Welcome to the Honexcomb web

HonexComb is initiated thanks to the Strong 2020 initiative. The original submitted work package (WP19, JRA1, called LHC-Combine) can be found here. Extract:

We believe that the time has come to improve communication between the four collaborations in the heavy-ion field, and establish an LHC data-combination working group. These objectives can be split into two tasks: The animation of a common forum to ensure a regular communication between the four collaborations; and cross-experiment combination work, such as detailed comparisons of techniques or optimized statistical combination of results, leading to common publications. (in. Strong-2020 proposal)

Communication tools

Possible combination topics

At the time of the proposal, four topics were listed, then reviewed during the first meeting, identifying Possible subjects of combination:

  • Light-by-light scattering
    • Possible: Final run 2 combination of light-by-light scattering
    • Action: discuss needs with nPDF makers
  • Constraining nPDF
    • Possible: Would we gain in combining the lower statistics signals, e.g. Z or W bosons in the forward region from LHCb and Alice?
  • Heavy flavours
    • Possible: Total cross section of charm
    • Possible: Pseudo-rapidty dependences
    • Possible: Baryon/meson ratio, would be nice from LHCb
    • Possible: Open beauty > LUT from the theory?
  • Quarkonia
    • Possible: Upsilons, a nice combination paper for run 3? Intriguing comparison btw ATLAS and CMS, to be followed up…

Other subjects, proposed in meetings

  • Possible: X(3872) ?
  • Possible: Jets ?
  • Possible: nPDF from UPC ?

Possible other activities

Observables

  • On-going activity about Glauber baseline
  • Action: Review the multiplicity definitions

Others

  • Action: Popularize the top quark studies
  • Possible: Make and endorse summary plots?

Collaboration contacts

  • In ALICE: Alexander Kalweit
  • In ATLAS: Iwona Grabovska-Bold
  • In CMS: Raphael Granier de Cassagnac
  • In LHCb: Giulia Manca

Material

  • Oct. 2019: Strong-2020 kick-off meeting indico, including honexcomb contribution.
  • Mar. 2018: The original submitted work package (WP19, JRA1, LHC-Combine): here.
  • Nov. 2017: early proposal: slides

Acknowledgements

This project has received funding from the European Union's horizon 2020 research and innovation programme under grant agreement no 824093, aka STRONG 2020. Logos : square, banner

Honexcomb Web Utilities

Topic attachments
I Attachment History Action Size Date Who Comment
PDFpdf 2017.11.01.HONEXCOMB-Talk.pdf r1 manage 567.0 K 2020-01-28 - 12:52 RaphaelGranierDeCassagnac  
PDFpdf 2018_-_LHCCombineOnly.pdf r1 manage 93.2 K 2020-01-17 - 15:22 RaphaelGranierDeCassagnac  
PNGpng STRONG2020-Banner.png r1 manage 76.6 K 2020-01-28 - 12:52 RaphaelGranierDeCassagnac  
PNGpng STRONG2020.png r1 manage 72.3 K 2020-01-28 - 12:52 RaphaelGranierDeCassagnac  
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Topic revision: r13 - 2020-02-19 - RaphaelGranierDeCassagnac
 
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