The 95 GeV bump is suspiciously close to the mass of the Z boson plus the mass of the b-quark. The 152 GeV bump is close to the mass of two W bosons reduced by the mass of two b-quarks.
The implication of these coincidences is that there could be an explanation along the lines of diphoton signals that are missing decay products that prevent them from accurately reflecting the true source of the diphoton signals.
Also, given the modest statistical significant of these alleged resonances, it could be that these are simply the product of statistical flukes in the background estimations or some other sort of measurement errors.
After the Higgs discovery, the question of whether particles beyond those of the Standard Model exist is more pressing than ever. In this context, the scalar sector is particularly promising, since it lies at the core of the internal problems of the Standard Model, while extensions of it allow us to resolve them and can provide explanations for Dark matter, non-zero neutrino masses, inflation etc.
In these proceedings, we review the indications for new Higgs bosons at the electroweak scale with masses of ≈95 GeV and ≈152 GeV. These excesses are most significant in the di-photon channel but are supported by weaker-than-expected limits in other decay modes.
While for the 95 GeV candidate the production mechanism is mostly unknown, the (hypothetical) 152 GeV Higgs is dominantly produced in association with leptons, (b) jets and missing energy, pointing towards the Drell-Yan production of an SU(2)L triplet with Y=0. Interestingly, this model predicts t→H±b with H±→WZ, which resembles the signature of tt¯Z production in the Standard Model and is in fact preferred by current data.
Finally, we investigate the possibility that the significant tensions between the Standard Model predictions and the measurements in differential top-quark distributions are due to contamination from new physics involving both the 152 GeV and the 95 GeV scalar.
Andreas Crivellin, et al., "Indications for New Higgs Bosons" arXiv:2605.04233 (May 5, 2026) (Proceedings of the Corfu Summer Institute 2025 "School and Workshops on Elementary Particle Physics and Gravity" (CORFU2025)).
1 comment:
what is your thoughts on this is a peer review journal
Journal of Physics G: Nuclear and Particle Physics
Search for new particles decaying into electron pairs of mass below 100 MeV/
P L Jain and G Singh
Abstract
We report results on 1220 electron pairs produced from a 207Pb beam at 160 A GeV in nuclear emulsion with invariant mass Q ranging between 1 and 100 MeV and lifetime τ between 10−15 s and 10−12 s. These electron pairs were produced at a distance of more than 50 µm from the primary interactions—this distance eliminates contamination due to Dalitz pairs. After subtracting the background pairs from the materialization of photons and also due to the decay of π0 → 2γ from the data, they exhibit enhancement at low mass Q = 6–20 MeV with narrow peaks at 7 ± 1 MeV, 19 ± 1 MeV and τ ⩽ 10−13 s.
Published 28 November 2006 • 2007 IOP Publishing Ltd
Journal of Physics G: Nuclear and Particle Physics, Volume 34,Number 1Citation P L Jain and G Singh 2007 J. Phys. G: Nucl. Part. Phys. 34 129DOI 10.1088/0954-3899/34/1/009
of interest
Dalitz pairs. After subtracting the background pairs from the materialization of photons and also due to the decay of π0 → 2γ from the data, they exhibit enhancement at low mass Q = 6–20 MeV with narrow peaks at 7 ± 1 MeV, 19 ± 1 MeV and τ ⩽ 10−13 s.
19 ± 1 MeV is in the range of mass of x17
and also note this is a peer review journal
This paper, published in the International Journal of Modern Physics E in 2011 (Vol. 20, p. 1787), provides a re-analysis of electron-positron (\(e^{+}e^{-}\)) pair-production data
International Journal of Modern Physics E
A REEVALUATION OF EVIDENCE FOR LIGHT NEUTRAL BOSONS IN NUCLEAR EMULSIONS
F. W. N. DE BOER
and
C. A. FIELDS
Abstract
Electron–positron pair production data obtained by bombardment of emulsion detectors with either cosmic rays or projectiles with masses between 1 and 207 amu and kinetic energies between 18 GeV and 32 TeV have been reanalyzed using a consistent and conservative model of the background from electromagnetic pair conversion. The combined data yield a spectrum of putative neutral bosons decaying to e+e- pairs, with masses between 3 and 20 MeV/c2 and femtosecond lifetimes. The statistical significance against background for these "X-bosons" varies between 2σ and 8σ. The cross-section for direct production of X-bosons increases slowly with projectile energy, remaining over 1,000 times smaller than the pion production cross-section.
https://doi.org/10.1142/S021830131101960XCited by:7
"The combined data yield a spectrum of putative neutral bosons decaying to e+e- pairs, with masses between 3 and 20 MeV/c2 and femtosecond lifetimes. The statistical significance against background for these "X-bosons" varies between 2σ and 8σ. "
2 peer review journal used Electron–positron pair production data obtained by bombardment of lead emulsion detectors at CERN saw X-bosons decay Electron–positron pair production data19 ± 1 MeV and τ ⩽ 10−13 s.
Cheuk-Yin Wong
The invariant mass spectrum of pairs produced in high-energy Pb-emulsion collisions at 160 A GeV at CERN SPS exhibits a complex structure of many resonances resting on top of a broad enhancement at invariant masses below 50 MeV, with the prominent resonance at 19 1 MeV providing independent support for the hypothetical X17 particle
Cheuk-Yin Wong
Physics Division, Oak Ridge National Laboratory
Verified email at ornl.gov
Advisor:
John Archibald Wheeler
present
Oak Ridge
1966
PHD, Princeton U.
UNDERGRADUATE, Princeton U.
https://inspirehep.net/authors/983243
Princeton U is top tier physics Edward Witten
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