ¨ ^{0} + e^{+} + e^{-}$ which is of interest to study both $C$ violation in the electromagnetic interaction and t…

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…

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-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…

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…

Evidence of Ni break-up from total production cross sections in p+Ni collisions

A. Budzanowski, M. Fidelus, D. Filges +17

The total production cross sections of light charged particles (LCPs), intermediate mass fragments (IMFs) and heavy reaction products of p+Ni collisions available in the literature…

hep-ex2016

Experimental access to Transition Distribution Amplitudes with the PANDA experiment at FAIR

PANDA Collaboration, B. P. Singh, W. Erni +532

Baryon-to-meson Transition Distribution Amplitudes (TDAs) encoding valuable new information on hadron structure appear as building blocks in the collinear factorized description fo…