Exclusive photoproduction at the Fermilab Tevatron and CERN LHC within the dipole picture

Motyka, Leszek; Watt, G.

doi:10.1103/physrevd.78.014023

Cited by 88 publications

(129 citation statements)

References 53 publications

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“…[701]). The CDF measurements are in agreement with theoretical predictions that are based on models for the Pomeron [702][703][704][705][706][707][708][709][710]. The PHENIX collaboration has measured exclusive J/ψ production in Au+Au collisions at √ s N N = 200 GeV (Ref.…”

Section: Exclusive Production Of Charmoniasupporting

confidence: 77%

Heavy quarkonium: progress, puzzles, and opportunities

Brambilla¹,

Eidelman²,

Heltsley³

et al. 2011

Advances in the Physics of Particles and Nuclei

103

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A golden age for heavy quarkonium physics dawned a decade ago, initiated by the confluence of exciting advances in quantum chromodynamics (QCD) and an explosion of related experimental activity. The early years of this period were chronicled in the Quarkonium Working Group (QWG) CERN Yellow Report (YR) in 2004, which presented a comprehensive review of the status of the field at that time and provided specific recommendations for further progress. However, the broad spectrum of subsequent breakthroughs, surprises, and continuing puzzles could only be partially anticipated. Since the release of the YR, the BESII program concluded only to give birth to BESIII; the B-factories and CLEO-c flourished; quarkonium production and polarization measurements at HERA and the Tevatron matured; and heavy-ion collisions at RHIC have opened a window on the deconfinement regime. All these experiments leave legacies of quality, precision, and unsolved mysteries for quarkonium physics, and therefore beg for continuing investigations at BESIII, the LHC, RHIC, FAIR, the Super Flavor and/or Tau-Charm factories, JLab, the ILC, and beyond. The list of newly-found conventional states expanded to include hc(1P ), χc2(2P ), B + c , and η b (1S). In addition, the unexpected and still-fascinating X(3872) has been joined by * Editors † Section coordinators ‡ Corresponding author: bkh2@cornell.edu more than a dozen other charmonium-and bottomonium-like "XY Z" states that appear to lie outside the quark model. Many of these still need experimental confirmation. The plethora of new states unleashed a flood of theoretical investigations into new forms of matter such as quark-gluon hybrids, mesonic molecules, and tetraquarks. Measurements of the spectroscopy, decays, production, and in-medium behavior of cc, bb, and bc bound states have been shown to validate some theoretical approaches to QCD and highlight lack of quantitative success for others. Lattice QCD has grown from a tool with computational possibilities to an industrialstrength effort now dependent more on insight and innovation than pure computational power. New effective field theories for the description of quarkonium in different regimes have been developed and brought to a high degree of sophistication, thus enabling precise and solid theoretical predictions. Many expected decays and transitions have either been measured with precision or for the first time, but the confusing patterns of decays, both above and below open-flavor thresholds, endure and have deepened. The intriguing details of quarkonium suppression in heavy-ion collisions that have emerged from RHIC have elevated the importance of separating hotand cold-nuclear-matter effects in quark-gluon plasma studies. This review systematically addresses all these matters and concludes by prioritizing directions for ongoing and future efforts.

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Section: Exclusive Production Of Charmoniasupporting

confidence: 77%

Heavy quarkonium: progress, puzzles, and opportunities

Brambilla¹,

Eidelman²,

Heltsley³

et al. 2011

Advances in the Physics of Particles and Nuclei

103

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“…Since the pioneering studies [1][2][3] on diffractive vector meson production in ultra peripheral heavy ion collisions (UPHIC) about fourteen years ago, a large number of papers on the subject has been published considering several improvements in the theoretical description [4][5][6][7][8][9][10][11][12][13][14][15][16] and experimental analysis [17][18][19][20][21][22]. Recent experimental results from CDF [17] at Tevatron, STAR [18] and PHENIX [19] at RHIC and ALICE [20,21] and LHCb [22,23] at LHC have demonstrated that the study of photon-hadron interactions in these colliders is feasible and that the data can be used to constrain the description of the hadronic structure at high energies (For reviews see Ref.…”

Section: Introductionmentioning

confidence: 99%

Investigation of diffractive photoproduction ofJ/Ψin hadronic collisions

2014

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In this work we study the diffractive photoproduction of J/Ψ in proton-proton, proton -nucleus and nucleus -nucleus collisions at LHC energies using the color dipole formalism and different models for the forward dipole -target scattering amplitude. Our goal is to estimate the theoretical uncertainty present in the current predictions in the literature. Our results are compared with the experimental data and predictions for higher energies are presented.

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“…It is customary to parametrize 6) which is sufficient for a very good description of experimental data at |t| 0.5 GeV 2 . However, below we are also interested in an intermediate region of |t| ∼ 1 ÷ 2 GeV 2 .…”

Section: Photoproduction Process γP → J/ψpmentioning

confidence: 99%

“…The exclusive production of J/ψ mesons in proton-proton and proton-antiproton scattering has recently attracted some interest [1][2][3][4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Exclusive photoproduction of charmonia in γp → V p and pp → pV p reactions within kt-factorization approach

Cisek

Schäfer

Szczurek

2015

J. High Energ. Phys.

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Exclusive photoproduction of charmonia in γp → V p and pp → pV p reactions within k t -factorization approach The total cross section for this process is calculated for different unintegrated gluon distributions and compared with the HERA data and the data extracted recently by the LHCb collaboration. The amplitude for γp → J/ψp (γp → ψ ′ p) is used to predict the cross section for exclusive photoproduction of J/ψ (ψ ′ ) mesons in proton-proton collisions. Compared to earlier calculations we include both Dirac and Pauli electromagnetic form factors. The effect of the Pauli form factor is quantified. We discuss the role of the J/ψ and ψ ′ cc wave functions for differential distributions and corresponding ratios for ψ ′ and J/ψ. Absorption effects are taken into account and their role is discussed in detail. Different differential distributions e.g. in J/ψ (ψ ′ ) rapidity and transverse momentum are presented and compared with existing experimental data. The unintegrated gluon distribution with nonlinear effects built in and Gaussian wave functions better describe recent experimental data of the LHCb collaboration but no definite conclusion on onset of saturation can be drawn. We present our results also for the Tevatron. A good agreement with the CDF experimental data points at the midrapidity for both J/ψ and ψ ′ is achieved.

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Exclusive photoproduction at the Fermilab Tevatron and CERN LHC within the dipole picture

Cited by 88 publications

References 53 publications

Heavy quarkonium: progress, puzzles, and opportunities

Heavy quarkonium: progress, puzzles, and opportunities

Investigation of diffractive photoproduction ofJ/Ψin hadronic collisions

Exclusive photoproduction of charmonia in γp → V p and pp → pV p reactions within kt-factorization approach

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