S. P. Adhya's research while affiliated with WWF Poland and other places

Publications (49)

Preprint
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In this work, we explore the features of gluonic cascades in static and Bjorken expanding media by solving the full BDIM evolution equations in longitudinal momentum fraction $x$ and transverse momentum $\boldsymbol{k}$ numerically using the Monte Carlo event generator MINCAS. Confirming the scaling of the energy spectra at low-$x$, discovered in e...
Article
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We present the calculation of longitudinal electrical conductivity in magnetized plasma considering dynamical screening in the context of binary neutron star mergers. We consider strongly quantizing domain for significant modification in the transport coefficient due to magnetic field. Boltzmann equation in presence of magnetic field is solved to o...
Article
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Going beyond the simplified gluonic cascades, we introduce both gluon and quark degrees of freedom for partonic cascades inside the medium. We then solve the set of coupled evolution equations numerically with splitting kernels calculated for static, exponential, and Bjorken expanding media to arrive at medium-modified parton spectra for quark and...
Preprint
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We examine nature of longitudinal electrical conductivity in magnetized electron-ion plasma in the context of binary neutron star mergers. In presence of strong magnetic field, high density and temperature, quantum oscillatory behaviour for electrons emerge due to breakdown of the classical description. For pronounced thermodynamic effects, we cons...
Preprint
Full-text available
Going beyond the simplified gluonic cascades, we introduce both gluon and quark degrees of freedom for partonic cascades inside the medium. We then solve the set of coupled evolution equations numerically with splitting kernels calculated for static, exponential, and Bjorken expanding media to arrive at medium-modified parton spectra for quark and...
Preprint
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Comprehensive understanding of medium-induced radiative energy loss is of a paramount importance in describing observed jet quenching in heavy-ion collisions. In this work, we have calculated the medium-modified gluon splitting rates for different profiles of the expanding partonic medium, namely profiles for static, exponential, and Bjorken expand...
Article
Full-text available
Comprehensive understanding of medium-induced radiative energy loss is of a paramount importance in describing observed jet quenching in heavy-ion collisions. In this work, we have calculated the medium-modified gluon splitting rates for different profiles of the expanding partonic medium, namely profiles for static, exponential, and Bjorken expand...
Preprint
We present a study of the impact of the expansion of deconfined medium on single-gluon emission spectra and the jet suppression factor ($Q_{AA}$) within the BDMPS-Z formalism. These quantities are calculated for three types of media (static medium, exponentially decaying medium and Bjorken expanding medium). The distribution of medium-induced gluon...
Article
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The production of K*(892)0 and ϕ(1020) in pp collisions at s=8 TeV was measured by using Run 1 data collected by the ALICE collaboration at the CERN Large Hadron Collider (LHC). The pT-differential yields d2N/dydpT in the range 0<pT<20 GeV/c for K*0 and 0.4<pT<16 GeV/c for ϕ have been measured at midrapidity, |y|<0.5. Moreover, improved measurement...
Article
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A bstract Detailed insight into the interplay between parton energy loss and the way deconfined medium created in heavy-ion collisions expands is of great importance for improving the understanding of the jet quenching phenomenon. In this paper we study the impact of the expansion of deconfined medium on the single-gluon emission spectrum, its resu...
Article
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Midrapidity production of π±, K±, and (p¯)p measured by the ALICE experiment at the CERN Large Hadron Collider, in Pb-Pb and inelastic pp collisions at sNN=5.02 TeV, is presented. The invariant yields are measured over a wide transverse momentum (pT) range from hundreds of MeV/c up to 20 GeV/c. The results in Pb-Pb collisions are presented as a fun...
Article
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The global polarization of the Λ and Λ¯ hyperons is measured for Pb-Pb collisions at sNN=2.76 and 5.02 TeV recorded with the ALICE at the Large Hadron Collider (LHC). The results are reported differentially as a function of collision centrality and hyperon's transverse momentum (pT) for the range of centrality 5–50%, 0.5<pT<5 GeV/c, and rapidity |y...
