Color-Singlet and Color-Octet qq Quark Matters
DOI:
https://doi.org/10.15407/ujpe71.2.151Keywords:
QED mesons, color-singlet and color-octet qq quark matterAbstract
Quarks and antiquarks carry color and electric charges and belong to the color-triplet 3 group and the color-antitriplet 3- group respectively. The product groups of 3 and 3- consist of the color-singlet 1 and the color-octet 8 subgroups. Therefore, quarks and antiquarks combine to form color-singlet [qq-]1 quark matter and color-octet [qq-]8 quark matter. The color-octet quark matter corresponds to the conventional understanding of qq- quark matter whereas the colorsinglet quark matter remains largely unexplored and is proposed here for investigation. The color-singlet quark matter with two flavors can be separated into charged and neutral colorsinglet quark matters. In the neutral color-singlet quark matter, the quark and the antiquark interacting only via the QED interaction may form stable and confined colorless QED mesons non-perturbatively at about 17 MeV and 38 MeV (PRC81,064903(2010) and JHEP(2020(8), 165)). It is proposed that the possible existence of such QED mesons may be a signature of the neutral color-singlet quark matter at T = 0. The observations of the anomalous soft photons at CERN, and the anomalous bosons with masses of about 17 at ATOMKI, DUBNA, and HUS, and about 38 MeV at DUBNA, provide promising experimental indications for the existence of such QED mesons, pending further confirmations.
References
1. C.Y. Wong. Introduction to High-Energy Heavy-Ion Collisions (World Scientific Publishing, 1993).
https://doi.org/10.1142/9789814277549
2. K. Yagi, T. Hatsuda, Y. Miake. Quark-Gluon Plasma (Cambridge University Press, 2005).
3. R. Vogt. Ultrarelativistic Heavy-Ion Collisions (Elsevier Science, 2007).
4. C.Y. Wong. Anomalous soft photons in hadron production. Phys. Rev. C 81, 064903 (2010). arXiv: 1001.1691.
https://doi.org/10.1103/PhysRevC.81.064903
5. C.Y. Wong. Open string QED meson description of the X17 particle and dark matter. JHEP 2020, 165 (2020). arxiv: 2001.04864.
https://doi.org/10.1007/JHEP08(2020)165
6. V. Perepelitsa, for the DELPHI Collaboration. Anomalous soft photons in hadronic decays of Z0. Proceedings of the XXXIX International Symposium on Multiparticle Dynamics, Gomel, Belarus, September 4-9, 2009 Nonlin. Phenom. Complex Syst. 12, 343 (2009).
7. P.V. Chliapnikov et al. Observation of direct soft photon production in π−p interactions at 280 GeV/c. Phys. Lett. B 141, 276 (1984).
https://doi.org/10.1016/0370-2693(84)90216-8
8. F. Botterweck et al. (EHS-NA22 Collaboration). Direct soft photon production in K+p and π+p interactions at 250 GeV/c. Z. Phys. C 51, 541 (1991).
https://doi.org/10.1007/BF01565578
9. S. Banerjee et al. (SOPHIE/WA83 Collaboration). Observation of direct soft photon production in π−p interactions at 280 GeV/c. Phys. Lett. B 305, 182 (1993).
https://doi.org/10.1016/0370-2693(93)91126-8
10. A. Belogianni et al. (WA91 Collaboration). Confirmation of a soft photon signal in excess of QED expectations in π−p interactions at 280 GeV/c. Phys. Lett. B 408, 487 (1997).
https://doi.org/10.1016/S0370-2693(97)00762-4
11. A. Belogianni et al. (WA102 Collaboration). Further analysis of a direct soft photon excess in pi-p interactions at 280-GeV/c. Phys. Lett. B 548, 122 (2002).
https://doi.org/10.1016/S0370-2693(02)02836-8
12. A. Belogianni et al. (WA102 Collaboration). Observation of a soft photon signal in excess of QED expectations in pp interactions. Phys. Lett. B 548, 129 (2002).
https://doi.org/10.1016/S0370-2693(02)02837-X
13. J. Abdallah et al. (DELPHI Collaboration). Evidence for an excess of soft photons in hadronic decays of Z0. Eur. Phys. J. C 47, 273 (2006). arXiv: hep-ex/0604038.
14. J. Abdallah et al. (DELPHI Collaboration). Observation of the muon inner bremsstrahlung at LEP1. Eur. Phys. J. C 57, 499 (2008). arXiv: 0901.4488.
15. J. Abdallah et al. (DELPHI Collaboration). Study of the dependence of direct soft photon production on the jet characteristics in hadronic Z0 decays. Eur. Phys. J. C67, 343 (2010). arXiv: 1004.1587.
16. A.J. Krasznahorkay et al. 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.
https://doi.org/10.1103/PhysRevLett.116.042501
17. A.J. Krasznahorkay et al. New evidence supporting the existence of the hypothetical X17 particle. arXiv: 1910.10459 (2019).
