

Fundamental
Interactions of Fields and Particles
Leaders:

D.I. Kazakov
O.V. Teryaev

Participating
Countries and International organizations:
Argentina,
Armenia, Azerbaijan, Belarus, Bulgaria, Canada, CERN, Chile, China,
Czech Republic, Finland, France, Georgia, Germany, Hungary, ICTP,
India, Italy, Japan, Kazakhstan, Mexico, Mongolia, New Zealand,
Norway, Portugal, Poland, Republic of Korea, Russia, Serbia,
Slovakia, Spain, Sweden, Switzerland, USA, Ukraine, United Kingdom,
Uzbekistan, Vietnam.
Issues
addressed and main goals of research:
The
main aim of the research within the theme is the construction of
theoretical models and their application to the description of
properties of elementary particles and their interactions. This
research includes the following directions of activity.
The
development of quantum field theory formalism in gauge and
supersymmetric theories. Construction and investigation of the models
of particle physics beyond the Standard Model. Theoretical support of
experiments at the Large Hadron Collider on the search of new physics
and the study of the properties of the Higgs boson. Calculation of
radiative corrections to the processes of particle creation within
the Standard Model and its extensions. Investigation of neutrino
properties and neutrino oscillations. Investigation of the hadron
properties within quantum chromodynamics and phenomenological quark
models. Study of the hadron spin structure with the help of
generalized and transverse momentum dependent parton distributions
and theoretical support of NICA/SPD program. Study of heavy quark
properties and exotic hadrons. Lattice simulations for obtaining
nonperturbative results in gauge theories. Investigation of dense
hadronic matter and theoretical support of the MPD/NICA program.
Theoretical support of a wide range of current and future experiments
at JINR, IHEP, CERN, GSI, JLab and other physics centers.
Expected
main results in the current year:
Study
of nonsupersymmetric gauge theories of higher
dimensions, derivation of the generalized renormalization group
equations, and finding of the highenergy behavior of scattering
amplitudes in these theories.
Investigation
of the renormalization scheme dependence of scattering amplitudes in
supersymmetric gauge theories of higher dimensions.
Calculation
of the spectral density for a 3loop photon polarization operator in
QED and QCD with account for 4 particle massive cuts.
Investigation
of the renormalization group relations for the higherorder
perturbative expansion coefficients of the hadronic vacuum
polarization function as well as the relevant expressions for the
coefficients incorporating the contributions of the π^{2}terms
in the perturbative expansion of the Rratio of electronpositron
annihilation into hadrons.
Development of methods for
solving the quantum spectral curve equations in the N=4
supersymmetric Yang–Mills theories and
AharonyBergmanJafferisMaldacena models. Construction of
algorithmic solutions for universal anomalous dimensions of the twist
2 operators in 8 and 6 loop approximations, respectively.
Development
of the theory of transverse momentum dependent parton densities with
the application to heavyquark production.
Construction of
the longitudinal structure function F_{L}(x,Q^{2}) at
small x obtained
from the Froissartbounded parametrization of F_{2}(x,Q^{2}).
Large
Bjorken x variable
resummation in QCD nonsinglet data analysis of deep inelastic
scattering on a fixed target.
Calculation
of leptonpair production in exclusive hadron processes with taking
into account the electromagnetic contribution.
Calculation
of hadron spin structure effects in the framework of transverse
momentum dependent parton densities in a proton to support the
NICASPD program.
Investigation
of electromagnetic and gravitational interactions of twisted particle
states and analysis of possibilities of their production in heavyion
collisions.
Calculation
of different form factors, which parametrize the transition of a
pionnucleon mode into the virtual photon and nucleon within the QCD
lightcone sum rules, including the twist3, twist4 contributions
and the coupling constant corrections.
Determination of
the properties of the longrange hadron potential, which define
peculiar properties of the differential cross sections of
protonproton elastic scattering obtained at the LHC. Investigation
and determination of the energy dependence of new effects detected in
the experimental data by the TOTEM Collaboration at an energy of 13
TeV.
Calculation of the helicity amplitudes of
protonproton scattering in the framework of the High Energy General
Structure model with taking into account the nucleon structure for
description of the polarization effects at NICA
energies.
Investigation of the influence of quantum
anomalies on transport phenomena in a vortical relativistic fluid
containing elementary particles with spin one and polarization caused
by these phenomena; calculation of anomalous currents of particles
with spin one.
Сomparative
analysis of the results for pion transition and electromagnetic form
factors in the low and (or) moderate energy regime experiments.
Evaluation
