The Experts below are selected from a list of 151104 Experts worldwide ranked by ideXlab platform

H Abreu - One of the best experts on this subject based on the ideXlab platform.

G Aad - One of the best experts on this subject based on the ideXlab platform.

J Adam - One of the best experts on this subject based on the ideXlab platform.

  • centrality dependence of the pseudorapidity density distribution for Charged Particles in pb pb collisions at snn 5 02 tev
    Physics Letters B, 2017
    Co-Authors: J Adam, D Adamova, M M Aggarwal, Aglieri G Rinella, Z Ahammed, M Agnello, N Agrawal, S Ahmad, Sang Un Ahn, S Aiola
    Abstract:

    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 range from $-3.5$ to $5$, which is sufficient for reliable estimates of the total number of Charged Particles produced in the collisions. For the most central (0-5%) collisions we find $21\,400\pm 1\,300$ while for the most peripheral (80-90%) we find $230\pm 38$. This corresponds to an increase of $(27\pm4)\%$ over the results at $\sqrt{s_{\mathrm{NN}}}=2.76\,\mathrm{Te\kern-.25exV}$ previously reported by ALICE. The energy dependence of the total number of Charged Particles produced in heavy-ion collisions is found to obey a modified power-law like behaviour. The Charged-particle pseudorapidity density of the most central collisions is compared to model calculations --- none of which fully describes the measured distribution. We also present an estimate of the rapidity density of Charged Particles. The width of that distribution is found to exhibit a remarkable proportionality to the beam rapidity, independent of the collision energy from the top SPS to LHC energies.

  • measurement of azimuthal correlations of d mesons with Charged Particles in pp collisions at s 7 tev and p pb collisions at snn 5 02 tev
    European Physical Journal C, 2017
    Co-Authors: J Adam, D Adamova, M M Aggarwal, Z Ahammed, M Agnello, N Agrawal, S Ahmad, Sang Un Ahn, Gianluca Aglieri Rinella, S Aiola
    Abstract:

    The azimuthal correlations of D mesons with Charged Particles were measured with the ALICE apparatus in pp collisions at $${\sqrt{s}}=7~\mathrm {TeV}$$ and p–Pb collisions at $${\sqrt{{{s}}_{\scriptscriptstyle {\mathrm{NN}}}}}=5.02~\mathrm {TeV}$$ at the Large Hadron Collider. $$\mathrm{D}^{0}$$ , $${\mathrm{D}^{+}}$$ , and $${\mathrm{D}^{*+}}$$ mesons and their charge conjugates with transverse momentum $$3<{p}_{\mathrm{T}}<16~\mathrm {GeV}/c$$ and rapidity in the nucleon-nucleon centre-of-mass system $$|y_\mathrm{cms}|<0.5$$ (pp collisions) and $$-0.96collisions) were correlated to Charged Particles with $${p}_{\mathrm{T}}>0.3~\mathrm {GeV}/c$$ . The yield of Charged Particles in the correlation peak induced by the jet containing the D meson and the peak width are compatible within uncertainties in the two collision systems. The data are described within uncertainties by Monte-Carlo simulations based on PYTHIA, POWHEG, and EPOS 3 event generators.

  • pseudorapidity and transverse momentum distributions of Charged Particles in proton proton collisions at s 13 tev
    Physics Letters B, 2016
    Co-Authors: J Adam, D Adamova, M M Aggarwal, Aglieri G Rinella, Michelangelo Agnello, Nikita Agrawal, Z Ahammed, Salvatore Aiola, A Akindinov, S N Alam
    Abstract:

    The pseudorapidity ($\eta$) and transverse-momentum ($p_{\rm T}$) distributions of Charged Particles produced in proton-proton collisions are measured at the centre-of-mass energy $\sqrt{s}$ = 13 TeV. The pseudorapidity distribution in $|\eta|<$ 1.8 is reported for inelastic events and for events with at least one Charged particle in $|\eta|<$ 1. The pseudorapidity density of Charged Particles produced in the pseudorapidity region $|\eta|<$ 0.5 is 5.31 $\pm$ 0.18 and 6.46 $\pm$ 0.19 for the two event classes, respectively. The transverse-momentum distribution of Charged Particles is measured in the range 0.15 $<$ $p_{\rm T}$ $<$ 20 GeV/c and $|\eta|<$ 0.8 for events with at least one Charged particle in $|\eta|<$ 1. The correlation between transverse momentum and particle multiplicity is also investigated by studying the evolution of the spectra with event multiplicity. The results are compared with calculations from PYTHIA and EPOS Monte Carlo generators.

S Aiola - One of the best experts on this subject based on the ideXlab platform.

  • centrality dependence of the pseudorapidity density distribution for Charged Particles in pb pb collisions at snn 5 02 tev
    Physics Letters B, 2017
    Co-Authors: J Adam, D Adamova, M M Aggarwal, Aglieri G Rinella, Z Ahammed, M Agnello, N Agrawal, S Ahmad, Sang Un Ahn, S Aiola
    Abstract:

    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 range from $-3.5$ to $5$, which is sufficient for reliable estimates of the total number of Charged Particles produced in the collisions. For the most central (0-5%) collisions we find $21\,400\pm 1\,300$ while for the most peripheral (80-90%) we find $230\pm 38$. This corresponds to an increase of $(27\pm4)\%$ over the results at $\sqrt{s_{\mathrm{NN}}}=2.76\,\mathrm{Te\kern-.25exV}$ previously reported by ALICE. The energy dependence of the total number of Charged Particles produced in heavy-ion collisions is found to obey a modified power-law like behaviour. The Charged-particle pseudorapidity density of the most central collisions is compared to model calculations --- none of which fully describes the measured distribution. We also present an estimate of the rapidity density of Charged Particles. The width of that distribution is found to exhibit a remarkable proportionality to the beam rapidity, independent of the collision energy from the top SPS to LHC energies.

  • measurement of azimuthal correlations of d mesons with Charged Particles in pp collisions at s 7 tev and p pb collisions at snn 5 02 tev
    European Physical Journal C, 2017
    Co-Authors: J Adam, D Adamova, M M Aggarwal, Z Ahammed, M Agnello, N Agrawal, S Ahmad, Sang Un Ahn, Gianluca Aglieri Rinella, S Aiola
    Abstract:

    The azimuthal correlations of D mesons with Charged Particles were measured with the ALICE apparatus in pp collisions at $${\sqrt{s}}=7~\mathrm {TeV}$$ and p–Pb collisions at $${\sqrt{{{s}}_{\scriptscriptstyle {\mathrm{NN}}}}}=5.02~\mathrm {TeV}$$ at the Large Hadron Collider. $$\mathrm{D}^{0}$$ , $${\mathrm{D}^{+}}$$ , and $${\mathrm{D}^{*+}}$$ mesons and their charge conjugates with transverse momentum $$3<{p}_{\mathrm{T}}<16~\mathrm {GeV}/c$$ and rapidity in the nucleon-nucleon centre-of-mass system $$|y_\mathrm{cms}|<0.5$$ (pp collisions) and $$-0.96collisions) were correlated to Charged Particles with $${p}_{\mathrm{T}}>0.3~\mathrm {GeV}/c$$ . The yield of Charged Particles in the correlation peak induced by the jet containing the D meson and the peak width are compatible within uncertainties in the two collision systems. The data are described within uncertainties by Monte-Carlo simulations based on PYTHIA, POWHEG, and EPOS 3 event generators.

J Abdallah - One of the best experts on this subject based on the ideXlab platform.