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System size and energy dependence of the mean transverse momentum fluctuations at the LHC
/ Acharya, Shreyasi (Clermont-Ferrand U.) ; Agarwal, Apar (Calcutta, VECC) ; Aglieri Rinella, Gianluca (CERN) ; Aglietta, Luca (Turin U. ; INFN, Turin) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (Bologna U. ; INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) ; Ahuja, Ishaan (Kosice U.) et al.
Event-by-event fluctuations of the event-wise mean transverse momentum, $\langle p_{\mathrm{T}}\rangle$, of charged particles produced in proton-proton (pp) collisions at $\sqrt{s}$ = 5.02 TeV, Xe-Xe collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.44 TeV, and Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV are studied using the ALICE detector based on the integral correlator $\langle \langle \Delta p_{\rm T}\Delta p_{\rm T}\rangle \rangle $. The correlator strength is found to decrease monotonically with increasing produced charged-particle multiplicity measured at mid-rapidity in all three systems. [...]
arXiv:2411.09334; CERN-EP-2024-297.-
Geneva : CERN, 2024 - 28 p.
Draft (restricted): PDF; Fulltext: PDF;
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Measurements of differential two-particle number and transverse momentum correlation functions in pp collisions at $\sqrt{s}$ = 13 TeV
/ Acharya, Shreyasi (Clermont-Ferrand U.) ; Agarwal, Apar (Calcutta, VECC) ; Aglieri Rinella, Gianluca (CERN) ; Aglietta, Luca (Turin U. ; INFN, Turin) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (Bologna U. ; INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) ; Ahuja, Ishaan (Kosice U.) et al.
Differential two-particle normalized cumulants ($R_2$) and transverse momentum correlations ($P_2$) are measured as a function of the relative pseudorapidity and azimuthal angle difference $( \Delta \eta, \Delta \varphi )$ of charged particle pairs in minimum bias pp collisions at $\sqrt{\textit{s}}$ = 13 TeV. The measurements use charged hadrons in the pseudorapidity region of $|\eta| < 0.8$ and the transverse momentum range 0.2 $< \textit{p}_{\mathrm T} < $ 2.0 $\mathrm{GeV}/\textit{c}$ in order to focus on soft multiparticle interactions and to complement prior measurements of these correlation functions in p-Pb and Pb-Pb collisions. [...]
arXiv:2411.07059; CERN-EP-2024-271.-
Geneva : CERN, 2024 - 30 p.
Draft (restricted): PDF; Fulltext: PDF;
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Skewness and kurtosis of mean transverse momentum fluctuations at the LHC energies
/ ALICE Collaboration
The first measurements of skewness and kurtosis of mean transverse momentum ($\langle p_\mathrm{T}\rangle$) fluctuations are reported in Pb$-$Pb collisions at $\sqrt{s_\mathrm{NN}}$ $=$ 5.02 TeV, Xe$-$Xe collisions at $\sqrt{s_\mathrm{NN}}$ $=$ 5.44 TeV and pp collisions at $\sqrt{s} = 5.02$ TeV using the ALICE detector. The measurements are carried out as a function of system size $\langle \mathrm{d}N_\mathrm{ch}/\mathrm{d}\eta\rangle_{|\eta|<0.5}^{1/3}$, using charged particles with transverse momentum ($p_\mathrm{T}$) and pseudorapidity ($\eta$), in the range $0.2 < p_\mathrm{T} < 3.0$ GeV/$\it{c}$ and $|\eta| < 0.8$, respectively. [...]
arXiv:2308.16217; CERN-EP-2023-187.-
Geneva : CERN, 2024-02-23 - 14 p.
- Published in : Phys. Lett. B 850 (2024) 138541
Draft (restricted): PDF; Fulltext: 2308.16217 - PDF; Publication - PDF;
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Inclusive photon production at forward rapidities in pp and p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV
/ ALICE Collaboration
A study of multiplicity and pseudorapidity distributions of inclusive photons measured in pp and p-Pb collisions at a center-of-mass energy per nucleon-nucleon collision of $\sqrt{s_{\rm NN}}$ = 5.02 TeV using the ALICE detector in the forward pseudorapidity region $2.3 < \eta_{\rm lab} < 3.9$ is presented. Measurements in p-Pb collisions are reported for two beam configurations in which the directions of the proton and lead ion beam were reversed. [...]
arXiv:2303.00590; CERN-EP-2023-026.-
Geneva : CERN, 2023-07-25 - 35 p.
- Published in : Eur. Phys. J. C 83 (2023) 661
Draft (restricted): PDF; Fulltext: document - PDF; 2303.00590 - PDF;
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The ALICE experiment: a journey through QCD
/ ALICE Collaboration
The ALICE experiment was proposed in 1993, to study strongly interacting matter at extreme energy densities via a comprehensive investigation of nuclear collisions at the LHC. Its physics programme initially focused on the determination of the properties of the Quark-Gluon Plasma (QGP), a deconfined state of quarks and gluons and was extended along the years, covering a diverse ensemble of observables related to Quantum Chromodynamics (QCD), the theory of strong interactions. [...]
arXiv:2211.04384; CERN-EP-2022-227.-
Geneva : CERN, 2024-08-14 - 221 p.
- Published in : Eur. Phys. J. C 84 (2024) 813
Draft (restricted): PDF; Fulltext: 2211.04384 - PDF; document - PDF;
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ANUINDRA: A wide dynamic range FEE ASIC for a silicon–tungsten electromagnetic calorimeter
/ Mukhopadhyay, Sourav (Bhabha Atomic Res. Ctr. ; HBNI, Mumbai) ; Chandratre, Vinay B (Bhabha Atomic Res. Ctr. ; HBNI, Mumbai) ; Muhuri, Sanjib (Calcutta, VECC ; HBNI, Mumbai) ; Singaraju, Rama N (Calcutta, VECC) ; Saini, Jogender (Calcutta, VECC) ; Nayak, Tapan K (Calcutta, VECC ; NISER, Jatni ; CERN)
A wide dynamic range (ratio of maximum detectable signal to noise floor) front end electronics (FEE) readout ASIC ANUINDRA has been developed in 0.35μm standard N-well CMOS technology for the prototype forward calorimeter (FOCAL), a silicon–tungsten (Si–W) electromagnetic (EM) calorimeter, proposed as part of the ALICE upgrade at CERN. It is a 16 channel pulse processing ASIC with a multiplexed serial output along with all the individual channel’s responses available as output pins. [...]
2022 - 8 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1040 (2022) 167253
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A wide swing charge sensitive amplifier for a prototype Si–W EM calorimeter
/ Mukhopadhyay, Sourav (Bhabha Atomic Res. Ctr. ; HBNI, Mumbai) ; Chandratre, Vinay B. (Bhabha Atomic Res. Ctr. ; HBNI, Mumbai) ; Muhuri, Sanjib (Calcutta, VECC ; HBNI, Mumbai) ; Singaraju, Rama N. (Calcutta, VECC) ; Saini, Jogender (Calcutta, VECC) ; Nayak, Tapan K. (Calcutta, VECC ; NISER, Jatni ; CERN)
A wide swing charge sensitive amplifier (CSA) has been developed, as a part of a front-end electronics (FEE) readout ASIC, for a prototype silicon tungsten (Si-W) based electromagnetic (EM) calorimeter. The CSA, designed in 0.35 $\mu$m N-well CMOS technology using 5V MOS transistors, has a wide linear operating range of 2.6 pC w.r.t the input charge with a power dissipation of 2.3 mW. [...]
arXiv:2201.07410.-
2022-04-01 - 8 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1028 (2022) 166367
Fulltext: PDF;
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