of radiative corrections to distribution amplitudes of (pseudo)scalar
and (longitudinal and transverse) vector mesons at N^{2}LO
in the large𝛽_{0} approximation
for the perturbative part of the QCD sum rules.
Development
of the efficient Monte Carlo integration and event generation method
based on machine learning algorithms using the existing Tensorflow
and Keras machine learning libraries.
Test
of leptonic universality for the convexity parameter in semileptonic
meson and baryon decays independent of lepton mass and form factor
effects.
Calculations
of nonleptonic twoparticle decays of charmed baryons including the
quark diagrams topologically different from tree diagrams.
Improvement
of the values of the fundamental constants of atomic physics (Rydberg
constant, the ratio of the proton to electron masses) and imposing of
more stringent restrictions on the interaction potentials of the
"fifth" force using the effective field theory
"Nonrelativistic quantum electrodynamics" and high
precision spectroscopy of HD^{+},
antiproton helium and molecular ion H_{2}^{+}.
Investigation
of the reactor antineutrino anomaly (RAA) within the framework of
a quantum field theoretical approach to neutrino oscillations.
Analysis of the early reactor data and most recent results from the
new experiments such as PROSPECT, Stereo, NEUTRINO4, and DANSS.
Description
of differential distributions of semileptonic modes of taulepton
decays studied at modern and future colliders with taking into
account mesonmeson interactions.
Construction
of highprecision theoretical predictions for the main processes of
electronpositron annihilation taking into account the initial beam
polarization under the conditions of future colliders including the
Super CharmTau Factory, ILC and FCCee.
Description
of the structure of quark and hybrid matter in neutron stars using
the extended sigma model.
Study of the properties of the
lowtemperature highdensity equation of state from multimessenger
Astronomy of compact stars and their mergers: indications the
existence of a third family of compact stars (mass twins) and
implications for the existence of a critical endpoint in the QCD
phase diagram; Bayesian analyses of new observables from GW170817,
GW190814 and NICER for different mixed phase constructions of the
hybrid quarkhadron EoS; question of the onset of deconfinement in
the massradius diagram and in the EoS, hybrid EoS regarding
their supernova explodability property.
Development
of selfconsistent approximations to dilute heated hadronic matter in
application to heavy ion collisions and supernova matter.
Investigation of the influence of inmedium pion effects, magnetic
field and rotation on the equation of state of heated hadron matter.
Calculation
of the mass gap in the fermion spectrum and study of its dependence
on the chemical potential in QCDlike theories by means of lattice
simulations.
Study
of the QCD equation of state in the external magnetic field and at
nonzero baryon density within lattice simulation.
Study of
a chiral magnetic wave in quarkgluon plasma in an external magnetic
field using lattice simulation with dynamical quarks and physical
mass of the πmeson.
Investigation
of the finite size effects in the effective potential of gluodynamics
for selfdual and chromomagnetic background gluon fields within
lattice simulations under various boundary conditions.
Study
of spectral functions of quark bound states within the effective
quarkmeson model by means of the functional renormalisation group.
Application of these spectral functions for calculation of transport
coefficients in the effective model for both massive bare quarks and
the chiral limit of massless quarks.
Development
of a unified quarkhadron equation of state satisfying the
constraints of Lattice QCD to study the hadron resonance gas with the
Mott dissociation and quark confinement mechanism, application to a
system with high baryon and isospin densities and prediction of
critical endpoint location(s) in application to relativistic heavy
ion experiments as well as compact star astrophysics.
Inclusion
of eventbyevent effects in the HydHSD hybrid model of heavy ion
collisions, which combines viscous hydrodynamics of second order with
the HSD/PHSD kinetic model, for a detailed study of an elliptic
flow.
Update of the event generator based on the model of
threefluid dynamics (3FD). This updated version will be more
suitable for simulations of heavyion collisions at BM@N and MPDNICA
energies. Study of production of nuclear fragments in heavyion
collisions, formation and time evolution of collective flow in
heavyion collisions within the updated THESEUS generator.
Study
of the origin and applications of the Tsallis nonextensive
statistics describing systems with longrange correlation in a more
detailed manner by relaxing the factorization approximation.
Investigation of the propagation of nonlinear waves inside
quarkgluon plasma medium following the Tsallislike momentum
distribution for realistic phenomenological problems of relativistic
heavy ion physics.
List
of Activities:



Activity
or experiment

Leaders



Laboratory
or other
Division of JINR

Main
researchers

1.