Article
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The elliptic flow (v2) of (anti-)³He is measured in Pb–Pb collisions at sNN=5.02TeV in the transverse-momentum (pT) range of 2–6 GeV/c for the centrality classes 0–20%, 20–40%, and 40–60% using the event-plane method. This measurement is compared to that of pions, kaons, and protons at the same center-of-mass energy. A clear mass ordering is observ...
Article
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The study of the strength and behavior of the antikaon-nucleon (K¯N) interaction constitutes one of the key focuses of the strangeness sector in low-energy quantum chromodynamics (QCD). In this Letter a unique high-precision measurement of the strong interaction between kaons and protons, close and above the kinematic threshold, is presented. The f...
Article
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Two-particle correlation functions were measured for pp‾, pΛ‾, p‾Λ, and ΛΛ‾ pairs in Pb–Pb collisions at sNN=2.76 TeV and sNN=5.02 TeV recorded by the ALICE detector. From a simultaneous fit to all obtained correlation functions, real and imaginary components of the scattering lengths, as well as the effective ranges, were extracted for combined pΛ...
Article
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The ALICE collaboration at the CERN LHC reports novel measurements of jet substructure in pp collisions at s=7 TeV and central Pb–Pb collisions at sNN=2.76 TeV. Jet substructure of track-based jets is explored via iterative declustering and grooming techniques. We present the measurement of the momentum sharing of two-prong substructure exposed via...
Article
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The differential invariant yield as a function of transverse momentum (pT) of electrons from semileptonic heavy-flavour hadron decays was measured at midrapidity in central (0–10%), semi-central (30–50%) and peripheral (60–80%) lead–lead (Pb–Pb) collisions at sNN=5.02 TeV in the pT intervals 0.5–26 GeV/c (0–10% and 30–50%) and 0.5–10 GeV/c (60–80%)...
Article
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The multiplicity dependence of electron production from heavy-flavour hadron decays as a function of transverse momentum was measured in p-Pb collisions at \( \sqrt{s_{\mathrm{NN}}} \) = 5.02 TeV using the ALICE detector at the LHC. The measurement was performed in the centre-of-mass rapidity interval −1.07 < ycms< 0.14 and transverse momentum inte...
Article
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The production rates and the transverse momentum distribution of strange hadrons at mid-rapidity (\(\left| y\right| < 0.5\)) are measured in proton-proton collisions at \(\sqrt{s}\) = 13 TeV as a function of the charged particle multiplicity, using the ALICE detector at the LHC. The production rates of \(\mathrm{K}^{0}_{S}\), \(\Lambda \), \(\Xi \)...
Article
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The production of the \(\Lambda \)(1520) baryonic resonance has been measured at midrapidity in inelastic pp collisions at \(\sqrt{s} = 7\ \hbox {TeV}\) and in p–Pb collisions at \(\sqrt{s_{\mathrm{NN}}} = 5.02\ \hbox {TeV}\) for non-single diffractive events and in multiplicity classes. The resonance is reconstructed through its hadronic decay cha...
Article
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A bstract The inclusive J /ψ production in Pb–Pb collisions at the center-of-mass energy per nucleon pair $$ \sqrt{s_{\mathrm{NN}}} $$ s NN = 5 . 02 TeV, measured with the ALICE detector at the CERN LHC, is reported. The J /ψ meson is reconstructed via the dimuon decay channel at forward rapidity (2 . 5 < y < 4) down to zero transverse momentum. Th...
Article
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A bstract The measurement of the production of prompt D ⁰ , D ⁺ , D *+ , and $$ {\mathrm{D}}_{\mathrm{S}}^{+} $$ D S + mesons in proton–lead (p–Pb) collisions at the centre-of-mass energy per nucleon pair of $$ \sqrt{s_{\mathrm{NN}}} $$ s NN = 5 . 02 TeV, with an integrated luminosity of 292 ± 11 μ b − 1 , are reported. Differential production cros...
Preprint
A detailed insight into the interplay between parton energy loss and the way how deconfined medium created in heavy-ion collisions expands is of a great importance for improving the understanding of the jet quenching phenomenon. In this paper we study the impact of the expansion of deconfined medium on single-gluon emission spectra and the jet supp...