18. A. Nagy, A.J. Krasznahorkay, M. Ciemala, L. Csige, Z. Gacsi, M. Hunyadi, T. Klaus, M. Kmieck, A. Maj, N. Pietralla, Z. Revay, N. Sas, C. Stegorst, J. Timar, T. Tornyi, W. Wasilewska. Searching for the double γ-decay of the X17 particle. Nuo. Cim. C 42, 124 (2019).
19. A. J. Krasznahorkay et al. New anomaly observed in 4He supports the existence of the hypothetical X17 particle. Phys. Rev. C 104, 044003 (2021). arxiv: 2104.10075.
https://doi.org/10.1103/PhysRevC.104.044003
20. A.J. Krasznahorkay. X17: Status of the experiments on 8Be and 4He. Talk presented at the Workshop on "Shedding Light on X17", September 6, 2021, Rome, Italy in Ref. [21].
21. Proceedings of the Workshop on "Shedding Light on X17", September 6-8, 2021, Centro Ricerche Enrico Fermi, Rome, Italy. Edited by M. Raggi, P. Valente, M. Nardecchia, A. Frankenthal, G. Cavoto. Published in D.S.M. Alves et al. Eur. Phys. J. C 83, 230 (2023).
22. N.J. Sas, A.J. Krasznahorkay, M. Csatl'os, J. Guly'as, B. Kert'esz, A. Krasznahorkay, J. Moln'ar, I. Rajta, J. Tim'ar, I. Vajda, M.N. Harakeh. Observation of the X17 anomaly in the 7Li(p,e+e−)8Be direct proton-capture reaction. arXiv: 2205.07744.
23. A.J. Krasznahorkay et al. New anomaly observed in 12C supports the existence and the vector character of the hypothetical X17 boson. arXiv: 2209.10795.
24. A.J. Krasznahorkay et al. Observation of the X17 anomaly in the decay of the Giant Dipole Resonance of 8Be. Talk presented at the International Symposium on Multiparticle Dynamics, at Gy¨ongy¨os, Hungary, August 20-26, 2023. arXiv: 2308.06473.
25. K. Abraamyan, Ch. Austin, M.I. Baznat, K.K. Gudima, M.A. Kozhin, S.G. Reznikov, A.S. Sorin. Observation of structures at ∼17 and ∼38 MeV/c2 in the γγ invariant mass spectra in pC, dC, and dCu collisions at plab of a few GeV/c per nucleon. Phys. Part. Nucl. 55 (4), 868 (2024). arxiv: 2311.18632.
https://doi.org/10.1134/S1063779624700412
26. K. Abraamyan, A.B. Anisimov, M.I. Baznat, K.K. Gudima, M.A. Nazarenko, S. G. Reznikov, A.S. Sorin. Observation of the E(38)-boson. arxiv:1208.3829v1 (2012).
27. K. Abraamyan, C. Austin, M. Baznat, K. Gudima, M. Kozhin, S. Reznikov, A. Sorin. Check of the structure in photon pairs spectra at the invariant mass of about 38 MeV/c2. E PJ Web of Conferences 204, 08004 (2019).
https://doi.org/10.1051/epjconf/201920408004
28. K.U. Abraamyan et al. Resonance structure in the γγ invariant mass spectrum in pC and dC interactions. Phys. Rev. C 80, 034001 (2009).
29. The-Anh Tran et al. Confirmation the 8Be anomaly with a different spectrometer. Universe 10 (4), 168 (2024). arxiv: 2401.11676.
https://doi.org/10.3390/universe10040168
30. J. Schwinger. Gauge invariance and mass II. Phys. Rev. 128, 2425 (1962).
https://doi.org/10.1103/PhysRev.128.2425
31. J. Schwinger. Gauge theory of vector particles. In Theoretical Physics, Trieste Lectures, 1962 (IAEA, 1963).
32. C.Y. Wong. The Wigner function of produced particles in string fragmentation. Phys. Rev. C 80, 054917 (2009). arXiv: 0903.3879.
https://doi.org/10.1103/PhysRevC.80.054917
33. C.Y. Wong. On the stability of the open-string QED neutron and dark matter. Euro. Phys. J. A 58, 100 (2022), [arxiv:2010.13948].
https://doi.org/10.1140/epja/s10050-022-00742-6
34. C.Y. Wong. QED mesons, the QED neutron, and the dark matter. In: Proceedings of the 19th International Conference on Strangeness in Quark Matter EPJ Web of Conferences 259, 13016 (2022). arXiv: 2108.00959.
https://doi.org/10.1051/epjconf/202225913016
35. C.Y. Wong. On the question of quark confinement in the QED interaction. Front. Phys. 18, 64401 (2023). arxiv: 2208.09920.
https://doi.org/10.1007/s11467-023-1288-0
36. C.Y. Wong, A. Koshelkin. Dynamics of quarks and gauge fields in the lowest-energy states in QCD and QED. Euro. Phys. J. A 59, 285 (2023). arXiv: 2111.14933.
https://doi.org/10.1140/epja/s10050-023-01180-8
37. C.Y. Wong. Talk Presented at 52th International Symposium on Multiparticle Dynamics, August 21-25, 2023, Gy¨ongy¨os, Hungary Published in Universe 10, 173 (2024). arxiv: 2401.04142.
