### Speaker

### Description

We examine the dynamics of quarks and gauge fields in QCD and QED

interactions in the lowest energy states with approximate cylindrical

symmetry, in a flux tube model. Using the action integral, we

separate out the (3+1)D in terms of the transverse and the

longitudinal degrees of freedom and solve the resultant equations of

motion. We find that there may be localized and stable states of QCD

and QED collective $q \bar q$ excitations, showing up as particles whose masses

depend on the QCD and QED coupling constants and the flux-tube radius [1].

Along with known standard stable collective QCD excitations of the

quark-QCD-QED system, there may be stable QED collective $q\bar q$ excitations, which can be

good candidates for the X17 particle [2], the E38 particle [3], and anomalous soft photons [4,5] observed recently in

the region of many tens of MeV, as dicussed in [6].

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\large

[1] A. Koshelkin and C. Y. Wong, {\it

Dynamics of quarks and gauge fields in the lowest-energy states in QCD and QED}, arxiv:2111.14933.

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[2] A. J. Krasznahorkay $et~al.$, {\it Observation of anomalous

internal pair creation in 8Be: a possible indication of a

light, neutral boson}, Phys. Rev. Lett. 116, 042501 (2016),

[arXiv:1504.01527].

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[3] K. Abraamyan, et.al, {\it Check of the structure in photon pairs

spectra at the invariant mass of about 38 MeV}, EPJ Web of

Conferences 204, 08004 (2019).

\vspace*{0.3cm}

[4] A. Belogianni $et~ al.$ (WA102 Collaboration), {\it Observation of a soft photon signal in excess of QED expectations in

$pp$ interactions}, Phys. Lett. B548, 129 (2002).

\vspace*{0.3cm}

[5] J. Abdallah $et~al.$ (DELPHI Collaboration), {\it

Evidence for an excess of soft photons in hadronic decays of Z$^0$},

Eur. Phys. J. C47, 273 (2006), [arXiv:hep-ex/0604038].

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[6]

C. Y. Wong, {\it Open string QED meson description of the X17

particle and dark matter}, JHEP 08 (2020) 165, [arxiv:2001.04864].

In-person participation | Yes |
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