S. Acharya
A5100426631- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Computational Physics and Python Applications
- Dark Matter and Cosmic Phenomena
- Neutrino Physics Research
- Cosmology and Gravitation Theories
- Astrophysics and Cosmic Phenomena
- Gamma-ray bursts and supernovae
- Noncommutative and Quantum Gravity Theories
- Nuclear reactor physics and engineering
- Black Holes and Theoretical Physics
- Atomic and Subatomic Physics Research
- Nuclear Physics and Applications
- Distributed and Parallel Computing Systems
- Particle accelerators and beam dynamics
- Quantum Mechanics and Applications
- Scientific Computing and Data Management
- Laser-Plasma Interactions and Diagnostics
- Green IT and Sustainability
- Aerodynamics and Acoustics in Jet Flows
- Optical properties and cooling technologies in crystalline materials
- Fluid Dynamics and Turbulent Flows
- Graphite, nuclear technology, radiation studies
Indian Institute of Science Education and Research Pune
2024-2025
Indian Institute of Science Education and Research, Bhopal
2024-2025
University of Hyderabad
2024-2025
Indian Institute of Science Education and Research Mohali
2024-2025
Indian Institute of Science Education and Research Kolkata
2024-2025
Indian Institute of Science Education and Research, Tirupati
2024-2025
Indian Institute of Science Education and Research Berhampur
2024-2025
Université Clermont Auvergne
2024-2025
Clermont Université
2025
Institut National de Physique Nucléaire et de Physique des Particules
2025
Measurements of anisotropic flow coefficients (v_{n}) and their cross-correlations using two- multiparticle cumulant methods are reported in collisions pp at sqrt[s]=13 TeV, p-Pb a center-of-mass energy per nucleon pair sqrt[s_{NN}]=5.02 Xe-Xe sqrt[s_{NN}]=5.44 Pb-Pb TeV recorded with the ALICE detector. The multiplicity dependence v_{n} is studied very wide range from 20 to 3000 particles produced midrapidity region |η|<0.8 for transverse momentum 0.2<p_{T}<3.0 GeV/c. An ordering...
We report on the first femtoscopic measurement of baryon pairs, such as p-p, p-$\Lambda$ and $\Lambda$-$\Lambda$, measured by ALICE at Large Hadron Collider (LHC) in proton-proton collisions $\sqrt{s}$ = 7 TeV. This study demonstrates feasibility measurements pp ultrarelativistic energies. The femtoscopy method is employed to constrain hyperon-nucleon hyperon-hyperon interactions, which are still rather poorly understood. A new evaluate influence residual correlations induced decays...
This Letter presents the first experimental observation of attractive strong interaction between a proton and multistrange baryon (hyperon) Ξ^{-}. The result is extracted from two-particle correlations combined p-Ξ^{-}⊕p[over ¯]-Ξ[over ¯]^{+} pairs measured in p-Pb collisions at sqrt[s_{NN}]=5.02 TeV LHC with ALICE. correlation function compared prediction obtained assuming only an Coulomb standard deviation range [3.6, 5.3] found. Since significantly enhanced respect to prediction, presence...
We present a study of the inclusive charged-particle transverse momentum ($p_{\rm T}$) spectra as function multiplicity density at mid-pseudorapidity, ${\rm d}N_{\rm ch}/{\rm d}\eta$, in pp collisions $\sqrt{s}$ = 5.02 and 13 TeV covering kinematic range $|\eta|<0.8$ $0.15<p_{\rm{T}}<20$ GeV/$c$. The results are presented for events with least one charged particle $|\eta|<1$ (INEL$ >0$). $p_{\rm T}$ reported two estimators different pseudorapidity regions. normalized to that INEL $>0$ show...
The first measurement at the LHC of charge-dependent directed flow (${v}_{1}$) relative to spectator plane is presented for Pb-Pb collisions $\sqrt{{s}_{\mathrm{NN}}}=5.02\text{ }\text{ }\mathrm{TeV}$. Results are reported charged hadrons and ${\mathrm{D}}^{0}$ mesons transverse momentum intervals ${p}_{\mathrm{T}}>0.2\text{ }\mathrm{GeV}/c$ $3<{p}_{\mathrm{T}}<6\text{ in 5%--40% 10%--40% centrality classes, respectively. difference between positively negatively hadron ${v}_{1}$ has a...
This article reports measurements of the ${p}_{\mathrm{T}}$-differential inclusive jet cross section in $pp$ collisions at $\sqrt{s}=5.02\phantom{\rule{0.16em}{0ex}}\mathrm{TeV}$ and yield $\text{Pb-Pb}$ 0--10% central $\sqrt{{s}_{NN}}=5.02\phantom{\rule{0.16em}{0ex}}\mathrm{TeV}$. Jets were reconstructed midrapidity with ALICE tracking detectors electromagnetic calorimeter using anti-${k}_{\mathrm{T}}$ algorithm. For collisions, we report sections for resolution parameters $R=0.1--0.6$ over...