Quantum
field theory and physics
beyond the Standard Model

D.I.
Kazakov
A.V. Gladyshev
A.V. Bednyakov



BLTP

A.N. Baushev,
A.T. Borlakov,
Ch.R. Das,
V. Gnatich,
A.V. Kotikov,
G.A. Kozlov,
L. Mizhishin,
V.A. Naumov,
A.V. Nesterenko,
A.I. Onishenko,
A.F. Pikelner,
R. Remetsky,
D.M. Tolkachev,
S.I. Vinitsky,
A.A. Vladimirov,
R.M. Yakhibbaev,
5 students


LIT

O.V. Tarasov


DLNP

V.A. Bednyakov,
Yu.A. Budagov,
E.V. Hramov,
L.V. Kalinovskaya,
L.G. Tkachev,
E.V. Yakushev

2.

QCD
parton distributions for
modern and future colliders

I.V.
Anikin
O.V. Teryaev




BLTP

V.V.
Byt'yev, M. Deka, S.V. Goloskokov,
D.B. Kotlorz,
Y.A. Klopot, S.V. Mikhailov, A.A. Pivovarov, G.Yu. Prokhorov,
A.G. Oganesyan, O.V. Selyugin, A.J. Silenko, N.I.
Volchanskiy, 6 students



VBLHEP

Yu.I.
Ivanshin, A.P. Nagaitsev, I.A. Savin, R. Tsenov


DLNP

A.V.
Guskov

3.

Strong
interactions phenomenology
and precision physics

M.A.
Ivanov
V.I. Korobov
A.E. Dorokhov



BLTP

A.B. Arbuzov,
D. Alvarez, A.K. Bekbaev, Yu.M. Bystritsky, S.M. Eliseev,
C. Ganbold, S.B. Gerasimov, A.N. Isadykov,
L. Martynovich,
K. Nurlan, H.P. Pavel, A.A. Osipov, A.V. Sidorov,
Yu.S. Surovtsev, Zh. Tyulemisov,
M.K. Volkov,
S.A. Zhaugasheva,
5
students

4.

Theory
of Hadronic Matter under
extreme conditions

D.
Blaschke
V.V. Braguta
E.E. Kolomeitsev
S.N. Nedelko



BLTP

D.E.
AlvarezCastillo, N.Yu. Astrakhantsev, T. Bhattacharyya,
M. Deka,
S. Dorkin, A.E. Dorokhov, A.V. Friesen,
A.A. Golubtsova,
M. Hnatic, M. Hasegawa, Yu.B. Ivanov,
E.M. Ilgenfritz,
L. Kaptari, A.S. Khvorostukhin, A.Yu. Kotov, K. Maslov,
V.S. Melezhik, A.V. Nikolsky, S. Pandiat, A. Parvan,
A.M. Snigirev, V.D. Tainov, O.V. Teryaev, V.D. Toneev,
V.E. Voronin,
D. Voskresensky, G.M. Zinoviev, 4 students


LIT

A.S.
Ayriyan, H. Grigorian, Yu.L. Kalinovsky, E.G. Nikonov


VBLHEP

O.V.
Rogachevsky, V. Voronyuk

5.

Theory
of electroweak interactions
and neutrino physics

A.B.
Arbuzov
V.A. Naumov
F. Simkovic



BLTP

А. Babic,
A.V. Bednyakov, Yu.M. Bystritskiy, V.V. Byt'yev, A.E.
Dorokhov, I.D.
Kakorin,
M.I. Krivoruchenko, K.S. Kuzmin, A.F. Pikel'ner,
D.S. Shkirmanov, G. Seylkhanova, I.A. Sokal'skiy, 1 student


VBLHEP

V.A. Zykunov


DLNP

Ye.V.
Dydyshko, L.V. Kalinovskaya, D.V. Naumov, O.N. Petrova,
R.R. Sadykov, A.A. Sapronov, O.Yu. Smirnov,
V.I. Tretyak,
2 students

