Viser treff 1-20 av 87

• #### 3Λh and 3‾Λ‾h lifetime measurement in Pb–Pb collisions at √sNN = 5.02 TeV via two-body decay ﻿

(Peer reviewed; Journal article, 2019-10)
An improved value for the lifetime of the (anti-)hypertriton has been obtained using the data sample of Pb–Pb collisions at sNN=5.02 TeV collected by the ALICE experiment at the LHC. The (anti-)hypertriton has been ...
• #### Addressing the hypertriton lifetime puzzle with ALICE at the LHC ﻿

(Peer reviewed; Journal article, 2019)
The ALICE Collaboration collected a large data sample of Pb-Pb collisions at√sNN=5.02 TeV in 2015 at the LargeHadron Collider (LHC) and the excellent particle identification (PID) capabilities allow for the detection of ...
• #### ALICE measurements of flow coefficients and their correlations in small (pp and p–Pb) and large (Xe–Xe and Pb–Pb) collision systems ﻿

(Peer reviewed; Journal article, 2019)
Many observables which are used as a signature of the collective effects in heavy-ion collisions when measured in high multiplicity pp and pA interactions reveal a very similar behaviour. We will present first measurements ...
• #### ALICE results on system-size dependence of charged-particle multiplicity density in p–Pb, Pb–Pb and Xe–Xe collisions ﻿

(Peer reviewed; Journal article, 2019)
Particle production at LHC energies involves the interplay of hard (perturbative) and soft (non-perturbative) QCD processes. Global observables, such as the charged-particle multiplicity, are related to the initial geometry ...
• #### Analysis of the apparent nuclear modification in peripheral Pb–Pb collisions at 5.02 TeV ﻿

(Peer reviewed; Journal article, 2019)
Charged-particle spectra at midrapidity are measured in Pb–Pb collisions at the centre-of-mass energy per nucleon–nucleon pair √sNN = 5.02 TeV and presented in centrality classes ranging from most central (0–5%) to most ...
• #### Anisotropic flow of identified particles in Pb-Pb collisions at √sNN=5.02 TeV ﻿

(Peer reviewed; Journal article, 2018-09-03)
The elliptic (v_2), triangular (v_3), and quadrangular (v-4) flow coefficients of π^±, K^±, p+p¯,Λ+Λ¯,K^0_S , and the ϕ-meson are measured in Pb-Pb collisions at √s_NN=5.02 TeV. Results obtained with the scalar product ...
• #### Azimuthal Anisotropy of Heavy-Flavor Decay Electrons in p-Pb Collisions at √sNN=5.02  TeV ﻿

(Peer reviewed; Journal article, 2019)
Angular correlations between heavy-flavor decay electrons and charged particles at midrapidity ( | η | < 0.8 ) are measured in p -Pb collisions at √ s N N = 5.02     TeV . The analysis is carried out for the 0%–20% (high) ...
• #### Azimuthally-differential pion femtoscopy relative to the third harmonic event plane in Pb–Pb collisions at √sNN = 2.76 TeV ﻿

(Peer reviewed; Journal article, 2018-06-22)
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 ...
• #### Balance functions of (un)identified hadrons in Pb–Pb, p–Pb, and pp collisions at the LHC ﻿

(Peer reviewed; Journal article, 2019-02)
In ultrarelativistic heavy-ion collisions, correlations of particles with opposite quantum numbers provide insight into quark production mechanisms and time scales, collective motion, and re-scattering in the hadronic ...
• #### Calibration of the photon spectrometer PHOS of the ALICE experiment ﻿

(Peer reviewed; Journal article, 2019)
The procedure for the energy calibration of the high granularity electromagnetic calorimeter PHOS of the ALICE experiment is presented. The methods used to perform the relative gain calibration, to evaluate the geometrical ...
• #### Centrality and pseudorapidity dependence of the charged-particle multiplicity density in Xe–Xe collisions at √sNN=5.44 TeV ﻿

(Peer reviewed; Journal article, 2019-12-28)
In this Letter, the ALICE Collaboration presents the ﬁrst measurements of the charged-particle multiplicity density, dNch/dη, and total charged-particle multiplicity, Ntot ch , in Xe–Xe collisions at a centre-of-mass energy ...
• #### Charged jet cross section and fragmentation in proton-proton collisions at √s=7  TeV ﻿

(Peer reviewed; Journal article, 2019-01-31)
We report the differential charged jet cross section and jet fragmentation distributions measured with the ALICE detector in proton-proton collisions at a center-of-mass energy √s=7  TeV. Jets with pseudorapidity|η|<0.5 ...
• #### Charged-particle production as a function of multiplicity and transverse spherocity in pp collisions at √s=5.02and 13 TeV ﻿

(Peer reviewed; Journal article, 2019-10-17)
We present a study of the inclusive chargedparticle transverse momentum (pT) spectra as a function of charged-particle multiplicity density at mid-pseudorapidity, dNch/dη, in pp collisions at √s = 5.02 and 13 TeV covering ...
• #### Charged-particle pseudorapidity density at mid-rapidity in p–Pb collisions at √sNN = 8.16 TeV ﻿

(Peer reviewed; Journal article, 2019-04-04)
The pseudorapidity density of charged particles, dNch/dη , in p–Pb collisions has been measured at a centre-of-mass energy per nucleon–nucleon pair of sNN−−−√ = 8.16 TeV at mid-pseudorapidity for non-single-diffractive ...
• #### Coherent J/ψ photoproduction at forward rapidity in ultra-peripheral Pb–Pb collisions at √sNN = 5.02 TeV ﻿

(Peer reviewed; Journal article, 2019)
The ALICE collaboration performed the first rapidity-differential measurement of coherent J/ψ photoproduction in ultra-peripheral Pb–Pb collisions at a center-of-mass energy √sNN = 5.02 TeV. The J/ψ is detected via its ...
• #### Constraining production models with light (anti-)nuclei measurements in small systems with ALICE at the LHC ﻿

(Peer reviewed; Journal article, 2019)
The production of deuterons and anti-deuterons in pp collisions at √s = 7 and 13 TeV has been studied as a function of charged-particle multiplicity using the ALICE detector at the LHC. The preliminary results are shown ...
• #### Dielectron and heavy-quark production in inelastic and high-multiplicity proton–proton collisions at √s=13 TeV ﻿

(Peer reviewed; Journal article, 2019-01-10)
The measurement of dielectron production is presented as a function of invariant mass and transverse momentum () at midrapidity () in proton–proton (pp) collisions at a centre-of-mass energy of TeV. The contributions from ...
• #### Dielectron measurements in pp and Pb–Pb colllisions with ALICE at the LHC ﻿

(Peer reviewed; Journal article, 2019)
The production of low-mass dielectrons is one of the most promising tools for the investigation of chiral symmetry restoration and thermal radiation from the QGP created in heavy-ion collisions. To single out the signal ...
• #### Dielectron production in proton-proton collisions at √s=7 TeV ﻿

(Peer reviewed; Journal article, 2018-09-12)
The first measurement of e^+e^− pair production at mid-rapidity (|ηe| < 0.8) in pp collisions at √s=7 TeV with ALICE at the LHC is presented. The dielectron production is studied as a function of the invariant mass (m_ee ...
• #### Direct photon elliptic flow in Pb–Pb collisions at √sNN=2.76 TeV ﻿

(Peer reviewed; Journal article, 2019-02-10)
The elliptic flow of inclusive and direct photons was measured at mid-rapidity in two centrality classes 0–20% and 20–40% in Pb–Pb collisions at TeV by ALICE. Photons were detected with the highly segmented electromagnetic ...