A critical appraisal and evaluation of modern PDFs
Abstract
Here, we review the present status in the determination of parton distribution functions (PDFs) in the light of the precision requirements for the LHC in Run 2 as well as other future colliders. We provide brief descriptions of all currently available PDF sets and use them to compute cross sections for a number of benchmark processes including the Higgs boson production in gluon-gluon fusion at the LHC. We show that the differences in the predictions obtained with the various PDFs are due to particular theory assumptions such as the heavy-flavor schemes used in the PDF fits, the account of power corrections and others. We comment on PDF uncertainties in the kinematic region covered by the LHC and on averaging procedures for PDFs, such as realized by the PDF4LHC15 sets. As a result, we provide recommendations for the usage of sets of PDFs for theory predictions at the LHC.
- Authors:
- Publication Date:
- Research Org.:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1328554
- Alternate Identifier(s):
- OSTI ID: 1327811
- Report Number(s):
- JLAB-THY-16-2231; DOE/OR/23177-3779
Journal ID: ISSN 1434-6044; 471; PII: 4285
- Grant/Contract Number:
- AC05-06OR23177; FG02-97ER41922; SC0008791; 05H15GUCC1; PITN-GA- 2012-316704 (HIGGSTOOLS)
- Resource Type:
- Published Article
- Journal Name:
- European Physical Journal. C, Particles and Fields
- Additional Journal Information:
- Journal Name: European Physical Journal. C, Particles and Fields Journal Volume: 76 Journal Issue: 8; Journal ID: ISSN 1434-6044
- Publisher:
- Springer Science + Business Media
- Country of Publication:
- Germany
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Accardi, A., Alekhin, S., Blümlein, J., Garzelli, M. V., Lipka, K., Melnitchouk, W., Moch, S., Owens, J. F., Plačakytė, R., Reya, E., Sato, N., Vogt, A., and Zenaiev, O. A critical appraisal and evaluation of modern PDFs. Germany: N. p., 2016.
Web. doi:10.1140/epjc/s10052-016-4285-4.
Accardi, A., Alekhin, S., Blümlein, J., Garzelli, M. V., Lipka, K., Melnitchouk, W., Moch, S., Owens, J. F., Plačakytė, R., Reya, E., Sato, N., Vogt, A., & Zenaiev, O. A critical appraisal and evaluation of modern PDFs. Germany. https://doi.org/10.1140/epjc/s10052-016-4285-4
Accardi, A., Alekhin, S., Blümlein, J., Garzelli, M. V., Lipka, K., Melnitchouk, W., Moch, S., Owens, J. F., Plačakytė, R., Reya, E., Sato, N., Vogt, A., and Zenaiev, O. Tue .
"A critical appraisal and evaluation of modern PDFs". Germany. https://doi.org/10.1140/epjc/s10052-016-4285-4.
@article{osti_1328554,
title = {A critical appraisal and evaluation of modern PDFs},
author = {Accardi, A. and Alekhin, S. and Blümlein, J. and Garzelli, M. V. and Lipka, K. and Melnitchouk, W. and Moch, S. and Owens, J. F. and Plačakytė, R. and Reya, E. and Sato, N. and Vogt, A. and Zenaiev, O.},
abstractNote = {Here, we review the present status in the determination of parton distribution functions (PDFs) in the light of the precision requirements for the LHC in Run 2 as well as other future colliders. We provide brief descriptions of all currently available PDF sets and use them to compute cross sections for a number of benchmark processes including the Higgs boson production in gluon-gluon fusion at the LHC. We show that the differences in the predictions obtained with the various PDFs are due to particular theory assumptions such as the heavy-flavor schemes used in the PDF fits, the account of power corrections and others. We comment on PDF uncertainties in the kinematic region covered by the LHC and on averaging procedures for PDFs, such as realized by the PDF4LHC15 sets. As a result, we provide recommendations for the usage of sets of PDFs for theory predictions at the LHC.},
doi = {10.1140/epjc/s10052-016-4285-4},
journal = {European Physical Journal. C, Particles and Fields},
number = 8,
volume = 76,
place = {Germany},
year = {Tue Aug 23 00:00:00 EDT 2016},
month = {Tue Aug 23 00:00:00 EDT 2016}
}
https://doi.org/10.1140/epjc/s10052-016-4285-4
Web of Science
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