Viser treff 1-20 av 33

• #### ALICE measurement of the $J/\psi$ nuclear modification factor at mid-rapidity in Pb–Pb collisions at $\sqrt{{s}_{NN}}=$ 5.02 TeV ﻿

(Peer reviewed; Journal article, 2017-11)
ALICE at the LHC provides unique capabilities to study charmonium production at low transverse momenta ( p T ). At central rapidity, ( |y|<0.8 ), ALICE can reconstruct J/ ψ via their decay into two electrons down to zero ...
• #### Anisotropic flow of inclusive and identified particles in Pb–Pb collisions at $\sqrt{{s}_{NN}}=$ 5.02 TeV with ALICE ﻿

(Peer reviewed; Journal article, 2017-11)
Anisotropic flow measurements constrain the shear $(\eta/s)$ and bulk $\zeta/s$ viscosity of the quark-gluon plasma created in heavy-ion collisions, as well as give insight into the initial state of such collisions ...
• #### Azimuthally differential pion femtoscopy relative to the second and thrid harmonic in Pb-Pb 2.76 TeV collisions from ALICE ﻿

(Peer reviewed; Journal article, 2017-11)
Azimuthally differential femtoscopic measurements, being sensitive to spatio-temporal characteristics of the source as well as to the collective velocity fields at freeze-out, provide very important information on the ...
• #### Charged-particle multiplicity distributions over a wide pseudorapidity range in proton-proton collisions at √s = 0.9, 7, and 8 TeV ﻿

(Peer reviewed; Journal article, 2017-12-09)
We present the charged-particle multiplicity distributions over a wide pseudorapidity range (−3.4<η<5.0 ) for pp collisions at √s=0.9,7 , and 8 TeV at the LHC. Results are based on information from the Silicon Pixel Detector ...
• #### Charmonium production in Pb–Pb and p–Pb collisions at forward rapidity measured with ALICE ﻿

(Peer reviewed; Journal article, 2017-11)
The ALICE collaboration has measured the inclusive charmonium production at forward rapidity in Pb–Pb and p–Pb collisions at sNN=5.02TeV and sNN=8.16TeV , respectively. In Pb–Pb collisions, the J/ ψ and ψ (2S) nuclear ...
• #### D-meson azimuthal anisotropy in mid-central Pb-Pb collisions at $\mathbf{\sqrt{s_{\rm NN}}=5.02}$ TeV ﻿

(Peer reviewed; Journal article, 2018-03)
The azimuthal anisotropy coefficient $v_2$ of prompt D\)^0\), D\)^+\), D\)^{*+}\) and D$_s^+$ mesons was measured in mid-central (30-50% centrality class) Pb-Pb collisions at a centre-of-mass energy per nucleon pair ...
• #### D-meson nuclear modification factor and elliptic flow measurements in Pb–Pb collisions at $\sqrt {s_{NN}}$ = 5.02TeV with ALICE at the LHC ﻿

(Peer reviewed; Journal article, 2017-11)
ALICE measured the nuclear modification factor $R_{AA}$ and elliptic flow $\nu_{2}$ of D mesons $D^{0}$. $D^{+}$. $D^{⁎+}$ and $D^{s+}$ in semi-central Pb–Pb collisions at $\sqrt{s_{NN}} =5.02$ TeV. The ...
• #### Direct photon measurements in pp and Pb-Pb collisions with the ALICE experiment ﻿

(Peer reviewed; Journal article, 2017-11)
Direct photon production in heavy-ion collisions provides a valuable set of observables to study the hot QCD medium. The direct photons are produced at different stages of the collision and escape the medium unaffected. ...
• #### Electroweak boson production in p–Pb and Pb–Pb collisions at $\sqrt{s_\mathrm{NN}}=5.02$ TeV with ALICE ﻿

(Peer reviewed; Journal article, 2017-11)
W and Z bosons are massive weakly-interacting particles, insensitive to the strong interaction. They provide therefore a medium-blind probe of the initial state of the heavy-ion collisions. The final results for the W and ...
• #### Event activity-dependence of jet production in p-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV measured with semi-inclusive hadron+jet correlations by ALICE ﻿

