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Searching for intrinsic charm in the proton at the LHC

Abstract : Despite rather long-term theoretical and experimental studies, the hypothesis of the non-zero intrinsic (or valence-like) heavy quark component of the proton distribution functions has not yet been confirmed or rejected. The LHC with $pp$-collisions at $\sqrt{s}=$ 7--14 TeV will obviously supply extra unique information concerning the above-mentioned component of the proton. To use the LHC potential, first of all, one should select the parton-level (sub)processes (and final-state signatures) that are most sensitive to the intrinsic heavy quark contributions. To this end inclusive production of $c(b)$-jets accompanied by photons is considered. On the basis of the performed theoretical study it is demonstrated that the investigation of the intrinsic heavy quark contributions looks very promising at the LHC in processes such as $pp\rightarrow \gamma+ c(b)+X$.
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http://hal.in2p3.fr/in2p3-00823443
Contributor : Emmanuelle Vernay <>
Submitted on : Friday, May 17, 2013 - 8:06:56 AM
Last modification on : Monday, July 20, 2020 - 9:18:25 AM

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V.A. Bednyakov, M.A. Demichev, G.I. Lykasov, T. Stavreva, M. Stockton. Searching for intrinsic charm in the proton at the LHC. Physics Letters B, Elsevier, 2014, 728, pp.602-606. ⟨10.1016/j.physletb.2013.12.031⟩. ⟨in2p3-00823443⟩

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