Vector meson production in ultra-peripheral collisions at the LHC

Fiore, R.; Jenkovszky, L. L.; Libov, V.; Machado, M. V. T.; Salii, A.

doi:10.1063/1.4916009

Cited by 4 publications

(3 citation statements)

References 9 publications

(31 reference statements)

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“…One of the first hypotheses is that this excess could be originated from coherent photoproduction of the meson in the peripheral region [12]. The photoproduction of heavy vector mesons has already been well explored in ultraperipheral collisions [13][14][15][16][17][18][19][20] and can act as a complement to allow us to obtain information about the gluon distribution in the nuclear medium. However, there are few works in the peripheral collisions regime (in particular, b ≃ 2R A ), where the exclusive photoproduction mechanism may still be relevant for the heavy vector mesons production.…”

Section: Introductionmentioning

confidence: 99%

J/Ψ photoproduction in peripheral AA collisions

Martins

2017

Phys. Rev. D

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The exclusive photoproduction of the heavy vector mesons J=Ψ is investigated in the context of peripheral lead-lead collisions for the energies available at the LHC, ffiffi ffi s p ¼ 2.76 TeV and ffiffi ffi s p ¼ 5.02 TeV.Using the light-cone color dipole formalism, the rapidity distribution was calculated in two centrality bins at 50%-70% and 70%-90% in order to evaluate its robustness in extrapolating down to a smaller impact parameter. A modified photon flux is introduced, without change in the photonuclear cross section in relation to the ultraperipheral (UPC) case. Results were obtained for the two regions analyzed, which presented a maximum difference of 27% in frontal rapidity for the two regions. Comparing the results for ffiffi ffi s p ¼ 2.76 TeV and ffiffi ffi s p ¼ 5.02 TeV, an increase was verified of approximately half the one obtained in the ultraperipheral regime in the central rapidity region.

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Section: Introductionmentioning

confidence: 99%

J/Ψ photoproduction in peripheral AA collisions

Martins

2017

Phys. Rev. D

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“…The consistency of the model can be attested by Figure 1 where the cross section for J/ψ photoproduction off the proton is compared with measurements of the ALICE collaboration for pPb ultraperipheral collisions at √ s N N = 5.02 TeV [31]. The connection between vector meson photoproduction off protons and UPC was described in a recent work [32] where also several theoretical models were compared in the study of pp ultraperipheral collisions at 7 TeV.…”

Section: Resultsmentioning

confidence: 81%

“…[32] however shows that models based on nucleonic degrees of freedom do describe rather well the cross section and rapidity distribution of J/ψ production in UPC even at very high energies and rapidity range between 2 and 4. It is worth to notice that in the above mentioned work the authors used a correction coeficient in the J/ψ photoproduction which was not used here.…”

Section: Resultsmentioning

confidence: 90%

Evidence of subnucleonic degrees of freedom inJ/ψphotoproduction in ultraperipheral collisions at energies available at the CERN Large Hadron Collider

et al. 2015

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We present calculations for the incoherent photoproduction of J/ψ vector mesons in ultraperipheral heavy ion collisions (UPC) in terms of hadronic interactions. This study was carried out using the recently developed Monte Carlo model CRISP extended to include UPCs at LHC energies. A careful study of re-scattering and destruction of the J/ψ particles is presented for PbPb collisions at √ sNN = 2.76 TeV. We have also compared our method to AuAu collisions at √ sNN = 200 GeV measured at RHIC.PACS numbers: 24.10.Lx, 25.20.Lj, 25.90.+k

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Photoproduction of upsilon states in ultraperipheral collisions at the CERN Large Hadron Collider within the color dipole approach

2016

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The exclusive photoproduction of Upsilon state Υ(1S) and its radially excited states Υ(2S, 3S) is investigated in the context of ultra-peripheral collisions at the LHC energies. Predictions are presented for their production in proton-proton, proton-nucleus and nucleus-nucleus collision at the energies available at the LHC run 2. The rapidity and transverse momentum distributions are shown, and the robustness of the model is tested against the experimental results considering ψ(1S, 2S) and Υ(1S) states. The theoretical framework considered in the analysis is the light-cone color dipole formalism, which includes consistently parton saturation effects and nuclear shadowing corrections.

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Vector meson production in ultra-peripheral collisions at the LHC

Cited by 4 publications

References 9 publications

J/Ψ photoproduction in peripheral AA collisions

J/Ψ photoproduction in peripheral AA collisions

Evidence of subnucleonic degrees of freedom inJ/ψphotoproduction in ultraperipheral collisions at energies available at the CERN Large Hadron Collider

Photoproduction of upsilon states in ultraperipheral collisions at the CERN Large Hadron Collider within the color dipole approach

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