Nuclear structure functions at a future electron-ion collider
Abstract
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 Q2 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 Q2. In comparison to the current knowledge, we find that the gluon PDF can be measured at an EIC with significantly reduced uncertainties.
- Authors:
-
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Univ. of Jyvaskyla (Finland); Helsinki Inst. of Physics (Finland)
- Publication Date:
- 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)
- OSTI Identifier:
- 1412759
- Alternate Identifier(s):
- OSTI ID: 1411805
- 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
- Resource 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)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Relativistic Heavy Ion Collider
Citation Formats
Aschenauer, E. C., Fazio, S., Lamont, M. A. C., Paukkunen, H., and Zurita, P. Nuclear structure functions at a future electron-ion collider. United States: N. p., 2017.
Web. doi:10.1103/PhysRevD.96.114005.
Aschenauer, E. C., Fazio, S., Lamont, M. A. C., Paukkunen, H., & Zurita, P. Nuclear structure functions at a future electron-ion collider. United States. https://doi.org/10.1103/PhysRevD.96.114005
Aschenauer, E. C., Fazio, S., Lamont, M. A. C., Paukkunen, H., and Zurita, P. Thu .
"Nuclear structure functions at a future electron-ion collider". United States. https://doi.org/10.1103/PhysRevD.96.114005. https://www.osti.gov/servlets/purl/1412759.
@article{osti_1412759,
title = {Nuclear structure functions at a future electron-ion collider},
author = {Aschenauer, E. C. and Fazio, S. and Lamont, M. A. C. and Paukkunen, H. and Zurita, P.},
abstractNote = {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 Q2 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 Q2. In comparison to the current knowledge, we find that the gluon PDF can be measured at an EIC with significantly reduced uncertainties.},
doi = {10.1103/PhysRevD.96.114005},
journal = {Physical Review D},
number = 11,
volume = 96,
place = {United States},
year = {2017},
month = {12}
}
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