CERN Accelerating science

ALICE Preprints

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2022-01-14
09:07
Recent precision W/Z measurements at the LHC (all relevant DY measurements), including full Run 2 and HL-LHC prospects / Cipriani, Marco (CERN) /ALICE,ATLAS,CMS and LHCB Collaborations
Precision measurements of W and Z boson cross sections and other properties are a powerful tool to validate theoretical calculations of the standard model, and are also essential in searches for new physics phenomena. These bosons are copiously produced in proton-proton collisions at the LHC, which permits several measurements to be performed differentially in many kinematic variables, often with negligible statistical uncertainties. [...]
CMS-CR-2021-295.- Geneva : CERN, 2021 - 11 p. Fulltext: PDF;
In : 32nd Rencontres de Blois on Particle Physics and Cosmology, Blois, Fr, 17 - 22 Oct 2021

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2022-01-05
04:01
Studies on tetrafluoropropene-CO2 based gas mixtures for the Resistive Plate Chambers of the ALICE Muon IDentifier / ALICE Collaboration
Due to their simplicity and comparatively low cost Resistive Plate Chambers are gaseous detectors widely used in high-energy and cosmic rays physics when large detection areas are needed. [...]
arXiv:2112.08899.
- 6 p.
Fulltext

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2021-12-29
04:01
Studying the mechanisms for strange particle production with ALICE at LHC / Sharma, Meenakshi (Jammu U.)
The main goal of the ALICE experiment is to study the physics of strongly interacting matter, focusing on the properties of the quark-gluon plasma (QGP). [...]
arXiv:2112.13258.
- 3 p.
Fulltext

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2021-12-28
04:02
Analysis of identified particle transverse momentum spectra produced in pp, p-Pb and Pb-Pb collisions at the LHC using Tsallis-Pareto-type distribution / Yang, Pei-Pin (Shanxi U.) ; Duan, Mai-Ying (Shanxi U.) ; Liu, Fu-Hu (Shanxi U.) ; Sahoo, Raghunath (Indian Inst. Tech., Indore ; CERN)
In the framework of a multi-source thermal model at the quark level, we have analyzed transverse momentum spectra of hadrons measured by the ALICE Collaboration in proton--proton ($pp$ or $p$--$p$) collisions at the center-of-mass energy of $\sqrt{s}=7$ and 13 TeV, proton--lead ($p$--Pb) collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV, and lead--lead (Pb--Pb) collisions at $\sqrt{s_{\rm NN}}=2.76$ TeV. [...]
arXiv:2112.13223.
- 23 p.
Fulltext

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2021-12-22
04:18
Testbeam performance results of bent ALPIDE Monolithic Active Pixel Sensors in view of the ALICE Inner Tracking System 3 / Blidaru, Bogdan-Mihail (Heidelberg U.)
The ALICE Inner Tracking System has been recently upgraded to a full silicon detector consisting entirely of Monolithic Active Pixel Sensors, arranged in seven concentric layers around the LHC beam pipe. [...]
arXiv:2112.10414.
- 4 p.
Fulltext

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2021-12-16
17:55
$\rho$ photoproduction in ALICE / Klein, Spencer R. (LBNL, NSD)
The $\rho^0$ is copiously photoproduced in ultra-peripheral heavy-ion collisions at the LHC. [...]
arXiv:2112.07827.
- 9 p.
Fulltext

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2021-12-16
10:21
Forward rapidity J/$\psi$ production as a function of charged-particle multiplicity in pp collisions at $\sqrt{s} =$ 5.02 and 13 TeV / Acharya, Shreyasi (Calcutta, VECC) ; Adamova, Dagmar (Rez, Nucl. Phys. Inst.) ; Adler, Alexander (Goethe U., Frankfurt, Inst. Inform.) ; Adolfsson, Jonatan (Lund U.) ; Aglieri Rinella, Gianluca (CERN) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) et al.
The production of J/$\psi$ is measured as a function of charged-particle multiplicity at forward rapidity in proton$-$proton (pp) collisions at center-of-mass energies $\sqrt{s} =$ 5.02 and 13 TeV. The J/$\psi$ mesons are reconstructed via their decay into dimuons in the rapidity interval (2.5 $< y <$ 4.0), whereas the charged-particle multiplicity density (\dnchdeta) is measured at midrapidity $(|\eta| < 1)$. [...]
arXiv:2112.09433; CERN-EP-2021-268.- Geneva : CERN, 2021 - 27 p. Draft (restricted): PDF; Fulltext: PDF;

