Browsing Department of Physics and Technology by Journals "Physics Letters B"
Now showing items 1-20 of 158
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\(^{3}_{\Lambda}\mathrm H\) and \(^{3}_{\bar{\Lambda}} \overline{\mathrm H}\) production in Pb-Pb collisions at \(\sqrt{s_{\rm NN}}\) = 2.76 TeV
(Peer reviewed; Journal article, 2016-03)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 ... -
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 ... -
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 in Xe–Xe collisions at √sNN = 5.44 TeV
(Peer reviewed; Journal article, 2018-06-30)The first measurements of anisotropic flow coefficients v_n for mid-rapidity charged particles in Xe–Xe collisions at √sNN = 5.44 TeV are presented. Comparing these measurements to those from Pb–Pb collisions at √sNN = ... -
Anisotropic flow of charged hadrons, pions and (anti-)protons measured at high transverse momentum in Pb-Pb collisions at \(\sqrt{s_{NN}}\)=2.76 TeV
(Peer reviewed; Journal article, 2013-03)The elliptic, \(v_2\), triangular, \(v_3\), and quadrangular, \(v_4\), azimuthal anisotropic flow coefficients are measured for unidentified charged particles, pions, and (anti-)protons in Pb–Pb collisions at \(\sqrt{s_{NN}}\) ... -
Azimuthal anisotropy of charged jet production in \(\sqrt{s_{\rm NN}}=2.76\) TeV Pb–Pb collisions
(Peer reviewed; Journal article, 2016-02)This paper presents measurements of the azimuthal dependence of charged jet production in central and semi-central \(\sqrt{s_{\rm NN}}=2.76\) TeV Pb–Pb collisions with respect to the second harmonic event plane, quantified ... -
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 ... -
Beauty production in pp collisions at √s=2.76 TeV measured via semi-electronic decays
(Peer reviewed; Journal article, 2014-11)The ALICE Collaboration at the LHC reports measurement of the inclusive production cross section of electrons from semi-leptonic decays of beauty hadrons with rapidity |y|<0.8 and transverse momentum 1<pT<10 GeV/c, in pp ... -
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 ... -
Centrality and transverse momentum dependence of inclusive J/ψ production at midrapidity in Pb–Pb collisions at √sNN=5.02 TeV
(Journal article; Peer reviewed, 2020-06-10)The inclusive J/ψ meson production in Pb–Pb collisions at a center-of-mass energy per nucleon–nucleon collision of √sNN = 5.02 TeV at midrapidity (|y| < 0.9) is reported by the ALICE Collaboration. The measurements are ... -
Centrality Dependence of Charged Particle Production at Large Transverse Momentum in Pb--Pb Collisions at \(\sqrt{s_{\rm{NN}}} = 2.76\) TeV
(Peer reviewed; Journal article, 2013-03)The inclusive transverse momentum (pT) distributions of primary charged particles are measured in the pseudo-rapidity range |\(\eta\)| < 0.8 as a function of event centrality in Pb–Pb collisions at \(\sqrt{s_{NN}}\) = 2.76 ... -
Centrality dependence of the pseudorapidity density distribution for charged particles in Pb-Pb collisions at \(\sqrt{s_{\rm NN}}=5.02\) TeV
(Peer reviewed; Journal article, 2017-09)We present the charged-particle pseudorapidity density in Pb-Pb collisions at \(\sqrt{s_{\mathrm{NN}}}=5.02\,\mathrm{Te\kern-.25exV}\) in centrality classes measured by ALICE. The measurement covers a wide pseudorapidity ... -
Centrality dependence of the pseudorapidity density distribution for charged particles in Pb-Pb collisions at \(\sqrt{s_{NN}}\) = 2.76 TeV
(Peer reviewed; Journal article, 2013-11)We present the first wide-range measurement of the charged-particle pseudorapidity density distribution, for different centralities (the 0-5%, 5-10%, 10-20%, and 20-30% most central events) in Pb-Pb collisions at ... -
Centrality, rapidity and transverse momentum dependence of the J/\(psi\) suppression in Pb-Pb collisions at \(\sqrt{s_{NN}}\)=2.76 TeV
(Peer reviewed; Journal article, 2014-06)The inclusive J/\).psi\) nuclear modification factor \(R_{AA}\) in Pb-Pb collisions at \(\sqrt{s_{NN}}\).2.76TeV has been measured by ALICE as a function of centrality in the \(e^+e^-\) decay channel at mid-rapidity |y| ... -
Characterizing the initial conditions of heavy-ion collisions at the LHC with mean transverse momentum and anisotropic flow correlations
(Journal article; Peer reviewed, 2022)Correlations between mean transverse momentum [pT] and anisotropic flow coefficients v2 or v3 are measured as a function of centrality in Pb–Pb and Xe–Xe collisions at sNN=5.02 TeV and 5.44 TeV, respectively, with ALICE. ... -
Charge correlations using the balance function in Pb-Pb collisions at \(\sqrt{s_{NN}}\) = 2.76 TeV
(Peer reviewed; Journal article, 2013-06)In high–energy heavy–ion collisions, the correlations between the emitted particles can be used as a probe to gain insight into the charge creation mechanisms. In this article, we report the first results of such studies ... -
Charged-particle multiplicities in \(pp\) interactions at \(\sqrt{s}\) = 900 GeV measured with the ATLAS detector at the LHC
(Peer reviewed; Journal article, 2010-04)The first measurements from proton-proton collisions recorded with the ATLAS detector at the LHC are presented. Data were collected in December 2009 using a minimum-bias trigger during collisions at a centre-of-mass energy ... -
Coherent \(\psi(2S)\) photo-production in ultra-peripheral Pb-Pb collisions at \(\sqrt{s_{\rm NN}}\)= 2.76 TeV
(Peer reviewed; Journal article, 2015-12)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 ... -
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 ... -
Combination of searches for Higgs boson pairs in pp collisions at √s=13 TeV with the ATLAS detector
(Journal article; Peer reviewed, 2020-01-10)This letter presents a combination of searches for Higgs boson pair production using up to 36.1 fb−1 of proton–proton collision data at a centre-of-mass energy √s = 13 TeV recorded with the ATLAS detector at the LHC. The ...