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Precision measurement of the weak charge of the proton


Precision measurement of the weak charge of the proton - Nature

Here we report the value 0.0719 ± 0.0045, where the uncertainty is one standard deviation, derived from our measured parity-violating asymmetry in the ...

Precision Measurement of the Weak Charge of the Proton - arXiv

Abstract page for arXiv paper 1905.08283: Precision Measurement of the Weak Charge of the Proton.

A Precision Measurement of the Weak Charge of the Proton at Low Q2

The goal of the experiment is to measure the value of the weak charge of proton, Qweak to a 4% precision, which, if it confirms the Stan- dard Model prediction, ...

Precision measurement of the weak charge of the proton - PubMed

Precision measurement of the weak charge of the proton. Nature. 2018 May;557(7704):207-211. doi: 10.1038/s41586-018-0096-0. Epub 2018 May 9.

Precision measurement of the proton's weak charge ... - Phys.org

To measure the proton's weak charge, an intense beam of electrons was directed onto a target containing cold liquid hydrogen, and the electrons ...

The Qweak experiment: a precision measurement of the proton's ...

The experiment will determine the weak charge of the proton with about 4.1% combined statistical and systematic errors. This corresponds to constraints on ...

(PDF) Precision Measurement of the Weak Charge of the Proton

Here we use precision parity-violating electron scattering measurements on nuclear targets to extract the weak charges of the quarks. The result ...

Precision measurement of the weak charge of the proton and parity ...

From the data gathered via the 1.16 GeV 180 μA longitudinally polarized electron beam scattering off the unpolarized photons in the liquid hydrogen target, a ...

Precision measurement of the weak charge of the proton - OSTI.GOV

Such an indirect search aims to determine the weak charge of the proton, which defines the strength of the proton's interaction with other ...

Precision measurement of the proton's weak charge narrows the ...

An electron scatters from a proton through the electromagnetic interaction, but each also experiences the weak interaction. The Q-weak ...

Qweak: A precision measurement of the proton's weak charge

The experiment will measure the weak charge of the proton, and thus the weak mixing angle at low energy scale, providing a precision test of the Standard Model.

Proton's weak charge is measured to high precision - Physics World

By measuring the weak contribution, the team can calculate the weak charge of the proton. The weak charge quantifies how a particle couples to ...

Precision Measurement of the Proton's Weak Charge using Parity ...

The Qweak experiment has precisely determined the weak charge of the proton Qp w by measuring the parity-violating asymmetry in elastic electron-proton ...

Qweak: A precision measurement of the proton's weak charge

The experiment will provide the first measure of the weak charge of the proton, Qw, to an accuracy of 4%. Qw is simply related to the weak mixing angle θ w, ...

The Proton's Weak Charge - UK College of Arts and Sciences

An example is a measurement of the proton's weak charge. The weak charge is the strength of the proton's vector coupling to the weak neutral current, and its ...

a Precision Measurement of the Proton's Weak Charge - NASA/ADS

The experiment will provide the first measurement of the weak charge of the proton to an accuracy of 4%. Qwp is related to the weak mixing angle, and thus ...

Understanding the proton's weak side | MIT News

The proton's weak charge was found to be QWp=0.0719±0.0045. This turns out to be in excellent agreement with predictions of the Standard Model, ...

The Qweak experiment: a precision measurement of the proton's ...

The experiment will determine the weak charge of the proton with about 4.1% combined statistical and systematic errors. This corresponds to constraints on ...

Q-weak: A Precision Test of the Standard Model and Determination ...

When this result is further combined with the 133Cs atomic parity violation (APV) measurement, significant constraints on the weak charges of the up and down ...

A Measurement of the Weak Charge of the Proton through Parity ...

After a decade of preparations, the Qweak experiment at Jefferson Lab is making the first direct measurement of the weak charge of the proton, Qweak9.