CERN Accelerating science

ALICE Preprints

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2015-07-30
07:51
Study of cosmic ray events with high muon multiplicity using the ALICE detector at the CERN Large Hadron Collider / ALICE Collaboration
ALICE is one of four large experiments at the CERN Large Hadron Collider near Geneva, specially designed to study particle production in ultra-relativistic heavy-ion collisions. [...]
arXiv:1507.07577 ; CERN-PH-EP-2015-196.
- 2015. - 22 p.
Preprint

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2015-07-15
15:02
Search for weakly decaying $\overline{\Lambda\mathrm{n}}$ and $\Lambda\Lambda $ exotic bound states in central Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV / ALICE Collaboration
We present results of a search for two hypothetical strange dibaryon states, i.e. [...]
arXiv:1506.07499 ; CERN-PH-EP-2015-069.
- 2015. - 19 p.
Preprint - Full text

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2015-07-14
08:36
Elliptic flow of muons from heavy-flavour hadron decays at forward rapidity in Pb-Pb collisions at $\sqrt{s_{\rm NN}}=2.76$ TeV / ALICE Collaboration
The elliptic flow, $v_{2}$, of muons from heavy-flavour hadron decays at forward rapidity ($2.5 < y < 4$) is measured in Pb--Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV with the ALICE detector at the LHC. [...]
arXiv:1507.03134 ; CERN-PH-EP-2015-173.
- 2015. - 25 p.
Preprint - Full text

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2015-06-30
08:11
Event shape engineering for inclusive spectra and elliptic flow in Pb-Pb collisions at sqrt(sNN) = 2.76 TeV / ALICE, CERN /ALICE
We report on results obtained by the ALICE Collaboration with the Event Shape Engineering (ESE) technique applied to Pb-Pb collisions at sqrt(sNN) = 2.76 TeV. By selecting events in the same centrality interval, but with very different average flow, different initial state conditions can be studied. [...]
CERN-PH-EP-2015-171.- Geneva : CERN, 2015 Draft (restricted): PDF; Fulltext: PDF;

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2015-06-30
08:08
$^{3}_{\Lambda}\mathrm H$ and $^{3}_{\bar{\Lambda}} \overline{\mathrm H}$ production in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV / ALICE Collaboration
The production of the hypertriton nuclei $^{3}_{\Lambda}\mathrm H$ and $^{3}_{\bar{\Lambda}} \overline{\mathrm H}$ has been measured for the first time in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV with the ALICE experiment at LHC energies. [...]
arXiv:1506.08453 ; CERN-PH-EP-2015-105.
- 2015. - 21 p.
Preprint - Full text

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2015-06-19
10:04
Coherent $\psi(2S)$ photo-production in ultra-peripheral Pb-Pb collisions at $\sqrt{s_{\rm NN}}$= 2.76 TeV / ALICE Collaboration, CERN /ALICE
The ALICE Collaboration has performed the first measurement of the coherent $\psi(2S)$ photo-production cross section in ultra-peripheral Pb-Pb collisions at the LHC. This charmonium excited state is reconstructed via the $\psi(2S)\rightarrow l^+l^-$ and $\psi(2S)\rightarrow{\rm J}/\psi \pi^+\pi^-$ decays, where the J/$\psi$ decays into two leptons. [...]
CERN-PH-EP-2015-156; arXiv:1508.05076.- Geneva : CERN, 2015 - 18. Draft (restricted): PDF; Fulltext: CERN-PH-EP-2015-156 - PDF; arXiv:1508.05076 - PDF; External link: Fulltext

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2015-06-17
17:52
Centrality dependence of the nuclear modification factor of charged pions, kaons, and protons in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV / ALICE Collaboration
Transverse momentum ($p_{\rm{T}}$) spectra of pions, kaons, and protons up to $p_{\rm{T}} = 20$ GeV/$c$ have been measured in Pb-Pb collisions at $\sqrt{s_{\rm NN}} = 2.76$ TeV using the ALICE detector for six different centrality classes covering 0-80%. The proton-to-pion and the kaon-to-pion ratios both show a distinct peak at $p_{\rm{T}} \approx 3$ GeV/$c$ in central Pb-Pb collisions that decreases towards more peripheral collisions. [...]
arXiv:1506.07287; CERN-PH-EP-2015-152.- Geneva : CERN, 2015 - 44 p. Draft (restricted): PDF; Fulltext: PDF; Preprint: PDF; External link: Preprint

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2015-06-16
22:36
Centrality dependence of high-$p_{\rm T}$ D meson suppression in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV / ALICE Collaboration
The nuclear modification factor, $R_{\rm AA}$, of the prompt charmed mesons ${\rm D^0}$, ${\rm D^+}$ and ${\rm D^{*+}}$, and their antiparticles, was measured with the ALICE detector in Pb-Pb collisions at a centre-of-mass energy $\sqrt{s_{\rm NN}} = 2.76$ TeV in two transverse momentum intervals, $5<p_{\rm T}<8$ GeV/$c$ and $8<p_{\rm T}<16$ GeV/$c$, and in six collision centrality classes. [...]
arXiv:1506.06604 ; CERN-PH-EP-2015-151.
- 2015. - 21 p.
Draft (restricted) - Preprint - Full text

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2015-06-15
10:38
Measurement of jet quenching with semi-inclusive hadron-jet distributions in central Pb-Pb collisions at ${\sqrt{\bf{s}_{\mathrm {\bf{NN}}}}}$ = 2.76 TeV / ALICE Collaboration
We report the measurement of a new observable of jet quenching in central Pb-Pb collisions at $\sqrt{s_{\rm NN}} = 2.76$ TeV, based on the semi-inclusive rate of charged jets recoiling from a high transverse momentum (high-$p_{\rm T}$) charged hadron trigger. [...]
arXiv:1506.03984 ; CERN-PH-EP-2015-136.
- 2015. - 37 p.
Preprint - Full text

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2015-06-04
17:35
Centrality dependence of pion freeze-out radii in Pb-Pb collisions at sqrt(sNN) =2.76 TeV / ALICE, CERN /ALICE
We report on the measurement of freeze-out radii for pairs of identical-charge pions measured in Pb-Pb collisions at sqrt(sNN) =2.76 TeV as a function of collision centrality and the average transverse momentum of the pair kT . Three-dimensional sizes of the system (femtoscopic radii), as well as direction-averaged one-dimensional radii are extracted. [...]
CERN-PH-EP-2015-140.- Geneva : CERN, 2015 Draft (restricted): PDF; Fulltext: PDF;

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