(Peer reviewed; Journal article, 2017-11)
We report measurement of the semi-inclusive distribution of charged-particle jets recoiling from a high transverse momentum $p_{\rm T}$ hadron trigger, for p-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV, in p-Pb ...
• #### Exploring jet substructures with jet shapes in ALICE ﻿

(Peer reviewed; Journal article, 2017-11)
The characterization of the jet substructure can give insight into the microscopic nature of the modification induced on high-momentum partons by the Quark-Gluon Plasma that is formed in ultra-relativistic heavy-ion ...
• #### Highlights of experimental results from ALICE ﻿

(Peer reviewed; Journal article, 2017-11)
Highlights of recent results from the ALICE collaboration are presented. The collision systems investigated are Pb–Pb, p–Pb, and pp, and results from studies of bulk particle production, azimuthal correlations, open and ...
• #### Investigating the Role of Coherence Effects on Jet Quenching in Pb-Pb Collisions at $\sqrt{s_{NN}} =2.76$ TeV using Jet Substructure ﻿

(Peer reviewed; Journal article, 2017-11)
We report measurements of two jet shapes, the ratio of 2-Subjettiness to 1-Subjettiness $\it{\tau_{2}}/\it{\tau_{1}}$ and the opening angle between the two axes of the 2-Subjettiness jet shape, which is obtained by ...
• #### Investigations of anisotropic collectivity using multi-particle correlations in pp, p-Pb and Pb-Pb collisions ﻿

(Peer reviewed; Journal article, 2017-11)
Two- and multi-particle azimuthal correlations have proven to be an excellent tool to probe the properties of the strongly interacting matter created in heavy-ion collisions. Recently, the results obtained for multi-particle ...
• #### Jet-hadron correlations relative to the event plane at the LHC with ALICE ﻿

(Peer reviewed; Journal article, 2017-11)
In ultra relativistic heavy-ion collisions at the Large Hadron Collider (LHC), conditions are met to produce a hot, dense and strongly interacting medium known as the Quark Gluon Plasma (QGP). Quarks and gluons from incoming ...
• #### Kaon femtoscopy in Pb-Pb collisions at $\sqrt{s_{\rm{NN}}}$ = 2.76 TeV ﻿

(Peer reviewed; Journal article, 2017-12-21)
We present the results of three-dimensional femtoscopic analyses for charged and neutral kaons recorded by ALICE in Pb-Pb collisions at $\sqrt{s_{\rm{NN}}}$ = 2.76 TeV. Femtoscopy is used to measure the space-time ...
• #### Linear and non-linear flow modes in Pb-Pb collisions at $\sqrt{s_{\rm NN}} =$ 2.76 TeV ﻿

(Peer reviewed; Journal article, 2017-10)
The second and the third order anisotropic flow, $V_{2}$ and $V_3$. are mostly determined by the corresponding initial spatial anisotropy coefficients, $\varepsilon_{2}$ and $\varepsilon_{3}$. in the initial density ...
• #### Longitudinal asymmetry and its effect on pseudorapidity distributions in Pb–Pb collisions at √sNN = 2.76 TeV ﻿

(Peer reviewed; Journal article, 2018-03-22)
First results on the longitudinal asymmetry and its effect on the pseudorapidity distributions in Pb–Pb collisions at √sNN = 2.76 TeV at the Large Hadron Collider are obtained with the ALICE detector. The longitudinal ...
• #### Measurement of $J/\psi$ production as a function of event multiplicity in pp collisions at $\sqrt{s} = 13\,\mathrm{TeV}$ with ALICE ﻿

(Peer reviewed; Journal article, 2017-11)
The availability at the LHC of the largest collision energy in pp collisions allows a significant advance in the measurement of $J/\psi$ production as function of event multiplicity. The interesting relative increase ...
• #### Measurement of deuteron spectra and elliptic flow in Pb–Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV at the LHC ﻿

(Peer reviewed; Journal article, 2017-10)
The transverse momentum $p_{\rm T}$ spectra and elliptic flow coefficient $v_2$ of deuterons and anti-deuterons at mid-rapidity $|y|<0.5$ are measured with the ALICE detector at the LHC in Pb-Pb collisions at ...