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PreprintCC BY 4.0arXiv

Evidence for Kaluza-Klein excitations of the graviton, gluon and quark at LHC

  • Alain Le Yaouanc
  • François Richard
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Abstract

Following our paper showing evidence for a sequence of Kaluza-Klein gravitons, we interpret the massive 4 jet excesses observed by CMS in RUN2 and RUN3 data. They could come from the decay of two heavy KK gluons gkk(3.6TeV) and gkk(8.6TeV) into pairs of KK quarks qkk(1TeV) and qkk(2.1TeV). Present limits on gkk into top pairs seem to exclude gkk(3.6TeV) but these limits assume a dominant decay into top pairs, which can be questioned as was the case in our study of KK graviton decays. The cross section predicted for gkk(8.6) requires a BR into a pair of qkk(2.1TeV) or order 10% which is not unlikely. Prospect for reaching a 6 s.d. level local evidence with RUN3 data are promising for 3 channels. KK excitations of the Z boson are also discussed and appear also promising.

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Cite

BibTeXRIS
BibTeX
@misc{yaouanc2026evidence,
  title = {{Evidence for Kaluza-Klein excitations of the graviton, gluon and quark at LHC}},
  author = {Alain Le Yaouanc and François Richard},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.31458},
  eprint = {2610.31458},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.31458},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Evidence for Kaluza-Klein excitations of the graviton, gluon and quark at LHC
AU  - Alain Le Yaouanc
AU  - François Richard
PY  - 2026
DA  - 2026/10/27
PB  - arXiv
DO  - 10.48550/arxiv.2610.31458
UR  - https://arxiv.org/abs/2610.31458
AB  - Following our paper showing evidence for a sequence of Kaluza-Klein gravitons, we interpret the massive 4 jet excesses observed by CMS in RUN2 and RUN3 data. They could come from the decay of two heavy KK gluons gkk(3.6TeV) and gkk(8.6TeV) into pairs of KK quarks qkk(1TeV) and qkk(2.1TeV). Present limits on gkk into top pairs seem to exclude gkk(3.6TeV) but these limits assume a dominant decay into top pairs, which can be questioned as was the case in our study of KK graviton decays. The cross section predicted for gkk(8.6) requires a BR into a pair of qkk(2.1TeV) or order 10% which is not unlikely. Prospect for reaching a 6 s.d. level local evidence with RUN3 data are promising for 3 channels. KK excitations of the Z boson are also discussed and appear also promising.
ER  -