Abstract
The Electron-Ion Collider (EIC) at Brookhaven National Laboratory will be a precision Quantum Chromodynamics machine that will enable a vast physics program with electron+proton/ion collisions across a broad center-of-mass range. Measurements of hard probes such as heavy flavor in deep inelastic scatterings will be an essential component to the EIC physics program and are one of the detector R\&D driving aspects. In this paper we study the projected statistical precision of open charm hadron production through exclusive hadronic channel reconstruction with a silicon detector concept currently being developed using a PYTHIA-based simulation. We further study the impact of possible intrinsic charm in the proton on projected data, and estimate the constraint on the nuclear gluon parton distribution function (PDF) from the charm structure functions $F_{2}^{c\overline{c}}$ in $e$+Au collisions using a Bayesian PDF re-weighting technique. Our studies show the EIC will be capable delivering an unprecedented measurement of charm hadron production across a broad kinematic region and will provide strong constraints to both intrinsic charm and nuclear gluon PDFs.
Highlights
The Electron-Ion Collider (EIC), a US-based facility planned to be constructed at the current Relativistic HeavyIon Collider (RHIC) facility at Brookhaven National Laboratory, will be a state-of-the-art quantum chromodynamics (QCD) laboratory [1,2,3]
We report the impact on these measurements from intrinsic charm and the constraints these measurements will have on nuclear gluon parton distribution function (PDF)
We note here that the pointing resolution is expected to be significantly better in the r − φ dimensions than the z dimension in the forward and backward rapidity regions, and we only consider topological variables in the transverse plane
Summary
The Electron-Ion Collider (EIC), a US-based facility planned to be constructed at the current Relativistic HeavyIon Collider (RHIC) facility at Brookhaven National Laboratory, will be a state-of-the-art quantum chromodynamics (QCD) laboratory [1,2,3]. Measurements of charm hadron production will be able to constrain PDFs at large parton longitudinal momentum fraction, xp This will provide information to elucidate the EMC effect and short range correlations from e þ A collisions at large xp [6]. In this paper we report the statistical projections of charm production in e þ p=Au collisions with exclusive hadronic decays utilizing the secondary vertexing capabilities provided from a silicon vertex detector aimed for future EIC experiments. We envision that future EIC experiments with significant statistics over different collision energies and nuclei species will allow us to conduct extensive measurements on various differential charm hadron production, e.g., anticharm-to-charm ratio, charm hadrochemistry, and charm fragmentation in jets, to offer insights towards the understanding of these final state effects. IV and V the PDF sets used were generated from the LHAPDF 6 library [23]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
