Jul 6 – 13, 2022
Bologna, Italy
Europe/Rome timezone

Dynamics of quarks and gauge fields in the lowest-energy states in QCD and QED

Jul 7, 2022, 12:25 PM
Room 11 (Magenta A)

Room 11 (Magenta A)

Parallel Talk Dark Matter Dark Matter


Prof. Andrew Koshelkin


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].

[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.

[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),

[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).

[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).

[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].

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

Primary authors

Prof. Andrew Koshelkin Prof. Cheuk-Yin Wong (Physics Division, Oak Ridge National Laboratory)

Presentation materials