CERN Accelerating science

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1.
Measurement of electrons from beauty hadron decays in pp collisions at $\sqrt{s}$ = 7 TeV / ALICE Collaboration
The production cross section of electrons from semileptonic decays of beauty hadrons was measured at mid-rapidity (|y| < 0.8) in the transverse momentum range 1 < pt < 8 Gev/c with the ALICE experiment at the CERN LHC in pp collisions at a center of mass energy $\sqrt{s}$ = 7 TeV using an integrated luminosity of 2.2 nb$^{-1}$. Electrons from beauty hadron decays were selected based on the displacement of the decay vertex from the collision vertex. [...]
arXiv:1208.1902; CERN-PH-EP-2012-229.- 2013-04-10 - 15 p.
Article from SCOAP3: PDF; Corrigendum: PDF; Elsevier Open Access article: PDF; Fulltext: PDF; External link: Preprint
2.
J/$\psi$ suppression at forward rapidity in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV / ALICE Collaboration
The ALICE experiment has measured the inclusive J/ψ production in Pb-Pb collisions at √sNN = 2.76 TeV down to pt = 0 in the rapidity range 2.5 < y < 4. A suppression of the inclusive J/ψ yield in Pb-Pb is observed with respect to the one measured in pp collisions scaled by the number of binary nucleon-nucleon collisions. [...]
arXiv:1202.1383; CERN-PH-EP-2012-012; CERN-PH-EP-2012-012.- Geneva : CERN, 2012 - 16 p. - Published in : Phys. Rev. Lett. 109 (2012) 072301 APS Open Access article: PDF; Draft (restricted): PDF; Fulltext: PDF; External link: DURHAM
3.
Multiplicity dependence of two-particle azimuthal correlations in pp collisions at the LHC / ALICE Collaboration
We present the measurements of particle pair yields per trigger particle obtained from di-hadron azimuthal correlations in pp collisions at $\sqrt{s}$=0.9, 2.76, and 7 TeV recorded with the ALICE detector. The yields are studied as a function of the charged particle multiplicity. [...]
arXiv:1307.1249; CERN-PH-EP-2013-107; CERN-PH-EP-2013-107.- Geneva : CERN, 2013 - 42 p. - Published in : JHEP 09 (2013) 049 Fulltext: arXiv:1307.1249 - PDF; CERN-PH-EP-2013-107 - PDF; Springer Open Access article: PDF; External link: Preprint
4.
Alignment of the ALICE Inner Tracking System with cosmic-ray tracks / ALICE Collaboration
ALICE (A Large Ion Collider Experiment) is the LHC (Large Hadron Collider) experiment devoted to investigating the strongly interacting matter created in nucleus-nucleus collisions at the LHC energies. The ALICE ITS, Inner Tracking System, consists of six cylindrical layers of silicon detectors with three different technologies; in the outward direction: two layers of pixel detectors, two layers each of drift, and strip detectors. [...]
arXiv:1001.0502.- 2010 - 37 p. - Published in : JINST 5 (2010) P03003 Fulltext: PDF; IOP Open Access article: PDF; External link: Preprint
5.
First proton-proton collisions at the LHC as observed with the ALICE detector : measurement of the charged particle pseudorapidity density at $\sqrt{s}$ = 900 GeV / ALICE Collaboration
On 23rd November 2009, during the early commissioning of the CERN Large Hadron Collider (LHC), two counter-rotating proton bunches were circulated for the first time concurrently in the machine, at the LHC injection energy of 450 GeV per beam. Although the proton intensity was very low, with only one pilot bunch per beam, and no systematic attempt was made to optimize the collision optics, all LHC experiments reported a number of collision candidates. [...]
arXiv:0911.5430.- 2010 - 15 p. - Published in : Eur. Phys. J. C 65 (2010) 111 Fulltext: 10052_2009_1227_OnlinePDF - PDF; arXiv:0911.5430 - PDF; Springer Open Access article: PDF; External link: DURHAM
6.
