A5011038402- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- T-cell and B-cell Immunology
- Dark Matter and Cosmic Phenomena
- Immune Cell Function and Interaction
- Atomic and Subatomic Physics Research
- vaccines and immunoinformatics approaches
- Particle Detector Development and Performance
- Superconducting Materials and Applications
- Polynomial and algebraic computation
- Cytomegalovirus and herpesvirus research
- Distributed and Parallel Computing Systems
- Computational Physics and Python Applications
- Advanced Data Storage Technologies
- Numerical Methods and Algorithms
- Stochastic processes and statistical mechanics
- Monoclonal and Polyclonal Antibodies Research
- RNA and protein synthesis mechanisms
- Black Holes and Theoretical Physics
- Respiratory viral infections research
- Cancer Immunotherapy and Biomarkers
- Cancer Treatment and Pharmacology
- Particle Accelerators and Free-Electron Lasers
European Organization for Nuclear Research
2023-2025
University of Warwick
2024
Rutherford Appleton Laboratory
2024
Kurchatov Institute
2014-2023
Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
2023
Institute for High Energy Physics
2012-2020
Skolkovo Foundation
2017-2018
Pirogov Russian National Research Medical University
2018
Institute for Theoretical and Experimental Physics
2014-2016
Moscow Institute of Physics and Technology
2014-2016
In the present work we study production of $J/\ensuremath{\psi}+{\ensuremath{\chi}}_{c}$ and $J/\ensuremath{\psi}+J/\ensuremath{\psi}$ at LHC. The first process is forbidden leading order in gluon fusion due to $C$-parity conservation, nonvanishing contribution given by with additional emission a real gluon. Considering direct $J/\ensuremath{\psi}+J/\ensuremath{\psi}$, where allowed, have found that from higher comparable even more significant than order. Moreover, account this effect...
In the present paper we discuss $P$-wave bottomonium production within both color octet and singlet models in next-to-leading order at LHC energies. We calculate cross section transverse momentum distributions for ${\ensuremath{\chi}}_{1,2b}$ states. obtain that ratios of charmonium spin state are fundamentally complementary different ${p}_{T}$ scales. give predictions ratio $n=2$ $n=1$ radial excitations sections.
This paper is devoted to a phenomenological study of ${\ensuremath{\chi}}_{c,b}$-meson production in high energy hadronic collisions the framework nonrelativistic QCD (NRQCD). We analyze all available experimental data on ${\ensuremath{\chi}}_{c}$-meson and extract nonperturbative NRQCD matrix elements by fitting. It shown that measured ${p}_{T}$ spectra ${\ensuremath{\chi}}_{c}$-mesons mainly formed color singlet components, while...
The paper is devoted to theoretical consideration of inclusive $\eta_{c,b}$ meson production at LHC. It shown that existing experimental data on $\eta_c$ LHCb detector can be described in the framework NRQCD formalism and color-singlet component with phenomenological value matrix element $|R(0)|^2$ gives main contribution. Using this model we present prediction for integrated cross sections transverse momentum distributions other LHC detectors. case $\eta_b$ also considered.
We present theoretical analysis of paired Bc mesons production in e+e− annihilation at different energy scales taking into account full next-to-leading order QCD corrections. Both possible electroweak channels are considered: via virtual photon and Z-boson. study detail the role radiative corrections, which were found to be significant especially low energies. It is shown that contribution from Z-boson high energies (s>MZ/2) case pseudo-scalar vector (Bc+Bc⁎) mesons. Azimuthal asymmetry...
The inclusive production of a $\mathrm{\ensuremath{\Upsilon}}J/\ensuremath{\psi}$ pair in proton-proton interactions at the LHCb is considered. This process forbidden leading order perturbation theory, so channels such as double parton scattering, ${\ensuremath{\chi}}_{b}{\ensuremath{\chi}}_{c}$ with subsequent radiative decays $P$-wave quarkonia, contributions color-octet states, and next-to-leading-order corrections are studied detail. For all these we present theoretical predictions total...
In this paper we introduce Redberry --- an open source computer algebra system with native support of tensorial expressions. It provides basic tools (algebraic manipulations, substitutions, simplifications etc.) which are aware specific features indexed expressions: contractions indices, permutational symmetries, multiple index types etc. supports conventional \LaTeX-style input notation for The high energy physics package includes Feynman diagrams calculation: Dirac and SU(N) algebra,...
In this paper we focus on the main aspects of computer-aided calculations with tensors and present a new computer algebra system Redberry which was specifically designed for algebraic tensor manipulation. We touch upon distinctive features software in comparison pure scalar systems, discuss approaches used to handle tensorial expressions performance other relevant tools.
Hadronic production of $P$-wave charmonium states $χ_{cJ}$ in hadronic interaction is considered. Using experimental results CDF and LHCb collaborations we show, that contributions color-singlet components are dominant. As for color-octet mechanism, from can also be observed, while $S$-wave neglected. The best observables give information about relative importance the ratios $χ_{c2}/χ_{c1}$ $χ_{c0}/χ_{c1}$.
In the present paper we study production of χb+cc¯ at LHC within single parton scattering approach. A special attention is paid to feed-down from χb states associated ϒ+cc¯ production, which was recently studied by LHCb. We have found that this about percents total cross section seen in experiment. It shown shapes differential distributions are almost same for and double approaches except azimuthal asymmetry, most distinguishing feature latter one. conclude precise contributions necessary...
Allelic variability in the adaptive immune receptor loci, which harbor gene segments that encode B cell and T receptors (BCR/TCR), has been shown to be of critical importance for responses pathogens vaccines. In recent years, repertoire sequencing (Rep-Seq) become widespread immunology research making it most readily available source information about allelic diversity immunoglobulin (IG) (TR) loci different populations. Here we present a novel algorithm extra-sensitive specific variable (V)...
The cross sections of $J/\ensuremath{\psi}\text{ }{\ensuremath{\eta}}_{c}$ and }J/\ensuremath{\psi}$ production in ${e}^{+}{e}^{\ensuremath{-}}$ annihilation are calculated at a one-loop accuracy near $Z$-boson pole higher energies as well. Both intermediate bosons, $\ensuremath{\gamma}$ $Z$, included. It is found that $Z$ mass, the next-to-leading contribution increases by factor 3.5.
The production of the charmonium states in proton-antiproton experiments is considered at energy rates near threshold NLO. Such a consideration allows one to obtain non zero distributions over transverse momentum final and gives natural explanation existence $\chi_{c1}$-meson state, that observed experimentally cannot be produced leading order processes. crucial role scale parameter choice $\alpha_s (Q^2)$ partonic $f(x,Q^2)$ shown, correct offered.
Here, we attempt to summarize the activities of Track 3 17th International Workshop on Advanced Computing and Analysis Techniques in Physics Research (ACAT 2016).
Allelic variability in the adaptive immune receptor loci, which harbor gene segments that encode B cell and T receptors (BCR/TCR), is of critical importance for responses to pathogens vaccines. Adaptive repertoire sequencing (AIRR-seq) has become widespread immunology research making it most readily available source information about allelic diversity immunoglobulin (IG) (TR) loci. Here we present a novel algorithm extra-sensitive specific variable (V) joining (J) allele inference, allowing...
This report is devoted to the analytical calculation of heavy quarkonia production processes in modern experiments such as LHC, B-factories and superB-factories computer. Theoretical description based on factorization theorem. theorem leads special structure amplitudes which can be used develop computer algorithm calculates these automatically. this algorithm. As an example its application we present results double charmonia bottomonia decays inclusive χcJ mesons pp-collisions.