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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:29 |
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Conference: Bucharest University Faculty of Physics 2024 Meeting
Section: Nuclear and Elementary Particles Physics
Title:
Nuclear effects in proton decay
Authors:
Denis BARBU (1), Mihaela PARVU (1), Ionel LAZANU (1)
Affiliation:
(1) Faculty of Physics, University of Bucharest, POBox 11, Magurele, Romania
E-mail
denis.barbu@g.unibuc.ro
Keywords:
proton decay, detection, nuclear effects
Abstract:
The proton decay detection would be one of the best ways to test some theories that are Beyond the Standard Model. For this reason, there is a significant number of experiments that are searching for such a decay using different detection techniques. The principal techniques are water Cherenkov and liquid noble gas TPC detectors, however geochemical and radiochemical methods, (liquid) scintillators, or iron calorimetry are also considered. Because in the most cases the proton is not a free particle, in this work we studied some nuclear effects that must be considered in proton decay, i.e., Fermi motion of the nucleons and final state interactions. The two decay channels that were studied are: 𝑝 → 𝐾+ 𝜈̅ and 𝑝 → 𝜋+ 𝜈̅. The analyze was done for three different mediums that are used in these experiments, H2O, LAr and LXe. In this sense, we have calculated the energy distributions for both kaon and pion using the Fermi Model of the nucleus. In order to describe the FSI, we have also provided data for cross sections and mean free paths of kaon and pion in the three mediums, by applying different parametrizations on the poor existing experimental data of these mesons. The results for cross sections and mean free paths were calculated for two different cases, i.e., interactions inside the residual nucleus and with the nuclei of the medium. Because in such interactions the kinematics can change drastically, with the possibility of vanishing in the case of pion, the probabilities for the particles to not interact with the nucleons of the residual nucleus or with the nuclei of the medium were obtained.
Acknowledgement:
This work is supported by the contract no. 04/2022, Programme 5, Module 5.2 CERN-RO.
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