The prompt production of the charm baryon Λ_{c}^{+} and Λ_{c}^{+}/D^{0} ratios were measured at midrapidity with ALICE detector in pp p-Pb collisions sqrt[s_{NN}]=5.02 TeV. These new measurements show a clear decrease ratio increasing transverse momentum (p_{T}) both collision systems range 2<p_{T}<12 GeV/c, exhibiting similarities light-flavor baryon-to-meson p/π Λ/K_{S}^{0}. At low p_{T}, predictions that include additional color-reconnection mechanisms beyond leading-color approximation,...
A bstract The p T -differential production cross sections of prompt and non-prompt (produced in beauty-hadron decays) D mesons were measured by the ALICE experiment at midrapidity ( | y < 0 . 5) proton-proton collisions $$ \sqrt{s} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math> = 5 02 TeV. data sample used analysis corresponds to an integrated luminosity (19 3 ± 4) nb − 1 reconstructed from their decays → K π + ,...
A bstract The production of prompt D 0 , + and *+ mesons was measured at midrapidity (| y | < 0.5) in Pb–Pb collisions the centre-of-mass energy per nucleon–nucleon pair $$ \sqrt{s_{\mathrm{NN}}} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:msub> <mml:mi>s</mml:mi> <mml:mi>NN</mml:mi> </mml:msub> </mml:msqrt> </mml:math> = 5 . 02 TeV with ALICE detector LHC. were reconstructed via their hadronic decay channels yields central (0–10%) semicentral (30–50%)...
The p_{T}-differential production cross sections of prompt D^{0}, Λ_{c}^{+}, and Σ_{c}^{0,++}(2455) charmed hadrons are measured at midrapidity (|y|<0.5) in pp collisions sqrt[s]=13 TeV. This is the first measurement Σ_{c}^{0,++} hadronic collisions. Assuming same yield for three Σ_{c}^{0,+,++} isospin states, baryon-to-meson section ratios Σ_{c}^{0,+,++}/D^{0} Λ_{c}^{+}/D^{0} calculated transverse momentum (p_{T}) intervals 2<p_{T}<12 1<p_{T}<24 GeV/c. Values significantly larger than...
The interaction of $\Lambda$ and $\Sigma$ hyperons (Y) with nucleons (N) is strongly influenced by the coupled-channel dynamics. Due to small mass difference $\rm N \Lambda$ \Sigma$ systems, sizeable coupling strength \Sigma\leftrightarrow processes constitutes a crucial element in determination N$\Lambda$ interaction. In this letter we present most precise measurements on p$\Lambda$ pairs, from zero relative momentum up opening channel. correlation function space for...
We report a precise measurement of the J/ψ elliptic flow in Pb-Pb collisions at sqrt[s_{NN}]=5.02 TeV with ALICE detector LHC. The mesons are reconstructed midrapidity (|y|<0.9) dielectron decay channel and forward rapidity (2.5<y<4.0) dimuon channel, both down to zero transverse momentum. At rapidity, v_{2} is studied as function momentum centrality. A positive observed range 2<p_{T}<8 GeV/c three centrality classes confirms higher statistics our earlier results sqrt[s_{NN}]=2.76...
The ALICE Collaboration reports the measurement of semi-inclusive distributions charged-particle jets recoiling from a high-transverse momentum trigger hadron in p-Pb collisions at $\sqrt{s_{\rm NN}} =5.02$ TeV. Jets are reconstructed tracks using anti-$k_{\rm T}$ algorithm with resolution parameter $R=0.2$ and $0.4$. A data-driven statistical approach is used to correct uncorrelated background jet yield. Recoil reported for transverse $15<p_{\rm T,jet}^{\rm ch} <50$ GeV/$c$ compared various...
Measurements of $\rm{K}^{*}(892)^{0}$ and $\phi(1020)$ resonance production in Pb-Pb pp collisions at $\sqrt{s_{\rm{NN}}}$ = 5.02 TeV with the ALICE detector Large Hadron Collider are reported. The resonances measured midrapidity ($|y|$ $<$ 0.5) via their hadronic decay channels transverse momentum ($p_{\rm{T}}$) distributions obtained for various collision centrality classes up to $p_{\rm{T}}$ $=$ 20 GeV$/c$. $p_{\rm{T}}$-integrated yield ratio $\rm{K}^{*}(892)^{0}$$/$K shows significant...
The first measurement of the cross section for coherent J/$\psi$ photoproduction as a function $|t|$, square momentum transferred between incoming and outgoing target nucleus, is presented. data were measured with ALICE detector in ultra-peripheral Pb-Pb collisions at centre-of-mass energy per nucleon pair $\sqrt{s_{\rm NN}} = 5.02$ TeV produced central rapidity region $|y|<0.8$, which corresponds to small Bjorken-$x$ range $(0.3-1.4) \times 10^{-3}$. $|t|$-dependence not described by...
