PDF4LHC 2024 meeting

2 Dec 2024, 09:00 → 3 Dec 2024, 16:00 Europe/Zurich

4/S-030 (CERN)

Amanda Sarkar (University of Oxford (GB))

General PDF4LHC meeting. 

Monday 2 December

Reports from experiments

1 Introduction

2 News from ATLAS

Speaker: Eimear Isobel Conroy (University of Oxford (GB))

ATLASReport.pdf

3 News from LHCb, including EW perspective

Speaker: Nathan Grieser (University of Cincinnati (US))

PDF4LHC_LHCb.pdf

News from experiments focus on electroweak

4 CMS precision EW

Speaker: Josh Bendavid (Massachusetts Inst. of Technology (US))

CMSPrecisionEWPdfs-Dec2-2024.pdf

5 ATLAS precision EW

Speaker: Maarten Boonekamp (Université Paris-Saclay (FR))

pdf4lhc_021224.pdf

6 Discussion

11:10 Coffee

Reports from PDF fitters

7 ABMP update

Speaker: Maria Vittoria Garzelli (Hamburg University (DE))

sempdflhc.pdf

8 NNPDF update

Speaker: Juan Rojo Chacon (Nikhef National institute for subatomic physics (NL))

rojo-PDF4LHC-NNPDFrev.pdf

9 MSHT update

Speaker: Robert Samuel Thorne (University College London (UK))

PDF4LHC2024.pdf

10 CT update

Speaker: Prof. Pavel Nadolsky (Southern Methodist University/Michigan State University)

oc02_ct_update.pdf

12:55 Lunch

11 NNPDF alphas

Speaker: Roy Stegeman

RS_PDF4LHC.pdf

New ideas: beyond NNLO

12 QED modifications to the cross section predictions at NNLO and aN3LO

Speaker: Dr TIMOTHY J HOBBS (Argonne National Laboratory)

PDF4LHC24_QED_Hobbs_pub.pdf

13 3-loop heavy flavour contributions

Speaker: Prof. Johannes Bluemlein

PDF4LHC24.pdf

14 aN3LO MSHT/NNPDF combination

Speaker: Giacomo Magni (Nikhef, VU Amsterdam)

PDF4LHC_an3lo_02_12_24.pdf

15:20 Coffee

15 CT on current status of N3LO

Speaker: Prof. Pavel Nadolsky (Southern Methodist University/Michigan State University)

oc02_nnloplus.pdf

16 Discussion

New ideas

17 NNLO residual PDFS for massive VFN schemes at the LHC

Speaker: Marco Guzzi (Kennesaw State University)

Subtraction-PDFs-Dec-2-2024.pdf

18 Recent developments in the machine learning modelling of PDFs

Speaker: Dr TIMOTHY J HOBBS (Argonne National Laboratory)

Hobbs-ML_PDF4LHC_Dec-24_pub.pdf

19 MCMC for uncertainties

Speaker: Aleksander Kusina

kusina_PDF4LHC2024.pdf

Tuesday 3 December

New ideas: New ideas: closure, tolerance, uncertainties

20 Bayesian studies of the MC replica method

Speakers: James Moore, James Moore

pdf4lhc2024.pdf

21 Bayesian combination and determination of PDFs

Speaker: Mark Costantini

new_methodology.pdf

22 MSHT: closure tests and comparison to the neural net approach

Speaker: Dr Lucian Alexander Harland-Lang (University College London)

lhl_PDF4LHC_closure.pdf

23 Closure tests with inconsistent data

Speaker: Stefano Forte (Università degli Studi e INFN Milano (IT))

pdf4lhcict.pdf

24 Discussion

25 Uncertainties on uncertainties

Speaker: Matthew Reader

PDF4LHC20242_latest.pdf

11:05 Coffee

26 Classification and combination of PDFs using polynomial approximators

Speakers: Aurore Courtoy (Instituto de Física, UNAM), Aurore Courtoy (IFPA)

PDF4LHC_winter_24_AC.pdf

27 The Gaussian Mixture Model

Speaker: Kirtimaan Ajaykant Mohan

K_Mohan_PDF4LHC_2024_12_03.pdf

28 Gaussian processes

Speaker: Tommaso Giani (Nikhef National institute for subatomic physics (NL))

giani.pdf

29 Neural nets

Speakers: Luigi Del Debbio (Unknown), Luigi Del Debbio (The University of Edinburgh (GB))

CERN24c.pdf

30 Discussion

possible extension