Precise Measurement of the W-Boson Mass with the CDF II Detector

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URI: http://hdl.handle.net/10902/2154
ISSN: 0031-9007
ISSN: 1079-7114
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Autoría
Aaltonen, Timo Antero; Amerio, Silvia; Amidei, Dante; Anastassov, Anton; Annovi, Alberto; Antos, Jaroslav; Apollinari, Giorgio; Appel, Jeffrey A.; Arisawa, Tetsuo; Casal Laraña, Bruno; Cuevas Maestro, Francisco Javier; Gómez Gramuglio, GervasioAutoridad Unican; Palencia Cortezón, José Enrique; Rodrigo Anoro, TeresaAutoridad Unican; Ruiz Jimeno, AlbertoAutoridad Unican; Scodellaro, LucaAutoridad Unican; Vila Álvarez, Iván Autoridad Unican; Vilar Cortabitarte, RocíoAutoridad Unican; Artikov, A.; [et al.]
Fecha
2012-04-12
Derechos
© 2012 American Physical Society
Publicado en
Physical review letters, vol. 108, iss. 15, art. num. 151803 (2012)
Editorial
American Physical Society
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Resumen/Abstract
We have measured the W-boson mass MW using data corresponding to 2.2  fb-1 of integrated luminosity collected in pp̅ collisions at √s=1.96  TeV with the CDF II detector at the Fermilab Tevatron collider. Samples consisting of 470 126 W→eν candidates and 624 708 W→μν candidates yield the measurement MW=80 387±12stat.±15syst.=80 387±19  MeV/c2. This is the most precise measurement of the W-boson mass to date and significantly exceeds the precision of all previous measurements combined.
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