Neutron-skin effect and centrality dependence of high-pT observables in nuclear collisions
Helenius, I., Paukkunen, H., & Eskola, K. (2016). Neutron-skin effect and centrality dependence of high-pT observables in nuclear collisions. In DIS 2016 : Proceedings of the 24th International Workshop on Deep-Inelastic Scattering and Related Subjects (Article 028). SISSA. PoS : Proceedings of Science, DIS2016. https://doi.org/10.22323/1.265.0028
Published in
PoS : Proceedings of ScienceDate
2016Copyright
© the Authors, 2016. This article is distributed under the terms of the Creative Commons
Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0).
We report on our studies of the neutron-skin effects in high-pT observables at the LHC. We study
the impact of the neutron-skin effect on the centrality dependence of inclusive direct photon, highpT
hadron and W± production in nuclear collisions at the LHC. The neutron-skin effect refers to
the observation that in spherical heavy nuclei, the tail of the neutron distribution extends farther
than the distribution of protons, which can affect observables sensitive to electroweak phenomena
in very peripheral collisions. We quantify this effect for direct photons, charged hadrons and W
bosons as a function of the collision centrality. In the case of direct photons we find that it will be
difficult to resolve the neutron-skin effect, given the uncertainties in the nuclear PDFs and their
spatial dependence. With charged hadrons and W’s, however, up to 20 % unambiguous effects
are expected for most peripheral collisions.
Publisher
SISSAConference
International Workshop on Deep-Inelastic Scattering and Related SubjectsIs part of publication
DIS 2016 : Proceedings of the 24th International Workshop on Deep-Inelastic Scattering and Related SubjectsISSN Search the Publication Forum
1824-8039Keywords
Original source
http://pos.sissa.it/archive/conferences/265/028/DIS2016_028.pdfPublication in research information system
https://converis.jyu.fi/converis/portal/detail/Publication/26402570
Metadata
Show full item recordCollections
License
Except where otherwise noted, this item's license is described as © the Authors, 2016. This article is distributed under the terms of the Creative Commons
Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0).
Related items
Showing items with similar title or keywords.
-
Centrality dependence of high-pT D meson suppression in Pb-Pb collisions at √sNN = 2.76 TeV
ALICE Collaboration (Springer Berlin Heidelberg, 2015)The nuclear modification factor, RAA, of the prompt charmed mesons D0 , D+ and D∗+, and their antiparticles, was measured with the ALICE detector in Pb-Pb collisions at a centre-of-mass energy √ sNN = 2.76 TeV in two ... -
Centrality and rapidity dependence of inclusive pion and prompt photon production in p+Pb collisions at the LHC with EPS09s nPDFs
Helenius, Ilkka; Eskola, Kari; Paukkunen, Hannu (Institute of Physics Publishing Ltd., 2015)The centrality dependencies of the inclusive neutral pion and prompt photon nuclear modification factors for p+Pb collisions at the LHC are studied using a spatially dependent set of nuclear PDFs, EPS09s. The calculations ... -
Forward J/ψ production in pA collisions : centrality dependence
Ducloue, Bertrand; Lappi, Tuomas; Mäntysaari, H. (Sissa, 2016)The nuclear suppression of forward J/ψ production in high energy proton-nucleus collisions can be used as a probe of gluon saturation at small x. In an earlier work we studied this suppression in minimum bias collisions ... -
Centrality Dependence of the Charged-Particle Multiplicity Density at Midrapidity in Pb-Pb Collisions at √sNN = 5.02 TeV
ALICE Collaboration (American Physical Society, 2016)The pseudorapidity density of charged particles, dNch=dη, at midrapidity in Pb-Pb collisions has been measured at a center-of-mass energy per nucleon pair of √sNN=5.02 TeV. For the 5% most central collisions, we measure ...