References quoted in the XUNDL dataset: 4HE 3H(P,G):XUNDL-5

3 references found.

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2016KR01

Phys.Rev.Lett. 116, 042501 (2016)

A.J.Krasznahorkay, M.Csatlos, L.Csige, Z.Gacsi, J.Gulyas, M.Hunyadi, I.Kuti, B.M.Nyako, L.Stuhl, J.Timar, T.G.Tornyi, Zs.Vajta, T.J.Ketel, A.Krasznahorkay

Observation of Anomalous Internal Pair Creation in ⁸Be: A Possible Indication of a Light, Neutral Boson

NUCLEAR REACTIONS ⁷Li(p, γ), E=0.441, 1.03 MeV; measured reaction products, Eβ, Iβ, Eγ, Iγ; deduced total energy spectrum and angular correlation of the electron-positron pairs for the isovector magnetic dipole to the ground state transitions, invariant mass distribution, neutral isoscalar particle mass. Comparison with available data.

doi: 10.1103/PhysRevLett.116.042501

2019KR17

Acta Phys.Pol. B50, 675 (2019)

A.J.Krasznahorkay, M.Csatlos, L.Csige, D.Firak, J.Gulyas, A.Nagy, N.Sas, J.Timar, T.G.Tornyi, A.Krasznahorkay

On the X(17) Light-particle Candidate Observed in Nuclear Transitions

NUCLEAR REACTIONS ⁷Li, ³H(p, γ) E=450, 900, 1100 keV; measured reaction products, Eβ, Iβ, Eγ, Iγ; deduced total energy spectrum and angular correlation of the electron-positron pairs from transitions in ⁸Be and ⁴He, invariant mass distribution, branching ratio, neutral isoscalar particle mass.

doi: 10.5506/aphyspolb.50.675

2021KR08

Phys.Rev. C 104, 044003 (2021)

A.J.Krasznahorkay, M.Csatlos, L.Csige, J.Gulyas, A.Krasznahorkay, B.M.Nyako, I.Rajta, J.Timar, I.Vajda, N.J.Sas

New anomaly observed in ⁴He supports the existence of the hypothetical X17 particle

NUCLEAR REACTIONS ³H(p, e⁺e^-)⁴He, E=510, 610, 900 keV; measured electron and positrons, energy-sum spectra and angular correlation of e⁺e^- pairs using scintillation detectors and double-sided silicon strip detectors (DSSD) at the 2-MV Tandetron accelerator of ATOMKI, Debrecen; deduced anomalous excess of e⁺e^- pairs around 115°, interpreted as creation and subsequent decay of a light particle during the direct capture process; extracted internal pair creation coefficient (IPCC), X17 boson branching ratio, mass of X17 particle with confidence level; likely the same as X17 particle suggested by 2016Kr01 (Phys. Rev. Lett. 116, 042501). ⁷Li(p, e⁺e^-)⁸Be, E=441 keV; measured angular correlation of e⁺e^- pairs for the 17.6-MeV, M1 transition in ⁸Be as a test of the experimental apparatus and methodology.

doi: 10.1103/PhysRevC.104.044003