skip to main content

DOE PAGESDOE PAGES

This content will become publicly available on December 7, 2018

Title: Nuclear structure functions at a future electron-ion collider

The quantitative knowledge of heavy nuclei's partonic structure is currently limited to rather large values of momentum fraction x { robust experimental constraints below x ~ 10 -2 at low resolution scale Q 2 are particularly scarce. This is in sharp contrast to the free proton's structure which has been probed in deep inelastic scattering (DIS) measurements down to x ~ 10 -5 at perturbative resolution scales. The construction of an Electron-Ion Collider (EIC) with a possibility to operate with a wide variety of nuclei, will allow one to explore the low-x region in much greater detail. In the present paper we simulate the extraction of the nuclear structure functions from measurements of inclusive and charm reduced cross sections at an EIC. The potential constraints are studied by analyzing simulated data directly in a next-to-leading order global fit of nuclear parton distribution functions based on the recent EPPS16 analysis. A special emphasis is placed on studying the impact an EIC would have on extracting the nuclear gluon PDF, the partonic component most prone to non-linear e ects at low Q 2. In comparison to the current knowledge, we find that the gluon PDF can be measured at an EIC withmore » significantly reduced uncertainties.« less
Authors:
 [1] ;  [1] ;  [1] ;  [2] ;  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Univ. of Jyvaskyla (Finland); Helsinki Inst. of Physics (Finland)
Publication Date:
Report Number(s):
BNL-114732-2017-JA
Journal ID: ISSN 2470-0010; PRVDAQ; R&D Project: PO 004; KB0202012; TRN: US1800351
Grant/Contract Number:
SC0012704
Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 96; Journal Issue: 11; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Research Org:
Brookhaven National Lab. (BNL), Upton, NY (United States). Relativistic Heavy Ion Collider (RHIC)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Relativistic Heavy Ion Collider
OSTI Identifier:
1412759
Alternate Identifier(s):
OSTI ID: 1411805