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Logarithmic corrections for jet production at the LHC
by Emmet P. Byrne
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Submission summary
| Authors (as registered SciPost users): | Emmet Byrne |
| Submission information | |
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| Preprint Link: | https://arxiv.org/abs/2110.08017v1 (pdf) |
| Date submitted: | 2021-10-23 12:56 |
| Submitted by: | Byrne, Emmet |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 50th International Symposium on Multiparticle Dynamics (ISMD2021) |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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Abstract
Several important processes and analyses at the LHC are sensitive to higher-order perturbative corrections beyond what can currently be calculated at fixed order. One important class of logarithmic corrections are those which appear when the centre-of-mass energy of a QCD collision is much larger than the transverse momenta of the observed jets. We describe the High Energy Jets (HEJ) framework, which includes the dominant high-energy logarithms to provide all-order predictions for several LHC processes including Higgs, $W$, or $Z$ boson production in association with jets. We will summarise some recent developments, in particular the first matching of HEJ to a NLO calculation.
Current status:
Reports on this Submission
Report #1 by Anonymous (Referee 1) on 2022-1-31 (Invited Report)
- Cite as: Anonymous, Report on arXiv:2110.08017v1, delivered 2022-01-30, doi: 10.21468/SciPost.Report.4284
Strengths
1- This paper is clearly written and scientifically correct
2 - The work that is reported is impressive and relevant for precision calculations of jet observables in the Regge kinematics
Weaknesses
none
Report
In this contribution the author reports on the High Energy Jets (HEJ) framework that enables a systematic resummation of a class of high energy logarithms for various LHC Boson-jet observables in the Regge kinematics. This is an interesting and impressive work that is well presented in this proceedings. In my opinion it meets the journal requirements for publication .
I 'd just have a couple of comments: - I think figure 1 is referred to after figure 2 in the text. The order of figures should be corrected in the revised version.
- In figure 2, the NLO (red) curve seems to provide a similar description of the data to that of the resummed HEJ2 NLO curve. HEJ2 NLO seems to work better at high pt but I would expect the resummation to be more relevant at lower pt. Can the author comment on this?
Requested changes
- I think figure 1 is referred to after figure 2 in the text. The order of figures should be corrected in the revised version.
- In figure 2, the NLO (red) curve seems to provide a similar description of the data to that of the resummed HEJ2 NLO curve. HEJ2 NLO seems to work better at high pt but I would expect the resummation to be more relevant at lower pt. Can the author comment on this?
Author: Emmet Byrne on 2022-02-03 [id 2153]
(in reply to Report 1 on 2022-01-31)Thank you for your comments and your careful reading of the submission.
Regarding your two comments:
-Yes. In the revised manuscript I have maintained the order of the figures, but I have removed the initial reference to figure 2 so the figures now appear in the order they are mentioned.
-The high-energy resummation implemented by HEJ does not control evolution in pt so there is no systematic correlation between pt and the size of the high-energy corrections. This is partly compensated through the addition of NLO effects (as seen in the shape of the corrections in Fig. 1(a) for example). Similarly, the impact of resummation (including multiplicities >=4j) at large pt is absent in the pure NLO prediction which is inclined to drop below data, but this is compensated for by matching NLO and HE effects. Regarding this comment, I have modified the last two sentences of section 4.