Symmergent Gravity, Seesawic New Physics, and Their Experimental Signatures
The standard model of elementary particles (SM) suffers from various problems, such as power-law ultraviolet (UV) sensitivity, exclusion of general relativity (GR), and absence of a dark matter candidate. The LHC experiments, according to which the TeV domain appears to be empty of new particles, st...
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2019-01-01
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| Series: | Advances in High Energy Physics |
| Online Access: | http://dx.doi.org/10.1155/2019/4652048 |
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| author | Durmuş Demir |
| author_facet | Durmuş Demir |
| author_sort | Durmuş Demir |
| collection | DOAJ |
| description | The standard model of elementary particles (SM) suffers from various problems, such as power-law ultraviolet (UV) sensitivity, exclusion of general relativity (GR), and absence of a dark matter candidate. The LHC experiments, according to which the TeV domain appears to be empty of new particles, started sidelining TeV-scale SUSY and other known cures of the UV sensitivity. In search for a remedy, in this work, it is revealed that affine curvature can emerge in a way restoring gauge symmetries explicitly broken by the UV cutoff. This emergent curvature cures the UV sensitivity and incorporates GR as symmetry-restoring emergent gravity (symmergent gravity, in brief) if a new physics sector (NP) exists to generate the Planck scale and if SM+NP is Fermi-Bose balanced. This setup, carrying fingerprints of trans-Planckian SUSY, predicts that gravity is Einstein (no higher-curvature terms), cosmic/gamma rays can originate from heavy NP scalars, and the UV cutoff might take right value to suppress the cosmological constant (alleviating fine-tuning with SUSY). The NP does not have to couple to the SM. In fact, NP-SM coupling can take any value from zero to ΛSM2/ΛNP2 if the SM is not to jump from ΛSM≈500 GeV to the NP scale ΛNP. The zero coupling, certifying an undetectable NP, agrees with all the collider and dark matter bounds at present. The seesawic bound ΛSM2/ΛNP2, directly verifiable at colliders, implies that (i) dark matter must have a mass ≲ΛSM, (ii) Higgs-curvature coupling must be ≈1.3%, (iii) the SM RGEs must remain nearly as in the SM, and (iv) right-handed neutrinos must have a mass ≲1000 TeV. These signatures serve as a concise testbed for symmergence. |
| format | Article |
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| institution | Kabale University |
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| language | English |
| publishDate | 2019-01-01 |
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| series | Advances in High Energy Physics |
| spelling | doaj-art-36adb333a8434ef5bb8697a4925616232025-02-03T07:23:51ZengWileyAdvances in High Energy Physics1687-73571687-73652019-01-01201910.1155/2019/46520484652048Symmergent Gravity, Seesawic New Physics, and Their Experimental SignaturesDurmuş Demir0Department of Physics, İzmir Institute of Technology, TR35430 İzmir, TurkeyThe standard model of elementary particles (SM) suffers from various problems, such as power-law ultraviolet (UV) sensitivity, exclusion of general relativity (GR), and absence of a dark matter candidate. The LHC experiments, according to which the TeV domain appears to be empty of new particles, started sidelining TeV-scale SUSY and other known cures of the UV sensitivity. In search for a remedy, in this work, it is revealed that affine curvature can emerge in a way restoring gauge symmetries explicitly broken by the UV cutoff. This emergent curvature cures the UV sensitivity and incorporates GR as symmetry-restoring emergent gravity (symmergent gravity, in brief) if a new physics sector (NP) exists to generate the Planck scale and if SM+NP is Fermi-Bose balanced. This setup, carrying fingerprints of trans-Planckian SUSY, predicts that gravity is Einstein (no higher-curvature terms), cosmic/gamma rays can originate from heavy NP scalars, and the UV cutoff might take right value to suppress the cosmological constant (alleviating fine-tuning with SUSY). The NP does not have to couple to the SM. In fact, NP-SM coupling can take any value from zero to ΛSM2/ΛNP2 if the SM is not to jump from ΛSM≈500 GeV to the NP scale ΛNP. The zero coupling, certifying an undetectable NP, agrees with all the collider and dark matter bounds at present. The seesawic bound ΛSM2/ΛNP2, directly verifiable at colliders, implies that (i) dark matter must have a mass ≲ΛSM, (ii) Higgs-curvature coupling must be ≈1.3%, (iii) the SM RGEs must remain nearly as in the SM, and (iv) right-handed neutrinos must have a mass ≲1000 TeV. These signatures serve as a concise testbed for symmergence.http://dx.doi.org/10.1155/2019/4652048 |
| spellingShingle | Durmuş Demir Symmergent Gravity, Seesawic New Physics, and Their Experimental Signatures Advances in High Energy Physics |
| title | Symmergent Gravity, Seesawic New Physics, and Their Experimental Signatures |
| title_full | Symmergent Gravity, Seesawic New Physics, and Their Experimental Signatures |
| title_fullStr | Symmergent Gravity, Seesawic New Physics, and Their Experimental Signatures |
| title_full_unstemmed | Symmergent Gravity, Seesawic New Physics, and Their Experimental Signatures |
| title_short | Symmergent Gravity, Seesawic New Physics, and Their Experimental Signatures |
| title_sort | symmergent gravity seesawic new physics and their experimental signatures |
| url | http://dx.doi.org/10.1155/2019/4652048 |
| work_keys_str_mv | AT durmusdemir symmergentgravityseesawicnewphysicsandtheirexperimentalsignatures |