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CMS mW Hackathon Open Session
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US/Eastern
Kolker Room (26-414) (Massachusetts Institute of Technology, Cambridge, MA, USA)
Kolker Room (26-414)
Massachusetts Institute of Technology, Cambridge, MA, USA
Christoph Paus
(Massachusetts Inst. of Technology (US)),
Johannes Michel
(MIT CTP),
Josh Bendavid
(Massachusetts Inst. of Technology (US)),
Lorenzo Bianchini
(Universita & INFN Pisa (IT)),
Michail Bachtis
(University of California Los Angeles (US))
Registration
CMS mW Hackathon Open Session Registration
Participants
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Open Session Talks Kolker Room (26-414)
Kolker Room (26-414)
Massachusetts Institute of Technology, Cambridge, MA, USA
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Wish List from ExperimentalistsSpeaker: Kenneth Long (Massachusetts Inst. of Technology (US))
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Flash talk: Collins-Soper kernel from lattice QCD at the physical pion mass
Collins-Soper (CS) evolution kernel is necessary to relate transverse-momentum-dependent parton distribution functions (TMDPDFs) at different scales. The kernel's behavior at high as well as low transverse momenta $q_T$ may lead to sizable variations in the uncertainty estimates for $m_W$. For $q_T \sim \Lambda_\mathrm{QCD}$, the CS kernel is non-perturbative; the determination of the CS kernel in the non-perturbative regime can only be done through experiment or first-principles calculations. Here, preliminary results are presented for a new calculation of the non-perturbative CS kernel using lattice QCD and Large-Momentum Effective Theory. This work improves the control over and reduces the systematic uncertainties compared to previous lattice QCD calculations, and is the first computation at close-to-physical valence and sea pion masses 𝑚𝜋≈140 MeV.
Speaker: Artur Avkhadiev
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Theory Keynote Talk (Special CTP Seminar): The W-boson Mass Puzzle: Examining the Interplay Between Theory and Experiment Kolker Room (26-414)
Kolker Room (26-414)
Massachusetts Institute of Technology, Cambridge, MA, USA
Recently, the Tevatron CDF collaboration reported a highly precise
measurement of the W-boson mass with an uncertainty of 0.1 per-mille.
This measurement is in significant tension with Standard Model global
fits and earlier measurements. The W-boson mass is an input parameter in
the Standard Model, and its determination relies heavily on theory
predictions. However, these predictions have uncertainties that are
orders of magnitude larger, which raises the question in how far theory
uncertainties enter the measurement and translate into W-mass
uncertainties. In this talk, we discuss the challenges in accurate
theory predictions and their impact on the W-boson mass measurements. We
explore the significance of the tension between the CDF measurement and
previous results, and discuss potential avenues for improving theory
predictions in future measurements.Speaker: Tobias Neumann -
Open Session Talks: Discussion Kolker Room (26-414)
Kolker Room (26-414)
Massachusetts Institute of Technology, Cambridge, MA, USA
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Discussion
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15:25
Picture Time! Kolker Room (26-414)
Kolker Room (26-414)
Massachusetts Institute of Technology, Cambridge, MA, USA
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15:30
Coffee Break Kolker Room (26-414)
Kolker Room (26-414)
Massachusetts Institute of Technology, Cambridge, MA, USA
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Experiment Keynote Talk (Special LNS Seminar): Precision mass measurements with the CMS experiment Kolker Room (26-414)
Kolker Room (26-414)
Massachusetts Institute of Technology, Cambridge, MA, USA
Speaker: Markus Seidel (Riga Technical University (LV)) -
Open Session Talks: Discussion Kolker Room (26-414)
Kolker Room (26-414)
Massachusetts Institute of Technology, Cambridge, MA, USA
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Discussion
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18:30
Hackathon Dinner Shy Bird
Shy Bird
390 Third St, Cambridge, MA 02142
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