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SUMMARY:Parton Distributions in the Era of Precision Physics and Beyond
DTSTART:20260521T083000Z
DTEND:20260521T103000Z
DTSTAMP:20260515T175600Z
UID:indico-event-13768@indico.ijclab.in2p3.fr
DESCRIPTION:Speakers: Tanjona Rabemananjara\n\nRecent decades have seen a 
 remarkable increase in the precision of measurements at hadron colliders\,
  culminating in the Large Hadron Collider (LHC) operating as a precision l
 aboratory for the Standard Model (SM) and for indirect searches for physic
 s beyond it. Parton Distribution Functions (PDFs)\, which encode the quark
  and gluon structure of the proton\, have become a central ingredient in t
 heoretical predictions for collider observables. Achieving the full scient
 ific potential of the precision frontier therefore requires PDF determinat
 ions with unprecedented accuracy\, robustness\, and reliability.\nIn this 
 talk\, I will review the current state-of-the-art in PDF extractions from 
 global analyses of collider and fixed-target data\, highlighting recent me
 thodological advances in perturbative calculations up to N3LO\, statistica
 l inference\, and machine-learning-based parametrizations. I will discuss 
 how modern PDF determinations are validated through increasingly sophistic
 ated techniques\, including closure and future tests studies\, which provi
 de quantitative assessments of methodological biases\, uncertainty estimat
 es\, and extrapolation capabilities in realistic High-Luminosity LHC scena
 rios.\nI will also examine the interplay between proton structure and sear
 ches for new physics. In particular\, I will discuss how PDF uncertainties
  impact precision measurements and effective-field-theory interpretations 
 in the high-energy tails of collider distributions\, as well as the potent
 ial risk of partially absorbing beyond-the-Standard-Model signals into the
  PDF determination itself. Finally\, I will outline future directions towa
 rds statistically consistent frameworks\, paving the way for robust precis
 ion phenomenology at the HL-LHC and future collider facilities.\n\nhttps:/
 /indico.ijclab.in2p3.fr/event/13768/
LOCATION:100/2-A201 - Salle A201 (IJCLab)
URL:https://indico.ijclab.in2p3.fr/event/13768/
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