Ultra-Granular Calorimeter Performances for the Heavy Flavor Physics Program at the Z Peak
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arXiv
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| Format: | Preprint |
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2026
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| _version_ | 1866910248228356096 |
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| author | Brient, J. -C |
| author_facet | Brient, J. -C |
| contents | Various decays of the B mesons are here used to establish the performances of an ultra-granular electromagnetic calorimeter for heavy flavour physics at an electron positron accelerator running at the Z peak. The silicon-tungsten electromagnetic calorimeter of the ILD concept is used for this purpose, enhanced by a timing capability. When possible, a $π$ 0 mass fit of $γ$$γ$ system is performed to improve the $π$ 0 energy resolution. It is also shown that in the presence in the final state of a photon without a $π$ 0 , the identification of genuine photon(s) versus fake photon(s) coming from K L 's, neutron's, debris of hadronic shower or other high energy $π$ 0 , is essential. It allows for a good precision and a good signal over background ratio for this kind of physics. The possible impact for the tau physics is discussed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_23667 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Ultra-Granular Calorimeter Performances for the Heavy Flavor Physics Program at the Z Peak Brient, J. -C Analysis of PDEs Various decays of the B mesons are here used to establish the performances of an ultra-granular electromagnetic calorimeter for heavy flavour physics at an electron positron accelerator running at the Z peak. The silicon-tungsten electromagnetic calorimeter of the ILD concept is used for this purpose, enhanced by a timing capability. When possible, a $π$ 0 mass fit of $γ$$γ$ system is performed to improve the $π$ 0 energy resolution. It is also shown that in the presence in the final state of a photon without a $π$ 0 , the identification of genuine photon(s) versus fake photon(s) coming from K L 's, neutron's, debris of hadronic shower or other high energy $π$ 0 , is essential. It allows for a good precision and a good signal over background ratio for this kind of physics. The possible impact for the tau physics is discussed. |
| title | Ultra-Granular Calorimeter Performances for the Heavy Flavor Physics Program at the Z Peak |
| topic | Analysis of PDEs |
| url | https://arxiv.org/abs/2605.23667 |