Light-by-light scattering in ultraperipheral collisions of heavy ions with future FoCal and ALICE 3 detectors
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arXiv
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866929308220522496 |
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| author | Szczurek, Antoni |
| author_facet | Szczurek, Antoni |
| contents | I present possible future studies of light-by-light scattering using FoCal@ALICE and ALICE 3 detectors. Different mechanisms are discussed. The PbPb$\to$PbPb$γγ$ cross section is calculated within equivalent photon approximation in the impact parameter space. Several differential distributions are presented and discussed.
We predict cross section in the (mb-b) range for typical ALICE 3 cuts, a few orders of magnitude larger than for the current ATLAS or CMS experiments. We also consider the two-$π^0$ background which can, in principle, be eliminated at the new kinematical range for the ALICE 3 measurements by imposing dedicated cuts on diphoton transverse momentum and$\slash$or so-called vector asymmetry. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_06518 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Light-by-light scattering in ultraperipheral collisions of heavy ions with future FoCal and ALICE 3 detectors Szczurek, Antoni High Energy Physics - Phenomenology Nuclear Theory I present possible future studies of light-by-light scattering using FoCal@ALICE and ALICE 3 detectors. Different mechanisms are discussed. The PbPb$\to$PbPb$γγ$ cross section is calculated within equivalent photon approximation in the impact parameter space. Several differential distributions are presented and discussed. We predict cross section in the (mb-b) range for typical ALICE 3 cuts, a few orders of magnitude larger than for the current ATLAS or CMS experiments. We also consider the two-$π^0$ background which can, in principle, be eliminated at the new kinematical range for the ALICE 3 measurements by imposing dedicated cuts on diphoton transverse momentum and$\slash$or so-called vector asymmetry. |
| title | Light-by-light scattering in ultraperipheral collisions of heavy ions with future FoCal and ALICE 3 detectors |
| topic | High Energy Physics - Phenomenology Nuclear Theory |
| url | https://arxiv.org/abs/2404.06518 |