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Constraints for nuclear PDFs from the LHCb D-meson data
/ Eskola, Kari J. (Jyvaskyla U. ; Helsinki U.) ; Helenius, Ilkka (Jyvaskyla U. ; Helsinki U.) ; Paakkinen, Petja (Jyvaskyla U. ; Helsinki U.) ; Paukkunen, Hannu (Jyvaskyla U. ; Helsinki U.)
We quantify the impact of LHCb D-meson measurements at $\sqrt{s}=5 \, {\rm TeV}$ on the EPPS16 and nCTEQ15 nuclear PDFs. In our study, the theoretical description of D-meson production is based on the recently developed SACOT-$m_{\rm T}$ variant of the general-mass variable-flavour-number formalism, and the impact on PDFs is estimated via reweighting methods. [...]
arXiv:1906.03943.-
SISSA, 2019-06-10 - 6 p.
- Published in : PoS DIS2019 (2019) 026
Fulltext: PoS(DIS2019)026 - PDF; 1906.03943 - PDF;
In : The XXVII International Workshop on Deep Inelastic Scattering and Related Subjects, Turin, Italy, 8 - 12 Apr 2019, pp.026
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Temperature dependence of $\eta/s$ of strongly interacting matter: effects of the equation of state and the parametric form of $(\eta/s)(T)$
/ Auvinen, Jussi (Belgrade, Inst. Phys.) ; Eskola, Kari J. (Jyvaskyla U. ; Helsinki Inst. of Phys.) ; Huovinen, Pasi (Belgrade, Inst. Phys. ; Wroclaw U.) ; Niemi, Harri (Jyvaskyla U. ; Helsinki Inst. of Phys.) ; Paatelainen, Risto (CERN) ; Petreczky, Peter (Brookhaven)
We investigate the temperature dependence of the shear viscosity to entropy density ratio $\eta/s$ using a piecewise linear parametrization. To determine the optimal values of the parameters and the associated uncertainties, we perform a global Bayesian model-to-data comparison on Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV and Pb+Pb collisions at $2.76$ TeV and $5.02$ TeV, using a 2+1D hydrodynamical model with the EKRT initial state. [...]
arXiv:2006.12499; CERN-TH-2020-099.-
2020-10-22 - 17 p.
- Published in : Phys. Rev. C 102 (2020) 044911
Fulltext: PDF; Fulltext from publisher: PDF;
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Temperature dependence of $\eta/s$: uncertainties from the equation of state
/ Auvinen, Jussi (Belgrade, Inst. Phys.) ; Eskola, Kari J. (Helsinki U. ; Helsinki Inst. of Phys.) ; Huovinen, Pasi (Wroclaw U.) ; Niemi, Harri (Helsinki U. ; Helsinki Inst. of Phys.) ; Paatelainen, Risto (CERN) ; Petreczky, Péter (Brookhaven)
We perform a global model-to-data comparison on Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV and Pb+Pb collisions at $2.76$ TeV and $5.02$ TeV, using a 2+1D hydrodynamics model with the EKRT initial state and a shear viscosity over entropy density ratio $(\eta/s)(T)$ with a linear $T$ dependence. To quantify the amount of uncertainty due to the choice of the equation of state (EoS), we compare analysis results based on four different EoSs: the well known $s95p$ parametrisation, an updated parametrisation based on the same list of particles in hadron resonance gas, but using recent lattice results for the partonic part of the EoS, and two new parametrisations based on the Particle Data Group 2016 particle list and the recent lattice results. [...]
arXiv:1811.01792.-
SISSA, 2018-11-09 - 8 p.
- Published in : PoS Confinement2018 (2018) 135
Fulltext: 1811.01792 - PDF; PoS(Confinement2018)135 - PDF;
In : 13th Quark Confinement and the Hadron Spectrum, Maynooth, Ireland, 31 Jul - 6 Aug 2018, pp.135
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5.
