Coherent and incoherent production of vector mesons in ultraperipheral collisions of xenon ions within the QCD parton saturation approach

Köpp, F.; Machado, M. V. T.

doi:10.1103/physrevd.98.014010

Cited by 8 publications

(5 citation statements)

References 41 publications

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“…The recent measurements [1][2][3][4][5][6] of exclusive production of J/ψ mesons in ultraperipheral heavy-ion collisions at the LHC have attracted much attention. At high energies, the diffractive photoproduction of the J/ψ meson can be described in the color dipole picture, see for example numerous approaches [7][8][9][10][11][12][13][14][15][16][17][18]. In the dipole approach the imaginary part of the diffractive production amplitude in forward direction takes the form ℑmA(γA → V A; W, q = 0) = 2…”

Section: Introductionmentioning

confidence: 99%

Coherent photoproduction of $J/\psi$ in nucleus-nucleus collisions \\in the color dipole approach- an update

Łuszczak

Schäfer

2022

SciPost Phys. Proc.

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We discuss the role of c \bar c gcc‾g-Fock states in the diffractive photoproduction of J/\psiJ/ψ-mesons. We build on our earlier description of the process in the color-dipole approach, where we took into account the rescattering of c \bar ccc‾ pairs using a Glauber-Gribov form of the dipole-nucleus amplitude. We compare the results of our calculations to recent data on the photoproduction of J/\psiJ/ψ by the ALICE and LHCb collaborations.

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Section: Introductionmentioning

confidence: 99%

Coherent photoproduction of $J/\psi$ in nucleus-nucleus collisions \\in the color dipole approach- an update

Łuszczak

Schäfer

2022

SciPost Phys. Proc.

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“…This however is not a complete review of the available literature, nor can we, due to space limitations, provide extensive discussions of the merits and shortcomings of different approaches. For applications of the color dipole approach to UPCs, some of them extending to light vector mesons and excited states, we refer the reader to [40][41][42][43][44][45][46][47][48][49][50][51][52]. The momentum space formulation, k ⊥factorization, which is equivalent to the dipole approach was used in [53], where also qqg-states were included.…”

Section: A Very Brief Overview Of Other Approachesmentioning

confidence: 99%

Photon induced processes: from ultraperipheral to semicentral heavy ion collisions

Schäfer

2020

Eur. Phys. J. A

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We present an overview of processes induced by the coherent Weizsäcker-Williams (WW) photon cloud in heavy ion collisions. Due to the rather broad energy spectrum of photons a large variety of physics topics can be addressed. At the low-energy side, there are the electromagnetic dissociation processes. We discuss the few-neutron production via giant dipole resonance excitation. A typical high energy photonuclear process that has attracted much attention is the diffractive photoproduction of vector mesons. We review the color dipole approach to coherent and incoherent diffractive photoproduction of $$J/\psi $$ J / ψ mesons. Finally we turn to peripheral and semicentral collisions and discuss the role of WW photons in the production of very low-$$P_T$$ P T dileptons.

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“…[33][34][35][36][37], where the predictions for transverse momentum and rapidity distributions considering different phenomenological models were estimated. Machado et al studied the inclusive and exclusive J/ψ, ψ(2S), and Υ photoproductions in the proton-nucleus and nucleusnucleus collisions at LHC within the color dipole formalism [38][39][40][41]. In Refs.…”

Section: Introductionmentioning

confidence: 99%

Inelastic heavy quarkonium photoproduction in ultrarelativistic heavy-ion collisions

Ma¹,

Lü²,

Zhang³

2022

Preprint

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The inelastic charmonium (J/ψ, ψ(2S), ηc, hc and χcJ ) and bottomonium (Υ(nS), η b , h b , and χ bJ ) photoproductions in ultrarelativistic heavy-ion collisions at LHC energies are studied, where the fragmentation processes are included. Based on the factorization formalism of non-relativistic QCD, an exact treatment is developed, which can weight the contribution from different channels and recovers the Weizsäcker-Williams approximation (WWA) near the region Q 2 ∼ 0. The relevant kinematical relations are also achieved. We present a comprehensive analysis for the properties of WWA in heavy-ion collisions, and discuss the contribution of inelastic photoproduction processes to the heavy quarkonium production. The Q 2 -, y-, √ s-, and pT -dependent cross sections, and the total cross sections are estimated. It is shown that the inelastic photoproduction and fragmentation processes can provide the evident modification to the heavy quarkonium production in p-p and P b-P b collisions at LHC energies, where the ultra-incoherent photon emission plays a very important role. Moreover, the WWA is only effective in very restricted domains, and the exact treatment can naturally avoid double counting and WWA errors.

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Coherent and incoherent production of vector mesons in ultraperipheral collisions of xenon ions within the QCD parton saturation approach

Cited by 8 publications

References 41 publications

Coherent photoproduction of $J/\psi$ in nucleus-nucleus collisions \\in the color dipole approach- an update

Coherent photoproduction of $J/\psi$ in nucleus-nucleus collisions \\in the color dipole approach- an update

Photon induced processes: from ultraperipheral to semicentral heavy ion collisions

Inelastic heavy quarkonium photoproduction in ultrarelativistic heavy-ion collisions

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