“…ee events in bins of p ee T . Here imb is defined as the sum of the projections of the dielectron momentum (p Àee T ) andũ T vectors in the transverse plane on the axis bisecting the dielectron opening angle [16].…”
Section: H Y S I C a L R E V I E W L E T T E R Smentioning
“…ee events in bins of p ee T . Here imb is defined as the sum of the projections of the dielectron momentum (p Àee T ) andũ T vectors in the transverse plane on the axis bisecting the dielectron opening angle [16].…”
Section: H Y S I C a L R E V I E W L E T T E R Smentioning
“…There are however different other methods. One method tries to connect regions unaccessible to a perturbative approach in QCD to regions of other theories that can easily be solved either via perturbative methods, as in the standard way, for example like in [227] or via methods originating from, say, general relativity [228]. These methods are spin-offs from the study of dualities [229] and are impressively promising today.…”
Section: A Giant Leap: Quantum Chromodynamicsmentioning
“…Thus, the M W measurement presented here is effectively a measurement of the ratio of W and Z boson masses. The hadronic response (resolution) is tuned by using the mean (width) of the η imb distribution in Z → ee events in different bins of dielectron transverse momentum p ee T , where η imb is a projection of ( p ee T + u T ) vector on the axis bisecting the dielectron opening angle [9].…”
We present the most precise single measurement of the W boson mass using data collected with the D0 experiment. An integrated luminosity of 1 fb −1 yields 499,830 W → eν candidates. With this sample we measure M W = 80.401 ± 0.043 GeV.
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