Photoproduction of the heavy quarkonium at the ILC

Abstract

We study the photoproduction of the heavy quarkonium at the future International Linear Collider (ILC) within the nonrelativistic QCD theory. We focus on the production channel via the subprocess $\gamma \gamma \to |[Q\overline{Q^{\prime }}{]}_1(n)>+Q^{\prime }+\bar{Q}$, where $Q$ and $Q^{\prime }$ stand for heavy $c$- or $b$-quark, respectively. $|[Q\overline{Q^{\prime }}{]}_1(n)>$ stands for color-singlet $S$-wave quarkonium, i.e., ${\eta }_c(|[c\bar{c}{]}_1{(}^1{S}_0)>)$, $J/\psi (|[c\bar{c}{]}_1{(}^3{S}_1)>)$, $B_c(|[c\bar{b}{]}_1{(}^1{S}_0)>)$, $B_c^{\ast }(|[c\bar{b}{]}_1{(}^3{S}_1)>)$, ${\eta }_b(|[b\bar{b}{]}_1{(}^1{S}_0)>)$, and ${\rm Y}(|[b\bar{b}{]}_1{(}^3{S}_1)>)$, respectively. To improve the calculation efficiency, we adopt the improved helicity amplitude approach to deal with the difficulty of calculating the expressions for the yields when the quark masses cannot be neglected. Total and differential photoproduction cross sections, together with their uncertainties, have been presented. It is noted that sizable amount of $|c\bar{c}>$-charmonium and $|c\bar{b}>$-quarkonium events can be generated at the ILC. More specifically, we predict $(2.8_{-0.7}^{+1.0})\times 10^6$ ${\eta }_c$, $(5.4_{-1.3}^{+1.9})\times 10^6$ $J/\psi$, $(8.3_{-1.8}^{+2.2})\times 10^4$ $B_c$, $(4.3_{-0.9}^{+1.1})\times 10^5$ $B_c^{\ast }$, $(9.0_{-1.4}^{+1.7})\times 10^3$ ${\eta }_b$, and $(1.6\pm 0.3)\times 10^4$ ${\rm Y}$ events to be generated in one operation year at the ILC under the condition of $\sqrt{S}=500$ GeV and $\mathcal{L}\simeq 10^{36}$cm${}^{-2}$s${}^{-1}$.

arXiv comment11 pages, 6 figures. Numerical results updated

References in corpus (22)

• Rigorous QCD Analysis of Inclusive Annihilation and Production of Heavy Quarkonium
• Mesons with Beauty and Charm: Spectroscopy
• Quarkonium Wave Functions at the Origin
• Improving the Weizsäcker-Williams Approximation in Electron-Proton Collisions
• A Systematic All-Orders Method to Eliminate Renormalization-Scale and Scheme Ambiguities in PQCD
• Eliminating the Renormalization Scale Ambiguity for Top-Pair Production Using the Principle of Maximum Conformality
• Scale Setting Using the Extended Renormalization Group and the Principle of Maximum Conformality: the QCD Coupling Constant at Four Loops
• The Renormalization Scale-Setting Problem in QCD
• BCVEGPY: An Event Generator for Hadronic Production of the B_c Meson
• Physics Impact of GigaZ
• Self-Consistency Requirements of the Renormalization Group for Setting the Renormalization Scale
• Probing nonrelativistic QCD factorization in polarized J/psi photoproduction at next-to-leading order
• Production of $B_c$ or ${\bar{B}}_c$ meson and its excited states via $\bar{t}$-quark or $t$-quark decays
• Reanalysis of the BFKL Pomeron at the next-to-leading logarithmic accuracy
• $Z_0$ Boson Decays to $B_c^{(\ast )}$ Meson and Its Uncertainties
• Production of the $P$-Wave Excited $B_c$-States through the $Z^0$ Boson Decays
• Photoproduction of $J/\psi$ in association with a $c\bar{c}$ pair
• $J/\psi +c+\bar{c}$ Photoproduction in $e^{+}{e}^{-}$ Scattering
• $J/\psi +{\chi }_{cJ}$ Production at the $B$ Factories under the Principle of Maximum Conformality
• Spin-Flip Interactions and the Puzzle of psi's Polarization at Tevatron
• A New Approach for Analytic Amplitude Calculations
• Dominant Spin-Flip Effects for the Hadronic Produced $J/\psi$ Polarization at TEVATRON

Cited by in corpus (8)

• Photoproduction of doubly heavy baryon at the ILC
• Heavy quarkonium photoproduction in ultrarelativistic heavy ion collisions
• Photoproduction of the $B_c^{(\ast )}$ Meson at the LHeC
• The prompt $J/\psi$ production in Association with a $c\bar{c}$ Pair within the Framework of Non-relativistic QCD via photon-photon collision at the International Linear Collider
• P-wave excited $B_c^{\ast \ast }$ meson photoproduction at the LHeC
• Photoproduction of the $B_c$ meson at the future $e^{+}{e}^{-}$ colliders
• ${\eta }_Q$ meson photoproduction in ultrarelativistic heavy ion collisions
• Production of the $B_c$ meson at the CEPC