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    Characterization of quark gluon plasma as seen through the energy loss of heavy quarks

    Sheikh, Ashik, Ahammed, Zubayer
    arXiv.org, Mar 12, 2018
    © ProQuest LLC All rights reserved, Engineering Database, Publicly Available Content Database, ProQuest Engineering Collection, ProQuest Technology Collection, ProQuest SciTech Collection, Materials Science & Engineering Database, ProQuest Central (new), ProQuest Central Korea, SciTech Premium Collection, Technology Collection, ProQuest Central Essentials, ProQuest One Academic, Engineering Collection (ProQuest)
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    Title: Characterization of quark gluon plasma as seen through the energy loss of heavy quarks
    Author: Sheikh, Ashik; Ahammed, Zubayer
    Contributor: Ahammed, Zubayer (pacrepositoryorg)
    Subject: Quarks ; Density Ratio ; Bulk Density ; Entropy ; Quantum Chromodynamics ; Energy Dissipation ; Shear Viscosity ; Quark-Gluon Plasma ; Ionic Collisions
    Description: The shear viscosity to entropy density ratio ({\eta}/s) of quark gluon plasma produced in ultra- relativistic heavy-ion collisions has been studied from the energy loss of heavy quarks in QGP medium. We have also studied the bulk viscosity to entropy density ratio ({\zeta}/s) and fluidity measure(F) of the medium using the obtained {\eta}/s values. In addition to that, we have estimated the heavy quark bound state potential (V) inside this medium. Our finding of {\eta}/s agrees well with the results obtained by Lattice QCD (LQCD) and functional renormalization group technique.
    Is part of: arXiv.org, Mar 12, 2018
    Identifier: 2331-8422 (E-ISSN)

    • Several versions

    Correlated event-by-event fluctuations of flow harmonics in Pb-Pb collisions at $\sqrt{s_{\rm NN}}=2.76$ TeV

    Adam, Jaroslav, Adamová, Dagmar, Aggarwal, Madan M, Aglieri Rinella, Gianluca, Agnello, Michelangelo, Agrawal, Nikita, Ahammed, Zubayer, Ahmad, Shafiq F, Ahn, Sang Un, Aiola, Salvatore, Alme, Johan, Helstrup, Håvard, Hetland, Kristin Fanebust, Kileng, Bjarte, Altinpinar, Sedat, Djuvsland, Øystein, Haaland, Øystein Senneset
    Physical review letters, 2016 [Peer Reviewed Journal]

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    Measurement of prompt D-meson production in p-Pb collisions at $\sqrt{s_{NN}}$ =5.02TeV

    Abelev, Betty, Adam, Jaroslav, Adamová, Dagmar, Aggarwal, Madan M, Aglieri Rinella, Gianluca, Agnello, Michelangelo, Agostinelli, Andrea, Agrawal, Nikita, Ahammed, Zubayer, Ahmad, Nazeer, Alme, Johan, Erdal, Hege Austrheim, Helstrup, Håvard, Hetland, Kristin Fanebust, Kileng, Bjarte, Altinpinar, Sedat, Djuvsland, Øystein
    Physical review letters, 2014 [Peer Reviewed Journal]
    Norwegian Open Research Archives (NORA)
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    Title: Measurement of prompt D-meson production in p-Pb collisions at $\sqrt{s_{NN}}$ =5.02TeV
    Author: Abelev, Betty; Adam, Jaroslav; Adamová, Dagmar; Aggarwal, Madan M; Aglieri Rinella, Gianluca; Agnello, Michelangelo; Agostinelli, Andrea; Agrawal, Nikita; Ahammed, Zubayer; Ahmad, Nazeer; Alme, Johan; Erdal, Hege Austrheim; Helstrup, Håvard; Hetland, Kristin Fanebust; Kileng, Bjarte; Altinpinar, Sedat; Djuvsland, Øystein
    Subject: Physics
    Description: The pT-differential production cross sections of the prompt charmed mesons $D^0, D^+, D^{*+}$ and $D_s^+$ and their charge conjugate in the rapidity interval -0.96 $y_{cms}$ 0.04 were measured in p-Pb collisions at a centre-of-mass energy $\sqrt{s_{NN}}$ = 5.02 TeV with the ALICE detector at the LHC. The nuclear modification factor $R_{pPb}$, quantifying the D-meson yield in p--Pb collisions relative to the yield in pp collisions scaled by the number of binary nucleon-nucleon collisions, is compatible within the 15-20% uncertainties with unity in the transverse momentum interval 1 $p_T$ 24 GeV/c. No significant difference among the $R_{pPb}$ of the four D-meson species is observed. The results are described within uncertainties by theoretical calculations that include initial-state effects. The measurement adds experimental evidence that the modification of the momentum spectrum of D mesons observed in Pb-Pb collisions with respect to pp collisions is due...
    Is part of: Physical review letters, 2014
    Identifier: 0031-9007 (ISSN); 1079-7114 (ISSN); 1079-7114 (E-ISSN); 10.1103/physrevlett.113.232301 (DOI)

