Absorption of 1$P$-wave heavy charmonium ${\chi }_{c1}(1P)$ in nuclei

Abstract

We study the inclusive heavy charmonium ${\chi }_{c1}(1P)$ photoproduction from nuclei near the kinematic threshold within the collision model, based on the nuclear spectral function, for incoherent direct photon--nucleon charmonium creation processes. The model accounts for the final ${\chi }_{c1}(1P)$ absorption in nuclear medium, target nucleon binding and Fermi motion. We calculate the absolute and relative excitation functions on ${}^{12}$C and ${}^{184}$W target nuclei at near-threshold photon beam energies of 8.25--16.0 GeV, the absolute momentum differential cross sections and ratios of them for its production off these target nuclei at laboratory polar angles of 0${}^{\circ }$--10${}^{\circ }$ and for photon energy of 13 GeV as well as the A-dependences of the transparency ratios for the ${\chi }_{c1}(1P)$ at photon energy of 13 GeV within the different scenarios for its absorption cross section in nuclei. We demonstrate that the absolute and relative observables considered reveal distinct sensitivity to these scenarios. Therefore, they might be useful for the determination of this cross section from the comparison of them with the experimental data from the future experiments at the upgraded up to 22 GeV CEBAF facility, which is of crucial importance in understanding of charmonium production and suppression in high-energy heavy--ion collisions in a search for the quark-gluon plasma.

arXiv comment23 pages, 10 figures

References in corpus (53)

• Experimental and Theoretical Challenges in the Search for the Quark Gluon Plasma: The STAR Collaboration's Critical Assessment of the Evidence from RHIC Collisions
• Formation of dense partonic matter in relativistic nucleus-nucleus collisions at RHIC: Experimental evaluation by the PHENIX collaboration
• Quark Gluon Plasma an Color Glass Condensate at RHIC? The perspective from the BRAHMS experiment
• The PHOBOS Perspective on Discoveries at RHIC
• Heavy Ion Collisions: The Big Picture, and the Big Questions
• STARlight: A Monte Carlo simulation program for ultra-peripheral collisions of relativistic ions
• A new measurement of J/psi suppression in Pb-Pb collisions at 158 GeV per nucleon
• Quarkonium Feed-Down and Sequential Suppression
• Colour Deconfinement and Quarkonium Binding
• Sequential charmonium dissociation
• A Quantitative Analysis of Charmonium Suppression in Nuclear Collisions
• First measurement of near-threshold J/$\psi$ exclusive photoproduction off the proton
• J/$\psi$ suppression at forward rapidity in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• String Breaking and Quarkonium Dissociation at Finite Temperatures
• Photoproduction of charm near threshold
• Quarkonium Binding and Dissociation: The Spectral Analysis of the QGP
• Prompt and nonprompt J/$\psi$ production and nuclear modification in $p$Pb collisions at $\sqrt{s_{\text{NN}}}=8.16$ TeV
• Measurement of the ratio of prompt ${\chi }_c$ to $J/\psi$ production in $pp$ collisions at $\sqrt{s}=7$ TeV
• Critical behavior of charmonia across the phase transition: A QCD sum rule approach
• Measurement of the cross-section ratio $\sigma ({\chi }_{c2})/\sigma ({\chi }_{c1})$ for prompt ${\chi }_c$ production at $\sqrt{s}=7$ TeV
• Measurement of the relative prompt production rate of chi(c2) and chi(c1) in pp collisions at sqrt(s) = 7 TeV
• Dissociation of a Heavy Quarkonium at High Temperatures
• J/Ψproduction, $\chi$ polarization and Color Fluctuations
• An experimental review of open heavy flavor and quarkonium production at RHIC
• Are the $J/\psi$ and ${\chi }_{c}A$ Dependencies the Same?
• Study of psi' and chi_c decays as feed-down sources of J/psi hadro-production
• Measurement of inclusive $J/\psi$ suppression in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV through the dimuon channel at STAR
• Measurement of chi_c1 and chi_c2 production with sqrt(s) = 7 TeV pp collisions at ATLAS
• Attenuation of phi mesons in gamma A reactions
• Dissociation cross sections of ground-state and excited charmonia with light mesons in the quark model
• Production of the Charmonium States chic_1 and chic_2 in Proton Nucleus Interactions at sqrt{s} = 41.6 GeV
• XYZ spectroscopy at electron-hadron facilities: Exclusive processes
• Measurement of the relative yields of $\psi (2S)$ to $\psi (1S)$ mesons produced at forward and backward rapidity in $p$$+$$p$, $p$$+$Al, $p$$+$Au, and ${}^3$He$+$Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV
• Measurement of prompt $\psi$(2S) production cross sections in proton-lead and proton-proton collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}=$ 5.02 TeV
• $J/\psi$ reaction mechanisms and suppression in the nuclear medium
• Wave Function Based Characteristics of Hybrid Mesons
• Measurement of psi(2S) production cross-sections in proton-proton collisions at 7 and 13 TeV
• Charmonium production in antiproton-nucleus reactions at low energies
• Charmonium Cross Sections and the QGP
• Exclusive photoproduction of excited quarkonia in ultraperipheral collisions
• RMS and charge radii in a potential model
• Photon-Odderon interference in exclusive ${\chi }_c$ charmonium production at the Electron-Ion Collider
• J/Ψ and Ψ(2S) Production in p-Pb Collisions at 5.02 TeV with ATLAS
• The mass of charmonium in nuclear matter
• The possibility to study in-medium modification of $J/\psi$ mesons from their photoproduction on nuclei near threshold in the case of presence of the LHCb pentaquark states $P_c^{+}$ in this photoproduction
• Probing the hidden-bottom pentaquark resonances in photonuclear bottomonium production near threshold: differential observables
• Empirical regularities in the $x$--dependence of nuclear J/Psi suppression
• Probing the structure of $X(3872)$ in photoproduction
• First Measurement of Near- and Sub-Threshold $J/\psi$ Photoproduction off Nuclei
• Measurements of $\psi (2S)$ and ${\chi }_{c1}(3872)$ production within fully reconstructed jets
• XYZ spectroscopy at electron-hadron facilities III: Semi-inclusive processes with vector exchanges
• Photon-induced production of the exotic charged charmonium-like state $Z_c(3900)$ off nuclear targets and its internal structure
• Absorption of $\psi (2S)$ mesons in nuclei