38. B. Andersson, G. Gustafson, T. Sj¨ostrand. A general model for jet fragmentation. Zeit. f¨ur Phys. C 20, 317 (1983).
https://doi.org/10.1007/BF01407824
39. L. Cosmai, P. Cea, F. Cuteri, A. Papa. Flux tubes in QCD with (2 + 1) HISQ fermions. Pos, 4th annual International Symposium on Lattice Field Theory 24-30 July 2016 University of Southampton, UK (2017). arxiv: 1701.03371.
https://doi.org/10.22323/1.256.0344
40. M. Gell-Mann, R.J. Oakes, B. Renner. Behavior of current divergences under SU(3) Г- SU(3). Phys. Rev. 175, 2195 (1968).
https://doi.org/10.1103/PhysRev.175.2195
41. M.E. Peskin, D.V. Schroeder. An Introduction to Quantum Field Theory (Addison-Wesley Publishing Company, 1995).
42. M.E. Rose. Internal Pair Formation. Phys. Rev. 78, 184 (1950).
https://doi.org/10.1103/PhysRev.78.184
43. K. McDonald. Physics Examples and other Pedagogic Diversions, Neutral-Pion Decay. Joseph Henry Laboratories, Princeton University, Princeton, NJ 08544 (September 15, 1976; updated June 4, 2019). http://kirkmcd.princeton.edu/examples/piondecay.pdf.
44. D. Barducci, C. Toni. An updated view on the ATOMKI nuclear anomalies. arxiv: 2212.06453.
45. J. Feng et al. Protophobic fifth force interpretation of the observed anomaly in 8Be nuclear transitions. Phys. Rev. Lett. 117, 071803 (2016).
https://doi.org/10.1103/PhysRevLett.117.071803
46. J. Feng et al. Particle physics models for the 17 MeV anomaly in beryllium nuclear decays. Phys. Rev. D 95, 035017 (2017).
https://doi.org/10.1103/PhysRevD.95.035017
47. J.L. Feng, J.M.P. Tait, B. Verhaaren. Dynamical evidence for a fifth force explanation of the ATOMKI nuclear anomalies. Phys. Rev. D 102, 036016 (2020). arxiv: 2006.01151.
https://doi.org/10.1103/PhysRevD.102.036016
48. S. Varr'o. Proposal for an electromagnetic mass formula for the X17 particle. Talk Presented at 52th International Symposium on Multiparticle Dynamics, August 21-25, 2023, Gy¨ongy¨os, Hungary. Universe 10, 86 (2024).
https://doi.org/10.3390/universe10020086
49. Xilin Zhang, G. A Miller. Can nuclear physics explain the anomaly observed in the internal pair production in the Beryllium-8 nucleus? Phys. Lett. B 773, 159 (2017). arXiv: 1703.04588.
https://doi.org/10.1016/j.physletb.2017.08.013
50. A.C. Hayes, J. Friar, G.M. Hale, G.T. Garvey. Angular correlations in the e+e− decay of excited states in 8Be. Phys. Rev. C 105, 055502 (2022).
https://doi.org/10.1103/PhysRevC.105.055502
51. F. Bossi et al. Search for a new 17 MeV resonance via e+e− annihilation with the PADME Experiment. arXiv: 2505.24797.
52. K. Afanaciev et al., (MEG II). Search for the X17 particle in 7Li(p,e+e−) 8Be processes with the MEG II detector. arXiv: 2411.07994 (2024).
53. E. van Beveren, G. Rupp. First indications of the existence of a 38 MeV light scalar boson. arxiv: 1102.1863 (2011).
54. L.D. Landau. The moment of a 2-photon system. Dokl. Akcad. Nauk. Ser. Fiz. 60, 207 (1948).
55. C.N. Yang. Selection Rules for the Dematerialization of a Particle into Two Photons. Phys. Rev. 77, 242 (1950).
https://doi.org/10.1103/PhysRev.77.242
56. A. Bauswein, N-U.F. Bastian, D. Blaschke, K. Chatziioannou, J.A. Clark, T. Fischer, M. Oertel. Identifying a firstorder phase transition in neutron-star mergers through gravitational waves. Phys. Rev. Lett. 122, 061102 (2019).
https://doi.org/10.1103/PhysRevLett.122.061102
57. E. Annala, T. Gorda, A. Kurkela, J. Naettilae, A. Vuorinen. Evidence for quark-matter cores in massive neutron stars. Nat. Phys. 16, 907 (2020).
https://doi.org/10.1038/s41567-020-0914-9
58. R. Bailhache et al. Anomalous soft photons: status and perspectives. Phys. Rept. 1097, 1 (2024). arXiv: 2406.17959.
https://doi.org/10.1016/j.physrep.2024.10.002
59. D. Yakovlev, P. Haensel, G. Baym, C. Tethick. Lev Landau and the conception of neutron stars. arXiv: 1210.0682.
60. L.D. Landau. ¨Uber die Theorie der Sterne. Phys. Z. Sowjetunion 1, 285 (1932).
61. Ya.B. Zeldovich, I.D. Novikov. Relativistic Astrophysics Vol. I (Unversity of Chicago Press, 1971).
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