S. Schadmand
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View article: Excitation Spectra of the ${}^{12}{\rm C}(p,d)$ Reaction near the $η'$-Meson Emission Threshold Measured in Coincidence with High-Momentum Protons
Excitation Spectra of the ${}^{12}{\rm C}(p,d)$ Reaction near the $η'$-Meson Emission Threshold Measured in Coincidence with High-Momentum Protons Open
The missing mass of the ${}^{12}{\rm C}(p,d)$ reaction has been measured near the $η'$-meson emission threshold in coincidence with a high-momentum proton to selectively collect $η'$-${}^{11}{\rm C}$ mesic nucleus formation events at GSI, …
View article: Radiative corrections: from medium to high energy experiments
Radiative corrections: from medium to high energy experiments Open
Radiative corrections are crucial for modern high-precision physics experiments, and are an area of active research in the experimental and theoretical community. Here we provide an overview of the state of the field of radiative correctio…
View article: Studies of three-and four-body hypernuclei with heavy-ion beams, nuclear emulsions and machine learning
Studies of three-and four-body hypernuclei with heavy-ion beams, nuclear emulsions and machine learning Open
Interests on few-body hypernuclei have been increased by recent results of experiments employing relativistic heavy ion beams. Some of the experiments have revealed that the lifetime of the lightest hypernucleus, hypertriton, is significan…
View article: Study of light hypernuclei in Europe: The hypertriton and nnΛ puzzles
Study of light hypernuclei in Europe: The hypertriton and nnΛ puzzles Open
The current understanding of light hypernuclei, which are sub-atomic nuclei with strangeness, is being challenged and studied in detail by several European research groups and collaborations. In recent years, studies of hypernuclei using h…
View article: New results on light nuclei, hyperons and hypernuclei from HADES (HADES collaboration)
New results on light nuclei, hyperons and hypernuclei from HADES (HADES collaboration) Open
In March 2019 the HADES experiment recorded 14 billion Ag+Ag collisions at √ s NN = 2.55 GeV as a part of the FAIR phase-0 physics program. In this contribution, we present and investigate our capabilities to reconstruct and analyze weakly…
View article: Strange Hadron Spectroscopy with Secondary KL Beam in Hall D
Strange Hadron Spectroscopy with Secondary KL Beam in Hall D Open
We propose to create a secondary beam of neutral kaons in Hall D at Jefferson Lab to be used with the GlueX experimental setup for strange hadron spectroscopy. The superior CEBAF electron beam will enable a flux on the order of $1\times 10…
View article: Three-nucleon dynamics in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi mathvariant="italic">dp</mml:mi></mml:math> breakup collisions using the WASA detector at COSY-Jülich
Three-nucleon dynamics in breakup collisions using the WASA detector at COSY-Jülich Open
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-proton coincidences registered at Forward Detector has been…
View article: Spin Dependence of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>η</mml:mi></mml:math> Meson Production in Proton-Proton Collisions Close to Threshold
Spin Dependence of Meson Production in Proton-Proton Collisions Close to Threshold Open
Taking advantage of the high acceptance and axial symmetry of the WASA-at-COSY detector, and the high polarization degree of the proton beam of COSY, the reaction p[over →]p→ppη has been measured close to threshold to explore the analyzing…
View article: Measurement of the ω→π+π−π0 Dalitz plot distribution
Measurement of the ω→π+π−π0 Dalitz plot distribution Open
Using the production reactions pd -> He-3 omega and pp -> pp omega, the Dalitz plot distribution for the omega -> pi(+)pi(-)pi(0)decay is studied with the WASA detector at COSY, based on a combined data sample of (4.408 +/- 0.042)…
View article: Isoscalar Single-Pion Production in the Region of Roper and $d^*(2380)$ Resonances
Isoscalar Single-Pion Production in the Region of Roper and $d^*(2380)$ Resonances Open
Exclusive measurements of the quasi-free $pn \to ppπ^-$ and $pp \to ppπ^0$ reactions have been performed by means of $pd$ collisions at $T_p$ = 1.2 GeV using the WASA detector setup at COSY. Total and differential cross sections have been …
View article: Measurements of branching ratios for <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>η</mml:mi></mml:math> decays into charged particles
Measurements of branching ratios for decays into charged particles Open
The WASA-at-COSY experiment has collected 3 x 10(7) events with eta mesons produced via the reaction pd -> He-3 eta at T = 1.0 GeV. Using this data set, we evaluate the branching ratios of the decays eta -> pi(+)pi(-)gamma, eta -> e(+)e(-)…