HonexComb meeting #6

53/R-044 (CERN)



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We meet on zoom: https://cern.zoom.us/j/92438440525

Please ignore the indico link below

Attendance = about 27 people

1/ Introduction

  • Postdocs. We will welcome Florian Damas, from ALICE, in CMS next December.
  • The three others will go to :
  • Tensions about Z and W bosons in ATLAS vs CMS should be investigated, and maybe related to centrality.

2/ Open charm (Jiayin and Gian-Michele )

Questions during the talk

  • Slide 10 = summing the pt bins, done for Alice, you can check for consistency, the result is actually published (in HEPDATA).
  • Slide 12 = in LHCb paper, is there a comparison to theory ? See slide 5.
  • Slide 9 = in the ratio, global uncertainties cancel, good to check if the FONLL shape is correct (but not to measure the absolute cross section, of course)

Questions after the talk

  • Fabrizio = slide 2, why will it be used for? Also remember that the baryons are enhanced…
  • To compute the total cross section, we need all the particles. And we start with pp, no enhancement. Compiling for PbPb will be interesting too.
  • Giulia = what about pPb ?
  • Sure !
  • Matt = hole in rapidity between 1-2, new results from CMS at 13 TeV., https://cds.cern.ch/record/2720606
  • Johana = rapidity distribution, would be nice with other pQCD
  • Andrea = also GMVFNS
  • Sure, we’ll ask for all possible predictions (maybe a gdoc so that anybody can send suggestion on the overall project).
  • Raph = just to be sure, on slides 10-12, it is dsigma/dy, no delta pt is used, right ?
  • Yes !

3/ Concluding remarks 

Giulia: Meeting about the heavy-ion runs yesterday. Start of run 3 likely to be  Feb 2022. More information at the link https://indico.cern.ch/event/932389/ 

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