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MMHT PDFs : updates and outlook.

Harland-Lang, L.A. and Nathvani, R. and Thorne, R.S. and Martin, A.D. (2017) 'MMHT PDFs : updates and outlook.', Acta physica Polonica B., 48 (6). pp. 1011-1024.

Abstract

We present the latest results of studies within the MMHT PDF framework. We discuss the impact of the most recent ATLAS 7 TeV jet data, demonstrating that while a good fit can be achieved for individual jet rapidity bins, it is not possible to achieve a good description of the data when all bins are fitted. We examine the role that the experimental correlated systematic uncertainties play in this, and demonstrate that by simply decorrelating no more than two sources of error between rapidity bins, a remarkably improved description of the data can be achieved. We then study the impact of NNLO corrections, showing that a mild decrease in the fit quality is produced. We also present the results of including new LHC W, Z, W + c and tt¯ data on the MMHT14 PDF set, showing that a marked decrease in the s + ¯s uncertainty is in particular achieved. Finally, some discussion of the latest work towards the inclusion of the photon PDF within the MMHT framework is presented.

Item Type:Article
Full text:(VoR) Version of Record
First Live Deposit - 12 October 2017
Available under License - Creative Commons Attribution.
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.5506/APhysPolB.48.1011
Publisher statement:The intellectual rights fully remain at the author or his/her employer. They also retain the right to copy, distribute and display the published version of this Article, and to create derivative works, as long as they credit the original Article source. Articles are published under the conditions of Creative Common License, CC-BY 4.0.
Record Created:12 Oct 2017 11:58
Last Modified:12 Oct 2017 13:26

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