Pith. sign in

REVIEW 6 cited by

Checking the $^8$Be anomaly with a two-arm electron positron pair spectrometer

Not yet reviewed by Pith; the record is open.

Re-run · record.json Download PDF Read on arXiv ↗

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 2401.11676 v2 pith:LIQNQHES submitted 2024-01-22 nucl-ex physics.ins-det

Tran The Anh , Tran Dinh Trong , Attila J. Krasznahorkay , Attila Krasznahorkay , József Molnár , Zoltán Pintye , Nguyen Ai Viet , Nguyen The Nghia
show 4 more authors
Do Thi Khanh Linh Bui Thi Hoa Le Xuan Chung Nguyen Tuan Anh
This is my paper
classification nucl-exphysics.ins-det
keywords resonanceanomalyconfirmexperimentpairspectrometerabsenceacceptance
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
abstract

We have repeated the experiment performed recently by Krasznahorkay et al., (Phys. Rev. Lett. 116, 042501 (2016)), which may indicate a new particle called X17 in the literature. In order to get a reliable, and independent result, we used a different type of electron-positron pair spectrometer which have a more simple acceptance/efficiency as a function of the correlation angle, but the other conditions of the experiment were very similar to the published ones. We could confirm the presence of the anomaly measured at the E$_x$=18.15 MeV resonance, and also confirm their absence at the E$_x$=17.6 MeV resonance, and at E$_p$= 800 keV off resonance energies.

Discussion (0). Sign in to comment.

Forward citations

Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Possible Evidence for Neutral Color-Singlet $q\bar q$ Quark Matter from High-Energy Pb-Emulsion Collisions

    hep-ph 2026-04 unverdicted novelty 7.0 of 10

    The complex e+e- invariant mass spectrum below 50 MeV is attributed to thermal annihilation and bound states of QED-deconfined and confined neutral q bar q quark matter.

  2. Updated E141 constraints on a long-lived $X_{17}$ vector boson

    hep-ph 2026-07 conditional novelty 6.0 of 10

    A refined simulation of SLAC E141 shows the experiment's old exclusion region does not cover the 16.9 MeV X17, leaving a window at ε_e between 6.5e-5 and 1.1e-4.

  3. Flavor specific chiral $U(1)_X$ framework for explaining the ATOMKI anomaly

    hep-ph 2026-04 unverdicted novelty 6.0 of 10

    A gauged, flavor-specific U(1)_X two-Higgs-doublet model can realize the axial-vector Z' couplings needed to explain the ATOMKI 8Be and 4He anomalies while evading current bounds.

  4. The X17 with Chiral Couplings

    hep-ph 2026-02 conditional novelty 6.0 of 10

    A spin-1 X17 with chiral couplings fits the ATOMKI nuclear anomalies at 99% CL only in a parameter region that atomic parity violation and KLOE-2/NA64 exclude, driven mainly by the 12C(17.23) transition.

  5. Probing the ATOMKI X17 vector boson using Dalitz decays $V\to Pe^+e^-$

    hep-ph 2025-06 conditional novelty 6.0 of 10

    In a quark-model calculation, X17 contributions to D*, B*, and J/psi Dalitz decays are too small to explain the BESIII D*0 e+e- excess unless quark couplings are far outside ATOMKI-favored ranges.

  6. Potential for the discovery of the protophobic boson at the STCF

    hep-ph 2025-12 conditional novelty 5.0 of 10

    Detector-level simulations indicate the proposed STCF drift chamber could discover the 17 MeV protophobic X17 boson through displaced electron-positron vertices if Standard Model backgrounds stay below about 10^4 even...

Pith tools