Experimental signatures of Kalb-Ramond-like particles
Abstract We analyse phenomenological signatures of Kalb-Ramond-like particles, described by an antisymmetric rank-2 tensor, when coupled to fermionic matter. The latter is modelled by a tensor current coupled directly to the Kalb-Ramond field or by a pseudovector current coupled to the rank-1 dual o...
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| Language: | English |
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SpringerOpen
2025-05-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP05(2025)093 |
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| author | P. C. Malta J. P. S. Melo C. A. D. Zarro |
| author_facet | P. C. Malta J. P. S. Melo C. A. D. Zarro |
| author_sort | P. C. Malta |
| collection | DOAJ |
| description | Abstract We analyse phenomenological signatures of Kalb-Ramond-like particles, described by an antisymmetric rank-2 tensor, when coupled to fermionic matter. The latter is modelled by a tensor current coupled directly to the Kalb-Ramond field or by a pseudovector current coupled to the rank-1 dual of the field-strength tensor. We obtain limits on the coupling constants to fermions and mass of the Kalb-Ramond-like particles by investigating their impact on the hyperfine splittings of hydrogen, the tree-level unitarity of the S matrix for e − + e + → ℓ − + ℓ + scattering with ℓ ≠ e and the differential cross section for Bhabha scattering. Assuming that the couplings to fermions are independent of the fermion species, the strongest 95%-CL bounds we find are from LEP data at s $$ \sqrt{s} $$ = 136.23 GeV, namely g PV/Λ ≲ 6.3 × 10−13 eV−1 and g T ≲ 1.3 × 10−12 (m/eV), both for m ≪ s $$ \sqrt{s} $$ (here Λ is a characteristic energy scale). These limits can be improved in upcoming lepton colliders due to enhanced precision, as well as higher energies. |
| format | Article |
| id | doaj-art-d5218ea635e34eb29855d623cbdfd8c6 |
| institution | OA Journals |
| issn | 1029-8479 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-d5218ea635e34eb29855d623cbdfd8c62025-08-20T02:05:46ZengSpringerOpenJournal of High Energy Physics1029-84792025-05-012025513710.1007/JHEP05(2025)093Experimental signatures of Kalb-Ramond-like particlesP. C. Malta0J. P. S. Melo1C. A. D. Zarro2Independent ResearcherDepartamento de Astrofísica, Cosmologia e Interações Fundamentais (COSMO), Centro Brasileiro de Pesquisas Físicas (CBPF)Instituto de Física, Universidade Federal do Rio de JaneiroAbstract We analyse phenomenological signatures of Kalb-Ramond-like particles, described by an antisymmetric rank-2 tensor, when coupled to fermionic matter. The latter is modelled by a tensor current coupled directly to the Kalb-Ramond field or by a pseudovector current coupled to the rank-1 dual of the field-strength tensor. We obtain limits on the coupling constants to fermions and mass of the Kalb-Ramond-like particles by investigating their impact on the hyperfine splittings of hydrogen, the tree-level unitarity of the S matrix for e − + e + → ℓ − + ℓ + scattering with ℓ ≠ e and the differential cross section for Bhabha scattering. Assuming that the couplings to fermions are independent of the fermion species, the strongest 95%-CL bounds we find are from LEP data at s $$ \sqrt{s} $$ = 136.23 GeV, namely g PV/Λ ≲ 6.3 × 10−13 eV−1 and g T ≲ 1.3 × 10−12 (m/eV), both for m ≪ s $$ \sqrt{s} $$ (here Λ is a characteristic energy scale). These limits can be improved in upcoming lepton colliders due to enhanced precision, as well as higher energies.https://doi.org/10.1007/JHEP05(2025)093New Light ParticlesSpecific BSM Phenomenology |
| spellingShingle | P. C. Malta J. P. S. Melo C. A. D. Zarro Experimental signatures of Kalb-Ramond-like particles Journal of High Energy Physics New Light Particles Specific BSM Phenomenology |
| title | Experimental signatures of Kalb-Ramond-like particles |
| title_full | Experimental signatures of Kalb-Ramond-like particles |
| title_fullStr | Experimental signatures of Kalb-Ramond-like particles |
| title_full_unstemmed | Experimental signatures of Kalb-Ramond-like particles |
| title_short | Experimental signatures of Kalb-Ramond-like particles |
| title_sort | experimental signatures of kalb ramond like particles |
| topic | New Light Particles Specific BSM Phenomenology |
| url | https://doi.org/10.1007/JHEP05(2025)093 |
| work_keys_str_mv | AT pcmalta experimentalsignaturesofkalbramondlikeparticles AT jpsmelo experimentalsignaturesofkalbramondlikeparticles AT cadzarro experimentalsignaturesofkalbramondlikeparticles |