Měření produkce antiprotonů na experimentu AMBER

• Thesis title in Czech: Měření produkce antiprotonů na experimentu AMBER
• Thesis title in English: Measurement of antiproton production at AMBER
• Key words: CERN|AMBER|antiproton|fyzika vysokých energií|RICH
• English key words: CERN|AMBER|antiproton|high-energy physics|RICH
• Academic year of topic announcement: 2023/2024
• Thesis type: diploma thesis
• Department: Department of Low Temperature Physics (32-KFNT)
• Supervisor: Mgr. Jan Matoušek, Ph.D.
• Author: hidden - assigned and confirmed by the Study Dept.
• Date of registration: 11.12.2023
• Date of assignment: 12.12.2023
• Confirmed by Study dept. on: 12.12.2023

Guidelines

- Get familiar with the AMBER experiment and its ring-imaging Cherenkov (RICH) detector. Learn the data processing routines used at AMBER at CERN.
- Participate in establishing the processing and quality and stability checks for the data collected with high-energy proton beam and helium or hydrogen target.
- Study the efficiency and purity of the RICH detector for hadron identification; measure the incoming beam flux.
- Measure the differential cross section of antiproton production.

References

[1] B. Adams et al., Letter of Intent: A New QCD facility at the M2 beam line of the CERN SPS (COMPASS++/AMBER), CERN-SPSC-2019-003 (SPSC-I-250), https://arxiv.org/abs/1808.00848
[2] B. Adams et al., COMPASS++/AMBER: Proposal for Measurements at the M2 beam line of the CERN SPS Phase-1: 2022-2024, CERN-SPSC-2019-022 ; SPSC-P-360, http://cds.cern.ch/record/2676885
[3] C. Quintans for the AMBER Collaboration, The New AMBER Experiment at the CERN SPS, Few Body Syst. 63 (2022) 4, 72, http://cds.cern.ch/record/2835870
[4] D. Giordano for the AMBER Collaboration, Measurement of antiproton production cross sections for dark matter search at the AMBER Experiment at CERN, PoS ICHEP2022 (2022) 1197, https://pos.sissa.it/414/1197
[5] M. Aguilar et al. (AMS-02 Collaboration), The Alpha Magnetic Spectrometer (AMS) on the international space station: Part II — Results from the first seven years, Physics Reports, Volume 894, 2021, Pages 1-116, ISSN 0370-1573
[6] R. Aaij et al. (LHCb Collaboration), Measurement of antiproton production in pHe collisions at √s = 110 GeV, Phys. Rev. Lett. 121, 222001
[7] M. Korsmeier, F. Donato and M. Di Mauro, Production cross sections of cosmic anti-protons in the light of new data from the na61 and lhcb experiments, Phys. Rev. D97 (2018) 103019

Preliminary scope of work

Spektrometr AMS umístěný na oběžné dráze Země měří mimo jiné tok antiprotonů [5]. Jejich dominantním zdrojem by měly být srážky vysokoenergetických protonů s mezihvězdným materiálem, převážně vodíkem a heliem. Kolaborace AMBER [1-4] nasbírala data pro srážky protonů o energiích 100-190 GeV s kapalným heliovým terčem, experiment s vodíkovým terčem je ve fázi schvalování. Analýza těchto dat (společně s daty z experimentu LHCb v TeV oblasti) významně zpřesní znalost účinného průřezu tohoto přirozeného mechanismu produkce. To je nezbytné pro pochopení, jestli naměřený tok ponechává prostor pro exotické zdroje antiprotonů jako například anihilace temné hmoty [4,7].

Preliminary scope of work in English

Measurement of the antiproton production cross section in proton-helium or proton-proton interactions
Measurements of the AMS spectrometer include the cosmic antiproton flux [5]. They are expected to be produced dominantly in collisions of high energy proton cosmic rays with the interstellar medium, mostly hydrogen and helium, at rest. The AMBER collaboration [1-4] has collected data on 100-190 GeV protons scattering off a liquid helium target, an experiment with hydrogen target is being proposed as well. Analysis of these data (together with complementary data from LHCb experiment in TeV domain) will significantly improve the knowledge of the cross section of this conventional antiproton production. That is necessary to assess if the measured flux leaves space for exotic antiproton sources such as dark matter annihilation [4,7].