Dimuons from neutrino-nucleus collisions in the semi-inclusive DIS approach
Helenius, I., Paukkunen, H., & Yrjänheikki, S. (2024). Dimuons from neutrino-nucleus collisions in the semi-inclusive DIS approach. Journal of High Energy Physics, 2024(9), Article 43. https://doi.org/10.1007/JHEP09(2024)043
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Journal of High Energy PhysicsDate
2024Copyright
© The Authors. Article funded by SCOAP3.
We present a next-to-leading order perturbative QCD calculation of dimuon production in neutrino-nucleus collisions. This process is typically calculated by assuming it to be proportional to inclusive charm production, which requires an effective acceptance correction to take the experimental cuts on the decay-muon kinematics into account. Here, we instead compute the dimuon production cross section directly as a convolution of semi-inclusive deep inelastic scattering to produce charmed hadrons, and a decay function fitted to e+e− data to produce a muon from the charmed hadrons. The presented approach is in a good agreement with available experimental data and will serve as a starting point for higher-order QCD calculations without an external acceptance correction. The uncertainties arising from the decay function and scale dependence are sizeably smaller than those from the nuclear parton distribution functions. We also calculate the effective acceptances within our approach and compare them to those usually used in global fits of parton distribution functions, finding differences of the order of 10 %, depending on the kinematics, perturbative order, and applied parton distributions.
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Springer NatureISSN Search the Publication Forum
1126-6708Keywords
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https://converis.jyu.fi/converis/portal/detail/Publication/243064835
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European Commission; Research Council of FinlandFunding program(s)
ERC Advanced Grant; Academy Research Fellow, AoF; Centre of Excellence, AoF
The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.
Additional information about funding
We acknowledge the financial support from the Magnus Ehrnrooth foundation (S.Y.), the Research Council of Finland Project No. 331545 (I.H.), and the Center of Excellence in Quark Matter of the Research Council of Finland, project 346326. The reported work is associated with the European Research Council project ERC-2018-ADG-835105 YoctoLHC.License
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