Collaboration
Country
or International Organization

City

Institute
or laboratory

Argentina

Buenos
Aires

CNEA

Armenia

Yerevan

Foundation
ANSL



RAU

Azerbaijan

Baku

BSU



IP
ANAS

Belarus

Gomel

GSTU



GSU


Minsk

BSU



INP
BSU



IP
NASB



JIPNRSosny
NASB

Bulgaria

Sofia

INRNE
BAS



SU

Canada

Corner
Brook

MUN


Montreal

UdeM

CERN

Geneva

CERN

Chile

Valparaiso

UV

China

Beijing

PKU


Lanzhou

IMP
CAS


Wuhan

WIPM
CAS

Czech
Republic

Prague

CTU



CU



IP
CAS


Rez

NPI
CAS

Finland

Helsinki

UH

France

Lyon

UCBL


Metz

UPVM


Montpellier

UM2


Paris

UPMC


Saclay

IRFU



SPhN
CEA DAPNIA

Georgia

Tbilisi

RMI
TSU



TSU

Germany

Aachen

RWTH


Berlin

FU
Berlin



HU
Berlin


Bielefeld

Univ.


Bochum

RUB


Bonn

UniBonn


Darmstadt

GSI



TU
Darmstadt


Dortmund

TU
Dortmund


Erlangen

FAU


Frankfurt/Main

FIAS


Hamburg

DESY



Univ.


Heidelberg

Univ.


Jena

Univ.


Julich

FZJ


Kaiserslautern

TU


Karlsruhe

KIT


Mainz

HIM



JGU


Munich

LMU


Regensburg

UR


Rostock

Univ.


Tubingen

Univ.


Wuppertal

UW


Zeuthen

DESY

Hungary

Budapest

ELTE



Wigner
RCP

ICTP

Trieste

ICTP

India

Bhubaneswar

IOP


Chennai

IMSc


Kolkata

VECC

Italy

Naples

INFN


Padua

UniPd


Pavia

INFN


Pisa

INFN


Trieste

SISSA/ISAS


Turin

UniTo

Japan

Chiba

Chiba
U


Kyoto

Kyoto
Univ.


Nagoya

Nagoya
Univ.


Osaka

Osaka
Univ.


Tokyo

Meiji
Univ.



Tokyo
Tech



UT


Tsukuba

KEK

Kazakhstan

Almaty

FAPHI



INP


NurSultan

BA
INP

Mexico

Cuernavaca

UNAM

Mongolia

Ulaanbaatar

IPT
MAS

New
Zealand

Hamilton

Univ.

Norway

Trondheim

NTNU

Poland

Kielce

JKU


Krakow

INP
PAS


Lodz

UL


Otwock
(Swierk)

NCBJ


Wroclaw

ITP
UW

Portugal

Coimbra

UC

Republic
of Korea

Cheongju

CBNU


Daegu

KNU


Seoul

SNU

Russia

Belgorod

BelSU


Chernogolovka

LITP
RAS


Gatchina

NRC
KI PNPI


Irkutsk

ISDCT
SB RAS


Ivanovo

ICS
RAS



ISU


Kazan

KFU


Moscow

IBRAE



IMM
RAS



ITEP



LPI
RAS



MI
RAS



MISiS



MSU



PFUR



SCC
RAS



SINP
MSU


Moscow,
Troitsk

INR
RAS


Novosibirsk

BINP
SB RAS



IM
SB RAS


Omsk

OmSU


Perm

PSNRU


Protvino

IHEP


RostovonDon

SFedU


Samara

SSU



SU


Saratov

SSU


Sarov

VNIIEF


St.
Petersburg

SPbSPU



SPbSU


Tomsk

IHCE
SB RAS



TSU


Tver

TvSU


YoshkarOla

VSUT

Serbia

Belgrade

Univ.

Slovakia

Bratislava

CU



IP
SAS


Kosice

IEP
SAS

Spain

Santiago
de Compostela

USC


Valencia

UV

Sweden

Lund

LU

Switzerland

Bern

Uni
Bern

Ukraine

Dnipro

DNU


Kharkov

NSC
KIPT


Kiev

BITP
NASU


Lutsk

EENU


Lviv

IAPMM
NASU



IFNU


Sumy

SumSU

United
Kingdom

Canterbury

Univ.


London

Imperial
College



QMUL

USA

College
Park, MD

UMD


East
Lansing, MI

MSU


Lemont,
IL

ANL


Long
Beach, CA

CSULB


Minneapolis,
MN

U
of M


New
York, NY

CUNY



RU


Newport
News, VA

JLab


Norman,
OK

OU


Philadelphia,
PA

Penn


San
Diego, CA

SDSU


University
Park, PA

Penn
State

Uzbekistan

Tashkent

IAP
NUU



NUU

Vietnam

Hanoi

IOP
VAST

 
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