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2021-12-10
12:24
Experimental QCD summary (ICHEP 2020) / d'Enterria, David (CERN) /ALICE,ATLAS,CMS and LHCB Collaborations
This writeup summarizes the main experimental studies of the strong interaction, theoretically described by quantum chromodynamics (QCD), that were presented during the ICHEP-2020 conference. The latest results, measured mostly in p-p collisions at the LHC, are categorized in seven broad topics: \begin{enumerate} \item Extractions of the strong coupling constant $\alpha_s(m_{\rm Z})$; \item Comparison of data to fixed-order (N$^{\rm n}$LO) perturbative QCD calculations; \item Determinations of parton distribution functions (PDFs); \item Comparison of data to resummed (N$^{\rm n}$LL) pQCD calculations; \item Parton showering and jet substructure analyses; \item Semi-hard (double parton interactions, multiparton interactions, hard diffraction), and soft (elastic and diffractive) QCD scatterings; \item Studies of parton hadronization in $e^+e^-$ and p-p collisions. \end{enumerate} Published in: PoS ICHEP2020 (2021) 012 (DOI:10.22323/1.390.0012)
CMS-CR-2020-266.- Geneva : CERN, 2020 - 13 p. Fulltext: PDF;
In : 40th International Conference on High Energy Physics (ICHEP), Prague, Czech Republic, 28 Jul - 6 Aug 2020

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2021-12-09
14:46
Neutral to charged kaon yield fluctuations in Pb$-$Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV / Acharya, Shreyasi (Calcutta, VECC) ; Adamova, Dagmar (Rez, Nucl. Phys. Inst.) ; Adler, Alexander (Goethe U., Frankfurt, Inst. Inform.) ; Adolfsson, Jonatan (Lund U.) ; Aglieri Rinella, Gianluca (CERN) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) et al. /ALICE
We present the first measurement of event-by-event fluctuations in the kaon sector in Pb$-$Pb collisions at $\sqrt {s_{\rm NN}}=$ 2.76 TeV with the ALICE detector at the LHC. The robust fluctuation correlator $\nu_{\rm dyn}$ is used to evaluate the magnitude of fluctuations of the relative yields of neutral and charged kaons, as well as the relative yields of charged kaons, as a function of collision centrality and selected kinematic ranges. [...]
arXiv:2112.09482; CERN-EP-2021-261.- Geneva : CERN, 2021 - 19 p. Draft (restricted): PDF; Fulltext: PDF;

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2021-12-08
15:09
Constraining hadronization mechanisms with $\Lambda_{\rm c}^+$/D$^0$ production ratios in Pb–Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV / Acharya, Shreyasi (Calcutta, VECC) ; Adamova, Dagmar (Rez, Nucl. Phys. Inst.) ; Adler, Alexander (Goethe U., Frankfurt, Inst. Inform.) ; Adolfsson, Jonatan (Lund U.) ; Aglieri Rinella, Gianluca (CERN) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) et al.
The production of prompt $\Lambda_{\rm c}^+$ baryons at midrapidity (|y| < 0.5) was measured in central (0–10%) and mid-central (30–50%) Pb–Pb collisions at the center-of-mass energy per nucleon–nucleon pair $\sqrt{s_{\rm NN}}$ = 5.02 TeV with the ALICE detector. The $\Lambda_{\rm c}^+$ production yield, the $\Lambda_{\rm c}^+$/D$^0$ production ratio, and the $\Lambda_{\rm c}^+$ nuclear modification factor $R_{\rm AA}$ are reported. [...]
arXiv:2112.08156; CERN-EP-2021-260.- Geneva : CERN, 2021 - 22 p. Draft (restricted): PDF; Fulltext: PDF;

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