$J/\psi$ Pair Hadroproduction at Next-to-Leading Order in Nonrelativistic-QCD at CMS
نویسندگان
چکیده
Abstract We perform a complete study on the $J/\psi$ pair hadroproduction at
next-to-leading order (NLO) in nonrelativstic-QCD (NRQCD)
framework with of $c\bar{c}$ either ${}^{3}S_1^{[1]}$ or
${}^{1}S_0^{[8]}$ fock state. It is found that ${}^{1}S_0^{[8]}$
channel contribution at NLO essential. Our results indicate that
for CMS, NRQCD predictions can not describe experimental
data all, and total cross section predicted by is
smaller than experimental data an magnitude. So new
mechanisms are needed to understand CMS for pair
production. Content from this work may be used under terms Creative Commons Attribution 3.0 licence. Any further distribution must maintain attribution author(s) title work, journal citation DOI. Article funded SCOAP3 published licence Chinese Physical Society Institute High Energy Physics Academy Science Modern Sciences IOP Publishing Ltd.
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ژورنال
عنوان ژورنال: Chinese Physics C
سال: 2023
ISSN: ['1674-1137', '2058-6132']
DOI: https://doi.org/10.1088/1674-1137/ace521