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20th LOMONOSOV CONFERENCE ON ELEMENTARY PARTICLE PHYSICS
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Low Energy Antimatter
Marco Giammarchi E-mail: marco.giammarchi@mi. infn. it
Istituto Nazionale di Fisica Nucleare Sezione di Milano. Milano 20133, Italy Received February 15, 2022
I will review the motivation and the general features of experiments devoted to testing fundamental laws with antimatter at low energies.
Keywords: antimatter.
English version: Moscow University Physics Bulletin. 2022. 77, No. 2. Pp. 201-205.
Centrality Determination in Heavy-ion Collisions with MPD detector at NICA
Dim Idrisov (for the MPD Collaboration) E-mail: idrisov.dim@mail.ru National Research Nuclear University MEPhl. Moscow, 115409, Russia Received January 16, 2022
Centrality is a key parameter for defining the collision system size in relativistic heavy-ion collisions. A procedure to determine the centrality of collisions with the Multi-Purpose Detector (MPD) at NICA is presented. Relation between impact parameter of the collision and centrality classes is extracted using multiplicity of produced charged particles.
Keywords: centrality, MC-Glauber, Bayes theorem, relativistic heavy-ion collisions.
English version: Moscow University Physics Bulletin. 2022. 77, No. 2. Pp. 206-207.
Measurement of the Muon Magnetic Anomaly aM in the Muon g — 2 Experiment at
Fermilab
Marco Incagli (Fermilab E989 Muon g-2 Collaboration) E-mail: marco.incagli@pi. infn. it
Istituto Nazionale di Fisica Nucleare, INFN-Pisa. Pisa, Italy Received April 1, 2022
The Fermilab Muon g — 2 experiment measures the muon anomalous magnetic moment with high precision. Together with recent improvements on the theory front, the first results of the experiment confirm the long-standing discrepancy between the experimental measurements and the Standard Model predictions. The observed value of aM(FNAL) = 116 592 040(54) x 10-11 (0.46 ppm), combined with the previous experimental measurement, results in a discrepancy of (251 ± 59) x 10-11 with the theoretical prediction, corresponding to 4.2 a. This note presents the first results, the current status and the future prospects of the Muon g — 2 experiment at Fermilab.
Keywords: collider physics, muon g — 2, magnetic anomaly.
English version: Moscow University Physics Bulletin. 2022. 77, No. 2. Pp. 208-215.
Exotic Physics Signatures at CMS
Amandeep Kaur (for CMS Collaboration) E-mail: amandeep.kaur@cern.ch
Department of Physics, Panjab University. Chandigarh, India Received January 17, 2022
The highlights of the latest results for the search for exotic physics signatures at the Compact Muon Solenoid (CMS) experiment are presented. These include signatures for heavy mass resonances, long-lived particles and leptoquarks predicted by theories beyond the standard model (BSM).
Keywords: collider physics, leptoquarks, heavy mass resonances.
English version: Moscow University Physics Bulletin. 2022. 77, No. 2. Pp. 216-219.
