Precise measurement of the $$W$$-boson mass with the CDF II detector

Journal Article · Thu Mar 01 04:00:00 EST 2012 · Phys.Rev.Lett.108:151803,2012

DOI:https://doi.org/10.1103/PhysRevLett.108.151803· OSTI ID:1036285

Aaltonen, T; Alvarez Gonzalez, B; Amerio, S; Amidei, D; Anastassov, A; Annovi, A; Antos, J; Apollinari, G; Appel, J A; Arisawa, T; Artikov, A

We have measured the W-boson mass M{sub W} using data corresponding to 2.2 fb{sup -1} of integrated luminosity collected in p{bar p} collisions at {radical}s = 1.96 TeV with the CDF II detector at the Fermilab Tevatron collider. Samples consisting of 470 126 W {yields} e{nu} candidates and 624 708 W {yields} {mu}{nu} candidates yield the measurement M{sub W} = 80 387 {+-} 12{sub stat} {+-} 15{sub syst} = 80 387 {+-} 19 MeV/c{sup 2}. This is the most precise measurement of the W-boson mass to date and significantly exceeds the precision of all previous measurements combined.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL
• Sponsoring Organization: DOE Office of Science
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1036285
• Report Number(s): FERMILAB-PUB-12-061-E; arXiv eprint number arXiv:1203.0275
• Journal Information: Phys.Rev.Lett.108:151803,2012, Journal Name: Phys.Rev.Lett.108:151803,2012
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCURACY
Experiment-HEP
FERMILAB COLLIDER DETECTOR
FERMILAB TEVATRON
INTERMEDIATE BOSONS
LUMINOSITY