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Daniel Kikola

Publications and source records attributed to Daniel Kikola.

8 recordsLinked to original sources
arXiv2025

Apparent teleportation of indistinguishable particles

Teleportation, introduced in science fiction literature, is an instantaneous change of the position of a macroscopic object. Two teleportation-like phenomena have been predicted by quantum mechanics: quantum teleportation and, more recently, quantum particle teleportation. Here, we introduce the third teleportation-like phenomenon - apparent teleportation. It seems to be a natural consequence of the Standard Model's indistinguishable elementary particles and antiparticles. We illustrate the idea within a 1+1D toy model of particle-antiparticle creation and space-time evolution obeying transport locality. Furthermore, we propose a novel method to observe apparent teleportation driven by strong interactions through measurements of correlations between the momenta of charm and anticharm hadrons in nuclear collisions. Observing the apparent teleportation would uncover the basic transport properties of indistinguishable particles.

nucl-th↗
arXiv2024

Resolved photoproduction in {\tt MadGraph5\_aMC@NLO}

The upcoming Electron-Ion Collider (EIC), with its high luminosity, will offer an unprecedented opportunity to explore the internal structure of atomic nucleus over an extended energy range from $\sqrt{s_{ep}} =$ 45 GeV to $\sqrt{s_{ep}} =$ 140 GeV. A particularly promising aspect of this collider is the study of the partonic structure with quasi-real photons which can also be studied in inclusive ultra-peripheral collisions at the Large Hadron Collider (LHC). In this work, we present our validation of resolved photoproduction at fixed order for (next-to-)leading order using \texttt{MadGraph5\_aMC@NLO}, a widely adopted framework at the LHC.

hep-ph↗
arXiv2024

Asymmetric collisions in MadGraph5_aMC@NLO

We will gain unprecedented, high-accuracy insights into the internal structure of the atomic nucleus thanks to lepton-hadron collision studies in the coming years at the Electron-Ion-Collider (EIC) in the United States. A good control of radiative corrections is necessary for the EIC to be fully exploited and to extract valuable information from various measurements. We present our extension of photoproduction at fixed order in MadGraph5_aMC@NLO, a widely used framework for (next-to-)leading order calculations at the Large Hadron Collider (LHC). It applies to electron-hadron collisions, in which the quasi-real photon comes from an electron as well as to proton-nucleus and nucleus-nucleus collisions.

hep-ph↗
arXiv2014

Estimate of cold nuclear matter effects on bottom production in d+Au collisions at $\sqrt{s_{NN}} = 200$ GeV

We investigate modification of the bottom quark production due to cold nuclear matter effects (CNM) at mid-rapidity in d+Au collisions at $\sqrt{s_{NN}} = 200$ GeV at RHIC. Our results indicate that bottom production is not suppressed due to CNM effects in those collisions. We also found that shadowing and initial $k_T$ breadboarding for charm quarks explains at low $p_T$ ($p_T < 3$ GeV/c) the enhancement of heavy flavor decay electron yield in d+Au collisions at $\sqrt{s_{NN}} = 200$ GeV compared to p+p.

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arXiv2012

Decomposition of flow and nonflow in relativistic heavy-ion collisions

We propose a method to separate Δη-dependent and Δη-independent azimuthal correlations using two- and four-particle cumulants between pseudo-rapidity (η) bins in symmetric heavy-ion collisions. The Δη-independent correlation may be dominated by harmonic flows, a global correlation to the common collision geometry. The Δη-dependent correlation can be identified as nonflow, particle correlations unrelated to the common geometry. Our method exploits the ηsymmetry of the average harmonic flows and is "data-driven." We use the AMPT and HIJING event generators to illustrate our method. We discuss the decomposed Δη-independent and Δη-dependent correlations regarding flow and nonflow in the models.

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arXiv2009

J/psi production in Au+Au and Cu+Cu collisions at sqrt(sNN) = 200 GeV at STAR

J/psi production is considered to be a sensitive probe of the properties of quark gluon plasma created in nucleus+nucleus collisions at RHIC. In this article, the recent analysis of mid-rapidity (|y| < 1) J/psi production via the dielectron decay channel in Au+Au (year 2007) and Cu+Cu (year 2005) collisions at sqrt(sNN) = 200 GeV at STAR is reported. It is compared to STAR p+p results in order to study the nuclear modification factor as a function of transverse momentum and centrality. The results are compared to previously published data and available theoretical models.

nucl-ex↗
arXiv2006

The new computer program for three dimensional relativistic hydrodynamical model

An effective computer program for three dimensional relativistic hydrodynamical model has been developed. It implements a new approach to the early hot phase of relativistic heavy-ion collisions. The computer program simulates time-space evolution of nuclear matter in terms of ideal-fluid dynamics. Equations of motions of hydrodynamics are solved making use of finite difference methods. Commonly-used algorithms of numerical relativistic hydrodynamics RHLLE and MUSTA-FORCE have been applied in simulations. To speed-up calculations, parallel processing has been made available for solving hydrodynamical equations. The test results of simulations for 3D, 2D and Bjorken expansion are reported in this paper. As a next step we plan to implement the hadronization algorithm by implementing the continuous particle emission for freeze-out and comparing it with Cooper-Frye formula.

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