Preprint/Report

PUBDB-2017-01164

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Probing proton intrinsic charm in photon or Z boson production accompanied by heavy jets at the LHC

Lipatov, A. V. (Corresponding author) ; Lykasov, G. I. ; Stepanenko, Y. Y. ; Bednyakov, V. A.

2016

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Please use a persistent id in citations: doi:10.3204/PUBDB-2017-01164

Report No.: DESY-16-164; arXiv:1606.04882

Abstract: We consider an observable very sensitive to the nonzero intrinsic charm (IC) contribution to the proton density. It is the ratio between the differential cross sections of the photon or Z-boson and c-jet production in the pp collision, γ(Z)+c, and the γ(Z) and the b-jet production. It is shown that this ratio can be approximately flat or increasing at large γ(Z) transverse momenta $p_T$, and their pseudorapidities 1.5<η<2.4 if the IC contribution is taken into account. On the contrary, in the absence of the IC, this ratio decreases as pT grows. We also present the ratios of the cross sections integrated over $p_T$ as a function of the IC probability w. It is shown that these ratios are mostly independent on the theoretical uncertainties, and such predictions could therefore be much more promising for the search for the intrinsic charm signal at the LHC compared to the predictions for $p_T$ spectra, which significantly depend on these uncertainties.

Keyword(s): CERN LHC Coll ; p p: scattering ; p p: cross section ; Z0: production ; Z0: transverse momentum ; photon: production ; photon: transverse momentum ; transverse momentum: high ; transverse momentum: momentum spectrum ; jet: associated production ; jet: charm ; charm: parton ; parton: distribution function ; charm

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Contributing Institute(s):

1. LHC/CMS Experiment (CMS)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF3-611) (POF3-611)

Experiment(s):

1. LHC: Other

Appears in the scientific report 2016

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Database coverage:
; ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; Published ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Report/Journal Article Lipatov, A. V. (Corresponding author) ; Lykasov, G. I. ; Stepanenko, Y. Y. ; Bednyakov, V. A.
Probing proton intrinsic charm in photon or Z boson production accompanied by heavy jets at the LHC
Physical review / D 94(5), 053011 (2016) [10.1103/PhysRevD.94.053011]2016     Files  Fulltext Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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