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<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.
Study of Z Bosons Produced in Association with Charm in the Forward Region / R. Aaij, A.S.W.A.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 128:8(2022 Feb 24), pp. 082001.082001-1-082001.082001-12. [10.1103/PhysRevLett.128.082001]
Study of Z Bosons Produced in Association with Charm in the Forward Region
D. Marangotto;A. Merli;N. Neri;
2022
Abstract
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<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.| File | Dimensione | Formato | |
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PhysRevLett.128.082001.pdf
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