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ALICE Preprints

Ultimi arrivi:
2021-05-07
16:45
Measurement of the cross sections of $\rm \Xi_{c}^{0}$ and $\rm \Xi_{c}^{+}$ baryons and of the branching-fraction ratio BR($\rm \Xi_{c}^{0} \rightarrow \Xi^{-}e^+ \nu$)/BR($\rm \Xi_{c}^{0} \rightarrow \Xi^{-} \pi^{+}$) in pp collisions at $\sqrt{s}$ = 13 TeV / ALICE Collaboration, CERN
The $p_{\rm T}$-differential cross sections of prompt charm-strange baryons $\rm \Xi_{c}^{0}$ and $\rm \Xi_{c}^{+}$ were measured at midrapidity (|y| < 0.5) in proton–proton (pp) collisions at a centre-of-mass energy $\sqrt{s}$ = 13 TeV with the ALICE detector at the LHC. The $\rm \Xi_{c}^{0}$ baryon was reconstructed via both the semileptonic decay ($\rm \Xi_{c}^{0} \rightarrow \Xi^{-}e^+ \nu$) and the hadronic decay ($\rm \Xi_{c}^{0} \rightarrow \Xi^{-} \pi^{+}$) channels. [...]
CERN-EP-2021-084.- Geneva : CERN, 2021 Draft (restricted): PDF;

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2021-05-07
10:42
Investigating the role of strangeness in baryon-antibaryon annihilation at the LHC / ALICE Collaboration, CERN
Annihilation dynamics plays a fundamental role in the baryon-antibaryon interaction ($\rm{B}\mbox{-}\rm{\overline{B}}$) at low-energy and its strength and range are crucial in the assessment of possible baryon bound states. Experimental data on annihilation cross sections are available for the $\rm{p}\mbox{-}\rm{\overline{p}}$ system but not in the low relative momentum region. [...]
CERN-EP-2021-083.- Geneva : CERN, 2021 Draft (restricted): PDF;

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2021-05-06
22:01
First measurements of $N$-subjettiness in central Pb-Pb collisions at $\sqrt{s_{\rm NN}} = 2.76$ TeV / ALICE Collaboration, CERN
The ALICE Collaboration reports the first fully-corrected measurements of the $N$-subjettiness observable for track-based jets in heavy-ion collisions. This study is performed using data recorded in pp and Pb$-$Pb collisions at centre-of-mass energies of $\sqrt{s} = 7$ TeV and $\sqrt{s_{\rm NN}} = 2.76$ TeV, respectively. [...]
CERN-EP-2021-082.- Geneva : CERN, 2021 - 24. Draft (restricted): PDF;

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2021-05-03
13:49
Inclusive, prompt and non-prompt $\rm J/\psi$ production at midrapidity in p$-$Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV / ALICE Collaboration, CERN
A measurement of inclusive, prompt, and non-prompt ${\rm J}/\psi$ production in p$-$Pb collisions at a nucleon--nucleon centre-of-mass energy $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV is presented. The ${\rm J}/\psi$ mesons are reconstructed in the dielectron decay channel at midrapidity down to a transverse momentum $p_{\rm T} = 0$. [...]
CERN-EP-2021-077.- Geneva : CERN, 2021 - 16. Draft (restricted): PDF;

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2021-04-12
14:20
Energy dependence of $\phi$ meson production at forward rapidity in pp collisions at the LHC / 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
The production of mesons has been studied in pp collisions at LHC energies with the ALICE detector via the dimuon decay channel in the rapidity region 2.5 $< y <$ 4. Measurements of the differential cross section d$^2$/d$y$d$p_{\rm T}$ are presented as a function of the transverse momentum ($p_{\rm T}$) at the center-of-mass energies $\sqrt{s}$ = 5.02, 8 and 13 TeV and compared with the ALICE results at midrapidity. [...]
arXiv:2105.00713; CERN-EP-2021-057.- Geneva : CERN, 2021 - 22 p. Draft (restricted): PDF; Fulltext: PDF;

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2021-04-01
14:17
Nuclear modification factor of light neutral-meson spectra up to high transverse momentum in p-Pb collisions at $\mathbf{\sqrt{s_{NN}}}$ = 8.16 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
Neutral pion and $\eta$ meson production cross sections were measured up to unprecedentedly high transverse momenta ($p_{\rm T}$) in p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 8.16 TeV. The mesons were reconstructed via their two-photon decay channel in the rapidity interval $-1.3< y <0.3$ in the ranges of $0.4<p_{\rm T}<200$~GeV/$c$ and $1.0<p_{\rm T}<50$ GeV/$c$, respectively. [...]
arXiv:2104.03116; CERN-EP-2021-053.- Geneva : CERN, 2021 - 28 p. Draft (restricted): PDF; Fulltext: PDF;

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2021-03-29
15:38
Exploring the N$\Lambda$-N$\Sigma$ coupled system with high precision correlation techniques at the LHC / 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 interaction of $\Lambda$ and $\Sigma$ hyperons (Y) with nucleons (N) is strongly influenced by the coupled-channel dynamics. Due to the small mass difference of the $\rm N \Lambda$ and $\rm N \Sigma$ systems, the coupling strength of the $\rm N \Sigma\leftrightarrow N \Lambda$ processes is non-negligible and constitutes a crucial element in the determination of the N$\Lambda$ interaction. [...]
arXiv:2104.04427; CERN-EP-2021-051.- Geneva : CERN, 2021 - 17 p. Draft (restricted): PDF; Fulltext: PDF;

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2021-03-28
04:04
Recent bottomonium measurements in pp, p-Pb and Pb-Pb collisions at forward rapidity with ALICE at the LHC / Shaikh, Wadut (Saha Inst.)
In ultrarelativistic nucleus-nucleus collisions, a deconfined state of strongly interacting matter is thought to be produced, commonly known as the quark--gluon plasma (QGP). [...]
arXiv:2103.13685.
- 4 p.
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2021-03-22
13:39
Production of $\Lambda$ and ${\rm K}^{0}_{\rm S}$ in jets in p-Pb collisions at $\sqrt{s_{\rm NN}} = 5$ TeV and pp collisions at $\sqrt{s} = 7$ TeV / ALICE Collaboration, CERN
The production of $\Lambda$ baryons and ${\rm K}^{0}_{\rm S}$ mesons (${\rm V}^{0}$ particles) was measured in p-Pb collisions at $\sqrt{s_{\rm NN}} = 5$ TeV and pp collisions at $\sqrt{s} = 7$ TeV with ALICE at the LHC. The production of these strange particles is studied separately for particles associated with hard scatterings and the underlying event to shed light on the baryon-to-meson ratio enhancement observed at intermediate transverse momentum ($p_{\rm T}$) in high multiplicity pp and p-Pb collisions. [...]
CERN-EP-2021-048.- Geneva : CERN, 2021 - 20. Draft (restricted): PDF;

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2021-03-20
04:13
Inclusive photon production at forward rapidities using PMD in p-Pb collisions at $\sqrt{\it{s}_{\rm{NN}}} = 8.16$ TeV with ALICE / Bhat, Mohammad Asif (Bose Inst., Kolkata)
We report on the performance studies of two correction methods, namely the efficiency-purity method and the Bayesian unfolding method applied to the pseudorapidity distribution of photons. [...]
arXiv:2103.08946.
- 4 p.
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