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pTZ and pTW theory meeting

→ Europe/Zurich
31/S-027 (CERN)

31/S-027

CERN

10
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Description

One of the hot topics in the program of EW precision studies at LHC is the W boson mass measurement from the study of charged current Drell-Yan observables.
This measurement strongly relies on a very precise knowledge of the gauge boson transverse momentum spectrum and, since ptW is quite poorly measured, an important source of information is offered by the ptZ distribution in neutral current Drell-Yan.
The transfer of information from neutral- to charged-current Drell-Yan is currently one of the bottlenecks in the MW determination.

In the meeting we will start to address some of the questions which naturally emerge:
-what is the most precise analytical prediction for ptZ ?
-how do Shower Monte Carlo codes predict ptZ ?
-which are the best analytical and Monte Carlo predictions for the ratio  ptW/ptZ ?
-how do we assess the theoretical uncertainty on the ratio ptW/ptZ ?

 

    • 15:00 → 15:30
      Introduction 30m
      Speaker: Alessandro Vicini (Università degli Studi e INFN Milano (IT))
      intro-ptWptZ-25jan18.pdf
    • 15:30 → 15:40
      review of approximations: ptV at NNLO-QCD 10m
      Speaker: Alexander Yohei Huss (CERN)
      ahuss.pdf
    • 15:40 → 15:50
      review of approximations: Radish 10m
      Speaker: Emanuele Re (CERN)
      2018_01_25.pdf
      talk.pdf
    • 15:50 → 16:00
      review of approximations: resummation at NNLO+NNLL QCD 10m
      Speaker: Giancarlo Ferrera (University of Milan)
      mw-ws-cern18.pdf
    • 16:00 → 16:10
      review of approximations: Geneva 10m
      Speaker: Simone Alioli (Universita & INFN, Milano-Bicocca (IT))
      Geneva_Alioli.pdf
    • 16:10 → 16:20
      review of approximations: QCD and EW matching in Sherpa 10m
      Speaker: Marek Schoenherr (CERN)
      LHCEWWG_MarekSchoenherr.pdf
    • 16:20 → 16:30
      review of approximations : higher orders in Sherpa and bottom contributions 10m
      Speaker: Frank Martin Krauss
      CERN_Wmass18.pdf
    • 16:30 → 16:35
      review of approximations: bottom contributions with POWHEG/MC@NLO 5m
      Speaker: Alessandro Vicini (Università degli Studi e INFN Milano (IT))
      Vicini_Zbb.pdf
    • 16:35 → 16:45
      review of approximations: QCD+EW matching in POWHEG 10m
      Speaker: Fulvio Piccinini (Universita degli studi di Pavia e INFN (IT))
    • 17:00 → 18:00
      discussion and planning of future studies 1h
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