Article
Full-text available
The cross section of jets reconstructed from charged particles is measured in the transverse momentum range of 5<pT<100 GeV/c in pp collisions at the center-of-mass energy of s=5.02 TeV with the ALICE detector. The jets are reconstructed using the anti-kT algorithm with resolution parameters R=0.2, 0.3, 0.4, and 0.6 in the pseudorapidity range |η|<...
Article
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The first measurement of the ϒ(1S) elliptic flow coefficient (v2) is performed at forward rapidity (2.5<y<4) in Pb–Pb collisions at sNN=5.02 TeV with the ALICE detector at the LHC. The results are obtained with the scalar product method and are reported as a function of transverse momentum (pT) up to 15 GeV/c in the 5%–60% centrality interval. The...
Article
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The production cross section of inclusive isolated photons has been measured by the ALICE experiment at the CERN LHC in pp collisions at a centre-of-momentum energy of \(\sqrt{s}=\) 7 TeV. The measurement is performed with the electromagnetic calorimeter EMCal and the central tracking detectors, covering a range of \(|\eta |<0.27\) in pseudorapidit...
Article
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Measurements of anisotropic flow coefficients (vn) and their cross-correlations using two- and multiparticle cumulant methods are reported in collisions of pp at s=13 TeV, p−Pb at a center-of-mass energy per nucleon pair sNN=5.02 TeV, Xe-Xe at sNN=5.44 TeV, and Pb-Pb at sNN=5.02 TeV recorded with the ALICE detector. The multiplicity dependence of v...
Article
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We present a study of the inclusive charged-particle transverse momentum (\(p_{\mathrm{T}}\)) spectra as a function of charged-particle multiplicity density at mid-pseudorapidity, \(\mathrm{d}N_{\mathrm{ch}}/\mathrm{d}\eta \), in pp collisions at \(\sqrt{s}=5.02\) and 13 TeV covering the kinematic range \(|\eta |<0.8\) and \(0.15<p_{\mathrm{T}} <20...
Article
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The measurement of the deuteron and anti-deuteron production in the rapidity range −1<y<0 as a function of transverse momentum and event multiplicity in p–Pb collisions at sNN = 5.02 TeV is presented. (Anti-)deuterons are identified via their specific energy loss dE/dx and via their time-of-flight. Their production in p–Pb collisions is compared to...
Article
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A bstract Inclusive J /ψ production is studied in minimum-bias proton-proton collisions at a centre-of-mass energy of $$ \sqrt{s} $$ s = 5 . 02 TeV by ALICE at the CERN LHC. The measurement is performed at mid-rapidity ( |y| < 0 . 9) in the dielectron decay channel down to zero transverse momentum p T , using a data sample corresponding to an integ...
Article
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This Letter presents the first experimental observation of the attractive strong interaction between a proton and a multistrange baryon (hyperon) Ξ−. The result is extracted from two-particle correlations of combined p−Ξ−⊕p¯−Ξ¯+ pairs measured in p−Pb collisions at sNN=5.02 TeV at the LHC with ALICE. The measured correlation function is compared wi...
Article
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An improved value for the lifetime of the (anti-)hypertriton has been obtained using the data sample of Pb–Pb collisions at sNN=5.02 TeV collected by the ALICE experiment at the LHC. The (anti-)hypertriton has been reconstructed via its charged two-body mesonic decay channel and the lifetime has been determined from an exponential fit to the dN/d(c...
Article
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The ALICE collaboration performed the first rapidity-differential measurement of coherent J/ψ photoproduction in ultra-peripheral Pb–Pb collisions at a center-of-mass energy sNN=5.02 TeV. The J/ψ is detected via its dimuon decay in the forward rapidity region (−4.0<y<−2.5) for events where the hadronic activity is required to be minimal. The analys...
Article
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A bstract Two-particle correlations in high-energy collision experiments enable the extraction of particle source radii by using the Bose-Einstein enhancement of pion production at low relative momentum q ∝ 1/ R . It was previously observed that in pp collisions at $$ \sqrt{s} $$ s = 7TeV the average pair transverse momentum k T range of such analy...
