Search Results - "Bergmann, F. S."
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Evidence for a New Resonance from Polarized Neutron-Proton Scattering
Published in Physical review letters (23-05-2014)“…Exclusive and kinematically complete high-statistics measurements of quasifree polarized np scattering have been performed in the energy region of the narrow…”
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Spin Dependence of η Meson Production in Proton-Proton Collisions Close to Threshold
Published in Physical review letters (12-01-2018)“…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…”
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Abashian-Booth-Crowe effect in basic double-pionic fusion: a new resonance?
Published in Physical review letters (17-06-2011)“…We report on an exclusive and kinematically complete high-statistics measurement of the basic double-pionic fusion reaction pn→dπ(0)π(0) over the full energy…”
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Search for a dark photon in the π0→e+e−γ decay
Published in Physics letters. B (07-10-2013)“…The presently world largest data sample for π0→γe+e− decays studies containing nearly 5×105 events was collected using the WASA detector at COSY. A search for…”
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Study of Three-Nucleon Dynamics in the dp breakup collisions using the WASA detector
Published 14-11-2019“…Phys. Rev. C 101, 044001 (2020) Differential cross section for the 1H(d,pp)n breakup reaction at deuteron beam energy of 340 MeV has been measured with the use…”
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Isotensor Dibaryon in the pp→ppπ^{+}π^{-} Reaction?
Published in Physical review letters (03-08-2018)“…Exclusive measurements of the quasifree pp→ppπ^{+}π^{-} reaction have been carried out at WASA@COSY by means of pd collisions at T_{p}=1.2 GeV. Total and…”
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Differential cross sections for neutron-proton scattering in the region of the d (2380) dibaryon resonance
Published in Physical review. C, Nuclear physics (10-07-2020)“…Differential cross sections have been extracted from exclusive and kinematically complete high-statistics measurements of quasifree polarized (n) over barp…”
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Spin dependence of {\eta} meson production in proton-proton collisions close to threshold
Published 28-11-2017“…Phys. Rev. Lett. 120, 022002 (2018) Taking advantage of the high acceptance and axial symmetry of the WASA-at-COSY detector, and the high degree of the…”
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Total and differential cross sections of η-production in proton–deuteron fusion for excess energies between Q = 13 MeV and Q = 81 MeV
Published in Physics letters. B (10-07-2018)Get full text
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Exclusive measurement of the η→π+π−γ decay
Published in Physics letters. B (20-01-2012)“…An exclusive measurement of the decay η→π+π−γ has been performed at the WASA facility at COSY. The η mesons were produced in the fusion reaction pd→He3 X at a…”
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Search for eta-mesic 4He in the dd->3He n pi0 and dd->3He p pi- reactions with the WASA-at-COSY facility
Published 22-11-2016“…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…”
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Search for an Isospin I =3 Dibaryon
Published 04-10-2016“…Various theoretical calculations based on QCD or hadronic interactions predict that in addition to the recently observed dibaryon resonance $d^*(2380)$ with…”
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Isotensor Dibaryon in the p p → p p π + π − Reaction?
Published in Physical review letters (01-08-2018)Get full text
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Isotensor Dibaryon in the pp -> pp pi(+)pi(-) Reaction?
Published in Physical review letters (2018)“…Exclusive measurements of the quasifree pp -> pp pi(+)pi(-) reaction have been carried out at WASA@ COSY by means of pd collisions at T-p = 1.2 GeV. Total…”
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Importance of d-wave contributions in the charge symmetry breaking reaction dd -> He-4 pi(0)
Published in Physics letters. B (2018)“…This letter reports a first quantitative analysis of the contribution of higher partial waves in the charge symmetry breaking reaction dd -> He-4 pi(0)…”
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Search for C violation in the decay eta -> pi(0)e(+)e(-) with WASA-at-COSY
Published in Physics letters. B (2018)“…We report on the search for the rare decay eta -> pi(0)e(+)e(-) which is of interest to study C violation in the electromagnetic interaction which would…”
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Measurement of the ω → π + π − π 0 Dalitz plot distribution: The WASA-at-COSY Collaboration
Published in Physics letters. B (2017)“…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…”
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Charge Symmetry Breaking in dd->4He{\pi}0 with WASA-at-COSY
Published 15-09-2014“…Phys. Lett. B 739 (2014) 44 Charge symmetry breaking (CSB) observables are a suitable experimental tool to examine effects induced by quark masses on the…”
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Search for eta-mesic He-4 in the dd -> (3)Hen pi(0) and dd -> (3)Hep pi(-) reactions with the WASA-at-COSY facility
Published in Nuclear physics. A (2017)“…The search for He-4-eta bound states was performed with the WASA-at-COSY facility via the measurement of the excitation function for the dd -> (3)Hen pi(0)…”
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