Abstract The production of $$\pi ^{\pm }$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>±</mml:mo> </mml:msup> </mml:math> , $$\mathrm{K}^{\pm <mml:mrow> <mml:mi>K</mml:mi> </mml:mrow> $$\mathrm{K}^{0}_{S}$$ <mml:msubsup> <mml:mi>S</mml:mi> <mml:mn>0</mml:mn> </mml:msubsup> $$\mathrm{K}^{*}(892)^{0}$$ <mml:mrow/> <mml:mo>∗</mml:mo> <mml:mo>(</mml:mo> <mml:mn>892</mml:mn> <mml:mo>)</mml:mo> $$\mathrm{p}$$ <mml:mi>p</mml:mi> $$\phi (1020)$$...
The production cross section of prompt ${\mathrm{\ensuremath{\Lambda}}}_{c}^{+}$ charm baryons was measured with the ALICE detector at LHC midrapidity in proton-proton ($pp$) and proton-lead ($p\text{--Pb}$) collisions a center-of-mass energy per nucleon pair $\sqrt{{s}_{\mathrm{NN}}}=5.02\phantom{\rule{0.16em}{0ex}}\mathrm{TeV}$. $\overline{\mathrm{\ensuremath{\Lambda}}}{}_{c}^{\ensuremath{-}}$ were reconstructed hadronic decay channels...
The differential invariant yield as a function of transverse momentum ($p_\mathrm{T}$) 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 $\sqrt{s_{\mathrm{NN}}}=5.02\text{ TeV}$ the $p_{\mathrm{T}}$ intervals 0.5-26 GeV/$c$ (0-10% 30-50%) 0.5-10 (60-80%). production cross section proton-proton (pp) $\sqrt{s}=5.02$ TeV well $0.5<p_\mathrm{T}<10$ it lies close to...
A bstract Short-range correlations between charged particles are studied via two-particle angular in pp collisions at $$ \sqrt{s} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math> = 13 TeV. The correlation functions measured as a function of the relative azimuthal angle ∆ φ and pseudorapidity separation η for pairs primary within interval | < 0 . 9 transverse-momentum range 1 p T 8 GeV/ c Near-side (|∆ 3) peak widths...
A bstract The inclusive J /ψ production in Pb–Pb collisions at the center-of-mass energy per nucleon pair $$ \sqrt{s_{\mathrm{NN}}} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:msub> <mml:mi>s</mml:mi> <mml:mi>NN</mml:mi> </mml:msub> </mml:msqrt> </mml:math> = 5 . 02 TeV, measured with ALICE detector CERN LHC, is reported. meson reconstructed via dimuon decay channel forward rapidity (2 < y 4) down to zero transverse momentum. suppression of yield respect...
The production of ${K}^{*}{(892)}^{0}$ and $\ensuremath{\phi}(1020)$ mesons in proton--proton $(pp)$ lead--lead (Pb--Pb) collisions at $\sqrt{{s}_{NN}}$ $=$ 5.02 TeV has been measured using the ALICE detector Large Hadron Collider (LHC). transverse momentum $({p}_{\mathrm{T}})$ distributions have midrapidity $(|y|<0.5)$ up to ${p}_{\mathrm{T}}\phantom{\rule{4pt}{0ex}}=$ 20 $\mathrm{GeV}/c$ inelastic $pp$ for several Pb--Pb collision centralities. centrality energy dependence average momenta...
Inclusive J/$\psi$ production is studied in p-Pb interactions at a centre-of-mass energy per nucleon-nucleon collision $\sqrt{s_{\rm NN}}=8.16$ TeV, using the ALICE detector CERN LHC. The meson reconstructed, via its decay to muon pair, rapidity intervals $2.03<y_{\rm {cms}}<3.53$ and $-4.46<y_{\rm {cms}}<-2.96$, where positive negative $y_{\rm {cms}}$ refer p-going Pb-going direction, respectively. transverse momentum coverage $p_{\rm T}<20$ GeV/$c$. In this paper, cms}$- T}$-differential...
The measurement of azimuthal correlations charged particles is presented for Pb-Pb collisions at $\sqrt{s_{\rm NN}}=$ 2.76 TeV and p-Pb 5.02 with the ALICE detector CERN Large Hadron Collider. These are measured second, third fourth order flow vector in pseudorapidity region $|\eta|<0.8$ as a function centrality transverse momentum $p_{\rm T}$ using two observables, to search evidence T}$-dependent fluctuations. For TeV, measurements indicate that fluctuations only present second vector....
In quantum scattering processes between two particles, aspects characterizing the strong and Coulomb forces can be observed in kinematic distributions of particle pairs. The sensitivity to interaction potential reaches a maximum at low relative momentum vanishing distance particles. Ultrarelativistic heavy-ion collisions LHC provide an abundant source many hadron species employed as measurement method parameters that is complementary experiments. This study confirms correlations particles...
The elliptic flow of electrons from beauty hadron decays at midrapidity ($|y|<0.8$) is measured in Pb-Pb collisions $\sqrt{{s}_{NN}}=5.02\text{ }\text{ }\mathrm{TeV}$ with the ALICE detector LHC. azimuthal distribution particles produced can be parametrized a Fourier expansion, which second harmonic coefficient represents flow, ${v}_{2}$. ${v}_{2}$ for first time transverse momentum (${p}_{T}$) range $1.3--6\text{ }\mathrm{GeV}/c$ centrality class 30%--50%. measurement beauty-hadron exploits...