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Neutron-skin effect...
Neutron-skin effect and centrality dependence of high-pT observables in nuclear collisions
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- Helenius, Ilkka (författare)
- Lund University,Lunds universitet,Teoretisk partikelfysik - Geonomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Theoretical Particle Physics - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
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- Paukkunen, Hannu (författare)
- University of Helsinki,University of Santiago de Compostela,University of Jyväskylä
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- Eskola, Kari J. (författare)
- University of Jyväskylä,University of Helsinki
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(creator_code:org_t)
- 2016
- 2016
- Engelska.
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Ingår i: Proceedings of Science. - 1824-8039. ; 11-15-April-2016
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
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