Uncertainties from metrology in the integrated luminosity measurement with the updated design of a detector at CEPC
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866910510791786496 |
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| author | Smiljanic, Ivan Bozovic, Ivanka Kacarevic, Goran |
| author_facet | Smiljanic, Ivan Bozovic, Ivanka Kacarevic, Goran |
| contents | In order to measure integrated luminosity with a required precision of $10^{-4}$ at the $Z^0$ pole, proposed CEPC $e^{+}e^{-}$ collider requires a luminometer, a specially designed calorimeter placed in the very forward region to identify Bhabha scattering at low polar angles. Usually, such a device is placed at the outgoing beams, to keep the spatial symmetries of the head-on collisions at accelerators with a non-zero crossing angle. At CEPC it is currently proposed to place the luminometer on the z-axis. We review a feasibility of a measurement of the integrated luminosity at the $Z^{0}$ pole with the required precision, concerning the luminometer centered around the z-axis and the post-CDR beam properties. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2404_18605 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Uncertainties from metrology in the integrated luminosity measurement with the updated design of a detector at CEPC Smiljanic, Ivan Bozovic, Ivanka Kacarevic, Goran High Energy Physics - Experiment Instrumentation and Detectors In order to measure integrated luminosity with a required precision of $10^{-4}$ at the $Z^0$ pole, proposed CEPC $e^{+}e^{-}$ collider requires a luminometer, a specially designed calorimeter placed in the very forward region to identify Bhabha scattering at low polar angles. Usually, such a device is placed at the outgoing beams, to keep the spatial symmetries of the head-on collisions at accelerators with a non-zero crossing angle. At CEPC it is currently proposed to place the luminometer on the z-axis. We review a feasibility of a measurement of the integrated luminosity at the $Z^{0}$ pole with the required precision, concerning the luminometer centered around the z-axis and the post-CDR beam properties. |
| title | Uncertainties from metrology in the integrated luminosity measurement with the updated design of a detector at CEPC |
| topic | High Energy Physics - Experiment Instrumentation and Detectors |
| url | https://arxiv.org/abs/2404.18605 |