Article
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A bstract Production cross sections of muons from semi-leptonic decays of charm and beauty hadrons were measured at forward rapidity (2 . 5 < y < 4) in proton-proton (pp) collisions at a centre-of-mass energy $$ \sqrt{s} $$ s = 5 . 02 TeV with the ALICE detector at the CERN LHC. The results were obtained in an extended transverse momentum interval,...
Article
Full-text available
The correlations of identical charged kaons were measured in p-Pb collisions at sNN=5.02 TeV by the ALICE experiment at the LHC. The femtoscopic invariant radii and correlation strengths were extracted from one-dimensional kaon correlation functions and were compared with those obtained in pp and Pb-Pb collisions at s=7 TeV and sNN=2.76 TeV, respec...
Article
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This work presents new constraints on the existence and the binding energy of a possible Λ–Λ bound state, the H-dibaryon, derived from Λ–Λ femtoscopic measurements by the ALICE collaboration. The results are obtained from a new measurement using the femtoscopy technique in Image 1 collisions at s=13 TeV and p–Pb collisions at sNN=5.02 TeV, combined...
Article
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A bstract The production of charm jets in proton-proton collisions at a center-of-mass energy of $$ \sqrt{s}=7 $$ s = 7 TeV was measured with the ALICE detector at the CERN Large Hadron Collider. The measurement is based on a data sample corresponding to a total integrated luminosity of 6 . 23 nb ⁻¹ , collected using a minimum-bias trigger. Charm j...
Article
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The jet radial structure and particle transverse momentum (pT) composition within jets are presented in centrality-selected Pb–Pb collisions at sNN=2.76 TeV. Track-based jets, which are also called charged jets, were reconstructed with a resolution parameter of R=0.3 at midrapidity |ηch jet|<0.6 for transverse momenta pT,ch jet=30–120 GeV/c. Jet–ha...
Article
Full-text available
The measurements of the production of prompt \({{\mathrm{D}}^0}\), \({{\mathrm{D}}^+}\), \({{\mathrm{D}}^{*+}}\), and \({{\mathrm{D}}^+_{\mathrm{s}}}\) mesons in proton–proton (pp) collisions at \(\sqrt{s}=5.02~\mathrm {TeV}\) with the ALICE detector at the Large Hadron Collider (LHC) are reported. D mesons were reconstructed at mid-rapidity (\(|y|...
Article
Full-text available
In this letter, the production of deuterons and anti-deuterons in pp collisions at s=7 TeV is studied as a function of the charged-particle multiplicity density at mid-rapidity with the ALICE detector at the LHC. Production yields are measured at mid-rapidity in five multiplicity classes and as a function of the deuteron transverse momentum (pT). T...
Article
Full-text available
The pseudorapidity density of charged particles, \(\mathrm {d}N_{\mathrm{ch}}/\mathrm {d}\eta \), in p–Pb collisions has been measured at a centre-of-mass energy per nucleon–nucleon pair of \(\sqrt{s_{\scriptscriptstyle {\mathrm{NN}}}}\) = 8.16 TeV at mid-pseudorapidity for non-single-diffractive events. The results cover 3.6 units of pseudorapidit...
Article
A measurement of the production of prompt 􏰟+c baryons in Pb–Pb collisions at √sNN = 5.02 TeV with the ALICE detector at the LHC is reported. The 􏰟Lambda+c and AntiLambda􏰟−c were reconstructed at midrapidity (|y| < 0.5) via the hadronic decay channel 􏰟Lambda+c →pK0S (and charge conjugate) in the transverse momentum and centrality intervals 6 < pT <...
Article
Full-text available
A bstract The transverse structure of jets was studied via jet fragmentation transverse momentum ( j T ) distributions, obtained using two-particle correlations in proton-proton and proton-lead collisions, measured with the ALICE experiment at the LHC. The highest transverse momentum particle in each event is used as the trigger particle and the re...
Preprint
In this work, we extend the resummation of multiple medium-induced emissions to apply to dynamically expanding media. This is done by recasting the quenching weight as the solution of a rate equation with medium-induced partonic splitting functions that are sensitive to the expansion. We perform the calculations in the framework of Baier-Dokshitzer...

