Conveners
Precision Electroweak Physics: Tuesday morning
- Richard Hill (Perimeter Institute)
Precision Electroweak Physics: Wednesday morning
- Marco Verzocchi (Fermilab)
Mr
Charles Glaser
(University of Virginia)
01/08/2017, 10:45
Precision Electroweak Physics
Presentation
The PEN collaboration performed a precision measurement of the $\pi^+\rightarrow e^+\nu_e(\gamma)$ branching ratio with the goal of obtaining a relative uncertainty of $5\times10^{-4}$ or better at the Paul Scherrer Institute. A precision measurement of the branching ratio $\Gamma(\pi\rightarrow e\bar{\nu}(\gamma))/\Gamma(\pi\rightarrow \mu \bar{\nu}(\gamma))$ can be used to give mass...
Will DiClemente
(University of Pennsylvania)
01/08/2017, 11:10
Precision Electroweak Physics
Presentation
We present a study of same-sign W±W± boson pairs produced in association with two or more jets in pp collisions at √s = 13 TeV. Same-sign W±W± production is sensitive to the mechanism of electroweak symmetry breaking and physics beyond the standard model, particularly through vector boson scattering (VBS) production. Unlike opposite-sign WW production, in same-sign W±W± production the...
Jay Lawhorn
(Caltech)
01/08/2017, 11:35
Precision Electroweak Physics
Presentation
Measurements of single W and Z boson inclusive and differential production cross sections with the CMS detector are presented. Measurements of Drell-Yan cross sections in the mass range of 15 to 3000 GeV are also reported. The results are compared to predictions from different Monte Carlo generators.
Dr
Breese Quinn
(University of Mississippi)
02/08/2017, 10:45
Precision Electroweak Physics
Presentation
We present the measurement of forward-backward charge asymmetry AFB in pp̄ → Z/γ∗ → μ+μ− events using 9.7 fb−1 of pp̄ data collected at sqrt s = 1.96 TeV by the D0 detector at the Fermilab Tevatron collider. AFB is measured as a function of the invariant mass of the dilepton system to extract the effective weak mixing angle sin2θeff. We discuss the combination of the four measurements of AFB...
Rafael Lopes de Sa
(Fermilab)
02/08/2017, 11:25
Precision Electroweak Physics
Presentation
Measurements of electroweak parameters with the CMS detector are reported. The effective electroweak mixing angle sin^{2}_{\theta} is extracted by measuring the forward-backward asymmetry in dilepton events near the Z boson mass region. Experimental and theoretical challenges needed for a high-precision W boson mass measurement are reported using a sample of Z->mumu events.
Mr
Steven Dye
(Wayne State University)
02/08/2017, 11:50
Precision Electroweak Physics
Presentation
The proton radius puzzle, i.e. the large discrepancy in the extraction of the proton charge radius between regular and muonic hydrogen, challenges our understanding of the structure of the proton. It can also be an indication of a new force that couples to muons, but not to electrons. An effective field theory analysis using Non Relativistic Quantum Electrodynamics (NRQED) indicates that the...