LXX International conference "NUCLEUS – 2020. Nuclear physics and elementary particle physics. Nuclear physics technologies"

Session

Poster session 4 (part 1)

13 Oct 2020, 18:35

Online

122. Central diffraction and ultra-peripheral collisions in ALICE in Run 3 and 4

Nazar Burmasov (NRC Kurchatov Institute PNPI (RU))

13/10/2020, 18:35

Section 4. Relativistic nuclear physics, elementary particle physics and high-energy physics.

Poster report

The ALICE experiment at the LHC is undergoing a major upgrade during Long Shutdown 2 (2019-2020). In particular, the Time Projection Chamber (TPC) is being equipped with new GEM-based readout chambers and the readout electronics of several detectors is being replaced with faster and more flexible technology. This will allow ALICE to read out most of the detectors in the continuous mode and...

385. Evaluation of the $\pi^+n$ and $\pi^0p$ electroproduction cross section from the data measured with the CLAS detector

Maksim Davydov, Alexandr Bulgakov, Almaz Nasrtdinov

13/10/2020, 18:35

Section 4. Relativistic nuclear physics, elementary particle physics and high-energy physics.

Poster report

The measurements of exclusive $\pi^+n$ and $\pi^0p$ electroproduction with the CLAS detector in Hall B at Jlab provided the dominant part of the world data on observables of these channels [1] stored in the CLAS Physics Data Base [2]. The data on exclusive $N\pi$ and $\pi^+\pi^-p$ electroproduction are the major source of the information on nucleon resonance ($N^*$) electroexcitation...

435. Forward-backward multiplicity correlations with strongly intensive observables in pp collisions simulated in PYTHIA

Andrey Erokhin (St Petersburg State University (RU))

13/10/2020, 18:35

Section 4. Relativistic nuclear physics, elementary particle physics and high-energy physics.

Poster report

Strongly intensive observables can be used to measure forward-backward (FB) correlations between charged particles in two separate pseudorapidity intervals. We will present calculations of observables in pp collisions simulated in PYTHIA at the LHC energies, and examine the azimuthal dependence of such correlations.
Within the model of independent statistically identical particle sources,...

371. High-precision limits on W-W′ and Z-Z′ mixing from diboson production using the full LHC Run 2 ATLAS data set

Dr Inna Serenkova

13/10/2020, 18:35

Section 4. Relativistic nuclear physics, elementary particle physics and high-energy physics.

Poster report

The full ATLAS Run 2 data set with time-integrated luminosity of 139 fb$^{-1}$ in
the diboson channels in hadronic final states is used to probe a simple model
with an extended gauge sector (EGM), proposed by Altarelli et al., and often taken
as a convenient benchmark by experimentalists. This model predicts new
charged $W'$ and neutral $Z'$ vector bosons with modified
trilinear Standard...

330. Performance of the MPD detector for the study of strongly-intensive multiplicity and transverse momentum fluctuations in heavy-ion collisions

Dr Evgeny Andronov (St Petersburg State University (RU))

13/10/2020, 18:35

Section 4. Relativistic nuclear physics, elementary particle physics and high-energy physics.

Poster report

The Multi-Purpose Detector, to be operating at NICA, aims to study the phase diagram of strongly interacting matter at high baryonic densities. One of the sensitive tools to probe the critical behaviour is the analysis of event-by-event fluctuations. Strongly intensive observables are considered to be especially sensitive to the phase transitions as they suppress trivial volume fluctuations....

430. Proton stopping in a hydrodynamic model of pA collisions at SPS and NICA energies

Vera Ermakova

13/10/2020, 18:35

Section 4. Relativistic nuclear physics, elementary particle physics and high-energy physics.

Poster report

We study the phenomenon of high energy proton stopping in the nuclear matter and suggest the effective model that describes this effect. To compare our model with the data of relatively low energy experiment [1] we use the correlation between mean multiplicity and number of so-called grey nucleons - particles, which are knocked out of the nucleus by the incoming proton.

Proton decelerates...

270. Pseudorapidity Fluctuations in Relativistic Nuclear Interactions

Dr Mohammed Mohisin Khan (Aligarh Muslim University )

13/10/2020, 18:35

Section 4. Relativistic nuclear physics, elementary particle physics and high-energy physics.

Poster report

Results on the Event-by-event pseudorapidity fluctuations of the relativistic charged particles produced in O-AgBr interactions at 60 and 200A GeV/c will be presented. To compare the experimental results, analysis of AMPT simulated data will also be presented. Results are suggestive of the presence of pseudorapidity fluctuation and strong correlation.

375. Some Correlations of Secondary Charged Pions Produced in Ultra-relativistic Nuclear Collisions

Dr M. Ayaz Ahmad (University of Tabuk, Saudi Arabia)

13/10/2020, 18:35

Section 4. Relativistic nuclear physics, elementary particle physics and high-energy physics.

Poster report

In the present articles an attempt has been made for the determination of multiplicity distributions of the secondary charged particles produced in the central region of relativistic heavy ion collisions. Due to sophisticated measurement of energy in the nuclear emulsion experiment only some particles having special criteria could be selected to measure their energy with consenting accuracy. A...

273. Status of some parts of the TPC for the MPD at the NICA project

Mr Aleksey Bazhazhin (Joint Institute for Nuclear Research (JINR))

13/10/2020, 18:35

Section 4. Relativistic nuclear physics, elementary particle physics and high-energy physics.

Poster report

The Time-Projection Chamber (TPC) is the main tracking detector and charged particles identification of the MPD central barrel. The TPC-MPD will provide:
- The overall acceptance of |η|<1.2;
- The momentum resolution for charge particles under 3% in the transverse momentum range 0.1<pt<1GeV/c;
- Two-track resolution of about 1 cm;
- Hadron and lepton identification by dE/dx measurements...

46. Study of the interaction trigger and beam ion fragmentation for Au + Au collisions in BM@N experiment

Mr Nikita Lashmanov (Joint Institute for Nuclear Research)

13/10/2020, 18:35

Section 4. Relativistic nuclear physics, elementary particle physics and high-energy physics.

Poster report

The Monte-Carlo simulation of the trigger detector performance and interaction trigger efficiency for Au + Au collisions in BM@N[1-2] experiment at energy of 4 A GeV was performed with a code DCM-QGSM[3] + GEANT4[4]. The Au ion fragmentation and detection of spectator neutrons by a neutron zero-degree calorimeter and charged nuclear fragments by a forward Cherenkov counter were studied with...

417. Transverse momentum and multiplicity correlations in NICA and SPS energy range

Agniia Zviagina (St Petersburg State University (RU))

13/10/2020, 18:35

Section 4. Relativistic nuclear physics, elementary particle physics and high-energy physics.

Poster report

Correlations between multiplicity of charge particles and mean transverse momentum was observed experimentally in pp collisions from top SPS energy to LHC energy. The change of the correlation function’s shape with collision energy was successfully described by the multi-pomeron exchange model [1,2] as an interplay of string fusion and energy-momentum conservation. The situation at lower...