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Predictions for Cold Nuclear Matter Effects in $p+$Pb Collisions at $\sqrt{s_{_{NN}}} = 8.16$ TeV
/ Albacete, Javier L. (CAFPE, Granada ; Granada U., Theor. Phys. Astrophys.) ; Arleo, François (Ecole Polytechnique) ; Barnaföldi, Gergely G. (Wigner RCP, Budapest) ; Bíró, Gábor (Wigner RCP, Budapest ; Eotvos U.) ; d'Enterria, David (CERN) ; Ducloué, Bertrand (Jyvaskyla U.) ; Eskola, Kari J. (Jyvaskyla U. ; Helsinki Inst. of Phys.) ; Ferreiro, Elena G. (Santiago de Compostela U., IGFAE) ; Gyulassy, Miklos (Wigner RCP, Budapest ; Columbia U. ; LBNL, NSD ; CCNU, Wuhan, Inst. Part. Phys.) ; Harangozó, Szilvester Miklós (Wigner RCP, Budapest ; Eotvos U.) et al.
Predictions for cold nuclear matter effects on charged hadrons, identified light hadrons, quarkonium and heavy flavor hadrons, Drell-Yan dileptons, jets, photons, gauge bosons and top quarks produced in $p+$Pb collisions at $\sqrt{s_{_{NN}}} = 8.16$ TeV are compiled and, where possible, compared to each other. Predictions of the normalized ratios of $p+$Pb to $p+p$ cross sections are also presented for most of the observables, providing new insights into the expected role of cold nuclear matter effects. [...]
arXiv:1707.09973.-
2018-04 - 68 p.
- Published in : Nucl. Phys. A 972 (2018) 18-85
Fulltext: PDF;
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Predictions for $p+$Pb Collisions at $\sqrt{s_{NN}} = 5$ TeV: Comparison with Data
/ Albacete, Javier L. (Orsay, IPN) ; Arleo, François (Annecy, LAPTH ; Ecole Polytechnique) ; Barnaföldi, Gergely G. (Wigner RCP, Budapest) ; Barrette, Jean (Saclay) ; Deng, Wei-Tian (Frankfurt U., FIAS ; Shandong U.) ; Dumitru, Adrian (Baruch Coll.) ; Eskola, Kari J. (Helsinki Inst. of Phys. ; Jyvaskyla U.) ; Ferreiro, Elena G. (Santiago de Compostela U.) ; Fleuret, Frederic (Paris U., VI-VII) ; Fujii, Hirotsugu (KEK, Tsukuba) et al.
Predictions made in Albacete {\it et al} prior to the LHC $p+$Pb run at $\sqrt{s_{NN}} = 5$ TeV are compared to currently available data. Some predictions shown here have been updated by including the same experimental cuts as the data. [...]
arXiv:1605.09479.-
2016-09-20 - 53 p.
- Published in : Int. J. Mod. Phys. E 25 (2016) 1630005
Fulltext: PDF; External link: Preprint
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Modeling the Impact Parameter Dependence of the nPDFs With EKS98 and EPS09 Global Fits
/ Helenius, Ilkka (Jyvaskyla U. ; Helsinki Inst. of Phys.) ; Eskola, Kari J. (Jyvaskyla U. ; Helsinki Inst. of Phys.) ; Honkanen, Heli (Penn State U.) ; Salgado, Carlos A. (Santiago de Compostela U. ; Santiago de Compostela U., IGFAE ; CERN)
So far the nuclear PDFs (nPDFs) in the global DGLAP fits have been taken to be spatially independent. In this work, using the $A$-dependence of the globally fitted sets EPS09 and EKS98, we have determined the spatial dependence of the nPDFs in terms of powers of the nuclear thickness functions. [...]
arXiv:1207.6869.-
2013 - 4 p.
- Published in : Nucl. Phys. A 910-911 (2013) 510-513
Fulltext: PDF; External link: Preprint
In : 5th international conference on Hard and Electromagnetic probes of High Energy Nuclear Collisions, Cagliari, Italy, 27 May - 1 Jun 2012, pp.910-911
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10.
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