J/$\psi$ Elliptic Flow in Pb-Pb Collisions at $\sqrt{s_{NN}}$=2.76 TeV / ALICE Collaboration
We report on the first measurement of inclusive J/$\psi$ elliptic flow, $v_2$, in heavy-ion collisions at the LHC. The measurement is performed with the ALICE detector in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV in the rapidity range 2.5 < y < 4.0. [...]
arXiv:1303.5880; CERN-PH-EP-2013-042; CERN-PH-EP-2013-042.- Geneva : CERN, 2013-10-17 - 11 p. - Published in : Phys. Rev. Lett. 111 (2013) 162301 APS Open Access article: PDF; Draft (restricted): PDF; Fulltext: CERN-PH-EP-2013-042 - PDF; arXiv:1303.5880 - PDF; External link: Preprint
7.
Measurement of charm production at central rapidity in proton-proton collisions at $\sqrt{s}$ = 2.76 TeV / ALICE Collaboration
The pt-differential production cross sections of the prompt (B feed-down subtracted) charmed mesons D0, D+, and D*+ in the rapidity range |y| < 0.5, and for transverse momentum 1 < pt < 12 GeV/c, were measured in proton–proton collisions at sqrt(s) = 2.76 TeV with the ALICE detector at the Large Hadron Collider. The analysis exploited the hadronic decays D0 -> K- pi+, D+ -> K- pi+ pi+, D*+ -> D0 pi+, and their charge conjugates, and was performed on a L_int = 1.1 nb^-1 event sample collected in 2011 with a minimum-bias trigger. [...]
arXiv:1205.4007; CERN-PH-EP-2012-133; CERN-PH-EP-2012-133.- Geneva : CERN, 2012 - 21 p. - Published in : JHEP 07 (2012) 191 Draft (restricted): PDF; Fulltext: CERN-PH-EP-2012-133 - PDF; arXiv:1205.4007 - PDF; Springer Open Access article: PDF; External link: Preprint
8.
Centrality dependence of $\pi$, K, p production in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV / ALICE Collaboration
In this paper measurements are presented of $\pi^\pm, K^\pm$, p and $\bar p$ production at mid-rapidity (|y| < 0.5), in Pb–Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV as a function of centrality. The measurement covers the transverse momentum ($p_T$) range from 100, 200, 300 MeV/c up to 3, 3, 4.6 GeV/c, for $\pi$, K, and p respectively. [...]
arXiv:1303.0737; CERN-PH-EP-2013-019; CERN-PH-EP-2013-019.- Geneva : CERN, 2013-10-15 - 23 p. - Published in : Phys. Rev. C 88 (2013) 044910 APS Open Access article: PDF; Draft (restricted): PDF; Fulltext: arXiv:1303.0737 - PDF; CERN-PH-EP-2013-019 - PDF; External link: Preprint
9.
Pion, Kaon, and Proton Production in Central Pb--Pb Collisions at $\sqrt{s_{NN}}$ = 2.76 TeV / ALICE Collaboration
In this Letter we report the first results on $\pi^\pm$, K$^\pm$, p and pbar production at mid-rapidity (|y|<0.5) in central Pb-Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV, measured by the ALICE experiment at the LHC. The pT distributions and yields are compared to previous results at $\sqrt{s_{NN}}$ = 200 GeV and expectations from hydrodynamic and thermal models. [...]
arXiv:1208.1974; CERN-PH-EP-2012-230; CERN-PH-EP-2012-230.- Geneva : CERN, 2012 - 15 p. - Published in : Phys. Rev. Lett. 109 (2012) 252301 APS Open Access article: PDF; Draft (restricted): PDF; Fulltext: arXiv:1208.1974 - PDF; CERN-PH-EP-2012-230 - PDF; External link: Rivet analyses reference
10.
Transverse Momentum Distribution and Nuclear Modification Factor of Charged Particles in p-Pb Collisions at $\sqrt{s_{NN}}$ = 5.02 TeV / ALICE Collaboration
The transverse momentum ($p_T$) distribution of primary charged particles is measured in non single-diffractive p-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV with the ALICE detector at the LHC. The $p_T$ spectra measured near central rapidity in the range 0.5 < $p_T$ < 20 GeV/c exhibit a weak pseudorapidity dependence. [...]
arXiv:1210.4520; CERN-PH-EP-2012-306; CERN-PH-EP-2012-306.- Geneva : CERN, 2013-02-21 - 11 p. - Published in : Phys. Rev. Lett. 110 (2013) 082302 APS Open Access article: PDF; Draft (restricted): PDF; Fulltext: arXiv:1210.4520 - PDF; CERN-PH-EP-2012-306 - PDF; External link: DURHAM

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