Citations

... One of the recently actively investigated problems is to account for the expansion of the medium together with turbulent dynamics of jet losing energy. In particular, in Ref. [41], the medium-modified gluon splitting rates for different profiles of the expanding partonic medium, namely the profiles for the static, exponential, and Bjorken expanding medium were calculated. This generalized the rate equation for energy distribution that accounts for multiple soft scatterings with a time-dependent transport coefficient characterizing the expanding medium. ...
... On the contrary, if regeneration is dominant, the above ratio is expected to be larger in central compared to peripheral (and small system) collisions. In previous RHIC [11][12][13][14][15], SPS [16,17], and LHC [18][19][20][21][22][23][24] measurements, it is observed that the K * 0 /K ratio is indeed smaller in central heavy-ion collisions than in peripheral, and elementary (e.g. p+p) collisions. ...
... Further discussion about the expanding media can be found in Refs. [28,41,[43][44][45]. ...
... Implications for QGP properties.- Figure 2 shows the posterior parameter analysis for the nucleon width w when including (left) or excluding (right) σ AA . The unweighted red dashed fit is the result of a global analysis of 653 experimental data points [14, [25][26][27][28][29][30][31][32][33][34][35] (see also the Supplemental Material [36]) with a 21-dimensional parameter space within the publicly available TRAJECTUM1.3 framework [37] similar to [11,13,38], but full details will be presented elsewhere [39]. TRAJECTUM translates the nucleon configurations into a QGP that evolves according to second order relativistic hydrodynamics until it particlizes into hadrons that are transported to the experimental detectors using the SMASH code [40][41][42]. ...
... This is interesting in the context of recent proposals that the glasma is produced in a rapidly rotating state, which could be detected by looking for the polarization of produced hyperons. There have been calculations that predict very large values for the initial angular momentum of the system [8][9][10], but significant final state polarization effects have not been observed [11,12]. In this paper, we develop a formulation to calculate the angular momentum of a system of real scalar fields. ...
... Experimental data on light nuclei production accumulated recently at the BNL Relativistic Heavy Ion Collider (RHIC) and the CERN Large Hadron Collider (LHC) exhibit a number of fascinating features [37][38][39][40][41][42][43][44][45][46][47][48][49][50][51]. The most striking ones might be the behavior of the coalescence factor B A as a function of the size of the collision system and the transverse momentum per nucleon p T /A [40][41][42][45][46][47][48][49][50][51]. ...
... ALICE has also performed measurements of the heavy-flavor hadrons as an additional probe of parton-medium interactions, with examples found in [74][75][76]. Heavy flavor hadrons offer a unique opportunity to study the medium effects because of the well established probe -heavy quarks. These are created early in the hard scatterings, and maintain their flavor identity throughout the evolution of the medium. ...
... The technique was traditionally used to determine the size of the emission region and its dependence on the particle-pair transverse momentum and transverse mass, and on the event multiplicity [5,6]. Recently, there has been a great interest in studying the interaction of particles using femtoscopy methods along with a parameterization of the size of the particle emitting source [7][8][9][10][11][12][13][14][15][16] to analyze the measured correlation functions. There has also been interest in the femtoscopic correlations of pairs of non-identical kaons involving a neutral kaon K 0 S K ± [17][18][19]. ...
... The ALICE data indicate that the Λ(1520)/Λ ratio does not change with multiplicity in p-Pb collisions [17] but is suppressed in central Pb-Pb collisions [19]; this trend is also qualitatively described by EPOS3. The ALICE measurement of the Ξ(1530) 0 /Ξ ratio is multiplicityindependent for p-Pb collisions [12], which are also consistent with a preliminary measurement in peripheral Pb-Pb collisions [18]. ...
... To take this effect into account, the particle abundances from the event generator are re-weighted by means of a data-driven approach that was already employed in other ALICE analyses [8,42]. This particle-composition correction utilises several ALICE measurements of identified (π, K, p, Λ) particle p T spectra as a function of multiplicity (in coarse intervals) for a range of collision systems [53][54][55][56][57] as input and offers N ch -and p T -dependent correction factors for particle abundances. These data-driven adjustments for the generator bias result in a more accurate description of the detector performance and are applied prior to the unfolding corrections described in the following. ...