Inclusive J/ψ photoproduction at the ILC within the framework of non-relativistic QCD

Xi-Jie Zhan (Department of Physics, Chongqing University, Chongqing, 401331, People’s Republic of China; Chongqing Key Laboratory for Strongly Coupled Physics, Chongqing University, Chongqing, 401331, People’s Republic of China) ; Xing-Gang Wu (Department of Physics, Chongqing University, Chongqing, 401331, People’s Republic of China; Chongqing Key Laboratory for Strongly Coupled Physics, Chongqing University, Chongqing, 401331, People’s Republic of China) ; Xu-Chang Zheng (Department of Physics, Chongqing University, Chongqing, 401331, People’s Republic of China; Chongqing Key Laboratory for Strongly Coupled Physics, Chongqing University, Chongqing, 401331, People’s Republic of China)

Based on the non-relativistic quantum chromodynamics factorization framework, we study the inclusive J/ψ photoproduction at the future high energy e + e − collider, International Linear Collider(ILC), where the initial photons come from the back-scattering of laser and electron (positron). The intermediate states, c c ¯ $$ c\overline{c} $$ (3 S 1 1 $$ {S}_1^{\left[\mathbf{1}\right]} $$ ,1 S 0 8 $$ {S}_0^{\left[\mathbf{8}\right]} $$ ,3 S 1 8 $$ {S}_1^{\left[\mathbf{8}\right]} $$ , 3 P 0 , 1 , 2 8 $$ {P}_{0,1,2}^{\left[\mathbf{8}\right]} $$ ), and resolved photoproduction processes are considered. Numerical results show that the cross section of J/ψ photoproduction at the ILC could be very large, and the single resolved pro- cess via c c ¯ $$ c\overline{c} $$ (3 S 0 8 $$ {S}_0^{\left[\mathbf{8}\right]} $$ ) intermediate state dominates primarily the production. We also present various kinematic distributions for J/ψ photoproduction. Combining the high luminosity of the collision, J/ψ photoproduction at the ILC shall provide a good platform to test the NRQCD factorization.

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  "abstracts": [
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      "source": "Springer", 
      "value": "Based on the non-relativistic quantum chromodynamics factorization framework, we study the inclusive J/\u03c8 photoproduction at the future high energy e + e  \u2212  collider, International Linear Collider(ILC), where the initial photons come from the back-scattering of laser and electron (positron). The intermediate states,   <math> <mi>c</mi> <mover> <mi>c</mi> <mo>\u00af</mo> </mover> </math>  $$ c\\overline{c} $$ (3   <math> <msubsup> <mi>S</mi> <mn>1</mn> <mfenced> <mn>1</mn> </mfenced> </msubsup> </math>  $$ {S}_1^{\\left[\\mathbf{1}\\right]} $$ ,1   <math> <msubsup> <mi>S</mi> <mn>0</mn> <mfenced> <mn>8</mn> </mfenced> </msubsup> </math>  $$ {S}_0^{\\left[\\mathbf{8}\\right]} $$ ,3   <math> <msubsup> <mi>S</mi> <mn>1</mn> <mfenced> <mn>8</mn> </mfenced> </msubsup> </math>  $$ {S}_1^{\\left[\\mathbf{8}\\right]} $$ , 3   <math> <msubsup> <mi>P</mi> <mrow> <mn>0</mn> <mo>,</mo> <mn>1</mn> <mo>,</mo> <mn>2</mn> </mrow> <mfenced> <mn>8</mn> </mfenced> </msubsup> </math>  $$ {P}_{0,1,2}^{\\left[\\mathbf{8}\\right]} $$ ), and resolved photoproduction processes are considered. Numerical results show that the cross section of J/\u03c8 photoproduction at the ILC could be very large, and the single resolved pro- cess via   <math> <mi>c</mi> <mover> <mi>c</mi> <mo>\u00af</mo> </mover> </math>  $$ c\\overline{c} $$ (3   <math> <msubsup> <mi>S</mi> <mn>0</mn> <mfenced> <mn>8</mn> </mfenced> </msubsup> </math>  $$ {S}_0^{\\left[\\mathbf{8}\\right]} $$ ) intermediate state dominates primarily the production. We also present various kinematic distributions for J/\u03c8 photoproduction. Combining the high luminosity of the collision, J/\u03c8 photoproduction at the ILC shall provide a good platform to test the NRQCD factorization."
    }
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Published on:
06 September 2022
Publisher:
Springer
Published in:
Journal of High Energy Physics , Volume 2022 (2022)
Issue 9
Pages 1-13
DOI:
https://doi.org/10.1007/JHEP09(2022)050
arXiv:
2207.01763
Copyrights:
The Author(s)
Licence:
CC-BY-4.0

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