    • Several versions

    Measurement of an excess in the Yield of J/ψ at very low pT in Pb-Pb collisions at √sNN=2.76 TeV

    Adam, Jaroslav, Adamová, Dagmar, Aggarwal, Madan M, Aglieri Rinella, Gianluca, Agnello, Michelangelo, Agrawal, Nikita, Ahammed, Zubayer, Ahmad, Shafiq F, Ahn, Sang Un, Aimo, Ilaria, Alme, Johan, Helstrup, Håvard, Hetland, Kristin Fanebust, Kileng, Bjarte, Altinpinar, Sedat, Djuvsland, Øystein, Haaland, Øystein Senneset
    Physical review letters, 2016 [Peer Reviewed Journal]

    • Several versions

    Star's measurement of energy and system size dependence of k/ fluctuations at rhic

    Ahammed, Zubayer
    Journal of Physics G: Nuclear and Particle Physics, 2008, Vol.35(10), p.104092 (4pp) [Peer Reviewed Journal]

    • Several versions

    Development and Characterization of 6-gap Bakelite Multi-gap Resistive Plate Chamber

    Ganai, Rajesh, Mondal, Mitali, Mehta, Shaifali, Ahammed, Zubayer, Chattopadhyay, Subhasis
    arXiv.org, Jun 21, 2018 [Peer Reviewed Journal]

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    Event-by-event fluctuations of mean transverse momentum in AuAu collisions in STAR experiment at relativistic heavy-ion collider

    Ahammed, Zubayer
    Pramana, 2003, Vol.60(5), pp.993-996 [Peer Reviewed Journal]
    Springer Science & Business Media B.V.
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    Title: Event-by-event fluctuations of mean transverse momentum in AuAu collisions in STAR experiment at relativistic heavy-ion collider
    Author: Ahammed, Zubayer
    Subject: Mean transverse momentum ; fluctuations
    Description: We report results on event-by-event fluctuations in mean transverse momentum in AuAu collisions at $$\sqrt {^s NN} = 130$$ GeV measured by the STAR experiment at RHIC. The dynamical fluctuations, $$\sigma _{\langle P_t \rangle ,dynam} $$ is found to be about 1.2 ±02% of the mean transverse momentum for particles in pseudo-rapidity range of −0.5 < η < 0.5 and for the top 6% central collisions.
    Is part of: Pramana, 2003, Vol.60(5), pp.993-996
    Identifier: 0304-4289 (ISSN); 0973-7111 (E-ISSN); 10.1007/BF02707018 (DOI)

    • Several versions

    Particle identification studies with a full-size 4-GEM prototype for the ALICE TPC upgrade

    Aggarwal, Madan M, Ahammed, Zubayer, Aiola, Salvatore, Alme, Johan, Alt, Torsten, Amend, Werner, Andronic, Anton, Anguelov, Venelin, Appelshäuser, Harald, Arslandoc, Mesut, Averbeck, Ralf Peter, Ball, Markus, Barnaföldi, Gergely Gábor, Bartsch, Esther, Bellwied, René, Bencédi, Gyula
    Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 2018 [Peer Reviewed Journal]

    • Several versions

    Charged-particle multiplicity distributions over a wide pseudorapidity range in proton-proton collisions at √s = 0.9, 7, and 8 TeV

    Acharya, Shreyasi, Adamová, Dagmar, Adolfsson, Jonatan, Aggarwal, Madan M, Aglieri Rinella, Gianluca, Agnello, Michelangelo, Agrawal, Nikita, Ahammed, Zubayer, Ahmad, Shafiq F, Ahn, Sang Un, Alme, Johan, Altenkaemper, Lucas, Djuvsland, Øystein, Lønne, Per-Ivar, Nystrand, Joakim, Rehman, Attiq Ur, Røhrich, Dieter
    The European physical journal. C, Particles and fields, 2017 [Peer Reviewed Journal]

    • Several versions

    Forward-backward multiplicity correlations in pp collisions at √s = 0.9, 2.76 and 7 TeV

    Adam, Jaroslav, Adamová, Dagmar, Aggarwal, Madan M, Aglieri Rinella, Gianluca, Agnello, Michelangelo, Agrawal, Nikita, Ahammed, Zubayer, Ahmed, Ijaz, Ahn, Sang Un, Aimo, Ilaria, Alme, Johan, Erdal, Hege Austrheim, Helstrup, Håvard, Hetland, Kristin Fanebust, Kileng, Bjarte, Altinpinar, Sedat, Djuvsland, Øystein
    The journal of high energy physics, 2015 [Peer Reviewed Journal]