The EPPS16 nuclear PDFs

Eskola, Kari J.; Paakkinen, Petja; Paukkunen, Hannu; A., Salgado, Carlos

doi:10.48550/arxiv.1709.08347

Cited by 2 publications

(5 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We expect that this observation can be explained by using appropriately chosen nuclear PDFs. At present, nuclear PDFs have very large errors [31][32][33] and a direct comparison with the available nPDFs is not very instructive. However, one can conclude that these precise LHCb data will help to narrow down possible nPDF parametrizations.…”

Section: Meson Production In P-p and P-pb Collisionsmentioning

confidence: 97%

Study of heavy meson production in p–Pb collisions atS=5.02TeV in the general-mass variable-flavour-number scheme

Krämer

Spiesberger

2017

Nuclear Physics B

View full text Add to dashboard Cite

We study inclusive charm and bottom production, for both D and B mesons, in p-Pb collisions at the LHC. Numerical results for p T -differential production cross sections are obtained at next-to-leading-order in the general-mass variable-flavornumber scheme. We compare our results with recent data from ALICE, LHCb and CMS at a center-of-mass energy of 5 TeV and find good agreement. A comparison with p-p cross sections does not reveal the presence of nuclear initial-state interaction effects that could be expected to become visible as deviations of the ratio of p-Pb and p-p cross sections from one.

show abstract

Section: Meson Production In P-p and P-pb Collisionsmentioning

confidence: 97%

Study of heavy meson production in p–Pb collisions atS=5.02TeV in the general-mass variable-flavour-number scheme

Krämer

Spiesberger

2017

Nuclear Physics B

View full text Add to dashboard Cite

show abstract

“…Figure 1: Nuclear modification factors for proton distribution functions of quarks and gluons, taken from [14].…”

Section: Quarksmentioning

confidence: 99%

“…In Fig. 1 we recall their size, integrated over the transverse momentum of the partons, k t , as extracted from the experimental data by the Eskola et al [14] and CTEQ [16] groups. The correction factors do not differ significantly from 1 over the full range of the x-variable.…”

Section: Quarksmentioning

confidence: 99%

“…The bound nucleons undergo soft collisions several times over their passage through the volume of the target nucleus. They "loose" their soft partons already in their first collision and produce less particles per binary collisions than free nucleons (protons) 14 . For nuclear bunches, the number of produced particles is no longer proportional to the number of binary collisions but, instead, to the number of pairs of wounded (participant) nucleons [53], N part /2.…”

Section: Pile-up Backgroundmentioning

confidence: 99%

“…, (A. 14) and λ 0 = 2πc/ω 0 is the emitted photon wavelength. Equations presented in this Appendix are used in the simulations of the beam cooling process presented in Section 7.3.…”

Section: A2 Cross Sectionmentioning

confidence: 99%

See 2 more Smart Citations

High-luminosity Large Hadron Collider with laser-cooled isoscalar ion beams

Krasny,

Petrenko,

Placzek

2020

Preprint

View full text Add to dashboard Cite

The existing CERN accelerator infrastructure is world unique and its research capacity should be fully exploited. In the coming decade its principal modus operandi will be focused on producing intense proton beams, accelerating and colliding them at the Large Hadron Collider (LHC) with the highest achievable luminosity. This activity should, in our view, be complemented by new initiatives and their feasibility studies targeted on re-using the existing CERN accelerator complex in novel ways that were not conceived when the machines were designed. They should provide attractive, ready-to-implement research options for the forthcoming paradigm-shift phase of the CERN research. This paper presents one of the case studies of the Gamma Factory initiative [1] -a proposal of a new operation scheme of ion beams in the CERN accelerator complex. Its goal is to extend the scope and precision of the LHC-based research by complementing the proton-proton collision programme with the high-luminosity nucleus-nucleus one. Its numerous physics highlights include studies of the exclusive Higgs-boson production in photon-photon collisions and precision measurements of the electroweak (EW) parameters. There are two principal ways to increase the LHC luminosity which do not require an upgrade of the CERN injectors: (1) modification of the beam-collision optics and (2) reduction of the transverse emittance of the colliding beams. The former scheme is employed by the ongoing high-luminosity (HL-LHC) project. The latter one, applicable only to ion beams, is proposed in this paper. It is based on laser cooling of bunches of partially stripped ions at the SPS flat-top energy. For isoscalar calcium beams, which fulfil the present beam-operation constrains and which are particularly attractive for the EW physics, the transverse beam emittance can be reduced by a factor of 5 within the 8 seconds long cooling phase. The predicted nucleon-nucleon luminosity of L N N = 4.2 × 10 34 s −1 cm −2 for collisions of the cooled calcium beams at the LHC top energy is comparable to the levelled luminosity for the HL-LHC proton-proton collisions, but with reduced pile-up background. The scheme proposed in this paper, if confirmed by the future Gamma Factory proof-of-principle experiment, could be implemented at CERN with minor infrastructure investments. † This paper is dedicated to the memory of Evgeny Bessonov, the Gamma Factory group member and our colleague, who passed away recently.

show abstract

The EPPS16 nuclear PDFs

Cited by 2 publications

References 2 publications

Study of heavy meson production in p–Pb collisions atS=5.02TeV in the general-mass variable-flavour-number scheme

Study of heavy meson production in p–Pb collisions atS=5.02TeV in the general-mass variable-flavour-number scheme

High-luminosity Large Hadron Collider with laser-cooled isoscalar ion beams

Contact Info

Product

Resources

About