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| Hauptverfasser: | , , , , , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| Online-Zugang: | https://arxiv.org/abs/2502.00460 |
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| _version_ | 1866909472002146304 |
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| author | Bhattacharya, Tanmoy Bhattacharya, Shohini Cirigliano, Vincenzo Gupta, Rajan Mereghetti, Emanuele Park, Sungwoo Yoo, Jun-Sik Yoon, Boram |
| author_facet | Bhattacharya, Tanmoy Bhattacharya, Shohini Cirigliano, Vincenzo Gupta, Rajan Mereghetti, Emanuele Park, Sungwoo Yoo, Jun-Sik Yoon, Boram |
| contents | We present preliminary results on the susceptibilities involving the CP-violating (CPV) Weinberg three-gluon operator and the topological $Θ$ term using the gradient flow scheme, and study their continuum and chiral extrapolations. These are used to provide an estimate of the $Θ$ induced by the Weinberg operator in theories with the Peccei-Quinn (PQ) mechanism. Combined with the calculations of the matrix elements (MEs) of quark-bilinears between nucleon states, such calculations will enable estimates of the electric dipole moments (EDMs) and CPV pion-nucleon couplings due to the Weinberg operator, thereby providing robust constraints on beyond the standard model (BSM) physics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_00460 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Gradient flow of the Weinberg operator Bhattacharya, Tanmoy Bhattacharya, Shohini Cirigliano, Vincenzo Gupta, Rajan Mereghetti, Emanuele Park, Sungwoo Yoo, Jun-Sik Yoon, Boram High Energy Physics - Lattice High Energy Physics - Phenomenology We present preliminary results on the susceptibilities involving the CP-violating (CPV) Weinberg three-gluon operator and the topological $Θ$ term using the gradient flow scheme, and study their continuum and chiral extrapolations. These are used to provide an estimate of the $Θ$ induced by the Weinberg operator in theories with the Peccei-Quinn (PQ) mechanism. Combined with the calculations of the matrix elements (MEs) of quark-bilinears between nucleon states, such calculations will enable estimates of the electric dipole moments (EDMs) and CPV pion-nucleon couplings due to the Weinberg operator, thereby providing robust constraints on beyond the standard model (BSM) physics. |
| title | Gradient flow of the Weinberg operator |
| topic | High Energy Physics - Lattice High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2502.00460 |