High-precision measurement of the <i>W</i> boson mass with the CDF II detector

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No Canadian affiliation. An affiliation-only frame — the usual design — would never have seen this work. It is one of the works that make the case for inverting the frame.

Machine scores (provisional)

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0.212 · how far apart the two teachers sit on this one work

Validation status

score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Abstract

The mass of the W boson, a mediator of the weak force between elementary particles, is tightly constrained by the symmetries of the standard model of particle physics. The Higgs boson was the last missing component of the model. After observation of the Higgs boson, a measurement of the W boson mass provides a stringent test of the model. We measure the W boson mass, M W , using data corresponding to 8.8 inverse femtobarns of integrated luminosity collected in proton-antiproton collisions at a 1.96 tera–electron volt center-of-mass energy with the CDF II detector at the Fermilab Tevatron collider. A sample of approximately 4 million W boson candidates is used to obtain <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"> <mml:mrow> <mml:msub> <mml:mi>M</mml:mi> <mml:mi>W</mml:mi> </mml:msub> <mml:mo>=</mml:mo> <mml:mn>80</mml:mn> <mml:mo>,</mml:mo> <mml:mn>433.5</mml:mn> <mml:mo>±</mml:mo> <mml:msub> <mml:mrow> <mml:mn>6.4</mml:mn> </mml:mrow> <mml:mrow> <mml:mtext>stat</mml:mtext> </mml:mrow> </mml:msub> <mml:mo>±</mml:mo> <mml:msub> <mml:mrow> <mml:mn>6.9</mml:mn> </mml:mrow> <mml:mrow> <mml:mtext>syst</mml:mtext> </mml:mrow> </mml:msub> <mml:mo>=</mml:mo> <mml:mn>80</mml:mn> <mml:mo>,</mml:mo> <mml:mn>433.5</mml:mn> <mml:mo>±</mml:mo> <mml:mn>9.4</mml:mn> <mml:mtext> MeV</mml:mtext> <mml:mo>/</mml:mo> <mml:msup> <mml:mi>c</mml:mi> <mml:mn>2</mml:mn> </mml:msup> </mml:mrow> </mml:math> , the precision of which exceeds that of all previous measurements combined (stat, statistical uncertainty; syst, systematic uncertainty; MeV, mega–electron volts; c , speed of light in a vacuum). This measurement is in significant tension with the standard model expectation.

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The record

Venue

Science

Topic

Particle physics theoretical and experimental studies

Field

Physics and Astronomy

Canadian institutions

—

Funders

FermilabOffice of ScienceAustralian Research CouncilNational Research Foundation of KoreaMinisterio de Ciencia e InnovaciónBundesministerium für Bildung und ForschungAcademy of FinlandRussian Foundation for Basic ResearchMinistry of Education, Culture, Sports, Science and TechnologyNational Science FoundationRoyal SocietyNatural Sciences and Engineering Research Council of CanadaAlfred P. Sloan FoundationNational Science CouncilIstituto Nazionale di Fisica NucleareCERNScience and Technology Facilities CouncilNational Research FoundationSchweizerischer Nationalfonds zur Förderung der Wissenschaftlichen ForschungU.S. Department of Energy

Keywords

PhysicsTevatronHiggs bosonParticle physicsStandard Model (mathematical formulation)Nuclear physicsCollider Detector at FermilabLuminosityColliderFermilabBosonCenter of mass (relativistic)Large Hadron ColliderQuantum mechanics

Has abstract in OpenAlex

yes

API

/api/v1/works/W4223595573