Study of Z Bosons Produced in Association with Charm in the Forward Region

K. De Bruyn, C. J. G. Onderwater, M. van Veghel, LHCb Collaboration

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Events containing a Z boson and a charm jet are studied for the first time in the forward region of proton-proton collisions. The data sample used corresponds to an integrated luminosity of 6  fb−1 collected at a center-of-mass energy of 13 TeV with the LHCb detector. In events with a Z boson and a jet, the fraction of charm jets is determined in intervals of Z-boson rapidity in the range 2.0<y(Z)<4.5. A sizable enhancement is observed in the forwardmost y(Z) interval, which could be indicative of a valencelike intrinsic-charm component in the proton wave function.

Original languageEnglish
Article number082001
Number of pages12
JournalPhysical Review Letters
Issue number8
Publication statusPublished - 24-Feb-2022

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