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000293992 088__ $$2arXiv$$aarXiv:1206.0274
000293992 1001_ $$0P:(DE-HGF)0$$aSzczurek, Antoni$$b0$$eCorresponding author
000293992 1112_ $$0C12-03-26.1$$2inspire$$a20th International Workshop on Deep-Inelastic Scattering and Related Subjects$$cBonn$$d2012-03-26 - 2012-03-30$$gDIS 2012$$wGermany
000293992 245__ $$aProduction of $c \bar c$ pairs at LHC: $k_t$-factorization and double-parton scattering
000293992 260__ $$aHamburg$$bDeutsches Elektronen-Synchrotron, DESY$$c2012
000293992 300__ $$a809-814
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000293992 520__ $$aWe discuss charm production at LHC. The production of single $c \bar c$ pairs is calculated in the $k_t$-factorization approach. We use several unintegrated gluon distributions from the literature. Differential distributions for several charmed mesons are presented and compared to recent results of the ALICE and LHCb collaborations. Some missing strength can be observed. Furthermore we discuss production of two $c \bar c$ pairs within a simple formalism of double-parton scattering (DPS). Surprisingly large cross sections, comparable to single-parton scattering (SPS) contribution to $c \bar c$ production, are predicted for LHC energies.
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000293992 650_7 $$2INSPIRE$$acharm: production
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000293992 650_7 $$2INSPIRE$$ascattering
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000293992 650_7 $$2INSPIRE$$aCERN SPS
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000293992 7870_ $$0PUBDB-2016-00663$$aBrock, Ian$$dHamburg : Deutsches Elektronen-Synchrotron, DESY, Hamburg, 2013$$iIsPartOf$$rDESY-PROC-2012-02$$tProceedings, 20th International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS 2012)
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